WO2006006671A1 - 感光性組成物、パターン形成材料、感光性積層体、並びにパターン形成装置及びパターン形成方法 - Google Patents
感光性組成物、パターン形成材料、感光性積層体、並びにパターン形成装置及びパターン形成方法 Download PDFInfo
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- WO2006006671A1 WO2006006671A1 PCT/JP2005/013048 JP2005013048W WO2006006671A1 WO 2006006671 A1 WO2006006671 A1 WO 2006006671A1 JP 2005013048 W JP2005013048 W JP 2005013048W WO 2006006671 A1 WO2006006671 A1 WO 2006006671A1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/029—Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/029—Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur
- G03F7/0295—Photolytic halogen compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/031—Organic compounds not covered by group G03F7/029
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2014—Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards, e.g. in a vacuum frame
- G03F7/2016—Contact mask being integral part of the photosensitive element and subject to destructive removal during post-exposure processing
- G03F7/202—Masking pattern being obtained by thermal means, e.g. laser ablation
Definitions
- Photosensitive composition pattern forming material, photosensitive laminate, pattern forming apparatus and pattern forming method
- the present invention relates to a photosensitive composition suitable for dry film resist (DFR), solder resist, liquid solder resist, and the like that can form an image by UV exposure.
- a pattern forming material and a photosensitive laminate using the photosensitive composition a pattern forming apparatus including the pattern forming material and the photosensitive laminate, a pattern forming method, a high-definition wiring pattern, and a permanent pattern (Protective film, interlayer insulating film, solder resist pattern, etc.)
- a copper wiring pattern is formed on a copper-clad laminate using a DFR. Furthermore, it is soldered onto the wiring pattern on which components such as semiconductors, capacitors and resistors are formed.
- a soldering process such as IR reflow
- a permanent pattern corresponding to the unnecessary part of soldering is used as a protective film and an insulating film.
- the forming method is adopted.
- a pattern forming material such as a solder resist is used as the permanent pattern of the protective film.
- pattern forming materials such as dry film resist are also used as a protective film! /
- exposure to the pattern forming material has been performed using a mask.
- a digital 'micromirror' device DMD
- a maskless exposure system using a laser beam using a laser is also being actively studied.
- the above proposal does not consider the difference in spectral sensitivity with respect to a certain wavelength region centered on the wavelength of the exposure light, and the difference in wavelength of the exposure light source is determined by the spectral sensitivity of the photosensitive material. No attempt is made to solve it. Furthermore, the above proposal has a problem that there is not sufficient sensitivity when a 405 nm solid-state laser that has been widely used in recent years is used as an exposure light source.
- the sensitivity distribution with respect to exposure light in the short wavelength (blue-violet light) region is substantially constant, and is not affected by variations in exposure wavelength during laser exposure.
- a pattern forming material that can be handled, a pattern forming apparatus including the pattern forming material, and a pattern forming method using the pattern forming material have not yet been provided, and further improvement and development are desired. is the current situation.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-194782
- the present invention has a substantially constant sensitivity distribution with respect to exposure light having a short wavelength (blue-violet light) region, particularly 400 to 410 nm, and is not affected by variations in exposure wavelength during laser exposure. Excellent reproducibility, extremely low pattern variation, and handling in a bright room environment! Photosensitive composition, pattern forming material and photosensitive laminate laminated with the photosensitive composition, pattern forming apparatus, pattern forming method, high-definition wiring pattern, permanent pattern (protective film, interlayer insulating film) , Solder resist pattern, etc.).
- Means for achieving the object are as follows. That is, ⁇ 1> includes a binder, a polymerizable compound and a photopolymerization initiator,
- the sensitivity distribution at 400 to 410 nm is substantially constant.
- variations in the line width of the pattern after development are extremely suppressed without being affected by variations in exposure wavelength during laser exposure.
- the photosensitive composition according to any one of the above.
- ⁇ 4> The photosensitive composition according to any one of ⁇ 1> to ⁇ 3>, wherein the maximum absorption wavelength of the sensitizer is 380 to 420 nm.
- ⁇ 5> The photosensitive composition according to any one of ⁇ 1> to ⁇ 4>, wherein the sensitizer is a condensed ring compound.
- ⁇ 6> The photosensitive composition according to any one of ⁇ 1> to ⁇ 5>, wherein the sensitizer is at least one selected from the powers of attaridones, attaridines, and coumarins.
- ⁇ 7> Content Power of Sensitizer The photosensitive composition according to any one of the above items ⁇ 1> to ⁇ 6>, which is 0.1 to 10% by mass relative to the total amount of the photosensitive composition.
- Binder strength The photosensitive composition according to ⁇ 1> to ⁇ 7> having an acidic group. It is a thing.
- ⁇ 10> The photosensitive composition according to any one of ⁇ 1> to ⁇ 9>, wherein the binder contains a copolymer of at least one of styrene and a styrene derivative.
- ⁇ 11> The photosensitive composition according to any one of ⁇ 1> and ⁇ 10>, wherein the binder has an acid value of 70 to 250 (mgKOH / g).
- ⁇ 12> The photosensitive composition according to any one of ⁇ 1> to ⁇ 11>, wherein the polymerizable compound contains a monomer having at least one of a urethane group and an aryl group.
- the polymerizable compound has a bisphenol skeleton and the ⁇ 1>
- Photopolymerizable initiators are halogenated hydrocarbon derivatives, hexaryl biimidazoles, oxime derivatives, organic peroxides, thio compounds, ketone compounds, aromatic onium salts, Sens power of ⁇ 1> Karaku 13> containing at least one selected
- ⁇ 15> The photosensitive composition according to any one of ⁇ 1> to ⁇ 14>, wherein the photopolymerization initiator includes a 2,4,5-triarylimidazole dimer derivative.
- ⁇ 16> The photosensitive composition according to any one of ⁇ 1> to 15>, which contains a polymerization inhibitor.
- ⁇ 23> The above-mentioned ⁇ 1>, wherein the binder is a copolymer obtained by reacting 0.1 to 1.2 equivalents of a primary amine compound to the anhydride group of the maleic anhydride copolymer. ⁇ 2> and ⁇ 21> to the photosensitive composition according to any one of ⁇ 22>.
- the binder is (a) maleic anhydride, (b) aromatic bull monomer, and (c) vinyl monomer, the glass transition temperature (Tg )
- Tg glass transition temperature
- the photosensitive composition according to any one of 2> and 21> Karaku 2 3>.
- One of the photopolymerization initiator and the photopolymerization initiation system is a halogenated hydrocarbon derivative, phosphine oxide, hexarylbiimidazole, oxime derivative, organic peroxide, thio compound, ketone compound, A acylphosphine oxide compound, an aromatic onium salt, and a ketoxime ether power, including at least one selected from the above 1> Karaku 2> and 21> to ⁇ 24>! Of the photosensitive composition.
- the thermal crosslinking agent is selected from an epoxy resin compound, an oxetane compound, a polyisocyanate compound, a compound obtained by reacting a polyisocyanate compound with a blocking agent, and a melamine derivative
- the photosensitive composition according to any one of the above items ⁇ 1> to ⁇ 2> and ⁇ 21> preferably 25, which is at least one kind.
- ⁇ 27> The photosensitive composition according to any one of ⁇ 1>, ⁇ 2> and ⁇ 21>, ⁇ 26>, wherein the melamine derivative is an alkylated methylolmelamine.
- a pattern forming material comprising a photosensitive layer comprising the photosensitive composition according to any one of the above items 1> to 27> on a support.
- the photosensitive layer modulates the light from the light irradiating means by the light modulating means having n picture elements for receiving and emitting the light from the light irradiating means, 28.
- the pattern forming material according to the above item 28> which is exposed with light passing through a microphone lens array in which microlenses having aspherical surfaces capable of correcting aberration caused by distortion of the incident surface are arranged.
- ⁇ 30> The pattern forming material according to any one of ⁇ 28> to ⁇ 29>, wherein the photosensitive layer has a thickness of 1 to 100 / ⁇ .
- ⁇ 33> The pattern forming material according to any one of ⁇ 28> to ⁇ 32>, wherein the support is wound in a roll shape.
- ⁇ 35> The pattern forming material according to any one of ⁇ 28> to ⁇ 34>, wherein the pattern forming material has a protective film on the photosensitive layer.
- a photosensitive laminate comprising a photosensitive layer made of the photosensitive composition according to any one of ⁇ 1> above 27 on a substrate.
- the photosensitive layer has modulated the light from the light irradiating means by the light modulating means having ⁇ pixel parts for receiving and emitting the light from the light irradiating means, 36.
- the photosensitive laminate according to 36> above which is exposed with light passing through a microphone lens array in which microlenses having aspheric surfaces capable of correcting aberration due to surface distortion are arranged.
- ⁇ 38> The photosensitive laminate according to any one of ⁇ 36> Karaku 37>, wherein the photosensitive layer has a thickness of 1 to 100 / ⁇ .
- a pattern forming apparatus comprising: a light modulating means for performing exposure to at least one of the photosensitive layer in the composition material and the photosensitive layer in the photosensitive laminate.
- the light irradiation unit irradiates light toward the light modulation unit.
- the light modulation means modulates light received from the light irradiation means.
- the light modulated by the light modulating means is exposed to the photosensitive layer.
- the light modulation unit further includes a pattern signal generation unit that generates a control signal based on the pattern information to be formed, and the control generated by the pattern signal generation unit generates light emitted from the light irradiation unit.
- the pattern forming apparatus according to ⁇ 39> wherein the pattern is modulated according to a signal.
- the light modulation unit since the light modulation unit includes the pattern signal generation unit, light emitted from the light irradiation unit is converted into a control signal generated by the pattern signal generation unit. Modulated accordingly.
- the light modulation means has n pixel parts, and forms any less than n pixel parts continuously arranged from the n pixel parts.
- the pattern forming apparatus according to any one of ⁇ 39> and 40 which is controllable in accordance with pattern information.
- n light modulation means in the light modulation unit Light of the light irradiation means force is modulated at high speed by controlling any less than n pixel parts arranged continuously from the pixel parts according to the pattern information.
- ⁇ 42> The pattern forming apparatus according to any one of the above items 39>, 41>, and 41>, wherein the light modulation unit is a spatial light modulation element.
- ⁇ 43> The pattern forming apparatus according to ⁇ 42>, wherein the spatial light modulation element is a digital micromirror device (DMD).
- DMD digital micromirror device
- ⁇ 44> The pattern forming apparatus according to any one of ⁇ 41>, ⁇ 43>, wherein the picture element portion is a micromirror.
- ⁇ 45> The pattern forming apparatus according to any one of ⁇ 39>, ⁇ 44>, wherein the light irradiation means can synthesize and irradiate two or more lights.
- the light irradiation unit includes two or more light beams.
- the exposure is performed by exposure light having a deep focal depth.
- the pattern forming material is exposed with extremely high definition.
- the light irradiation means includes a plurality of lasers, a multimode optical fiber, and a collective optical system that collects the laser beams irradiated with the plurality of laser forces and couples the laser beams to the multimode optical fiber.
- the pattern forming apparatus according to any one of the above ⁇ 39> force ⁇ 45>.
- the light irradiating unit can collect the laser light emitted from each of the plurality of lasers by the collective optical system and be coupled to the multimode optical fiber.
- exposure is performed with exposure light having a deep focal depth.
- the pattern forming material is exposed with extremely high definition.
- Pattern 1 above wherein the photosensitive composition according to any one of ⁇ 27> is applied on a substrate, dried to form a photosensitive layer, and then exposed and developed. It is a forming method.
- ⁇ 51> The pattern forming method according to any one of ⁇ 47>, ⁇ 50>, wherein the exposure is performed imagewise based on pattern information to be formed.
- the exposure is performed by generating a control signal based on pattern information to be formed and using light modulated in accordance with the control signal. This is a pattern forming method.
- the pattern formation information to be formed A control signal is generated based on the control signal, and light is modulated in accordance with the control signal.
- the light is modulated by the light modulation means, and then passes through a microlens array in which microlenses having aspheric surfaces capable of correcting aberration due to distortion of the exit surface of the picture element portion in the light modulation means are arranged.
- the light force modulated by the light modulation unit passes through the aspheric surface in the microlens array, whereby aberration due to distortion of the exit surface in the pixel portion is corrected.
- the As a result distortion of an image formed on the pattern forming material is suppressed, and exposure to the pattern forming material is performed with extremely high definition.
- the aspherical surface is a toric surface
- aberration due to distortion of the radiation surface in the pixel portion is efficiently corrected, and the pattern is formed on the pattern forming material.
- the distortion of the image to be imaged is efficiently suppressed.
- the exposure to the pattern forming material is performed with extremely high definition.
- the extinction ratio is improved by performing exposure through the aperture array. As a result, the exposure is performed with extremely high definition.
- ⁇ 57> The pattern forming method according to any one of ⁇ 47>, ⁇ 56>, wherein the exposure is performed while relatively moving the exposure light and the photosensitive layer.
- exposure is performed at a high speed by performing exposure while relatively moving the modulated light and the photosensitive layer.
- ⁇ 58> The pattern forming method according to ⁇ 47> to ⁇ 57>, wherein the exposure is performed on a partial region of the photosensitive layer.
- ⁇ 60> The pattern forming method according to any one of ⁇ 47> to ⁇ 59>, wherein the photosensitive layer is developed after the exposure.
- Etching pattern force The pattern forming method according to the above item 61, which is a wiring pattern, and the etching pattern is formed by at least one of an etching process and a plating process.
- ⁇ 64> The method for forming a permanent pattern according to ⁇ 63>, wherein the curing process is at least one of a whole surface exposure process and a whole surface heat treatment performed at 120 to 200 ° C.
- ⁇ 65> The permanent pattern forming method according to any one of ⁇ 63> to ⁇ 64>, wherein at least one of a protective film, an interlayer insulating film, and a solder resist pattern is formed.
- ⁇ 66> A permanent pattern formed by the method for forming a permanent pattern according to any one of ⁇ 63> to ⁇ 65>.
- the permanent pattern according to ⁇ 66> which is at least one of a protective film, an interlayer insulating film, and a solder resist pattern.
- the conventional problems can be solved, and the sensitivity distribution with respect to exposure light having a short wavelength (blue-violet light) region, particularly 400 to 410 nm is substantially constant, and the exposure wavelength at the time of laser exposure is substantially constant.
- a photosensitive composition that is not affected by variations, has excellent pattern reproducibility, has extremely small variations in pattern shape, and can be handled in a bright room environment.
- a pattern forming apparatus, a pattern forming method, a high-definition wiring pattern, and a permanent pattern (protective film, interlayer insulating film, solder resist pattern, etc.) laminated with a light-sensitive composition it can.
- FIG. 1 is an example of a partially enlarged view showing a configuration of a digital micromirror device (DMD).
- DMD digital micromirror device
- FIG. 2A is an example of an explanatory diagram for explaining the operation of the DMD.
- FIG. 2B is an example of an explanatory diagram for explaining the operation of the DMD similar to FIG. 2A.
- FIG. 3A is an example of a plan view showing the arrangement of the exposure beam and the scanning line in a case where the DMD is not inclined and in a case where the DMD is inclined.
- FIG. 3B is an example of a plan view showing a comparison of exposure beam arrangement and scanning lines in the case where the DMD similar to that in FIG. 3A is not inclined and in the case where the DMD is inclined.
- FIG. 4A is an example of a diagram illustrating an example of a DMD usage area.
- FIG. 4B is an example of a diagram showing an example of a DMD usage area similar to FIG. 4A.
- FIG. 5 is an example of a plan view for explaining an exposure method in which a pattern forming material is exposed by one scanning by a scanner.
- FIG. 6A is an example of a plan view for explaining an exposure method for exposing a pattern forming material by a plurality of scans by a scanner.
- FIG. 6B is an example of a plan view for explaining an exposure method for exposing the pattern forming material by a plurality of scans by the same scanner as in FIG. 6A.
- FIG. 7 is an example of a schematic perspective view showing an appearance of an example of a pattern forming apparatus.
- FIG. 8 is an example of a schematic perspective view showing the configuration of the scanner of the pattern forming apparatus.
- FIG. 9A is an example of a plan view showing an exposed region formed in a pattern forming material.
- FIG. 9B is an example of a diagram showing an arrangement of exposure areas by each exposure head.
- FIG. 10 is an example of a perspective view showing a schematic configuration of an exposure head including light modulation means.
- FIG. 11 is an example of a sectional view in the sub-scanning direction along the optical axis showing the configuration of the exposure head shown in FIG.
- FIG. 12 shows an example of a controller that controls DMD based on pattern information.
- FIG. 13A is an example of a cross-sectional view along the optical axis showing the configuration of another exposure head having a different coupling optical system.
- FIG. 13B is an example of a plan view showing an optical image projected onto the exposure surface when a microlens array or the like is not used.
- FIG. 13C is an example of a plan view showing an optical image projected onto an exposed surface when a microlens array or the like is used.
- FIG. 14 is an example of a diagram showing the distortion of the reflection surface of the micromirror constituting the DMD with contour lines.
- FIG. 15A is an example of a graph showing distortion of the reflecting surface of the micromirror in two diagonal directions of the mirror.
- FIG. 15B is an example of a graph showing distortion of the reflecting surface of the micromirror similar to that in FIG. 15A in two diagonal directions of the mirror.
- FIG. 16A is an example of a front view of a microlens array used in the pattern forming apparatus.
- FIG. 16B is an example of a side view of the microlens array used in the pattern forming apparatus.
- FIG. 17A is an example of a front view of a microlens constituting a microlens array.
- FIG. 17B is an example of a side view of a microlens constituting the microlens array.
- FIG. 18A is an example of a schematic diagram showing a condensing state by a microlens in one cross section.
- FIG. 18B is a schematic diagram showing the condensing state by a microlens in one cross section. It is an example of a figure.
- FIG. 19A is an example of a diagram showing the result of simulating the beam diameter in the vicinity of the condensing position of the microlens of the present invention.
- FIG. 19B is an example of a diagram showing the same simulation results as in FIG. 19B, but at different positions.
- FIG. 19C is an example of a diagram showing a simulation result similar to FIG. 19A at another position.
- FIG. 19D is an example of a diagram showing a simulation result similar to FIG. 19A at another position.
- FIG. 20A is an example of a diagram showing a result of simulating the beam diameter in the vicinity of the condensing position of the microlens in the conventional pattern forming method.
- FIG. 20B is an example of a diagram showing the same simulation results as in FIG. 20A but at different positions.
- FIG. 20C is an example of a diagram illustrating the simulation result similar to FIG. 20A at another position.
- FIG. 20D is an example of a diagram showing a simulation result similar to FIG. 20A at another position.
- FIG. 21 is an example of a plan view showing another configuration of the combined laser light source.
- FIG. 22A is an example of a front view of a microlens constituting a microlens array.
- FIG. 22B is an example of a side view of a microlens constituting a microlens array.
- FIG. 23A is an example of a schematic diagram showing the condensing state by the microlenses of FIGS. 22A and 22B in one cross section.
- FIG. 23B is an example of a schematic diagram showing another cross section of the example of FIG. 23A.
- FIG. 24A is an example of an explanatory diagram of the concept of correction by the light quantity distribution correcting optical system.
- FIG. 24B is a diagram for explaining the concept of correction by the light quantity distribution correction optical system. It is an example.
- FIG. 24C is an example of an explanatory diagram of the concept of correction by the light quantity distribution correction optical system.
- FIG. 25 is an example of a graph showing a light amount distribution when the light irradiation means is a Gaussian distribution and the light amount distribution is not corrected.
- FIG. 26 is an example of a graph showing the light amount distribution after correction by the light amount distribution correcting optical system.
- FIG. 27A is a perspective view showing the configuration of the fiber array light source
- FIG. 27A (B) is an example of a partially enlarged view of (A)
- FIG. 27A (C) and (D ) Is an example of a plan view showing an array of light emitting points in the laser emitting portion.
- FIG. 27B is an example of a front view showing an array of light emitting points in a laser emitting section of a fiber array light source.
- FIG. 28 is an example of a diagram showing a configuration of a multimode optical fiber.
- FIG. 29 is an example of a plan view showing a configuration of a combined laser light source.
- FIG. 30 is an example of a plan view showing a configuration of a laser module.
- FIG. 31 is an example of a side view showing the configuration of the laser module shown in FIG. 30.
- FIG. 32 is a partial side view showing the configuration of the laser module shown in FIG. 30.
- FIG. 33 is an example of a perspective view showing a configuration of a laser array.
- FIG. 34A is an example of a perspective view showing a configuration of a multi-cavity laser.
- FIG. 34B is an example of a perspective view of a multi-cavity laser array in which the multi-cavity lasers shown in FIG. 34A are arranged in an array.
- FIG. 35 is an example of a plan view showing another configuration of the combined laser light source.
- FIG. 36A is an example of a plan view showing another configuration of the combined laser light source.
- FIG. 36B is an example of a cross-sectional view along the optical axis of FIG. 36A.
- FIG. 37A shows the depth of focus in the conventional exposure apparatus and the pattern forming method of the present invention.
- FIG. 3 is an example of a cross-sectional view along an optical axis showing a difference from a depth of focus by a (pattern forming device).
- FIG. 37B shows the depth of focus in the conventional exposure apparatus and the pattern forming method of the present invention.
- FIG. 3 is an example of a cross-sectional view along an optical axis showing a difference from a depth of focus by a (pattern forming device).
- the present invention is an improvement of the photosensitive composition, the pattern forming material and photosensitive layered product obtained by laminating the photosensitive composition, the pattern forming apparatus, the pattern forming method, and the permanent pattern. To do.
- the photosensitive composition of the present invention includes a photosensitive composition for dry film resist (DFR) and a photosensitive composition for solder resist.
- the dry film resist is one in which a photosensitive layer is laminated on a support (film) and removed after being used as a resist.
- the solder resist is a support (film) or substrate. This refers to those that remain for the purpose of pattern protection after the photosensitive layer is laminated and used as a resist.
- the pattern forming material and photosensitive laminate of the present invention are obtained by laminating a photosensitive layer made of the photosensitive composition of the present invention on a support or a substrate.
- the pattern forming apparatus according to the present invention is common to the production of both the pattern forming material of the present invention and the photosensitive laminate in which either the photosensitive composition for dry film resist or the photosensitive composition for solder resist is laminated. It is a device used.
- the pattern forming method of the present invention includes a dry film resist pattern forming method and a solder resist pattern forming method.
- the dry film resist photosensitive composition has a maximum value of spectral sensitivity in the wavelength region of 380 to 420 nm, a minimum exposure amount that can form a pattern at 400 nm, S power ⁇ OOmjZcm 2 or less, and a pattern at 410 nm.
- the spectral sensitivity is, for example, photopolymer technology (Aya Yamaoka, 1988)
- the photosensitive composition of a photosensitive laminate formed by laminating a pattern-forming material on a substrate to be processed is measured using a spectral sensitivity measuring device by the method described in the publication of the publication industry newspaper company, page 262). To do. Specifically, for light dispersed from a light source such as a xenon lamp or a tungsten lamp, the exposure wavelength changes linearly in the horizontal axis direction, and the exposure intensity changes logarithmically in the vertical axis direction.
- the pattern is formed for each sensitivity of each exposure wavelength by performing development processing after irradiation with exposure.
- the exposure energy that can be formed is calculated.
- the maximum peak in the spectral sensitivity curve created by plotting the wavelength on the horizontal axis and the reciprocal of the exposure energy on the vertical axis is the spectral sensitivity.
- the minimum exposure amount at which the pattern can be formed is obtained as exposure energy at which an image can be formed, which is calculated from the height of the pattern formed in the spectral sensitivity measurement described above.
- the minimum exposure amount at which the pattern can be formed is determined by changing the development conditions such as the type of developer, development temperature, development time, etc., and the minimum exposure amount at which a pattern can be formed under the optimum development conditions. means.
- the optimum development conditions can be appropriately selected according to the purpose without any particular limitation.
- the developer having a pH of 8-12 is 25-40.
- C a condition of spraying at a pressure of 0.05 to 0.5 MPa to completely remove the uncured region.
- the minimum exposure amount S capable of forming a pattern at 400 nm is 200 miZcm 2 or less.
- the minimum exposure amount S capable of forming a pattern at 410 nm is 200 miZcm 2 or less.
- the value of S / is from 0.6 to 1.4 force S, preferably from 0.8 to 1.2 force S, and from 0.9 to
- 1.1 is particularly preferred.
- the minimum exposure amount S capable of forming a pattern at 405 nm is 200 mj / cm 2.
- the following is 50 mjZcm 2 , more preferably lOOmjZcm 2 .
- the noinder is more preferably soluble in an alkaline liquid, preferably swellable in an alkaline liquid.
- Suitable examples of the binder exhibiting swellability or solubility with respect to the alkaline liquid include those having an acidic group.
- the acidic group is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include a carboxyl group, a sulfonic acid group, and a phosphoric acid group. Among these, a carboxyxenore group is preferable. .
- binder having a carboxyl group examples include a vinyl copolymer having a carboxyl group, polyurethane resin, polyamic acid resin, and modified epoxy resin.
- solubility in a coating solvent Viewpoints such as solubility in alkaline developer, suitability for synthesis, and ease of adjustment of film properties.
- Vinyl copolymers having a carboxyl group are preferred.
- the vinyl copolymer having a carboxyl group can be obtained by copolymerization with at least (1) a vinyl monomer having a carboxyl group and (2) a monomer copolymerizable therewith.
- Examples of the butyl monomer having a carboxyl group include (meth) acrylic acid, belbenzoic acid, maleic acid, maleic acid monoalkyl ester, fumaric acid, itaconic acid, crotonic acid, cinnamic acid, and acrylic acid.
- (meth) acrylic acid is particularly preferred from the viewpoint of copolymerization cost and solubility.
- monomers having anhydrides such as maleic anhydride, itaconic anhydride, citraconic anhydride, etc. may be used as the precursor of the carboxyl group.
- the other copolymerizable monomer is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include (meth) acrylic acid esters, crotonic acid esters, beryl esters, maleic acid.
- Acid diesters fumaric acid diesters, itaconic acid diesters, (meth) acrylamides, butyl ethers, butyl alcohol esters, styrenes, (meth) acrylonitrile, heterocyclic groups substituted by butyl groups (for example, , Pyridine, pyrrolidone, carbcarbazole, etc.), N-formaldehyde, N-Burecetamide, N-Bureimidazole, Bule Prolatatone, 2-acrylamide- 2-methylpropanesulfonic acid, monophosphate ( 2-Atalyloyloxetyl ester), mono (1-methyl-2) phosphate Atari Roy Ruo key shell chill ester) functional groups (e.g., a urethane group, Urea group, a sulfonamido group, phenol group, such as Byurumono mers having an imide group). Among them, styrene is preferred among these.
- Examples of the (meth) acrylic acid esters include methyl (meth) acrylate and ethyl.
- crotonic acid esters examples include butyl crotonate and hexyl crotonate.
- vinyl esters examples include vinyl acetate, vinyl propionate, butyl butyrate, vinyl methoxyacetate, vinyl benzoate and the like.
- maleic acid diesters examples include dimethyl maleate, diethyl maleate, and dibutyl maleate.
- Examples of the fumaric acid diesters include dimethyl fumarate, diethyl fumarate, and dibutyl fumarate.
- Examples of the itaconic acid diesters include dimethyl itaconate, dimethyl itaconate, and dibutyl itaconate.
- Examples of the (meth) acrylamides include (meth) acrylamide, N-methyl (meth) acrylamide, N ethyl (meth) acrylamide, N propyl (meth) acrylamide, N isopropyl (meth) acrylamide, N— n-Butylacrylic (meth) amide, N-t-butyl (meth) acrylamide, N cyclohexyl (meth) acrylamide, N— (2-methoxyethyl) (meth) acrylamide, N, N dimethyl (meth) acrylamide N, N Jetyl (meth) acrylamide, N-phenyl (meth) acrylamide, N-benzyl (meth) acrylamide, (meth) attalyloylmorpholine, diacetone acrylamide and the like.
- styrenes examples include styrene, methyl styrene, dimethyl styrene, trimethyl styrene, ethyl styrene, isopropylino styrene, butyl styrene, hydroxy styrene, methoxy styrene, butoxy styrene, acetoxy styrene, chlorostyrene, Examples thereof include dichlorostyrene, bromostyrene, chloromethylstyrene, hydroxystyrene protected with a group that can be deprotected by an acidic substance (for example, t-Boc, etc.), methyl benzoate, a-methylstyrene, and the like.
- an acidic substance for example, t-Boc, etc.
- butyl ethers examples include methyl butyl ether and butyl benzene. Examples thereof include monotel, hexyl vinyl ether, and methoxyethyl vinyl ether.
- Examples of the method for synthesizing the vinyl monomer having a functional group include an addition reaction of an isocyanate group and a hydroxyl group or an amino group. Specifically, a monomer having an isocyanate group and a hydroxyl group Addition reaction with a compound containing 1 or a compound with 1 primary or secondary amino group, addition reaction between a monomer having a hydroxyl group or a monomer having a primary or secondary amino group and a monoisocyanate Is mentioned.
- Examples of the monomer having an isocyanate group include compounds represented by the following structural formulas (1) to (3).
- R1 represents a hydrogen atom or a methyl group.
- Examples of the monoisocyanate include cyclohexylenoisocyanate, n-butynoleisocyanate, tolylisocyanate, benzylisocyanate, phenylisocyanate, and the like.
- Examples of the monomer having a hydroxyl group include compounds represented by the following structural formulas (4) to (12).
- R1 represents a hydrogen atom or a methyl group
- n represents an integer of 1 or more.
- Examples of the compound containing one hydroxyl group include alcohols (eg, methanol, ethanol, n -propanol, i-propanol, n-butanol, sec-butanol, t-butanol, n-hexanol).
- alcohols eg, methanol, ethanol, n -propanol, i-propanol, n-butanol, sec-butanol, t-butanol, n-hexanol.
- phenols eg, phenol, cresol, Naphthol and the like, and those further containing a substituent include fluoroethanol, trifluoroethanol, methoxyethanol, phenoxyethanol, black mouth phenol, dichloro phenol, methoxy phenol, and acetophenol.
- Examples of the monomer having a primary or secondary amino group include vinylbenzylamine.
- Examples of the compound containing one primary or secondary amino group include alkylamines (methylamine, ethylamine, n-propylamine, i-propylamine, n-butylamine, sec butylamine, t-butylamine, hexylamine, 2 —Ethylhexylamine, decylamine, dodecylamine, octadecylamine, dimethylamine, jetylamine, dibutylamine, dioctylamine), cyclic alkylamines (cyclopentylamine, cyclohexylamine, etc.), aralkylamines (benzylamine, phenethylamine, etc.), arylamines Alin, tolylamine, xylylamine, naphthylamine, etc.) Combinations (N-methyl-N-benzylamine, etc.), and further containing amines (trifluoroethyleneamine, hexafluo
- Examples of the other copolymerizable monomers other than those described above include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, and benzyl (meth) acrylate. Suitable examples include (meth) acrylic acid 2-ethylhexyl, styrene, chlorostyrene, bromostyrene, hydroxystyrene and the like.
- the other copolymerizable monomers may be used singly or in combination of two or more.
- the vinyl copolymer can be prepared by copolymerizing the corresponding monomers by a known method according to a conventional method. For example, it can be prepared by using a method (solution polymerization method) in which the monomer is dissolved in a suitable solvent and a radical polymerization initiator is added thereto to polymerize in a solution. Further, it can be prepared by utilizing polymerization such as so-called emulsion polymerization in a state where the monomer is dispersed in an aqueous medium.
- the appropriate solvent used in the solution polymerization method is not particularly limited and can be appropriately selected depending on the monomer used and the solubility of the copolymer to be produced.
- solvents may be used alone or in combination of two or more.
- the radical polymerization initiator is not particularly limited.
- peracids such as benzoyl peroxide
- persulfates such as potassium persulfate and ammonium persulfate.
- the content of the polymerizable compound having a carboxyl group in the vinyl copolymer can be appropriately selected according to the purpose without any particular limitation, for example, 5 to 50 mol. 15 to 35 mol% is particularly preferred. 10 to 40 mol% is more preferred.
- the developer resistance of the cured part (image part) may be insufficient.
- the molecular weight of the binder having a carboxyl group is not particularly limited and can be appropriately selected depending on the purpose.
- the mass average molecular weight is 2,000-300,
- the mass average molecular weight is less than 2,000, the strength of the film may be insufficient and stable production may be difficult immediately. If it exceeds 300,000, developability may be deteriorated.
- the noinder having a carboxyl group may be used alone or in combination of two or more.
- examples of the case where two or more binders are used in combination include, for example, two or more binders having different copolymer component forces, two or more binders having different mass average molecular weights, two or more binders having different dispersities, And the like.
- the binder having a carboxyl group a part or all of the carboxyl group may be neutralized with a basic substance.
- the binder may be used in combination with different types of resins such as polyester resin, polyamide resin, polyurethane resin, epoxy resin, polyvinyl alcohol, and gelatin.
- binder for example, a resin soluble in an alkaline solution described in Japanese Patent No. 2873889 can be used.
- the content of the binder in the photosensitive composition is not particularly limited and can be appropriately selected depending on the purpose. For example, 10 to 90% by mass is preferable 20 to 80% by mass. 40 to 80% by mass is particularly preferable.
- the content is less than 10% by mass, the alkali developability and the adhesion to a printed wiring board forming substrate (for example, a copper-clad laminate) may be deteriorated. The stability against image time and the strength of the cured film (tent film) may be reduced.
- the above content may be the total content of the binder and the polymer binder used in combination as necessary.
- the acid value of the binder is not particularly limited and may be appropriately selected depending on the purpose. For example, 70 to 250 (mgKOH / g) is preferred, 90 to 200 (mgKOH / g) is more preferred, and 100 to 180 (mgKOH / g) is particularly preferred.
- the acid value is less than 70 (mgKOHZg)
- developability may be insufficient
- resolution may be inferior
- permanent patterns such as wiring patterns may not be obtained in high definition
- the polymerizable compound is not particularly limited and may be appropriately selected depending on the purpose.
- a monomer or oligomer having at least one of a urethane group and an aryl group is preferably exemplified. Further, these preferably have two or more polymerizable groups.
- Examples of the polymerizable group include an ethylenically unsaturated bond (for example, a (meth) atalyl group, a (meth) acrylamide group, a styryl group, a beryl group such as a bull ester or a bull ether, a aryl ether, Aryl groups such as aryl esters) and polymerizable cyclic ether groups (for example, epoxy groups, oxetane groups, etc.), among which ethylenically unsaturated bonds are preferred.
- an ethylenically unsaturated bond for example, a (meth) atalyl group, a (meth) acrylamide group, a styryl group, a beryl group such as a bull ester or a bull ether, a aryl ether, Aryl groups such as aryl esters
- polymerizable cyclic ether groups for example, epoxy groups, oxetane groups
- the monomer having a urethane group is not particularly limited as long as it has a urethane group and can be appropriately selected according to the purpose.
- polyisocyanate having two or more isocyanate groups in the molecule examples thereof include adducts of cyanate compounds and butyl monomers having a hydroxyl group in the molecule.
- Examples of the polyisocyanate compound having two or more isocyanate groups in the molecule include hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, isophorone diisocyanate. , Xylene diisocyanate, toluene diisocyanate, phenol diisocyanate, norbornene diisocyanate, diphenyl diisocyanate, diphenol methane diisocyanate, 3, 3 'dimethyl 4, 4 '-Diphenyldiiso-si Diisocyanates such as cyanates; addition products of the diisocyanates with bifunctional alcohols (in this case, both ends are isocyanate groups); trimers such as burettes and isocyanurates of the diisocyanates; and the diisocyanates or diisocyanates; Examples thereof include polyfunctional alcohols such as trimethylolpropane, pentaerythritol, and glycerin, or
- Examples of the butyl monomer having a hydroxyl group in the molecule include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, diethylene glycol mono ( (Meth) acrylate, triethylene glycol mono (meth) acrylate, tetraethylene dallicol mono (meth) acrylate, otaethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, dipropylene glycol mono ( (Meth) acrylate, tripropylene glycol mono (meth) acrylate, tetrapropylene glycol mono (meth) acrylate, octapropylene glycol mono (meth) acrylate, polypropylene glycol mono ) Atalylate, dibutylene glycol mono (meth) acrylate, tribubutylene glycol mono (meth) acrylate, tetra
- examples of the monomer having a urethane group include tri ((meth) atallylooxy).
- Examples thereof include compounds having an isocyanurate ring such as ethyl) isocyanurate, di (meth) acrylated isocyanurate, ethylene oxide-modified isocyanuric acid tri (meth) acrylate.
- the compound represented by the following structural formula (13) or the structural formula (14) includes at least the compound represented by the above structural formula (14) from the viewpoint of the preferred tent property. These compounds may be used alone or in combination of two or more.
- R1 to R3 each represent a hydrogen atom or a methyl group.
- X1 to X3 represent alkylene oxides, which may be used alone or in combination of two or more.
- alkylene oxide group examples include an ethylene oxide group, a propylene oxide group, a butylene oxide group, a pentylene oxide group, a hexylene oxide group, a combination of these (random and block combinations) Among them, an ethylene oxide group, a propylene oxide group, a butylene oxide group, or a combination thereof is more preferable an ethylene oxide group or a propylene oxide group.
- ml to m3 represent an integer of 1 to 60, preferably 2 to 30, more preferably 4 to 15 force! / ⁇ .
- Y1 and Y2 represent a divalent organic group having 2 to 30 carbon atoms, such as an alkylene group, an arylene group, an alkylene group, an alkyl group. Ren group, carbo group (—CO 2), oxygen atom (-0—), sulfur atom (—S 2), imino group (—NH 2 —), hydrogen atom of imino group replaced with monovalent hydrocarbon group Mino group, sulfonyl group (
- S02-) or a combination of these is preferred.
- an alkylene group, arylene group or a combination of these is preferred.
- the alkylene group may have a branched structure or a cyclic structure.
- Preferred examples include a group, a dodecylene group, an octadecylene group, and any of the groups shown below.
- Examples of the arylene group that may be substituted with a hydrocarbon group include, for example, a phenylene group, a tolylene group, a diphenylene group, a naphthylene group, and the following groups.
- Examples of the combination of these include a xylylene group.
- Examples of the alkylene group, arylene group or a combination thereof may further have a substituent.
- substituents include a halogen atom (for example, fluorine atom, chlorine atom, bromine). Atom, iodine atom), aryl group, alkoxy group (for example, methoxy group, ethoxy group, 2-ethoxyethoxy group), aryloxy group (for example, phenoxy group), acyl group (for example, acetyl group, propionyl group), isyloxy group (For example, an acetoxy group, a butyryloxy group), an alkoxy carbo group (for example, a methoxy carbo ol group, an ethoxy carbo ol group), an aryl carboxy group (for example, a phenoxy carbo ol group), etc. Can be mentioned.
- n represents an integer of 3 to 6, and 3, 4 or 6 is preferable from the viewpoint of the raw material supply ability for synthesizing the polymerizable monomer.
- Z represents an n-valent (trivalent to hexavalent) linking group, and examples thereof include any of the groups shown below.
- X4 represents alkylene oxide.
- m4 represents an integer of 1 to 20.
- n represents an integer of 3-6.
- A represents an n-valent (trivalent to hexavalent) organic group.
- Examples of A include, for example, an n-valent aliphatic group, an n-valent aromatic group, or an alkylene group, an arylene group, an alkylene group, an alkylene group, a carbonyl group, an oxygen atom, Sulfur atoms, imino groups, and groups in which the hydrogen atom of the imino group is substituted with a monovalent hydrocarbon group or a combination of a substituted imino group or a sulfole group are preferred.
- An aromatic group or a group in which an alkylene group, an arylene group, or an oxygen atom is combined is more preferable.
- An n-valent aliphatic group, or a group in which an n-valent aliphatic group is combined with an alkylene group or an oxygen atom is more preferable. Particularly preferred.
- the number of carbon atoms of A is, for example, preferably an integer of 1 to 100, preferably an integer of 1 to 50, and more preferably an integer of 3 to 30.
- the n-valent aliphatic group may have a branched structure or a cyclic structure.
- the number of carbon atoms of the aliphatic group for example, an integer of 1 to 30 is preferable, and an integer of 1 to 20 is more preferable, and an integer of 3 to 10 is particularly preferable.
- an integer of 6 to: an integer of LOO is preferred
- An integer of 6 to 50 is more preferred
- An integer of 6 to 30 is particularly preferred.
- the n-valent aliphatic group or aromatic group may further have a substituent.
- substituents include a hydroxyl group, a halogen atom (for example, a fluorine atom, a chlorine atom). , Odor atom, iodine atom), aryl group, alkoxy group (for example, methoxy group, ethoxy group, 2-ethoxyethoxy group), aryloxy group (for example, phenoxy group), acyl group (for example,
- Acetyl group, propionyl group acyloxy group (for example, acetooxy group, butyryloxy group), alkoxy carbo yl group (for example, methoxy carbo yl group, ethoxy carbo yl group), aryloxy carbo yl group (For example, phenoxycarbonyl group) and the like.
- the alkylene group may have a branched structure or a cyclic structure! /.
- the number of carbon atoms of the alkylene group for example, an integer of 1 to 18 is preferable, and an integer of 1 to 10 is more preferable.
- the arylene group may be further substituted with a hydrocarbon group.
- the number of carbon atoms of the arylene group is preferably an integer of 6 to 18, more preferably an integer of 6 to 10.
- the number of carbon atoms of the monovalent hydrocarbon group of the substituted imino group is preferably an integer of 1 to 18, more preferably an integer of 1 to 10.
- Examples of the compounds represented by the structural formulas (13) and (14) include the following structural formulas (15)
- n, nl, n2 and m represent 1 to 60, 1 represents 1 to 20, and R represents a hydrogen atom or methyl. Represents a group.
- the monomer having an aryl group is not particularly limited as long as it has an aryl group, and can be appropriately selected depending on the purpose.
- a polyhydric alcohol compound having a aryl group a polyvalent amine compound.
- esters or amides of unsaturated carboxylic acids with at least one of polyamino amino alcohol compounds are examples of a polyhydric alcohol compound having a aryl group, a polyvalent amine compound.
- Examples of the polyalcohol compound, polyamine amine compound or polyvalent amino alcohol compound having an aryl group include, for example, polystyrene oxide, xylylenediol, dialkyl — —Hydroxyethoxy) benzene, 1,5 dihydroxy-1,2,3,4-tetrahydronaphthalene, 2,2 diphenyl 2,3 propanediol, hydroxybenzyl alcohol, hydroxyethyl resorcinol, 1 phenyl 1, 2 ethanediol, 2, 3, 5, 5, 6-tetramethyl- ⁇ xylene ⁇ , ⁇ '-diol, 1, 1, 4, 4-tetraphenol 1, 4, butanediol, 1, 1, 4, 4-tetraphenyl Ninolay 2 Butyne 1,4-Diol, 1, 1'-Bee 2-Naphthol, Dihydroxynaphthalene, 1,1'-Methylene Dioxy-2 Naphthol, 1, 2, 4
- xylylene bis (meth) acrylamide, novolac-type epoxy resin bisphenol A diglycidyl ether and other glycidyl compounds 0 compounds obtained by adding ⁇ unsaturated carboxylic acid, phthalic acid N trimellit Vinyl monomers that contain acid and other hydroxyl groups in the molecule Esterified products obtained, diallyl phthalate, triallyl trimellitic acid, diallyl benzendisulfonate, cationically polymerizable dibule ethers as polymerizable monomers (for example, bisphenol ⁇ Dibutyl ether), epoxy compounds (for example, novolak type epoxy resin, bisphenol A diglycidyl ether, etc.), bur esters (for example, dibutyl phthalate, dibuter terephthalate, divinylbenzene 1,3 disulfonate, etc.) , Still Compounds such as dibutenebenzene, p-aryl styrene, p-iso
- R4 and R5 each represents a hydrogen atom or an alkyl group.
- X5 and X6 each represents an alkylene oxide group, which may be used alone or in combination of two or more.
- the alkylene oxide group include an ethylene oxide group, a propylene oxide group, a butylene oxide group, a pentylene oxide group, a hexylene oxide group, and a combination of these (random or block combinations).
- an ethylene oxide group, a propylene oxide group, a butylene oxide group or a combination of these is preferred, and an ethylene oxide group and a propylene oxide group are more preferred.
- m5 and m6 are preferably integers of 1 to 60, more preferably integers of 2 to 30, and particularly preferably integers of 4 to 15.
- T represents a divalent linking group, and examples thereof include methylene, ethylene, MeC Me, CF3CCF3, CO, and S02.
- Arl and Ar2 represent an aryl group which may have a substituent, and examples thereof include phenylene and naphthylene.
- substituent include an alkyl group, an aryl group, an aralkyl group, a halogen group, an alkoxy group, or a combination thereof.
- the monomer having an aryl group examples include 2, 2 bis [4 (3 (meth) acryloxy 2 hydroxypropoxy) phenol] propane, 2, 2 bis [4 ((meth) acrylic. Oxyethoxy) phenol] propane, a phenolic OH group substituted with 2 to 20 ethoxy groups with 2, 2 bis (4- ((meth) attaroyloxypolyethoxy) ) Phenol) propane (eg, 2, 2 bis (4 — ((meth) attayloxyoxy) phenol) propane, 2,2 bis (4 — ((meth) attayloxytetra) Ethoxy) phenol) propane, 2,2 bis (4-(((meth)) aryloxypentaethoxy) phenol) Propane, 2,2 bis (4-(((meth)) aryloxydecaethoxy) (Phenol) propane, 2, 2 Bis (4— ((meth) atariloy) Oxypentadecaethoxy) phenol
- Examples of the polymerizable compound having a bisphenol skeleton and a urethane group include a bisphenol and an adduct such as ethylene oxide or propylene oxide, and a terminal hydroxyl group obtained as a polyaddition product.
- Examples of the compound include a compound having an isocyanate group and a polymerizable group (for example, 2-isocyanate ethyl (meth) acrylate, ⁇ , ⁇ -dimethyl-benzylbenzyl isocyanate) and the like.
- a polymerizable monomer other than the monomer containing a urethane group and the monomer having an aryl group may be used in combination as long as the characteristics as the pattern forming material are not deteriorated.
- Examples of the polymerizable monomer other than the monomer containing a urethane group and the monomer containing an aromatic ring include an unsaturated carboxylic acid (for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, And an amide of an unsaturated carboxylic acid and a polyvalent amine compound.
- an unsaturated carboxylic acid for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, And an amide of an unsaturated carboxylic acid and a polyvalent amine compound.
- ester monomer of the unsaturated carboxylic acid and the aliphatic polyhydric alcohol compound examples include, for example, (meth) acrylic acid ester, ethylene glycol di (meth) atrelate, and a number of ethylene groups of 2 to Polyethylene glycol di (meth) acrylate (eg, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, nonaethylene glycol di (meth) ) Tallate, dodecaethylene glycol di (meth) acrylate, tetradecaethylene glycol di (meth) acrylate, etc.), propylene glycol di (meth) acrylate, polypropylene glycol di (meth) having 2 to 18 propylene groups Atalylates (eg, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, tetrapropy
- (meth) acrylic acid esters from the viewpoint of easy availability, etc.
- Esters of the itaconic acid and the aliphatic polyhydric alcohol compound include, for example, ethylene glycol diitaconate, propylene glycol diitaconate, and 1,3-butanediol diester. Examples include itaconate, 1,4-monobutanediol diitaconate, tetramethylene glycol diitaconate, pentaerythritol diitaconate, and sorbitol tetritaconate.
- ester (crotonic acid ester) of the crotonic acid and the aliphatic polyhydric alcohol compound examples include ethylene glycol dicrotonate, tetramethylene glycol dicrotonate, pentaerythritol dicrotonate, and sorbitol. Examples include tetradicrotonate.
- esters (isocrotonic acid ester) of the isocrotonic acid and the aliphatic polyhydric alcohol compound examples include ethylene glycol diisocrotonate, pentaerythritol diisocrotonate, and sorbitol tetraisocrotonate. Etc.
- esters (maleic acid ester) of the maleic acid and the aliphatic polyhydric alcohol compound examples include ethylene glycol dimaleate, triethylene glycol dimaleate, pentaerythritol dimaleate, and sorbitol. Examples include tetramaleate.
- Examples of the amide from which the polyvalent amine compound and the unsaturated carboxylic acid compound are also derived include Examples include samethylene bis (meth) acrylamide, otatamethylene bis (meth) acrylamide, ethylene triamine tris (meth) acrylamide, and diethylenetriamine bis (meth) acrylamide.
- the polymerizable monomer for example, butanediol-1,4 diglycidyl ether, cyclohexane dimethanol glycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, dipropylene glycol diglycidyl ether, Obtained by adding ⁇ , ⁇ -unsaturated carboxylic acid to glycidyl group-containing compounds such as hexanediol diglycidyl ether, trimethylolpropane triglycidyl ether, pentaerythritol tetraglycidyl ether, glycerin triglycidyl ether, etc.
- Polyfunctional teraleate such as epoxy acrylates and metatarrelates such as epoxy acrylates reacted with (meth) acrylic acid and methacrylic acid, vol. 20, No.
- photocurable monomers and oligomers allylic esters (eg, diaryl phthalate, diaryl adipate, diaryl malonate, diaryl amide (eg, diary amide) Lucacetamide, etc.), cationically polymerizable dibutyl ethers (for example, butanediol 1,4-dibutyl ether, cyclohexane dimethanol dibutyl ether, ethylene glycol divinyl ether, diethylene glycol divinyl ether, dipropylene glycol resin) Vininoreethenore, hexanezinoresininoreatenore, trimethylonorepropan trivinyl ether, pentaerythritol tetravinyl ether, glycerin trivinyl ether, etc.), epoxy compounds (for example, butanediol 1,4-diglycidyl ether) Tellurium, cyclohex
- vinyl esters examples include divinyl succinate and divinyl adipate.
- polyfunctional monomers or oligomers may be used alone or in combination of two or more.
- the polymerizable monomer may be used in combination with a polymerizable compound (monofunctional monomer) containing one polymerizable group in the molecule, if necessary.
- Examples of the monofunctional monomer include a compound exemplified as a raw material of the binder, and a bibasic mono ((meth) ataryloxyalkyl ester) mono (noro) described in JP-A-6-236031.
- Monofunctional monomers such as hydroxyalkyl esters (for example, ⁇ -chloro-j8-hydroxypropynolee j8'—methacryloyloleoxyethylenole o-phthalate), patent 2744643, WOOOZ52529 pamphlet, patent 254 Examples thereof include compounds described in Japanese Patent No. 8016.
- the content of the polymerizable compound in the photosensitive composition is, for example, preferably 5 to 90% by mass, more preferably 15 to 60% by mass, and more preferably 20 to 50% by mass. .
- the strength of the tent film may be reduced, and if it exceeds 90% by mass, edge fusion during storage (extruding failure of the roll end force) may be deteriorated. is there.
- LOO mass% is preferable 20-: LOO mass% is more preferable 40-: LOO mass % Is particularly preferred.
- the photopolymerization initiator can be appropriately selected from known photopolymerization initiators that are not particularly limited as long as it has the ability to initiate polymerization of the polymerizable compound.
- the photopolymerization initiator is visible from the ultraviolet region.
- a photo-sensitive sensitizer that has photosensitivity to light causes some action with the photo-excited sensitizer and initiates cationic polymerization according to the type of monomer that may be an active agent that generates active radicals. Such an initiator may be used.
- the photopolymerization initiator preferably contains at least one component having a molecular extinction coefficient of at least about 50 within a range of about 300 to 800 nm (more preferably 330 to 500 nm).
- Examples of the photopolymerization initiator include halogenated hydrocarbon derivatives (for example, those having a triazine skeleton, those having an oxadiazole skeleton, etc.), hexarylbiimidazole, oxime derivatives, organic peroxides. Products, thio compounds, ketone compounds, aromatic onium salts, meta-octenes, and the like.
- halogenated hydrocarbons having a triazine skeleton, oxime derivatives, and ketone compounds Preference is given to hexarabirubiimidazole compounds.
- Examples of the hexarylbiimidazole include 2, 2 'bis (2-clonal phenol) 4, 4', 5, 5'-tetraphenyl biimidazole, 2, 2'-bis ( o Fluoro-phenyl) 4, 4 ', 5, 5' — Tetraphenyl bibiimidazole, 2, 2 ′ — Bis (2 bromophenol) 1, 4, 4 ', 5, 5' — Tetra-phenol biimidazole, 2, 2 '— Bis (2, 4 Diclonal Membrane) 4, 4', 5, 5 '— Tetraphenol Biimidazole, 2, 2' — Bis (2 — Diclonal Membrane) 4 , 4 ', 5, 5' — Tetra (3-methoxyphenol) biimidazole, 2, 2 '— Bis (2-chlorophenol) 1, 4, 4', 5, 5 '— Tetra (4-methoxyphenol) -L) biimidazole, 2,2'-bis (4-meth
- the biimidazoles can be easily prepared by the method disclosed in Bull. Chem. Soc. Japan, 33, 565 (1960) and J. Org. Chem, 36 (16) 2262 (1971), for example. Can be synthesized.
- Examples of the halogenated hydrocarbon compound having a triazine skeleton include compounds described in Wakabayashi et al., Bull. Chem. Soc. Japan, 42, 2924 (1969), and described in British Patent 1388492.
- a compound described in JP-A-53-133428, a compound described in DE 3337 024, a compound described in J. Org. Chem .; 29, 1527 (1964) by FC Schaefer et al., JP Examples include compounds described in JP-A 62-58241, compounds described in JP-A-5-281728, compounds described in JP-A-5-34920, compounds described in US Pat. No. 421 2976, and the like. .
- Examples of the compounds described in Wakabayashi et al., Bull. Chem. Soc. Japan, 42, 2924 (1969) include, for example, 2 phenol-4, 6 bis (trichloromethyl) -1, 3, 5 Triazine, 2 — (4 Chlorphenol) — 4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine, 2— (4 Toryl) — 4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine, 2— (4-Methoxyphenyl) —4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine, 2- (2,4 Dichlorophenol) — 4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine, 2, 4, 6 Tris (trichloromethyl) -1, 3, 5 Triazine, 2-methyl-4, 6 Bis (trichloromethyl) -1,
- Examples of the compound described in the British Patent 1388492 include 2-styryl
- Examples of the compound described in the specification of the German Patent 3337024 include, for example, 2- (4-stilinorefenenore) 4, 6 bis (trichloromethinole) 1, 1, 3, 5 triazine, 2- (4— (4-methoxystyryl) phenol) -4,6 bis (trichloromethyl) -1,3,5 triazine, 2- (1-naphthyl vinylenephenol) 1,4 bis (trichloromethyl) 1,3 , 5 Triazine, 2 Chlorostyryl 1,4,6 Bis (trichloromethyl) 1, 3,5 Triazine, 2— (4 Thiophene-1,2 Bilenphenol) 1,4,6 Bis (trichloromethyl) 1, 3, 5— Triazine, 2— (4 thiophene, 3 bilenphenol), 1, 4, 6 Bis (trichloromethyl), 1, 3, 5 Triazine, 2— (4 furan, 1 biphenylene) 1, 6 Bis (trichloromethyl) 1, 3, 5 Triazine and 2
- Examples of the compounds described in J. Org. Chem .; 29, 1527 (1964) by FC Schaefer et al. include 2-methyl-4,6 bis (tribromomethyl) -1,3,5 Triazine, 2, 4, 6 Tris (tribromomethyl) 1, 3, 5 Triazine, 2, 4, 6 Tris (dibromomethyl) 1, 3, 5 Triazine, 2 Amamino-4-methyl-6 Tri (Bromomethyl) — 1, 3, 5 triazine and 2-methoxy-4-methyl 6 trichloromethyl 1, 3, 5 triazine.
- Examples of the compounds described in JP-A-62-58241 include 2- (4-phenylethyl-sulfur) -4,6 bis (trichloromethyl) -1,3,5 triazine, 2— (4— Naphthyl 1-Ethurhue-Lu 4, 6 Bis (trichloromethyl) 1, 3, 5 Triazine, 2— (4— (4 Tril-Ethyl) phenol) — 4, 6 Bis (trichloromethyl) —1 , 3, 5 — Triazine, 2- (4— (4-Methoxyphenyl) Etulfur) 4, 6— Bis (Trimethyl) (Methylromethyl) 1, 3, 5 Triazine, 2— (4— (4-Isopropylphenol) Phenyl) 4, 6 Bis (trichloromethyl) 1, 3, 5 Triazine, 2— (4— (4 Ethylph E-lütl)) 1) 4, 6 bis (trichloromethyl) 1, 3, 5 triazine and the like.
- Examples of the compound described in JP-A-5-281728 include 2- (4 trifluoromethylphenol) -4,6 bis (trichloromethyl) -1,3,5 triazine, 2- (2, 6—Difluorophenol) —4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine, 2- (2, 6 Dichlorophenol) — 4, 6 Bis (trichloromethyl) —1, 3, 5 Triazine 2- (2, 6 dibromophenol) 1,6,6 bis (trichloromethyl) 1, 3, 5 triazine and the like.
- Examples of the compounds described in JP-A-5-34920 include 2,4 bis (trichloromethyl) -6- [4- (N, N-diethoxycarboromethylamino) -3-bromophenol. ] — 1, 3, 5 triazine, trihalomethyl-s triazine compounds described in US Pat. No. 4,239,850, and 2, 4, 6 tris (trichloromethyl) —s triazine, 2- (4-chloro) (Fuel) 4, 6-bis (tribromomethyl) s triazine.
- Examples of the compounds described in the above-mentioned US Pat. No. 4,212,976 include compounds having an oxadiazole skeleton (for example, 2 trichloromethyl-5 phenyl 1,3,4-oxadiazole, 2 trichloromethyl).
- Examples of the oxime derivative suitably used in the present invention include the following structural formulas (39) to (39)
- ketone compound examples include benzophenone, 2-methylbenzophenone, 3-methylbenzophenone, 4-methylbenzophenone, 4-methoxybenzophenone, 2-chlorobenzophenone, 4-chlorobenzophenone, and 4-bromo.
- metacathenes examples include bis (7? 5-2, 4 cyclopentagen 1-yl) -bis (2, 6 difluoro 3- (1H pyrrole-1-yl)- (Phenol) Titanium, 7? 5-Cyclopentagel 6-Tame-Lu Iron (1 +) -Hexafluorophosphate (1), JP-A-53-133428, JP-B-57-1819 And compounds described in US Pat. No. 57-6096 and US Pat. No. 3,615,455.
- Atalidine derivatives for example, 9-phenol lysine, 1,7 bis (9, 9,-atalysyl) heptane, etc.
- N-phenol glycine etc.
- Halogen compounds eg, carbon tetrabromide, felt rib mouth methylsulfone, felt trichloromethyl ketone, etc.
- coumarins eg, 3- (2-benzofuroyl) -7-jetylaminocoumarin, 3- (2 Benzofuroyl)-7-(1-Pyrrolidyl) coumarin, 3 Benzoyl 7 Jetylaminocoumarin, 3— (2-Methoxybenzoyl) 7 Jetylamino nocoumarin, 3— (4-Dimethylaminobenzol) 7-Je Tyraminocoumarin, 3, 3, 1 carborubis (5,7-di-n-propoxycoumarin), 3, 3, -carborubis (7-deethylaminocoumarin), 3-benzoyl 7- Methoxycoumarin, 3- (2-Furoyl) 7-Jetylaminocoumarin, 3- (4-Jetylaminocinnamoyl) 7-Jetylamino
- amines e.g., 4-dimethylaminobenzoic acid ethyl, 4-dimethylaminobenzoic acid n-butyl, 4-dimethylaminobenzoic acid phenethyl, 4-dimethylaminobenzoic acid 2-phthalimidoethyl, 4-dimethylaminobenzoic acid 2 methacryloyloxy) Shetyl, pentamethylenebis (4-dimethylaminobenzoate), 3-dimethylaminobenzoic acid phenethyl, pentamethylene ester, 4-dimethylaminobenzaldehyde, 2 dimethyl 4-dimethylaminobenzaldehyde, 4 dimethylaminobenzil alcohol, ethyl ( 4-dimethylaminobenzoyl) acetate, 4-piveridinoacetophenone, 4-dimethylaminobenzoin, N, N dimethyl-4-toluidine, N, N-
- Acylphosphine oxides eg bis (2,4,6 trimethylbenzoyl) -phenolphosphine oxide, bis (2,6 dimethoxybenzoyl) 2,4,4 trimethyl-pentylphenol Ruphosphinoxide, LucirinTPO, etc.
- the photopolymerization initiators may be used alone or in combination of two or more.
- combinations of two or more include, for example, a combination of hexarylbiimidazole and 4 aminoketones described in US Pat. No. 3,549,367, a benzothiazole compound described in Japanese Patent Publication No. 51-48516 and trihalomethyl-s— Combinations of triazine compounds, or aromatic ketone compounds (e.g. thixanthone) and hydrogen donors (e.g. dialkyl) And a combination of hexarylbiimidazole and titanocene, a combination of coumarins, titanocene and phenolglycine.
- the content of the photopolymerization initiator in the photosensitive composition is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, and particularly preferably 0.5 to 15% by mass. preferable.
- the sensitizer is excited by active energy rays and interacts with other substances (for example, radical generator, acid generator, etc.) (for example, energy transfer, electron transfer, etc.), thereby causing radicals and It is possible to generate useful groups such as acids.
- the sensitizer is, for example, the above-described component in that the S / S can be easily adjusted to 0.6 to 1.4.
- the maximum absorption wavelength in the sensitizer can be appropriately selected depending on the purpose without particular limitation, and is preferably 380 to 420 nm force S, more preferably 390 to 415 nm force S, 395 to 415 power especially preferred!
- the sensitizer having a maximum absorption wavelength of 380 to 420 nm can be appropriately selected from known sensitizers without particular limitations.
- known polynuclear aromatics for example, pyrene) Perylene, triphenylene
- xanthenes for example, fluorescein, eosin, erythrosine, rhodamine B, rose bengal
- cyanans for example, indocarbyanine, thiacarbocyanine, oxacarbocyanine
- merocyanine E.g., merocyanine, carbomerocyanine
- thiazines e.g., thionine, methylene blue, toluidine blue
- atalidines e.g., atarizine orange, chloroflavin, acriflavine
- anthraquinones e.g., anthraquinone
- squalium For example, squalium
- Examples of the combination of the photopolymerization initiator and the sensitizer include, for example, an electron transfer-type initiator system described in JP-A-2001-305734 [(1) an electron-donating initiator and a sensitizing dye (2) Electron-accepting initiators and sensitizing dyes, (3) Electron-donating initiators, sensitizing dyes and electron-accepting initiators (ternary initiation system)], and the like.
- the other components include polymerization inhibitors, surfactants, plasticizers, color formers, and colorants. Furthermore, adhesion promoters to the substrate surface and other auxiliaries (for example, pigments, conductive particles, fillers, antifoaming agents, flame retardants, leveling agents, peeling accelerators, antioxidants, perfumes, A thermal crosslinking agent, a surface tension adjusting agent, a chain transfer agent, etc.) may be used in combination.
- auxiliaries for example, pigments, conductive particles, fillers, antifoaming agents, flame retardants, leveling agents, peeling accelerators, antioxidants, perfumes, A thermal crosslinking agent, a surface tension adjusting agent, a chain transfer agent, etc.
- the polymerization inhibitor can be appropriately selected according to the purpose without any particular limitation.
- the polymerization inhibitor generally decreases the sensitivity of the photosensitive composition when it is contained in the photosensitive composition, the decrease in sensitivity can be suppressed and the resolution can be improved.
- Z is a halogen atom, a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an amino group, or an alkyl group having 1 to 20 carbon atoms.
- a phenyl group such as a phenyl group or a naphthyl group, an amino group, a mercapto group, an alkyl mercapto group having 1 to 10 carbon atoms, a carboxyalkyl group having 1 to 10 carbon atoms in an alkyl group, or carbon.
- n represents an integer of 0 or more.
- halogen atom examples include fluorine, chlorine, bromine, iodine, astatine and the like.
- Examples of the alkyl group having 1 to 20 carbon atoms include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a sec -butyl group, a tert-butyl group, a pentyl group, a hexyl group, Examples include heptyl, octyl, nonyl, decyl, undecyl, tridecyl, tetradecyl, pentadecyl, octadecyl, nonadecyl and icosyl groups.
- Examples of the cycloalkyl group having 3 to 10 carbon atoms include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a cyclooctyl group.
- Examples of the aryl group substituted with an alkyl group having 1 to 20 carbon atoms include a methyl phenyl group, an ethyl phenyl group, a propyl phenol group, and the like.
- alkyl mercapto group having 1 to 10 carbon atoms examples include a methyl mercapto group, an ethyl mercapto group, and a propyl mercapto group.
- Examples of the carboxyalkyl group having 1 to 10 carbon atoms of the alkyl group include a carboxymethyl group, a carboxyethyl group, a carboxypropyl group, and a carboxybutyl group.
- alkoxy group having 1 to 20 carbon atoms examples include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group.
- Examples of the group consisting of a heterocyclic ring include an ethylene oxide group, a furan group, a thiophene group, a pyrrole group, a thiazole group, an indole group, and a quinoline group.
- Examples of the compound represented by the structural formula (73) include alkyl catechols (eg, catechol, resorcinol, 1,4-hydroquinone, 2-methylcatechol, 3 methyl force teconole, 4-methinore force teconole, 2 ethinore Force Teconole, 3 Ethinore Force Teconole, 4-Ethylcatechol, 2 Propylcatechol, 3 Propylcatechol, 4 Propinore Force Teconole, 2—n-Butinore Force Teconole, 3—n—Butinore Force Teconole, 4 n—Butinore Force Teconole, 2 tert-butinoleic power Teconole, 3 tert-butinoleic power Teconole, 4-tert-butylcatechol, 3,5-ditert-butylcatechol, etc.), alkylresorcinol (for example, 2-methylresorcinol, 4 —Methyl
- the content of the polymerization inhibitor, the polymerizable compound in pairs to 0.005 to 0.5 mass 0/0 force S preferably of the photosensitive composition, 0.01 to 0.2 mass more preferably 0/0 power S, 0. 02 to 0. 1% by weight is particularly preferred. If the content is less than 0.005% by mass, the stability during storage may be reduced, and if it exceeds 0.5% by mass, the sensitivity to active energy rays may be reduced.
- the plasticizer may be added in order to control film physical properties (flexibility) of the photosensitive layer described later.
- plasticizer examples include dimethyl phthalate, dibutyl phthalate, diisopropyl phthalate, diheptyl phthalate, dioctyl phthalate, dicyclohexyl phthalate, ditridecyl phthalate, butyl benzyl phthalate, diisodecyl phthalate, diphenyl phthalate, diphenyl phthalate.
- Phthalic acid esters such as ril phthalate and octyl capryl phthalate; triethylene glycol diacetate, tetraethylene glycol diacetate, dimethyl dallicose phthalate, ethino retino eno ethino reglycolate, methyl phthal yl acetyl glycolate, buty Glycol esters such as norephthalino lebutinoglycolate and triethylene glycol dicabrylate; tricresyl phosphate, triphenyl Phosphate esters such as sulfate; 4 Amides such as toluenesulfonamide, benzenesulfonamide, Nn-butylbenzenesulfonamide, Nn-butylacetamide; diisobutyl adipate, dioctyl adipate, dimethyl seba Aliphatic dibasic acid esters such as keto, dibutyl sebacate,
- the content of the plasticizer is preferably 0.1 to 50% by mass, more preferably 0.5 to 40% by mass, based on all the components of the photosensitive composition. Mass% is particularly preferred.
- the color former should be added to give a visible image (printing function) to the photosensitive layer described later after exposure.
- the color former examples include tris (4-dimethylaminophenol) methane (leucocrystalline violet), tris (4-jetylaminophenol) methane, and tris (4-dimethylamino).
- -2 Methylphenol) methane Tris (4-Detylamino 2 Methylphenol) methane, Bis (4 Dibutylaminophenol) 1 [4 (2-Cyanethyl) methylaminophenol] Methane, Bis (4 Dimethylamino) Aminophenols) 2 aminotriarylmethanes such as quinolylmethane and tris (4 dipropylaminophenol) methane; 3, 6-bis (dimethylamino) 9-phenol-xanthine, 3 -amino-6 dimethylamino-2-methyl 9—Aminoxanthines such as (2 black-mouthed phenyl) xanthine; 3, 6 bis (jetylamino) 9 (2 ethoxycarbonyl) thi
- Organic amines that can oxidize eg, 4,4,1 ethylenediamine, diphenylamine, N, N dimethylaniline, 4,4'-methylenediamintriphenylamine, N vinylcarbazole
- triarylmethane compounds such as leuco crystal violet are preferable.
- the color former is combined with a halogen compound for the purpose of coloring the leuco body.
- halogen compound include halogenated hydrocarbons (for example, carbon tetrabromide, iodine form, bromoethylene, odorous methylene, amyl bromide, odorous isoamyl, yowiyamyl, isobutylene bromide, iodine Butyl bromide, diphenylmethyl bromide, hexachloroethane, 1,2-dibromoethane, 1,1,2,2-tetrabromoethane, 1,2-dib-mouthed 1,1,2-trichloroethane, 1, 2,3-tribromopronokun, 1-bromo-4-chlorobutane, 1,2,3,4-tetrabromobutane, tetrachlorocyclopropene, hexachlorocyclopentadiene, di
- organic halogen compounds halogen compounds having two or more halogen atoms bonded to the same carbon atom are preferred. Three halogen atoms are added to one carbon atom. More preferred is a halogenated compound.
- the organic halogen compounds may be used alone or in combination of two or more. Among these, tribromomethyl phenol sulfonate and 2,4 bis (trichloromethyl) 6 phenol triazole are preferable.
- the content of the color former is preferably from 0.01 to 20 mass%, more preferably from 0.05 to 10 mass%, based on all the components of the photosensitive composition. 5% by mass is particularly preferred. Further, the content of the halogen compound is preferably 0.005 to 5% by mass, more preferably 0.001 to 1% by mass with respect to all components of the photosensitive composition.
- the colorant is not particularly limited and may be appropriately selected according to the purpose.
- known pigments or dyes such as red, green, blue, yellow, purple, magenta, cyan, and black are known.
- Victoria ⁇ Pure Blue BO CI 42595
- Auramin CI 41000
- Huat ⁇ ⁇ Black HB CI 26150
- Monorai ⁇ 'Yellow I GT CI Pigment' Yellow 12
- Permanent 'Yellow GR CI Pigment' Yellow 17
- Permanent 'Yellow HR CI Pigment' Yellow 83
- Permanent 'Power One Min FBB CI Pigment' Red 146
- Hoster Balm Red ESB CI Pigment 'Violet 19
- Permanent 'Ruby FBH CI Pigment' Red 11
- Huster 'Pink B Supra CI Pigment' Red 81
- Monolite' First 'Black B C.I. Pigment'
- colorant suitable for production of a color filter for example, C. I. Pigment
- the average particle size of the colorant is not particularly limited. For example, 5 ⁇ m or less is preferable, and 1 ⁇ m or less is more preferable. In the case of producing a color filter, the average particle diameter is preferably 0.5 ⁇ m or less.
- a dye can be used for the purpose of coloring a photosensitive layer, which will be described later, or imparting storage stability in order to improve handleability.
- the dye examples include brilliant green (for example, sulfate thereof), eosin, ethyl violet, erythine cin B, methyl green, crystal violet, basic fuchsin, phenolphthalein, 1,3 diphenyltriazine, alizarin red S, Thymolphthalein, methyl violet 2B, quinaldine red, rose bengal, meta-youro, thymolsulfophthalein, xylenol blue, methyl orange, orange IV, diphenyltylocarbazone, 2, 7 diclonal fluorescein, paramethyl red , Congo Red, Benzopurpurin 4B, a Naphthyl Red, Nile Blue A, Phenacetalin, Methyl Violet, Malachite Green, Parafuchsin, Oil Blue # 603 (Orient Chemical Co., Ltd.), Damin B, Rotamin 6G, Victoria 'and the like can be illustrated Pure Blue BOH, cationic dyes Among these (
- the cationic dye may be a residue of an organic acid or an inorganic acid, such as bromic acid, iodic acid, sulfuric acid, phosphoric acid, oxalic acid, methanesulfonic acid, toluenesulfonic acid, etc. Such as residues
- the content of the dye is preferably from 0.001 to 10 mass%, more preferably from 0.01 to 5 mass%, based on all components of the photosensitive composition. 2% by mass is particularly preferred.
- a known adhesion promoter may be used for each layer.
- adhesion promoter examples include adhesion promoters described in JP-A-5-11439, JP-A-5-341532, and JP-A-6-43638.
- Examples include thione and 2-mercapto 5-methylthiothiadiazole, triazole, tetrazole, benzotriazole, carboxybenzotriazole, amino group-containing benzotriazole, and silane coupling agents.
- the content of the adhesion promoter is preferably 0.001 to 20% by mass, more preferably 0.01 to 10% by mass, based on all components of the photosensitive composition. 1% by mass to 5% by mass is particularly preferred.
- the photosensitive composition may be, for example, an organic sulfur compound, a peroxide, a redox compound, an azo compound, or the like described in Chapter 5 of "Light Sensitive Systems" by J. Kosa. May contain diazo compounds, photoreducing dyes, organic halogen compounds and the like.
- organic sulfur compound examples include di-n-butyl disulfide, dibenzyl disulfide, 2-mercaprobenthiazole, 2-mercaptobenzoxazole, thiophenol, etyltrichloromethanesulfate, 2- Examples include mercaptobens imidazole.
- Examples of the peroxide include diethyl butyl peroxide, benzoyl peroxide, and methyl ethyl ketone peroxide.
- the redox compound also serves as a combination force of a peroxide compound and a reducing agent, and examples thereof include ferrous ions and persulfate ions, ferric ions and peroxide compounds. .
- Examples of the azo and diazo compounds include ⁇ , ⁇ '-azobis-ylibuchi-tolyl, 2-azobis-2-methylbuty-mouth-tolyl, and diaminonium of 4-aminodiphenylamine.
- Examples of the photoreducible dye include rose bengal, erythricin, eosin, acriflavine, riboflavin, and thionine.
- a known surfactant can be added.
- the surfactant can be appropriately selected from, for example, an anionic surfactant, a cationic surfactant, a non-one surfactant, an amphoteric surfactant, and a fluorine-containing surfactant.
- the content of the surfactant is 0.001 with respect to the solid content of the photosensitive resin composition.
- the content is less than 0.001% by mass, the effect of improving the surface shape may not be obtained, and when it exceeds 10% by mass, the adhesion may be lowered.
- a fluorine-based surfactant containing 40 mass% or more of fluorine atoms in a carbon chain of 3 to 20, and a small number counted from the non-bonded end.
- Preferable examples also include polymer surfactants having acrylate or metatalylate having a fluoroaliphatic group in which a hydrogen atom bonded to at least 3 carbon atoms is fluorine-substituted as a copolymerization component.
- the photosensitive composition for solder resist has a maximum spectral sensitivity in the wavelength range of 380 to 420 nm, and a minimum exposure amount S capable of forming a pattern at 400 nm.
- 400 410 it can be appropriately selected according to the purpose for which there is no particular restriction.
- it is appropriately selected according to the purpose, such as a noinder, a polymerizable compound, a photopolymerization initiator, a thermal cross-linking agent.
- Other composition powers will be selected.
- the spectral sensitivity is obtained by laminating a pattern forming material on a substrate to be processed, for example, by a method described in Photopolymer Technology (Ao Yamayama, published by Nikkan Kogyo Shimbun, 1988, page 262).
- the photosensitive layer described later of the photosensitive laminate is measured using a spectral sensitivity measuring device.
- a spectral sensitivity measuring device for light dispersed from a light source such as a xenon lamp or a tungsten lamp, the exposure wavelength changes linearly in the horizontal axis direction, and the exposure intensity changes logarithmically in the vertical axis direction.
- the pattern is formed for each sensitivity of each exposure wavelength by performing development processing after irradiation with exposure. From the height of the obtained pattern, Calculate the exposure energy that can be turned, and plot the maximum peak in the spectral sensitivity curve created by plotting the wavelength on the horizontal axis and the inverse of the exposure energy on the vertical axis.
- the minimum exposure amount at which the pattern can be formed is determined as the exposure energy at which an image can be formed, which is calculated from the height of the pattern formed in the spectral sensitivity measurement described above.
- the minimum exposure amount at which the pattern can be formed is determined by changing the development conditions such as the type of developer, development temperature, development time, etc., and the minimum exposure amount at which a pattern can be formed under the optimum development conditions. means.
- the optimum development conditions can be appropriately selected according to the purpose without any particular limitation.
- the developer having a pH of 8-12 is 25-40.
- C a condition of spraying at a pressure of 0.05 to 0.5 MPa to completely remove the uncured region.
- the minimum exposure amount S capable of forming a pattern at 400 nm is 300 miZcm 2 or less.
- the minimum exposure amount S capable of forming a pattern at 410 nm is 300 miZcm 2 or less.
- 1.1 is particularly preferred.
- the minimum exposure amount S capable of forming a pattern at 405 nm is 300 mj / cm 2.
- the following is 50 mjZcm 2 , more preferably lOOmjZcm 2 .
- the noinder is more preferably soluble in an alkaline aqueous solution, which is preferably swellable in an alkaline aqueous solution.
- the binder exhibiting swellability or solubility with respect to the alkaline aqueous solution for example, those having an acidic group are preferably exemplified.
- the noinder is not particularly limited and can be appropriately selected according to the purpose.
- JP-A-51-131706, JP-A-52-94388, JP-A-64H5 examples thereof include epoxy atalate toy compounds having acidic groups described in Kaihei 2-97513, JP-A-3-289656, JP-A-61-243869, JP-A-2002-296776, and the like.
- phenol novolak type epoxy acrylate, tarezol novolak epoxy acrylate, bisphenol A type epoxy acrylate, etc. for example, epoxy resin is mixed with polyfunctional epoxy compound (meth) acrylic acid.
- a dibasic acid anhydride such as phthalic anhydride, tetrahydrophthalic anhydride, and succinic anhydride are added.
- the molecular weight of the epoxy vacancy compound is preferably 1,000 to 200,000 force S, more preferably 2,000 to 100,000.
- the molecular weight is less than 1,000, the tackiness of the surface of the photosensitive layer described later may become strong, and the film quality may become brittle or the surface hardness may deteriorate after the photosensitive layer described later is cured. If it exceeds 200,000, developability may be poor.
- An acrylic resin having at least one polymerizable group such as an acidic group and a double bond described in JP-A-6-295060 can also be used.
- at least one polymerizable double bond in the molecule for example, an acrylic group such as a (meth) acrylate group or a (meth) acrylamide group, a carboxylic acid bull ester, a bull ether, a aryl ether.
- Various polymerizable double bonds such as tellurium can be used.
- acrylic resin containing a carboxyl group as an acidic group glycidyl ester of unsaturated fatty acid such as glycidyl atylate, glycidyl methacrylate, cinnamic acid, or cyclohexenoxide in the same molecule.
- examples thereof include a compound obtained by adding an epoxy group-containing polymerizable compound such as a compound having an epoxy group and a (meth) attalyloyl group.
- Containing hydroxyl groups such as hydroxyalkyl (meth) attalylate A compound obtained by adding a polymerizable compound is also included.
- these commercially available products include “Kaneka Resin AX, manufactured by Kaneka Chemical Co., Ltd.”, “CYCLOM ER A-200; manufactured by Daicel Chemical Industries, Ltd.”, “CYCLOMER M” —200; manufactured by Daicel Chemical Industries, Ltd. ”can be used.
- reaction product of hydroxyalkyl attalylate or hydroxyalkyl metatalylate described in JP-A-50-59315 with any one of polycarboxylic acid anhydride and epihalohydrin can be used.
- a compound obtained by adding an acid anhydride to an epoxy atrelate having a fluorene skeleton described in JP-A-5-70528, a polyamide (imide) resin described in JP-A-11-288087 Polyimide precursors described in JP-A-2-097502 and JP-A-11-282155 can be used. These may be used alone or as a mixture of two or more.
- a copolymer obtained by reacting one or more primary amine compounds with an anhydride group of a maleic anhydride copolymer can also be used.
- the copolymer is represented by the following structural formula (74) and contains at least maleamic acid unit B having maleic acid-formamide structure and unit A having no maleic acid-sulfamide structure.
- it is a copolymer.
- the unit A may be one type or two or more types.
- the maleamic acid-based copolymer means a binary copolymer
- the unit When A is two kinds, the maleamic acid copolymer means a terpolymer.
- the unit A includes an aryl group which may have a substituent and a butyl monomer which will be described later, and the glass transition temperature (Tg) of the butyl monomer homopolymer is less than 80 ° C.
- Tg glass transition temperature
- a combination with a certain vinyl monomer (c) is preferred.
- R 3 and R 4 represent either a hydrogen atom or a lower alkyl group.
- X and y represent mole fractions of the repeating units, for example, when the unit A is one, X is 85-50 mol 0/0, y is 15 to 50 mole 0/0.
- R 1 for example, (COOR 10 ), (—CONR R 12 ), an aryl group which may have a substituent, (—OCOR 13 ), (— Substitutional groups such as OR 14 ) and (— COR 15 ) can be mentioned.
- R 1G to R 15 represent any one of a hydrogen atom (1H), an alkyl group which may have a substituent, an aryl group, and an aralkyl group.
- the alkyl group, aryl group and aralkyl group may have a cyclic structure or a branched structure.
- R 1C> to R 15 include, for example, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butynole, sec butyl, t-butinole, pentinole, arinole, n-hexyl, and cyclohexyl. , 2-ethylhexyl, dodecyl, methoxyethyl, phenyl, methylphenyl, methoxyphenyl, benzyl, phenethyl, naphthyl, black-and-white phenyl, and the like.
- R 1 examples include benzene derivatives such as, for example, a file, a-methyl file, 2-methyl file, 3 methyl file, 4 methyl file, 2,4 dimethyl file, etc .; n Propyloxycarbonyl, n-Butyloxycarbonyl, Pentyloxycarbonyl, Hexyloxycarbonyl, n-Butyloxycarbonyl, n-Hexyloxycarbonyl, 2-Ethylhexyloxycarbonyl, Methyloxycarbonyl Etc.
- R 2 may have a substituent! /, But may be an alkyl group, an aryl group, an aralkyl group. Etc. These may have a cyclic structure or a branched structure. Specific examples of R 2 include, for example, benzyl, phenethyl, 3-phenol 1-propyl, 4-phenol 1-butinole, 5 phenol-1-pentinole, 6-phenol 1- Hexinole, a Methylbenzyl, 2 Methylbenzyl, 3 Methylbenzyl, 4 Methylbenzyl, 2 Mono (P-tolyl) ethyl, j8-Methylphenethyl, 1-Methyl-3-phenylpropyl, 2 —Black Benzynole, 3 Black Mouth Benzinore, 4-black mouth Benzore, 2 Fluoro Benzinore, 3— Fluoro Benzinore, 4 Fluoro Benzinole, 4
- the binder is, in particular, (a) maleic anhydride, (b) an aromatic vinyl monomer, and (c) a vinyl monomer, which is a homopolymer of the bull monomer.
- a copolymer obtained by reacting a primary amine compound with a vinyl monomer having a glass transition temperature (Tg) of less than 80 ° C and an anhydride group of a powerful copolymer is a copolymer. preferable.
- a copolymer comprising the component (a) and the component (b) can obtain a high surface hardness of the photosensitive layer described later, but it may be difficult to ensure laminating properties.
- the copolymer comprising the component (a) and the component (c) although the laminating property can be ensured, it may be difficult to ensure the surface hardness.
- the aromatic vinyl monomer is not particularly limited and may be appropriately selected depending on the purpose, and increases the surface hardness of the photosensitive layer formed using the photosensitive composition of the present invention.
- a compound having a glass transition temperature (Tg) of the homopolymer of 80 ° C or higher is preferable, and a compound having a temperature of 100 ° C or higher is more preferable.
- Preferable examples include styrene derivatives such as C). These may be used alone or in combination of two or more.
- the vinyl monomer needs to have a glass transition temperature (Tg) of a homopolymer of the vinyl monomer of less than 80 ° C, preferably 40 ° C or less, more preferably 0 ° C or less. .
- Tg glass transition temperature
- Examples of the primary amine compound include benzylamine, phenethylamine, 3-phenol-1-propylamine, 4-phenol-l-butylamine, 5-ferro-l-pentylamine, and 6-phenylamine. Hexylamine, ⁇ -methylbenzylamine, 2-methylbenzylamine, 3-methylbenzylamine, 4-methylbenzylamine, 2 ( ⁇ -tolyl) ethylamine, ⁇ -methylphenethylamine, 1-methyl-3 phenol -Rupropylamine, 2-Chlorobenzylamine, 3-Chlorobenzylamine, 4-Chlorobenzylamine, 2-Fluorobenzylamine, 3-Fluorobenzylamine, 4-Fluorobenzylamine, 4-Bromophenethylamine, 2 — (2 black mouth) ethylamine, 2— (3 black mouth) ethylamine, 2— (4 black mouth) ethylamine , 2- (2 Furorofu
- the primary amine compounds may be used alone or in combination of two or more.
- the reaction amount of the primary amine compound needs to be 0.1 to 1.2 equivalents, preferably 0.1 to 1.0 equivalents, relative to the anhydride group. When the reaction amount exceeds 1.2 equivalents, the solubility may be remarkably deteriorated when one or more primary amine compounds are reacted.
- the content of (a) maleic anhydride in the binder is preferably 15 to 50 mol%, more preferably 20 to 45 mol%, and particularly preferably 20 to 40 mol%. If the content is less than 15 mol%, alkali developability cannot be imparted, and if it exceeds 50 mol%, alkali resistance deteriorates, and the copolymer becomes difficult to synthesize. Permanent pattern formation may not be possible.
- the content of the (b) aromatic bule monomer and (c) the bulle monomer having a glass transition temperature (Tg) of the homopolymer of less than 80 ° C. in the binder is 20 respectively. ⁇ 60mol%, 15-40mol% is preferred. When the content satisfies the numerical range, both surface hardness and laminating properties can be achieved.
- the acrylic resin, epoxy acrylate having a fluorene skeleton, polyamide (imide), a compound obtained by reacting an anhydride group of the maleic anhydride copolymer with a primary amine compound, or a polyimide precursor The molecular weight of the binder such as 3,000-500,000 force S good Better than 5, OOO-IOO, 000 power! /. When the molecular weight force is less than 3,000, the tackiness of the surface of the photosensitive layer described later may become strong, and the film quality may become brittle or the surface hardness may deteriorate after the photosensitive layer described later is cured. If it exceeds 500,000, developability may deteriorate.
- the solid content of the binder in the solid content of the photosensitive composition is preferably 5 to 80% by mass, more preferably 10 to 70% by mass. If the solid content is less than 5% by mass, the film strength of the photosensitive layer may be weakened or the tackiness of the surface of the photosensitive layer may be deteriorated. If it exceeds 50% by mass, Exposure sensitivity may decrease.
- the polymerizable compound is not particularly limited and can be appropriately selected depending on the purpose, and has at least one addition-polymerizable group in the molecule and has a boiling point of 100 ° C. or higher at normal pressure.
- Preferred examples of the compound include at least one selected from monomers having a (meth) acryl group.
- the monomer having a (meth) acryl group is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include polyethylene glycol mono (meth) acrylate and polypropylene glycol mono (meth) acrylate. Monofunctional acrylates and monofunctional methallylates such as rate and phenoxychetyl (meth) acrylate; polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylol ethane triacrylate, trimethylol propane triacrylate , Trimethylolpropane ditalylate, neopentylglycol di (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (Meth) acrylate, dipentaerythritol penta (meth) acrylate
- Polyester acrylates which are reaction products of epoxy resin and (meth) acrylic acid, etc.
- Examples include polyfunctional talates and metatalates.
- trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hex (meth) acrylate, and dipentaerythritol pent (meth) acrylate are particularly preferred.
- the solid content of the polymerizable compound in the solid content of the photosensitive composition is preferably 5 to 50% by mass, more preferably 10 to 40% by mass. If the solid content is less than 5% by mass, problems such as deterioration in developability and reduction in exposure sensitivity may occur, and if it exceeds 50% by mass, the adhesiveness of the photosensitive layer may become too strong. Yes, not preferred.
- the photopolymerization initiator can be appropriately selected from known photopolymerization initiators that are not particularly limited as long as it has the ability to initiate polymerization of the polymerizable compound.
- the photopolymerization initiator is visible from the ultraviolet region.
- a photo-sensitive sensitizer that has photosensitivity to light causes some action with the photo-excited sensitizer and initiates cationic polymerization according to the type of monomer that may be an active agent that generates active radicals. Such an initiator may be used.
- the photopolymerization initiator preferably contains at least one component having a molecular extinction coefficient of at least about 50 within a range of about 300 to 800 nm (more preferably 330 to 500 nm).
- Examples of the photopolymerization initiator include halogenated hydrocarbon derivatives (for example, those having a triazine skeleton, those having an oxadiazole skeleton, those having an oxadiazole skeleton, etc.), phosphine oxide, hexaryl biphenyl.
- halogenated hydrocarbon derivatives for example, those having a triazine skeleton, those having an oxadiazole skeleton, those having an oxadiazole skeleton, etc.
- phosphine oxide hexaryl biphenyl.
- Examples include imidazole, oxime derivatives, organic peroxides, thio compounds, ketone compounds, aromatic onium salts, and ketoximate.
- Examples of the halogenated hydrocarbon compound having a triazine skeleton include the same compounds as those used for the photosensitive composition for dry film resist.
- oxime derivatives that can be suitably used in the present invention include, for example, 3-benzoylominobutane 2 on, 3 acetoximinobutane 2 on, 3 propionyloxy Iminobutane 2 on, 2 acetoximinopentane 3 on, 2 acetoximino — 1-phenolpropane 1-one, 2-benzoyloximino 1-phenolpropane 1 on, 3— (4 toluenesulfo-loxy ) Iminobutane 2 on and 2 ethoxycarboximino 1-phenolpropane 1-on.
- acyl phosphine oxides are used, for example, bis (2, 4, 6 trimethylbenzoyl) -phenol phosphine oxide, bis (2, 6 dimethoxy). (Benzyl) -2, 4, 4 Trimethyl-pentylphenylphosphine oxide, LucirinTPO, etc.
- examples of the photopolymerization initiator other than the above include the same compounds as those used for the photosensitive composition for dry film resist.
- Examples of the ketone compound include the same compounds as those used for the photosensitive composition for dry film resist, 4, 4 'bis (dialkylamino) benzophenones (for example, 4, 4). , —Bis (dimethylamino) benzophenone, 4,4, —bisdicyclohexylamino) benzophenone, 4,4 ′ bis (jetylamino) benzophenone, 4,4 ′ bis (dihydroxyethylamino) benzophenone, 4-methoxy 4′-dimethylaminobenzophenone, 4 , 4, -dimethoxybenzophenone, 4-dimethylaminobenzophenone, 4-dimethylaminoacetophenone, benzyl, anthraquinone, 2-t-butylanthraquinone, 2-methylanthraquinone, phenanthraquinone, xanthone, thixanthone, 2-chloro Thioxanthone
- a sensitizer can be added in addition to the photopolymerization initiator for the purpose of adjusting the exposure sensitivity and the photosensitive wavelength in exposure to the photosensitive layer described later.
- the minimum exposure can be easily adjusted by selecting an initiator and combining it with a sensitizer.
- the S ZS can be easily prepared so as to be 0.6 to 1.6.
- the maximum absorption wavelength in the sensitizer can be appropriately selected according to the purpose without particular limitation, and is preferably 380 to 420 nm force S, more preferably 390 to 415 nm force S, 395 to 415 power especially preferred!
- the sensitizer can be appropriately selected depending on visible light, ultraviolet light, or visible light laser as a light irradiation means to be described later.
- the sensitizer is excited by active energy rays and interacts with other substances (eg, radical generator, acid generator, etc.) (eg, energy transfer, electron transfer, etc.). It is possible to generate useful groups such as radicals and acids.
- substances eg, radical generator, acid generator, etc.
- useful groups such as radicals and acids.
- the same sensitizer as that used in the photosensitive composition for a dry film resist can be used.
- Examples of the combination of the photopolymerization initiator and the sensitizer include, for example, an electron transfer type initiator system described in JP-A-2001-305734 [(1) an electron donor initiator and a sensitizing dye (2) Electron-accepting initiators and sensitizing dyes, (3) Electron-donating initiators, sensitizing dyes and electron-accepting initiators (ternary initiation system)], and the like.
- the content of the sensitizer is preferably 0.05 to 30% by mass, more preferably 0.1 to 20% by mass, based on all components in the photosensitive composition. 2 to 10% by mass is particularly preferable. If the content is less than 0.05% by mass, the sensitivity to active energy rays may be reduced, the exposure process may take time, and productivity may be reduced. In some cases, the sensitizer may precipitate from the photosensitive layer described later.
- the photopolymerization initiators may be used singly or in combination of two or more.
- the photopolymerization initiator can be appropriately selected according to the purpose without any particular limitation, and can be applied to a laser beam having a wavelength of 405 nm in the later-described exposure, such as the phosphine oxides, the ⁇ —Aminoalkyl ketones, the triazine skeleton
- a combination with a sensitizer such as a derivative, or titanocene may be mentioned.
- the content of the photopolymerization initiator in the photosensitive composition is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, and 0.5 to 15% by mass. Is particularly preferred.
- the thermal crosslinking agent is not particularly limited and can be appropriately selected according to the purpose. In order to improve the film strength after curing of the photosensitive layer formed using the photosensitive composition, developability, etc.
- an epoxy resin compound having at least two oxsilane groups in one molecule and an oxetane compound having at least two oxetal groups in one molecule can be used. .
- the epoxy resin compound examples include bixylenol type or biphenol type epoxy resin ( ⁇ 4000; manufactured by Japan Epoxy Resin Co., Ltd.) or a mixture thereof, a heterocyclic epoxy resin having an isocyanurate skeleton (“TEPIC; "Nissan Chemical Industry Co., Ltd.”, "Araldite PT810; Ciba 'Specialty' Chemicals Co., Ltd.”), bisphenol A type epoxy resin, novolac type epoxy resin, bisphenol F type epoxy resin, hydrogenated bisphenol A Type epoxy resin, glycidinoreamine type epoxy resin, hydantoin type epoxy resin, cycloaliphatic epoxy resin, trihydroxyphenylmethane type epoxy resin, bisphenol S type epoxy resin, bisphenol A novolak Type epoxy resin, tetraf-roll ethane type epoxy resin, glycid Ruphthalate resin, tetraglycidyl xylenol ethane resin, naphthalene group-containing epoxy resin ("ESN
- Examples of the oxetane compound include bis [(3-methyl-3-oxetanylmethoxy) methyl] ether, bis [(3-ethyl-3-oxeta-lmethoxy) methyl] ether, 1, 4-bis [(3-methyl-3-oxeta-lmethoxy) methyl] benzene, 1,4-bis [(3-ethyl-3-oxeta-lmethoxy) methyl] benzene, (3-methyl-3-oxeta-l) methyl acrylate , (3 Echiru 3 Okiseta -) methyl Atari rate, (3-methyl 3-Okiseta -) methyl meth Tari rate, (3 Echiru 3 Okiseta - Le) methylate Rume Tatari rate or oligomers thereof or copolymers
- novolac resin poly (p-hydroxystyl)
- the solid content in the solid content of the photosensitive composition of the epoxy resin compound or oxetane compound is preferably 1 to 50 mass%, more preferably 3 to 30 mass%. If the solid content is less than 1% by mass, the hygroscopicity of the cured film is increased, resulting in deterioration of insulation, or solder heat resistance, electroless resistance to plating, etc. If it exceeds 50% by mass, poor developability may cause a reduction in exposure sensitivity, which is not preferable.
- dicyandiamide benzyldimethylamine, 4- (dimethylamino) N, N-dimethylbenzylamine, 4-methoxy N , N Amine compounds such as dimethylbenzylamine, 4-methyl-N, N dimethylbenzylamine; Quaternary ammonium salt compounds such as triethylbenzylammochloride; Block isocyanate compounds such as dimethylamine Imidazole, 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 4-phenolimidazole, 1-cyanethyl-2-phenolimidazole, 1- (2-cyanethyl) 2 ethyl-4 -Imidyl derivatives bicyclic amidine compounds such as methyl imidazole And its salts; phosphorus compounds such as tripheny
- the solid content in the solid content of the photosensitive composition of the epoxy resin, the oxetane compound, and a compound capable of promoting thermal curing of these and carboxylic acid is usually 0.01 to 15% by mass. It is.
- a polyisocyanate compound described in JP-A-5-9407 can be used, and the polyisocyanate compound is composed of at least two isocyanates. It may be derived from an aliphatic, cycloaliphatic or aromatic group-substituted aliphatic compound containing a monoto group.
- a mixture of 1,3 phenolic diisocyanate and 1,4 phenolic diisocyanate, 2, 4 and 2,6 toluene diisocyanate, 1, 3 and 1,4-xylylene range Isocyanate, bis (4 isocyanate phenyl) methane, bis (4 isocyanate cyclohexyl) methane, isophorone diisocyanate, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, etc.
- a difunctional isocyanate a polyfunctional alcohol of the bifunctional isocyanate with trimethylolpropane, pentalysitol, glycerin, etc .; an adduct of the alkylene oxide adduct of the polyfunctional alcohol with the bifunctional isocyanate Isomers; cyclic trimers such as hexamethylene diisocyanate, hexamethylene 1,1,6 diisocyanate and derivatives thereof; etc. And the like.
- photosensitive composition of the present invention for the purpose of improving the storage stability of the pattern forming material of the present invention, / may be a compound obtained by reacting a blocking agent with the isocyanate group of the polyisocyanate or its derivative.
- isocyanate group blocking agent examples include isopropanol, tert.-butanol and the like. ⁇ - Ratatams such as force prolatata; phenol, cresol, p- tert.-Butinolehuenore, p- sec.-Butinolehuenore, p- sec.-Aminoleuenoure, p Phenols such as -octylphenol and p-norphenol; heterocyclic hydroxyl compounds such as 3-hydroxypyridin and 8-hydroxyquinoline; dialkylmalonate, methylethylketoxime, acetylacetone, alkyl Active methylene compounds such as acetate acetate oxime, acetate oxime, and cyclohexanone oxime; In addition to these, compounds having at least one polymerizable double bond and at least one block isocyanate group in the molecule described in JP-A-6-295060 can be used.
- a melamine derivative may be used as the thermal crosslinking agent.
- the melamine derivative include methylol melamine, alkylated methylol melamine (a compound obtained by etherifying a methylol group with methyl, ethyl, butyl, etc.). These may be used alone or in combination of two or more.
- hexamethylated methylol melamine is particularly preferred because alkylated methylol melamine is preferred because it has good storage stability and the surface hardness of the photosensitive layer is effective in improving the film strength itself of the cured film. preferable.
- the solid content in the solid content of the photosensitive composition of the thermal crosslinking agent is preferably 1 to 40% by mass, more preferably 3 to 20% by mass.
- the solid content is less than 1% by mass, no improvement in the strength of the cured film is observed, and when it exceeds 40% by mass, the developability and the exposure sensitivity may decrease.
- the other components include polymerization inhibitors, plasticizers, colorants (colored pigments or dyes), extender pigments, and the like, and adhesion promoters to the substrate surface and other auxiliary agents (for example, conductive particles, fillers, antifoaming agents, flame retardants, leveling agents, peeling accelerators, antioxidants, fragrances, surface tension adjusting agents, chain transfer agents, etc.) may be used in combination.
- auxiliary agents For example, conductive particles, fillers, antifoaming agents, flame retardants, leveling agents, peeling accelerators, antioxidants, fragrances, surface tension adjusting agents, chain transfer agents, etc.
- properties such as stability, photographic properties, film physical properties, etc., of the intended photosensitive composition or pattern forming material described later can be adjusted.
- Polymerization inhibitor for solder resist The polymerization inhibitor may be added in order to prevent thermal polymerization or temporal polymerization of the polymerizable compound.
- polymerization inhibitor examples include the same polymerization inhibitors as those used in the photosensitive composition for dry film resist, such as 4-methoxyphenol.
- the content of the polymerization inhibitor is preferably 0.001 to 5% by mass, more preferably 0.005 to 2% by mass with respect to the polymerizable compound, and 0.01 to 1% by mass. Is particularly preferred. When the content is less than 0.001% by mass, stability during storage may be reduced, and when it exceeds 5% by mass, sensitivity to active energy rays may be reduced.
- the coloring pigment can be appropriately selected according to the purpose without any particular restriction.
- coloring used in a photosensitive composition for dry film resist such as phthalocyanine green, Victoria 'Pure 1 Blue BO (CI 42595), etc.
- the same agent as the agent can be appropriately selected and used.
- the solid content of the color pigment in the solid content of the photosensitive composition can be determined in consideration of the exposure sensitivity, resolution, etc. of the photosensitive layer during the formation of a permanent pattern. Different forces depending on the type of face Generally 0.05 to: L0% by mass is preferred 0.1 to 5% by mass Force is more preferred.
- the extender pigment can be appropriately selected according to the purpose for which there is no particular limitation, and examples thereof include inorganic pigments and organic fine particles.
- the photosensitive composition for a solder resist is intended to improve the surface hardness of the permanent pattern or to keep the coefficient of linear expansion low, or to keep the dielectric constant or dielectric loss tangent of the cured film itself low.
- the inorganic pigment or organic fine particles can be added.
- the inorganic pigment can be appropriately selected from known ones that are not particularly limited.
- kaolin, barium sulfate, barium titanate, key oxide powder, fine powder oxide oxide, vapor phase method silica none Examples include regular silica, crystalline silica, fused silica, spherical silica, talc, clay, magnesium carbonate, calcium carbonate, aluminum oxide, aluminum hydroxide, and my strength.
- the average particle diameter of the inorganic pigment is preferably less than 10 m, more preferably 3 m or less. If the average particle size is 10 m or more, the resolution may deteriorate due to light scattering.
- the organic fine particles can be appropriately selected according to the purpose without particular limitation, and examples thereof include melamine resin, benzoguanamine resin, and crosslinked polystyrene resin. Further, silica having an average particle diameter of 1 to 5 / ⁇ , an oil absorption of about 100 to 200 m 2 Zg, spherical porous fine particles made of a crosslinked resin, and the like can be used.
- the amount of the extender pigment added is preferably 5 to 60% by mass. When the addition amount is less than 5% by mass, the linear expansion coefficient may not be sufficiently reduced. When the addition amount exceeds 60% by mass, when the cured film is formed on the surface of the photosensitive layer, The film quality becomes fragile, and when a wiring is formed using a permanent pattern, the function of the wiring as a protective film may be impaired.
- adhesion promoter for the solder resist in order to improve the adhesion between the respective layers or the adhesion between the photosensitive layer and the substrate, the same as the known so-called adhesion promoter used in the photosensitive composition for the dry film resist.
- the adhesion promoter can be used in each layer with the same content.
- the pattern forming material is a film in which a photosensitive layer made of the photosensitive composition of the present invention, a protective film, and other layers appropriately selected according to the purpose are laminated on a support, The difference between the photosensitive composition for dry film resist and the photosensitive composition for solder resist is included.
- the form of the pattern forming material can be appropriately selected according to the purpose without any particular limitation.
- the photosensitive layer and the protective film are provided on the support in this order.
- the form which has the said photosensitive layer and the said protective film in this order is mentioned.
- the photosensitive layer may be a single layer or a plurality of layers.
- the support is not particularly limited and may be appropriately selected depending on the purpose, and it is preferable that the photosensitive layer can be peeled off and the light transmittance is good. Further, the surface smoothness is preferred. Is more preferable.
- the support material is preferably made of a synthetic resin and transparent.
- a synthetic resin for example, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyethylene, cellulose triacetate, cellulose diacetate, poly ( (Meth) acrylic acid alkyl ester, poly (meth) acrylic acid ester copolymer, polyvinyl chloride, polyvinyl alcohol, polycarbonate, polystyrene, cellophane, polysalt-vinylidene copolymer, polyamide, polyimide, butyl chloride acetic acid
- plastic films such as bulle copolymer, polytetrafluoroethylene, polytrifluoroethylene, cellulosic film and nylon film can be mentioned, and among these, polyethylene terephthalate is particularly preferable. These may be used alone or in combination of two or more.
- the support for example, the supports described in JP-A-4-208940, JP-A-5-80503, JP-A-5-173320, JP-A-5-72724, and the like are used. I can do it.
- the thickness of the support is not particularly limited, and can be appropriately selected according to the purpose.
- ⁇ column; t is preferably 4 to 300 111 pieces, preferably 5 to 175 111 pieces. Preferred 1 ⁇ 0
- the shape of the support is not particularly limited and can be appropriately selected according to the purpose.
- the support is wound around a cylindrical core and wound into a long roll for storage.
- the length of the long pattern forming material is not particularly limited.
- a range force of 10 m to 20, OOOm can be appropriately selected.
- slitting may be performed so that the user can easily use, and a long body in the range of i00m to l, OOOm may be formed into a roll.
- the support is wound up so as to be the outermost side.
- the roll-shaped pattern forming material may be slit into a sheet shape. From the viewpoint of protecting the end face and preventing edge fusion during storage, it is preferable to install a separator (especially moisture-proof and with desiccant) on the end face, and the packaging is also moisture-permeable. Low, prefer to use material.
- the photosensitive layer is formed by any difference between the photosensitive composition for dry film resist and the photosensitive composition for solder resist.
- the portion provided in the pattern forming material of the photosensitive layer is not particularly limited and can be appropriately selected according to the purpose, and is usually laminated on the support.
- the thickness of the photosensitive layer is not particularly limited and can be appropriately selected according to the purpose.
- ⁇ column; t is 3 to: LOO ⁇ m force, preferably 5 to 70 ⁇ m force ⁇ More preferred! / ⁇ .
- the protective film has a function of preventing and protecting the photosensitive layer from being stained and damaged.
- the portion of the protective film provided over the pattern forming material is not particularly limited and is appropriately selected according to the purpose. Usually, it is provided on the photosensitive layer.
- protective film examples include those used for the support, silicone paper, polyethylene, paper laminated with polypropylene, polyolefin or polytetrafluoroethylene sheet, and among these, polyethylene film, polypropylene, etc. A film is preferred.
- the thickness of the protective film is not particularly limited and can be appropriately selected according to the purpose. For example, 5 to: LOO ⁇ m is preferable, and 8 to 30 ⁇ m is more preferable.
- the adhesive force A of the photosensitive layer and the support and the adhesive force B of the photosensitive layer and the protective film satisfy the relationship of adhesive force A> adhesive force B.
- Examples of the combination of the support and the protective film include, for example, polyethylene terephthalate z polypropylene, polyethylene terephthalate z polyethylene, polychlorinated bur Z cellophane, polyimide Z polypropylene, polyethylene terephthalate z polyethylene terephthalate. Etc.
- the above-described adhesive force relationship can be satisfied by surface-treating at least one of the support and the protective film. The surface treatment of the support may be performed in order to increase the adhesive force with the photosensitive layer.
- coating of an undercoat layer corona discharge treatment, flame treatment, ultraviolet irradiation treatment , High frequency irradiation treatment, glow discharge irradiation treatment, active plasma irradiation treatment, laser beam irradiation treatment, and the like.
- the coefficient of static friction between the support and the protective film is preferably 0.3 to 1.4, more preferably 0.5 to 1.2 force! / !.
- the protective film may be surface-treated in order to adjust the adhesion between the protective film and the photosensitive layer.
- an undercoat layer made of a polymer such as polyorganosiloxane, fluorinated polyolefin, polyfluoroethylene, or polybutyl alcohol is formed on the surface of the protective film.
- the undercoat layer is formed by applying the polymer coating solution to the surface of the protective film and then drying at 30 to 150 ° C (particularly 50 to 120 ° C) for 1 to 30 minutes. Can do.
- the heating temperature is not particularly limited and may be appropriately selected depending on the purpose. For example, 70 to 130 ° C is preferable, and 80 to 110 ° C is more preferable.
- the pressure of the pressurization is not particularly limited and can be appropriately selected according to the purpose. Excluding the column, 0.01 to: L OMPa force is preferable, 0.05 to: L OMPa force is more preferable than ⁇ It's better!
- the apparatus for performing at least one of the heating and pressurization can be appropriately selected according to the purpose without particular limitation.
- a heat press for example, Taisei Laminate Earthen, VP — ⁇
- vacuum laminator for example, MVLP500, manufactured by Meiki Seisakusho
- MVLP500 manufactured by Meiki Seisakusho
- the other layer is not particularly limited and can be appropriately selected according to the purpose. Examples thereof include a cushion layer, an oxygen barrier layer (PC layer), a release layer, an adhesive layer, a light absorption layer, and a surface protective layer. You may have a layer. These layers may be used alone or in combination of two or more.
- the cushion layer is a layer that melts and flows when laminated under vacuum heating conditions that have no tackiness at room temperature.
- the PC layer is usually a coating film having a thickness of about 0.5 to 5 m, which is formed mainly of polybulal alcohol.
- the photosensitive composition for dry film resist and the photosensitive composition for solder resist are produced by the same production method.
- a pattern forming material in which the photosensitive composition for dry film resist is laminated it has a maximum spectral sensitivity in a wavelength range of 380 to 420 nm, and a minimum exposure amount capable of forming a pattern at 400 nm S force ⁇ OOmjZcm 2 or less At 410nm
- a sensitizer having a maximum absorption wavelength of 380 to 420 nm is contained in the photosensitive composition solution (photosensitive layer).
- the pattern forming material in which the photosensitive composition for a solder resist is laminated it has a maximum value of spectral sensitivity in a wavelength range of 380 to 420 nm, and a minimum exposure amount S capable of forming a pattern at 400 nm S Force 300mjZcm 2 or less, pattern at 410nm
- the minimum exposure amount that can be formed is S power ⁇ OOmjZcm 2 or less, and S and S
- the photosensitive layer can be prepared as follows:
- a sensitizer having a maximum absorption wavelength of 380 to 420 nm is contained in a photosensitive composition solution (photosensitive layer).
- the S ZS can be easily adjusted to 0.6 to 1.6.
- 0.01 to 5% by mass is preferable with respect to the total amount of the photosensitive layer, and 0.05 to 3% by mass is more preferable with 0.1 to 1% by mass being particularly preferable.
- the photosensitive composition solution is prepared by dissolving, emulsifying or dispersing the material contained in the photosensitive layer in water or a solvent.
- the photosensitive composition solution can be appropriately selected according to the purpose without any particular limitation, such as methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, n-hexanol and the like.
- Alcohols such as tilketone, methylisobutylketone, cyclohexanone, diisoptylketone; ethyl acetate, butyl acetate, n-amyl acetate, methyl sulfate, ethyl propionate, dimethyl phthalate, ethyl benzoate and methoxypropyl acetate Esters; aromatic hydrocarbons such as toluene, xylene, benzene, and ethylbenzene; halogenated carbon tetrachloride, trichloroethylene, chloroform, 1, 1, 1-trichloroethane, methylene chloride, monochlorobenzene, etc.
- aromatic hydrocarbons such as toluene, xylene, benzene, and ethylbenzene
- halogenated carbon tetrachloride trichloroethylene, chloroform, 1, 1, 1-trichloro
- Hydrocarbons Tetrahydrofuran, Jetyl ether, Ethylene Glycolanol Monomethinoreatenore, Ethylene Glyconore Monoethylenoleetenole, 1-Methoxy 2-propanol ethers; Dimethylformamide, Dimethylacetamide, Dimethyl Examples include sulfooxide and sulfolane. These may be used alone or in combination of two or more. In addition, a known surfactant may be added.
- the photosensitive composition solution is applied onto the support and dried to form a photosensitive layer, thereby producing a pattern forming material.
- the method for applying the photosensitive composition solution is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include spraying, roll coating, spin coating, slit coating, and etching. Various coating methods such as a rouge coating method, curtain coating method, die coating method, gravure coating method, wire bar coating method and knife coating method can be mentioned.
- the drying conditions vary depending on each component, the type of solvent, the ratio of use, etc., but are usually 60 to 110 ° C. for 30 seconds to 15 minutes.
- the pattern forming material of the present invention has a substantially constant sensitivity distribution in the wavelength range of 400 to 410 nm, it is suitable for forming various patterns exposed to light in the range of 400 to 410 nm, wiring patterns, etc. It can be suitably used for the formation of permanent patterns, for the production of liquid crystal structural members such as color filters, columns, ribs, spacers, partition walls, etc., and for the formation of patterns such as holograms, micromachines, and proofs. In particular, it can be suitably used in the pattern forming method and pattern forming apparatus of the present invention.
- the photosensitive laminate is a substrate in which a photosensitive layer made of the photosensitive composition of the present invention and other layers appropriately selected according to the purpose are laminated on a substrate, and the photosensitive composition includes A photosensitive composition for dry film resist and a photosensitive composition for solder resist are included.
- the substrate is to be transferred to which the pattern forming material of the present invention is transferred, and can be appropriately selected according to the purpose without any particular limitation.
- the substrate has a high surface smoothness and is uneven. Anything with a certain surface can be selected arbitrarily.
- a plate-like substrate is preferred, and a so-called substrate is used.
- Specific examples include a substrate for producing a known printed wiring board, a glass plate (such as a soda glass plate), a synthetic resin film, paper, and a metal plate.
- Examples of the method for producing the photosensitive laminate include, as the first aspect, a method of applying the photosensitive composition to the surface of the substrate and drying, and as the second aspect, the pattern forming material of the present invention. A method of transferring and laminating at least one of heating and pressurization is mentioned.
- the photosensitive composition is applied and dried on the substrate to form a photosensitive layer.
- the coating and drying method can be appropriately selected according to the purpose without any particular limitation.
- the photosensitive composition is dissolved, emulsified or dispersed on the surface of the substrate in water or a solvent.
- a method of laminating by preparing a photosensitive composition solution, applying the solution directly, and drying the solution.
- the solvent of the photosensitive composition solution is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include the same solvents as those used for the pattern forming material. These may be used alone or in combination of two or more. In addition, a known surfactant may be added.
- the coating method and drying conditions can be appropriately selected according to the purpose without any particular limitation, and the same method and conditions as those used for the pattern forming material are used.
- the thickness of the photosensitive layer can be appropriately selected according to the purpose for which there is no particular restriction.
- ⁇ column; t is 3 to: LOO ⁇ m force, preferably 5 to 70 ⁇ m force ⁇ More preferred! / ⁇ .
- the butter of the present invention is applied to the surface of the substrate.
- the film forming material is laminated while performing at least one of heating and pressing.
- the protective film is preferably peeled off and laminated so that the photosensitive layer overlaps the substrate.
- the heating temperature and pressure can be appropriately selected according to the purpose for which there is no particular limitation. For example, 15 to 180 ° C is preferable, and 60 to 140 ° C is more preferable.
- the pressure of the pressurization can be appropriately selected according to the purpose for which there is no particular limitation. If it is omitted, 0.1 to 1. OMPa force is preferable, and 0.2 to 0.8 MPa force is more preferable. It's better!
- the apparatus for performing at least one of the heating can be appropriately selected depending on the purpose for which there is no particular limitation, and examples thereof include a laminator (for example, Taisei Laminate Earthen, VP-II). .
- a laminator for example, Taisei Laminate Earthen, VP-II.
- the pattern forming apparatus of the present invention includes any one of the pattern forming material and the photosensitive laminate of the present invention, and has at least light irradiation means and light modulation means.
- the pattern forming method of the present invention includes at least an exposure step, and includes other steps appropriately selected.
- the said pattern formation apparatus of this invention is clarified through description of the said pattern formation method of this invention.
- the said exposure process is a process of exposing with respect to the photosensitive layer in the pattern formation material of this invention.
- the pattern forming material of the present invention is as described above.
- the exposure target can be appropriately selected according to the purpose without particular limitation as long as it is the photosensitive layer in the pattern forming material.
- the pattern forming material is formed on a substrate. It is preferable to be performed on the laminated body.
- the substrate can be appropriately selected from publicly known materials that are not particularly limited to those having a high surface smoothness, a force having an uneven surface, and a plate-like substrate (substrate). More specifically, a known printed wiring board forming substrate (for example, copper-clad laminate), a glass plate (for example, soda glass plate), a synthetic resin film, paper, a metal plate, etc. may be mentioned. .
- the layer structure in the laminate is appropriately selected depending on the purpose without particular limitation.
- a layer configuration including the substrate, the photosensitive layer, the barrier layer, the cushion layer, and the support in this order is preferable.
- the method for forming the laminate can be appropriately selected depending on the purpose without any particular limitation, but at least one of heating and pressurizing the pattern forming material on the substrate is performed! While preferred, laminating.
- the heating temperature can be appropriately selected according to the purpose for which there is no particular restriction. For example, 15 to 180 ° C is preferable, and 60 to 140 ° C is more preferable.
- the pressure of the pressurization is a force that can be appropriately selected according to the purpose for which there is no particular limitation.
- F column; t is preferably 0.1 to 1. OMPa force, 0.2 to 0.8 MPa force ⁇ More preferred! / ⁇ .
- the apparatus for performing at least one of heating and pressurization can be appropriately selected according to the purpose of restriction, and examples thereof include a laminator and a vacuum laminator.
- the apparatus for performing at least one of the heating and pressurization can be appropriately selected according to the purpose of restriction, such as a laminator (for example, VP- ⁇ manufactured by Taisei Laminator Co., Ltd.) Are preferable.
- a laminator for example, VP- ⁇ manufactured by Taisei Laminator Co., Ltd.
- the exposure of the laminate can be appropriately selected depending on the purpose without any particular limitation.
- the photosensitive layer may be exposed through the support, the cushion layer, and the barrier layer. After the support, cushion layer and barrier layer are peeled off, the photosensitive layer may be exposed.
- the exposure can be appropriately selected according to the purpose without any particular limitation, and powers such as digital exposure, analog exposure, etc. Among these, digital exposure is preferable.
- the digital exposure can be appropriately selected according to the purpose without any particular limitation.
- a control signal is generated based on pattern formation information to be formed, and is modulated according to the control signal. It is preferable to use a light.
- the digital exposure means can be appropriately selected according to the purpose without any particular restriction.
- Examples thereof include a light modulation unit that modulates the irradiated light.
- the light modulating means can be appropriately selected according to the purpose without any limitation as long as light can be modulated.
- the light modulating means preferably has n pixel portions.
- the light modulation means having the n picture elements can be appropriately selected according to the purpose without any particular limitation, and for example, a spatial light modulation element is preferable.
- Examples of the spatial light modulation element include a digital micromirror device (DMD), a MEMS (Micro Electro Mechanical Systems) type spatial light modulation element (S LM; Special Light Modulator), and transmission by an electro-optic effect.
- Examples include optical elements that modulate light (PLZT elements) and liquid crystal light shirts (FLC). Among these, DMD is preferred.
- the light modulation means preferably includes pattern signal generation means for generating a control signal based on pattern information to be formed.
- the light modulating means modulates light according to the control signal generated by the pattern signal generating means.
- control signal can be appropriately selected according to the purpose for which there is no particular limitation.
- a digital signal is preferably used.
- the DMD 50 has an SRAM cell (memory cell) 60 and a large number of micromirrors 62 (for example, 1024 x 768) that make up each pixel. It is a mirror device arranged in a shape. In each pixel, a micromirror 62 supported by a support column is provided at the top, and a highly reflective material such as aluminum is deposited on the surface of the micromirror 62. Note that the reflectance of the micromirror 62 is 90% or more, and the arrangement pitch thereof is 13. as an example in both the vertical and horizontal directions.
- a silicon gate CMOS SRAM cell 60 manufactured on a normal semiconductor memory manufacturing line is disposed directly below the micromirror 62 via a support including a hinge and a yoke. The entire structure is monolithically configured. ing.
- the microphone mirror 62 supported by the column is ⁇ degrees (eg ⁇ 12 °) with respect to the substrate side on which the DMD50 is placed with the diagonal line at the center. ) Tilted within the range.
- Figure 2A shows the micromirror 62 in the on state, tilted to + ⁇ degrees
- Figure 2 ⁇ shows the micromirror 62 in the off state— Indicates tilted state. Therefore, by controlling the inclination of the micro mirror 62 in each pixel of the DMD 50 as shown in FIG. 1 according to the pattern information, the laser light B incident on the DMD 50 is inclined in the direction of the inclination of each micro mirror 62. Reflected to.
- FIG. 1 shows an example of a state in which a part of the DMD 50 is enlarged and the micromirror 62 is controlled to + ⁇ degrees or ⁇ degrees.
- On / off control of each micromirror 62 is performed by the controller 302 connected to the DMD 50.
- a light absorber (not shown) is arranged in the direction in which the laser beam reflected by the off-state microphone aperture mirror 62 travels.
- the DMD 50 is arranged with a slight inclination so that the short side forms a predetermined angle ⁇ (for example, 0.1 ° to 5 °) with the sub-scanning direction.
- Fig. 3 (b) shows the scanning trajectory of the reflected light image (exposure beam) 53 by each micromirror when the DMD 50 is not tilted
- Fig. 3 (b) shows the scanning trajectory of the exposure beam 53 when the DMD 50 is tilted.
- the DMD50 has a micromirror array force with a number of micromirrors arranged in the longitudinal direction (eg, 1024) A force with a lot of ⁇ 1_ (eg, 756 threads) arranged in the short direction As shown, by tilting the DMD 50, the pitch P of the scanning trajectory (scan line) of the exposure beam 53 by each micromirror P 1S, the pitch P of the scanning line when the DMD 50 is not tilted
- the scanning width w in this case is substantially the same.
- high-speed modulation a method for increasing the modulation speed in the optical modulation means (hereinafter referred to as “high-speed modulation”) will be described.
- the light modulation means can control any less than n pixel elements arranged continuously from the n pixel elements according to pattern information.
- the modulation speed per line is determined in proportion to the number of pixels to be used. Using only this increases the modulation rate per line.
- the DMD50 microphone When laser light B is irradiated from the fiber array light source 66 to the DMD50, the DMD50 microphone The laser light reflected when the mouth mirror is in the on state is imaged on the pattern forming material 150 by the lens systems 54 and 58. In this way, the laser light emitted from the fiber array light source 66 is turned on / off for each pixel, and the pattern forming material 150 is exposed in approximately the same number of pixel units (exposure area 168) as the number of pixels used in the DMD 50.
- the pattern forming material 150 is moved at a constant speed together with the stage 152, the pattern forming material 150 is sub-scanned in a direction opposite to the stage moving direction by the scanner 162, and a strip-shaped exposure is performed for each exposure head 166. Region 170 is formed.
- the DMD 50 has 768 micromirror arrays in which 1024 micromirrors are arranged in the main scanning direction.
- the controller 302 controls so that only a part of the micromirror rows (for example, 1024 ⁇ 256 rows) is driven.
- the micromirror array arranged at the end of DMD50 may be used as shown in FIG. 4B. May be used.
- the micromirror array used may be appropriately changed depending on the situation, such as using a micromirror array in which no defect has occurred.
- the data processing speed of DMD50 is limited, and the modulation speed per line is determined in proportion to the number of pixels to be used. The modulation speed per hit is increased. On the other hand, in the case of an exposure method in which the exposure head is continuously moved relative to the exposure surface, it is not necessary to use all the pixels in the sub-scanning direction.
- stage 152 is moved along the guide 158 by the stage driving device 304. Returning to the origin on the uppermost stream side of the gate 160, it is moved again along the guide 158 from the upstream side to the downstream side of the gate 160 at a constant speed.
- the micromirror row force in which 1,024 micromirrors are arranged in the main scanning direction includes the DMD arranged in 768 threads in the subscanning direction.
- the force described in the example of partially driving the micromirror of the DMD has a length in the direction corresponding to the predetermined direction is longer than the length in the direction intersecting the predetermined direction, and each of the control signals Even if a long and narrow DMD in which a number of micromirrors that can change the angle of the reflecting surface are arranged in two dimensions is used, the number of micromirrors that control the angle of the reflecting surface is reduced. Can be fast.
- the exposure method is performed while relatively moving the exposure light and the photosensitive layer.
- the entire surface of the pattern forming material 150 may be exposed by one scan in the X direction by the scanner 162, as shown in FIGS. 6A and 6B.
- the scanner 162 is moved one step in the Y direction, and scanning is performed in the X direction.
- the entire surface of 150 may be exposed.
- the scanner 162 includes 18 exposure heads 166.
- the exposure head has at least the light irradiation means and the light modulation means.
- the exposure is performed on a partial area of the photosensitive layer, whereby the partial area is cured, and an uncured area other than the cured partial area in a development step described later.
- the area is removed and a pattern is formed.
- the pattern forming apparatus including the light modulating means includes a flat plate stage 152 for adsorbing and holding a sheet-like pattern forming material 150 on the surface.
- Two guides 158 extending in the direction are installed.
- the stage 152 is arranged so that the longitudinal direction thereof faces the stage moving direction, and is supported by the guide 158 so as to be reciprocally movable.
- the pattern forming apparatus includes a driving device (not shown) for driving the stage 152 along the guide 158.
- a U-shaped gate 160 is provided at the center of the installation table 156 so as to straddle the movement path of the stage 152. Each end of the U-shaped gate 160 is fixed to both side surfaces of the installation table 156.
- a scanner 162 is provided on one side of the gate 160, and a plurality of (for example, two) detection sensors 164 for detecting the front and rear ends of the pattern forming material 150 are provided on the other side. Yes.
- the scanner 162 and the detection sensor 164 are respectively attached to the gate 160 and fixedly arranged above the moving path of the stage 152.
- the scanner 162 and the detection sensor 164 are connected to a controller (not shown) that controls them.
- the scanner 162 includes a plurality of (for example, 14) exposure heads 166 arranged in a substantially matrix of m rows and n columns (eg, 3 rows and 5 columns). I have. In this example, four exposure heads 166 are arranged in the third row in relation to the width of the pattern forming material 150. When individual exposure heads arranged in the m-th row and the n-th column are shown, they are expressed as an exposure head 166.
- An exposure area 168 by the exposure head 166 has a rectangular shape with the short side in the sub-scanning direction.
- a strip-shaped exposed region 170 is formed in the pattern forming material 150 for each exposure head 166. If the exposure area by each exposure head arranged in the m-th row and the n-th column is shown, the exposure area 168
- each of the exposure heads in each row arranged in a line so that the strip-shaped exposed region 170 is arranged without a gap in the direction perpendicular to the sub-scanning direction is In the arrangement direction, they are shifted by a predetermined interval (a natural number times the long side of the exposure area, twice in this example). Therefore, exposure between the exposure area 168 and the exposure area 168 in the first row is not possible.
- Unexposed areas are exposed using the exposure area 168 in the second row and the exposure area 168 in the third row.
- each of the exposure heads 166 to 166 receives the incident light beam.
- a light modulation means spatial light modulation element that modulates each pixel in accordance with pattern information
- a digital 'micromirror' device (DMD) 50 manufactured by Texas Instruments Inc. is provided.
- the DMD 50 is connected to a later-described controller 302 (see FIG. 12) that includes a data processing unit and a mirror drive control unit.
- the data processing unit of the controller 302 generates a control signal for driving and controlling each micromirror in the region to be controlled by the DMD 50 for each exposure head 166 based on the input pattern information.
- the areas to be controlled will be described later.
- the mirror drive control unit controls the angle of the reflection surface of each micromirror of the DMD 50 for each exposure head 166 based on the control signal generated by the pattern information processing unit. The control of the angle of the reflecting surface will be described later.
- a fiber array light source including a laser emitting portion in which the emitting end portion (light emitting point) of the optical fiber is arranged in a line along the direction corresponding to the long side direction of the exposure area 168 66, a lens system 67 for correcting the laser light emitted from the fiber array light source 66 and collecting it on the DMD, and a mirror 69 for reflecting the laser light transmitted through the lens system 67 toward the DMD 50 are arranged in this order.
- the lens system 67 is schematically shown.
- the lens system 67 has a condensing lens 71 that condenses the laser light B as illumination light emitted from the fiber array light source 66, and an optical path of the light that has passed through the condensing lens 71.
- An inserted rod-shaped optical integrator (hereinafter referred to as a rod integrator) 72, and an imaging lens 74 force arranged in front of the rod integrator 72, that is, on the mirror 69 side, are also configured.
- the condensing lens 71, the rod integrator 72, and the imaging lens 74 cause the laser light emitted from the fiber array light source 66 to enter the DMD 50 as a light beam that is close to parallel light and has a uniform intensity in the beam cross section.
- the shape and action of the rod integrator 72 will be described in detail later.
- the laser beam B emitted from the lens system 67 is reflected by the mirror 69 and irradiated on the DMD 50 via the TIR (total reflection) prism 70.
- the TIR prism 70 is omitted.
- an imaging optical system 51 that images the laser beam B reflected by the DMD 50 onto the pattern forming material 150 is disposed on the light reflecting side of the DMD 50.
- This imaging optical system 51 is Although schematically shown in FIG. 10, as shown in detail in FIG. 11, a first imaging optical system consisting of lens systems 52 and 54, and a second imaging optical system consisting of lens systems 57 and 58, The microlens array 55 and the aperture array 59 inserted between these imaging optical systems are also configured.
- the microlens array 55 is formed by two-dimensionally arranging a number of microlenses 55a corresponding to each picture element of the DMD 50.
- the microlens 55a is arranged by 1024 x 256 rows.
- the arrangement pitch of microlenses 55a is 41 ⁇ m in both the vertical and horizontal directions.
- the micro lens 55a has a focal length of 0.19 mm, an NA (numerical aperture) of 0.11, and is formed of the optical glass BK7.
- the shape of the microlens 55a will be described in detail later.
- the beam diameter of the laser beam B at the position of each microlens 55a is 41 ⁇ m.
- the aperture array 59 is formed by forming a large number of apertures (openings) 59a corresponding to the respective microlenses 55a of the microlens array 55.
- the diameter of the aperture 59a is, for example, 10 m.
- the first imaging optical system forms an image on the microlens array 55 by magnifying the image by the DMD 50 three times. Then, the second imaging optical system forms an image on the pattern forming material 150 and projects it by enlarging the image that has passed through the microlens array 55 by 1.6 times. Therefore, as a whole, the image formed by the DMD 50 is magnified by 4.8 times and is formed and projected on the pattern forming material 150.
- a prism pair 73 is disposed between the second imaging optical system and the pattern forming material 150. By moving the prism pair 73 in the vertical direction in FIG. You can adjust the focus of the image above. In the figure, the pattern forming material 150 is sub-scan fed in the direction of arrow F.
- the pixel part can be appropriately selected according to the purpose without particular limitation as long as the light from the light irradiation means can be received and emitted, but for example, the pattern of the present invention can be selected. If the pattern formed by the forming method is an image pattern, it is a pixel. Thus, when the light modulation means includes DMD, it is a micromirror.
- the number of picture element portions (n mentioned above) of the light modulation element can be appropriately selected according to the purpose without particular limitation.
- the arrangement of the picture element portions in the light modulation element can be appropriately selected according to the purpose for which there is no particular limitation.
- a two-dimensional arrangement is preferably arranged in a lattice shape. More preferred to be.
- the light irradiation means can be appropriately selected according to the purpose without any particular limitation.
- the light emitted from the light irradiation means is, for example, an electromagnetic wave that passes through the support and activates the photopolymerization initiator and sensitizer used when the light is irradiated through the support.
- electromagnetic wave that passes through the support and activates the photopolymerization initiator and sensitizer used when the light is irradiated through the support.
- ultraviolet to visible light, electron beams, X-rays, laser light, etc. are mentioned, and among these, laser light is preferred.
- Laser that combines two or more lights hereinafter sometimes referred to as “combined laser”) ) Is more preferable. Even when the support is peeled off and the light is irradiated with light, the same light can be used.
- the ultraviolet force is preferably 300 to 1500 nm, more preferably 320 to 800 mn, and 330 ⁇ ! ⁇ 650mn force ⁇ especially preferred!
- the wavelength of the laser beam is, for example, preferably 200 to 1500 nm force S, more preferably 300 to 800 nm force S, and 330 mm! ⁇ 500mn force is more preferred, 400 ⁇ 41011111 ⁇ 1, especially preferred.
- laser light having a wavelength of 405 nm emitted from a GaN semiconductor laser is most preferable.
- a means capable of irradiating the combined laser for example, a plurality of lasers, a multimode optical fiber, and a laser beam irradiated with each of the plurality of laser forces are condensed and coupled to the multimode optical fiber.
- a means having a collective optical system for example, a plurality of lasers, a multimode optical fiber, and a laser beam irradiated with each of the plurality of laser forces are condensed and coupled to the multimode optical fiber.
- a means having a collective optical system for example, a plurality of lasers, a multimode optical fiber, and a laser beam irradiated with each of the plurality of laser forces are condensed and coupled to the multimode optical fiber.
- the fiber array light source 66 includes a plurality of (for example, 14) laser modules 64, and one end of the multimode optical fiber 30 is coupled to each laser module 64. ing.
- the other end of the multimode optical fiber 30 is coupled with an optical fiber 31 having the same core diameter as the multimode optical fiber 30 and a cladding diameter smaller than the multimode optical fiber 30.
- the end of the multimode optical fiber 31 opposite to the optical fiber 30 is aligned along the main scanning direction orthogonal to the sub-scanning direction, and arranged in two rows.
- the laser emitting unit 68 is configured.
- the laser emitting portion 68 constituted by the end portions of the multimode optical fiber 31 is sandwiched and fixed between two support plates 65 having a flat surface. Further, it is desirable that a transparent protective plate such as glass is disposed on the light emitting end face of the multimode optical fiber 31 for protection.
- the light exit end face of the multimode optical fiber 31 is easy to collect dust and easily deteriorate due to its high light density, but the protective plate as described above prevents the dust from adhering to the end face and prevents deterioration. Can be delayed.
- the multimode between two adjacent multimode optical fibers 30 with a large cladding diameter is used.
- the optical fiber 30 is stacked, and the output end of the optical fiber 31 coupled to the stacked multimode optical fiber 30 is connected to the two multimode optical fibers 30 adjacent to each other at the portion where the cladding diameter is large. They are arranged so as to be sandwiched between the two exit ends.
- such an optical fiber has a light with a small cladding diameter of 1 to 30 cm in length at the tip of the multimode optical fiber 30 with a large cladding diameter on the laser light emission side. It can be obtained by coupling the fibers 31 coaxially. The two optical fibers are fused and bonded to the incident end face force of the optical fiber 31 and the outgoing end face of the multimode optical fiber 30 so that the central axes of both optical fibers coincide. As described above, the diameter of the core 31a of the optical fiber 31 is the same as the diameter of the core 30a of the multimode optical fiber 30.
- a short optical fiber obtained by fusing an optical fiber having a short length and a large clad diameter to which the clad diameter and the optical fiber are fused is connected to a multimode optical fiber via a ferrule or an optical connector. It may be coupled to the exit end of the bar 30.
- the tip portion can be easily replaced when the diameter of the clad or the optical fiber is broken, and the cost required for exposure head maintenance can be reduced.
- the optical fiber 31 may be referred to as an emission end portion of the multimode optical fiber 30.
- the multimode optical fiber 30 and the optical fiber 31 may be any of a step index type optical fiber, a graded index type optical fiber, and a composite type optical fiber.
- a step index type optical fiber manufactured by Mitsubishi Cable Industries, Ltd. can be used.
- the cladding thickness ⁇ (cladding diameter, one core diameter) Z2 ⁇ is set to the 800 nm wavelength band. About 1Z2 when propagating infrared light, 1.
- the cladding diameter can be reduced to 60 m.
- the cladding diameter of the optical fiber 31 is not limited to 60 ⁇ m.
- Conventional fiber array The optical fiber used in the light source has a cladding diameter of 125 m.
- m is preferably 40 m or less.
- the cladding diameter of the optical fiber 31 is preferably 10 ⁇ m or more.
- the laser module 64 is configured by a combined laser light source (fiber array light source) shown in FIG.
- This combined laser light source is composed of a plurality of (for example, 7) chip-shaped lateral multimode or single mode GaN-based semiconductor lasers LD1, LD2, LD3, LD4, LD5, LD6 arranged and fixed on the heat block 10.
- the number of semiconductor lasers is not limited to seven.
- the GaN semiconductor lasers LD1 to LD7 all have the same oscillation wavelength (for example, 405 nm), and all the maximum outputs are also common (for example, 100 mW for the multimode laser and 30 mW for the single mode laser).
- As the GaN-based semiconductor lasers LD1 to LD7 lasers having an oscillation wavelength other than the above-described 405 nm in a wavelength range of 350 nm to 450 nm may be used.
- the combined laser light source is housed in a box-shaped package 40 having an upper opening together with other optical elements.
- the package 40 is provided with a package lid 41 created so as to close the opening thereof. After the degassing process, a sealing gas is introduced, and the opening of the knock 40 is closed by the package lid 41, whereby the package 40 and the package 40 are packaged.
- the combined laser light source is hermetically sealed in a closed space (sealed space) formed by the cage lid 41.
- a base plate 42 is fixed to the bottom surface of the package 40.
- the heat block 10 On the top surface of the base plate 42, the heat block 10, the condensing lens holder 45 that holds the condensing lens 20, and the multimode light.
- a fiber holder 46 that holds the incident end of the fiber 30 is attached. The exit end of the multimode optical fiber 30 is drawn out of the package through an opening formed in the wall surface of the knock 40.
- a collimator lens holder 44 is attached to the side surface of the heat block 10, and the collimator lenses 11 to 17 are held.
- An opening is formed in the lateral wall surface of the package 40, and wiring 47 for supplying a driving current to the GaN-based semiconductor lasers LD1 to LD7 is drawn out of the package through the opening.
- FIG. 32 shows the front shape of the attachment part of the collimator lenses 11-17.
- Each of the collimator lenses 11 to 17 is formed in a shape obtained by cutting an area including the optical axis of a circular lens having an aspherical surface into an elongated shape with a parallel plane.
- This elongated collimator lens can be formed, for example, by molding a resin or optical glass.
- the collimator lenses 11 to 17 are closely arranged in the arrangement direction of the light emitting points so that the length direction is orthogonal to the arrangement direction of the light emitting points of the GaN-based semiconductor lasers LD1 to LD 7 (left and right direction in FIG. 32). Yes.
- the GaN-based semiconductor lasers LD1 to LD7 have an active layer with an emission width of 2 m, and the divergence angles in the direction parallel to and perpendicular to the active layer are, for example, 10 ° and 30 °, respectively. Lasers that emit laser beams B1 to B7 are used. These GaN-based semiconductor lasers LD1 to LD7 are arranged so that the light emitting points are arranged in a line in a direction parallel to the active layer.
- each collimator lens 11-17 has a width of 1. lmm and a length of 4.6 mm, and laser beams B1 to B: enter beam diameters of B7 in the horizontal and vertical directions of 0.9 mm, 2. 6mm.
- the condensing lens 20 is obtained by cutting an area including the optical axis of a circular lens having an aspherical surface into a thin plane in a parallel plane and perpendicular to the arrangement direction of the collimator lenses 11 to 17, that is, in the horizontal direction. It is formed in a shape that is short in the direction.
- the condensing lens 20 is also formed, for example, by molding a resin or optical glass.
- the light emitting means for illuminating the DMD uses a high-intensity fiber array light source in which the output ends of the optical fibers of the combined laser light source are arranged in an array, a high output and deep focus A pattern forming apparatus having a depth can be realized.
- each fiber By increasing the output of the ray light source, the number of fiber array light sources required to obtain a desired output is reduced, and the cost of the pattern forming apparatus can be reduced.
- the cladding diameter of the output end of the optical fiber is made smaller than the cladding diameter of the incident end, the diameter of the light emitting section is further reduced, and the brightness of the fiber array light source can be increased.
- a pattern forming apparatus having a deeper depth of focus can be realized. For example, even in the case of ultra-high resolution exposure with a beam diameter of 1 ⁇ m or less and a resolution of 0.1 ⁇ m or less, a deep focal depth can be obtained, and high-speed and high-definition exposure is possible. Therefore, it is suitable for a thin film transistor (TFT) exposure process that requires high resolution.
- TFT thin film transistor
- the light irradiation means is not limited to a fiber array light source including a plurality of the combined laser light sources.
- laser light incident from a single semiconductor laser having one light emitting point is used.
- a fiber array light source in which a fiber light source including one optical fiber emitting light is arrayed can be used.
- the light irradiation means having a plurality of light emitting points for example, as shown in FIG. 33, a plurality of (for example, seven) chip-shaped semiconductor lasers LD1 to LD7 on a heat block 100: LD7 Can be used.
- a chip-shaped multi-cavity laser 110 shown in FIG. 34A in which a plurality of (for example, five) light emitting points 110a are arranged in a predetermined direction is known.
- the light emitting points can be arranged with higher positional accuracy than in the case where the chip-shaped semiconductor lasers are arranged, so that the laser beams emitted from the respective light emitting point forces can be easily combined.
- the number of light emitting points increases, it becomes easy for the multi-cavity laser 110 to stagnate during laser manufacturing, so the number of light emitting points 110a is preferably 5 or less.
- a plurality of multi-cavity lasers 110 are arranged on the heat block 100 as shown in FIG. 34B.
- a multi-cavity laser array arranged in the same direction can be used as a laser light source.
- the combined laser light source is not limited to one that combines laser beams emitted from a plurality of chip-shaped semiconductor lasers.
- a combined laser including a chip-shaped multi-cavity laser 110 having a plurality of (for example, three) emission points 110a.
- a light source can be used.
- the combined laser light source includes a multi-cavity laser 110, a single multimode optical fiber 130, and a condenser lens 120.
- the multi-cavity laser 110 can be composed of, for example, a GaN-based laser diode having an oscillation wavelength of 405 nm.
- each of the laser beams B also emitted from each of the plurality of light emitting points 110a of the multi-cavity laser 110 is collected by the condenser lens 120 and is applied to the core 130a of the multimode optical fiber 130. Incident.
- the laser light incident on the core 130a propagates in the optical fiber, is combined into one, and is emitted.
- a plurality of light emitting points 110a of the multi-cavity laser 110 are juxtaposed within a width substantially equal to the core diameter of the multi-mode optical fiber 130, and as the condenser lens 120, the multi-mode optical fiber 130
- the convex lens with a focal length approximately equal to the core diameter and a rod lens that collimates the outgoing beam from the multi-cavity laser 110 only in a plane perpendicular to its active layer, the multimode of the laser beam B
- the coupling efficiency to the optical fiber 130 can be increased.
- a plurality of (for example, nine) multi-carriers are provided on the heat block 111 using a multi-cavity laser 110 having a plurality of (for example, three) emission points.
- a combined laser light source having a laser array 140 in which the bit lasers 110 are arranged at equal intervals can be used.
- the plurality of multi-cavity lasers 110 are arranged and fixed in the same direction as the arrangement direction of the light emitting points 110a of each chip.
- This combined laser light source is arranged between the laser array 140, the plurality of lens arrays 114 arranged corresponding to each multi-cavity laser 110, and the laser array 140 and the plurality of lens arrays 114. Further, it is configured to include one rod lens 113, one multimode optical fiber 130, and a condensing lens 120.
- the lens array 114 includes a plurality of microlenses corresponding to the emission points of the multi-cavity laser 110.
- each of the laser beams B also emitted from each of the plurality of light emitting points 10a of the plurality of multi-cavity lasers 110 is condensed in a predetermined direction by the rod lens 113, and then the lens array 114 The light is collimated by each microlens.
- the collimated laser beam L is condensed by the condenser lens 120 and the core of the multimode optical fiber 130. Incident on 130a.
- the laser light incident on the core 130a propagates in the optical fiber, is combined into one, and is emitted.
- this combined laser light source has a heat block 182 having an L-shaped cross section in the optical axis direction mounted on a substantially rectangular heat block 180, and is stored between two heat blocks. A space is formed.
- a plurality of (for example, two) multi-cavity lasers in which a plurality of light-emitting points (for example, five) are arranged in an array form 110 power light-emitting points for each chip 110a It is fixed and arranged at equal intervals in the same direction as the direction of arrangement.
- the substantially rectangular heat block 180 has a recess, and a plurality of light emitting points (for example, five) are arranged on the space side upper surface of the heat block 180 (for example, five).
- the two multi-cavity lasers 110 are arranged so that their emission points are located on the same vertical plane as the emission points of the laser chips arranged on the upper surface of the heat block 182.
- a collimating lens array 184 in which collimating lenses are arranged corresponding to the light emitting points 110a of the respective chips is arranged.
- the collimating lens array 184 the length direction of each collimating lens and the divergence angle of the laser beam are large and the direction (fast axis direction) coincides, and the width direction of each collimating lens is small and the direction (slow axis) Direction).
- the collimating lens array 184 there is a single multimode optical fiber 130 and a condensing unit that condenses the laser beam at the incident end of the multimode optical fiber 130.
- An optical lens 120 is disposed.
- each of the laser beams B emitted from each of the plurality of light emitting points 110a of the plurality of multi-cavity lasers 110 arranged on the laser blocks 180 and 182 is collimated by the collimating lens array 184.
- the light is condensed by the condensing lens 120 and is incident on the core 130a of the multimode optical fiber 130.
- the laser light incident on the core 130a propagates in the optical fiber, and is combined into one and emitted.
- the combined laser light source includes a multi-stage arrangement of multi-cavity lasers and a collimator. High power output can be achieved by using an array of friends.
- a higher-intensity fiber array light source or bundle fiber light source can be formed, which is particularly suitable as a fiber light source constituting the laser light source of the pattern forming apparatus of the present invention.
- a laser module in which each of the combined laser light sources is housed in a casing and the emission end portion of the multimode optical fiber 130 is pulled out from the casing can be configured.
- another optical fiber having the same core diameter as the multimode optical fiber and a cladding diameter smaller than the multimode optical fiber is coupled to the output end of the multimode optical fiber of the combined laser light source.
- the example of increasing the brightness of the light source has been explained.
- a multimode optical fiber with a cladding diameter of 125 m, 80 m, 60 ⁇ m, etc. can be used without connecting another optical fiber to the output end. Also good.
- Laser beams Bl, B2, B3, B4, B5 emitted from each of the GaN-based semiconductor lasers LD1 to LD7 constituting the combined laser light source of the fiber array light source 66 at each exposure head 166 of the scanner 162 , B6, and B7 are collimated by corresponding collimator lenses 11-17.
- the collimated laser beams B1 to B7 are condensed by the condensing lens 20 and converge on the incident end face of the core 30a of the multimode optical fiber 30.
- the collimating lenses 11 to 17 and the condensing lens 20 constitute a condensing optical system
- the condensing optical system and the multimode optical fiber 30 constitute a multiplexing optical system. That is, the laser beam B1 to B7 force condensed as described above by the condensing lens 20 is incident on the core 30a of the multimode optical fiber 30 and propagates through the optical fiber to be combined with one laser beam B. The light is emitted from the optical fiber 31 coupled to the output end of the multimode optical fiber 30.
- each laser module when the coupling efficiency of the laser beam B1 ⁇ : B7 to the multimode optical fiber 30 is 0.85 and each output of the GaN-based semiconductor lasers LD1 ⁇ LD7 is 30mW, it is arranged in an array.
- the laser emission section 68 of the fiber array light source 66 light emission points with high luminance are arranged in a line along the main scanning direction as described above.
- a conventional fiber light source that couples laser light from a single semiconductor laser to a single optical fiber has low output, so if the multiple rows are not arranged, the desired force cannot be obtained. Since the wave laser light source has high output, a desired output can be obtained even with a small number of columns, for example, one column.
- a laser with an output of about 30 mW (milliwatt) is usually used as a semiconductor laser, and a core diameter is used as an optical fiber.
- Multimode optical fiber with 50 m, clad diameter 125 m, NA (numerical aperture) 0.2 is used, so if you want to obtain an output of about 1 W (watt), 48 multimode optical fibers ( 8 X 6)
- the luminous area is 0.62 mm 2 (0.675 mm X O. 925 mm)
- the brightness at the laser emitting section 68 is 1.6 X 10 6 (W / m 2)
- brightness per optical fiber is 3.2 X 10 6 (WZm 2 ).
- the light irradiating means is a means capable of irradiating a combined laser
- an output of about 1 W can be obtained with six multimode optical finos, and the laser emitting section 68 emits light. Since the area of the optical region is 0.0081 mm 2 (0.325 mm X 0.025 mm), the brightness at the laser emission section 68 is 123 X 10 6 (WZm 2 ), which is about 80 times higher than the conventional brightness. Can be achieved.
- the luminance per optical fiber is 90 X 10 6 (WZm 2 ), which is about 28 times higher than before.
- the diameter of the light emission area of the bundled fiber light source of the conventional exposure head is 0.675 mm, and the diameter of the light emission area of the fiber array light source of the exposure head is 0.025 mm.
- the light emitting means (bundle fiber light source) 1 has a large light emitting area, so the angle of the light beam incident on the DMD 3 increases, and as a result, the light beam enters the scanning surface 5 The angle of the light beam increases. For this reason, the beam diameter with respect to the condensing direction (shift in the focus direction) Is easy to get fat.
- the diameter of the light emitting region of the fiber array light source 66 in the sub-scanning direction is reduced.
- the angle of the light beam incident on the scanning surface 56 is decreased. That is, the depth of focus becomes deep.
- the diameter of the light emitting region in the sub-scanning direction is about 30 times that of the conventional one, and a depth of focus corresponding to the diffraction limit can be obtained. Therefore, it is suitable for exposure of a minute spot.
- the effect on the depth of focus becomes more significant and effective as the required light quantity of the exposure head increases.
- the size of one pixel projected on the exposure surface is 10 m x 10 m.
- the DMD is a reflective spatial light modulator, but FIGS. 37A and 37B are developed views for explaining the optical relationship.
- Pattern information power corresponding to the exposure pattern is input to a controller (not shown) connected to the DMD 50 and stored in a frame memory in the controller.
- This pattern information is data that represents the density of each pixel constituting the image as binary values (whether or not dots are recorded).
- the stage 152 having the pattern forming material 150 adsorbed on its surface is moved at a constant speed from the upstream side to the downstream side of the gate 160 along the guide 158 by a driving device (not shown).
- a driving device not shown
- the pattern information stored in the frame memory is sequentially read for each of a plurality of lines.
- a control signal is generated for each exposure head 166 based on the pattern information read out and read out by the data processing unit.
- each of the micromirrors of the DMD 50 is controlled on and off for each exposure head 166 based on the generated control signal by the mirror drive control unit.
- the DMD50 When the DMD50 is irradiated with laser light from the fiber array light source 66, the laser light reflected when the microphone mouth mirror of the DMD50 is turned on is exposed to the exposed surface of the pattern forming material 150 by the lens systems 54 and 58. Imaged on 56. In this way, the laser light emitted from the fiber array light source 66 is turned on and off for each pixel, and the no-turn forming material 150 is exposed in approximately the same number of pixel units (exposure area 168) as the number of pixels used in DM D50.
- the pattern forming material 150 is moved at a constant speed together with the stage 152, the pattern forming material 150 is sub-scanned in the direction opposite to the stage moving direction by the scanner 162, and a strip-shaped exposed area 170 is formed for each exposure head 166. It is formed.
- the exposure is preferably performed using the modulated light through a microlens array, and may be performed through an aperture array, an imaging optical system, or the like.
- microlens array a force that can be appropriately selected according to the purpose without any particular limitation.
- a microlens having an aspherical surface capable of correcting aberration due to distortion of the exit surface in the pixel part Preferred are those arranged.
- the aspherical surface can be appropriately selected according to the purpose for which there is no particular limitation.
- a toric surface is preferable.
- FIG. 13A shows DMD50, light irradiation means 144 for irradiating DMD50 with laser light, and a lens system (imaging optical system) 454, 458, DM D50 for enlarging and imaging the laser light reflected by DMD50.
- a microlens array 472 in which a large number of microlenses 474 are arranged corresponding to each pixel part, an aperture array 476 in which a large number of apertures 478 are provided corresponding to each microlens of the microlens array 472, and an aperture
- FIG. 14 shows the result of measuring the flatness of the reflection surface of the micromirror 62 constituting the DMD 50.
- the same height positions of the reflecting surfaces are shown connected by contour lines, and the pitch of the contour lines is 5 nm.
- the X direction and the y direction shown in the figure are two diagonal directions of the micromirror 62, and the micromirror 62 rotates around the rotation axis extending in the y direction as described above.
- 15A and 15B show the height position displacement of the reflection surface of the micromirror 62 along the X direction and the y direction, respectively.
- the microlens 55a of the microlens array 55 has a special shape different from the conventional one. This will be described in detail below.
- FIGS. 16A and 16B respectively show the front and side shapes of the entire microlens array 55 in detail. These figures also show the dimensions of each part of the microlens array 55, and their units are mm.
- the 1024 ⁇ 256 micromirrors 62 of the DMD 50 are driven. It consists of 1024 microlenses 55a aligned in the vertical direction and 256 vertical rows.
- the arrangement order of the microlens array 55 is indicated by j in the horizontal direction and k in the vertical direction.
- FIGS. 17A and 17B show the front and side shapes of one microphone opening lens 55a in the microlens array 55, respectively.
- FIG. 17A also shows the contour lines of the micro lens 55a.
- the end surface of each microlens 55a on the light emission side has an aspherical shape that corrects aberration due to distortion of the reflection surface of the micromirror 62.
- the condensing state of the laser beam B in the cross section parallel to the X direction and the y direction is roughly as shown in FIGS. 18A and 18B, respectively.
- the radius of curvature of the microlens 55a is smaller and the focal length is shorter in the latter cross section. ing.
- X is the lens optical axis in the X direction. This means the distance of O force
- Y means the distance of the lens optical axis O force in the y direction.
- the microlens 55a is parallel to the focal length force direction in the cross section parallel to the y direction.
- a toric lens that is smaller than the focal length in a simple cross section, distortion of the beam shape near the condensing position is suppressed. If so, the pattern forming material 150 can be exposed to a more precise image without distortion.
- the present embodiment shown in FIG. 19A to FIG. 19D shows that the region with a smaller beam diameter is wider, that is, the depth of focus is larger.
- the focal length in the cross section parallel to the X direction is parallel to the y direction. If the microlens is made up of a toric lens that is smaller than the focal length in the cross section, similarly, a higher definition image without distortion can be exposed to the pattern forming material 150.
- the aperture array 59 arranged in the vicinity of the condensing position of the microlens array 55 is arranged so that only light having passed through the corresponding microlens 55a is incident on each aperture 59a. . That is, by providing this aperture array 59, it is possible to prevent light from adjacent microlenses 55a not corresponding to each aperture 59a from entering, and to enhance the extinction ratio.
- the diameter of the aperture 59a of the aperture array 59 installed for the above-mentioned purpose If the degree is reduced, an effect of suppressing the distortion of the beam shape at the condensing position of the microlens 55a can be obtained. However, if this is done, the amount of light blocked by the aperture array 59 will increase and the light utilization efficiency will decrease. On the other hand, when the microlens 55a has an aspherical shape, the light utilization efficiency is kept high because light is not blocked.
- the microlens 55a may have a secondary aspherical shape or a higher order (4th, 6th, aspherical shape). By adopting the higher-order aspherical shape, the beam shape can be further refined.
- the end surface of the microlens 55a on the light exit side is an aspherical surface.
- a microlens array is configured with one of the two light-passing end surfaces being a spherical surface and the other being a cylindrical surface, the same effect as in the above embodiment can be obtained. It can also be obtained.
- the microlens 55a of the microlens array 55 has an aspherical shape that corrects aberration due to distortion of the reflecting surface of the micromirror 62.
- the same effect can be obtained even if each microlens constituting the microlens array has a refractive index distribution that corrects aberration due to distortion of the reflection surface of the micromirror 62 instead of adopting the spherical shape. .
- FIGs. 22A and 22B An example of such a microlens 155a is shown in Figs. 22A and 22B.
- 22A and 22B show the front shape and the side shape of the microlens 155a, respectively.
- the outer shape of the microlens 155a is a parallel plate. The x and y directions in the figure are as described above.
- FIGS. 23A and 23B schematically show the condensing state of the laser light B in the cross section parallel to the x direction and the y direction by the micro lens 155a.
- the microlens 155a has a refractive index distribution in which the optical axis O force gradually increases outward, and the broken line shown in the microlens 155a in FIG. The positions changed at equal pitches are shown.
- the ratio of the refractive index change of the microlens 155a is larger in the latter cross section, and the focal length is larger. It is getting shorter.
- Such refraction Even when a microlens array composed of a rate distribution type lens is used, it is possible to obtain the same effect as when the microlens array 55 is used.
- the refractive index distribution as described above is also given, and the surface shape and the refractive index distribution are given. It is possible to correct the aberration caused by the distortion of the reflection surface of the micromirror 62 by both of the above.
- the aberration due to the distortion of the reflection surface of the micromirror 62 constituting the DMD 50 is corrected.
- the pattern forming method of the present invention using a spatial light modulation element other than the DMD.
- the present invention can be applied to correct the aberration due to the distortion and prevent the beam shape from being distorted.
- the cross-sectional area of the beam line reflected in the ON direction by the DMD 50 is several times (for example, twice) by the lens systems 454 and 458. Enlarged.
- the expanded laser light is condensed by each microlens of the microlens array 472 so as to correspond to each pixel part of the DMD 50, and passes through the corresponding aperture of the aperture array 476.
- the laser beam that has passed through the aperture is imaged on the exposed surface 56 by the lens systems 480 and 482.
- the laser beam reflected by the DMD 50 is magnified several times by the magnifying lenses 454 and 458 and projected onto the exposed surface 56, so that the entire image area is widened. .
- the microlens array 472 and the aperture array 476 are not arranged, as shown in FIG. 13B, one pixel size (spot size) of each beam spot BS projected onto the exposed surface 56 is the exposure area.
- MTF Modulation Transfer Function
- the laser light reflected by the DMD 50 corresponds to each pixel part of the DMD 50 by each micro lens of the micro lens array 472. Focused. As a result, as shown in FIG. Even when the optical area is enlarged, the spot size of each beam spot BS can be reduced to a desired size (for example, lO ⁇ mX lO ⁇ m), preventing deterioration of MTF characteristics and high-definition exposure. It can be performed.
- the exposure area 468 is tilted because the DMD 50 is tilted in order to eliminate gaps between pixels.
- the aperture array can shape the beam so that the spot size on the exposed surface 56 is constant. At the same time, by passing through an aperture array provided corresponding to each pixel, crosstalk between adjacent pixels can be prevented.
- the angle of the light beam incident on each microlens of the microlens array 472 from the lens 458 becomes small. It is possible to prevent a part of the light beam from entering. That is, a high extinction ratio can be realized.
- the pattern forming method of the present invention may be used in combination with other optical systems appropriately selected from known optical systems, for example, a light quantity distribution correcting optical system composed of a pair of combination lenses.
- the light quantity distribution correcting optical system changes the light flux width at each exit position so that the ratio of the light flux width in the peripheral portion to the light flux width in the central portion close to the optical axis is smaller on the exit side than on the entrance side.
- the light amount distribution on the irradiated surface is corrected so as to be substantially uniform.
- the entire luminous flux width (total luminous flux width) HO and HI is the same for the incident luminous flux and the outgoing luminous flux will be described.
- the portions denoted by reference numerals 51 and 52 virtually represent the entrance surface and the exit surface of the light quantity distribution correcting optical system.
- the light quantity distribution correcting optical system had the same light flux width hO, hi on the incident side
- the light flux width hO is enlarged, and conversely, for the incident light flux on the periphery, the light flux width hi is reduced. That is, the width hlO of the outgoing light beam at the center and the width hl l of the outgoing light beam at the periphery are set to hl KhlO.
- the central luminous flux which normally has a large light quantity distribution, can be utilized in the peripheral part where the light quantity is insufficient, and the light utilization as a whole is improved.
- the light amount distribution on the irradiated surface is made substantially uniform without reducing the use efficiency.
- the degree of uniformity is, for example, such that the unevenness in the amount of light within the effective area is within 30%, preferably within 20%.
- Fig. 24B shows the case where the entire light flux width H0 on the incident side is “reduced” to the width H2 before being emitted (H0
- the light quantity distribution correcting optical system has the same light flux width h0, hi on the incident side, and the light flux width hlO in the central portion is larger than that in the peripheral portion on the outgoing side.
- the luminous flux width hl l at the periphery is made smaller than at the center.
- the reduction rate of the luminous flux the reduction rate for the incident light flux in the central portion is made smaller than that in the peripheral portion, and the reduction rate for the incident light flux in the peripheral portion is made larger than that in the central portion.
- FIG. 24C shows a case where the entire light flux width H0 on the incident side is “expanded” to the width H3 and emitted (H0 and H3).
- the light quantity distribution correcting optical system has the same light flux width h0, hi on the incident side, and the light flux width hlO in the central portion is larger than that in the peripheral portion on the outgoing side.
- the luminous flux width hl l at the periphery is made smaller than at the center. Considering the expansion ratio of the luminous flux, the expansion ratio for the incident light flux in the center is larger than that in the peripheral area, and the expansion ratio for the incident light flux in the peripheral area is small compared with the central area.
- the light quantity distribution correcting optical system changes the light beam width at each emission position, and outputs the ratio of the light beam width in the peripheral part to the light beam width in the central part near the optical axis Z1 compared to the incident side. Since the emission side is smaller, the light having the same luminous flux width on the incident side has a larger luminous flux width in the central part than in the peripheral part on the outgoing side, and the luminous flux width in the peripheral part is Smaller than the center. As a result, the light beam in the central part can be utilized to the peripheral part, and a light beam cross-section with a substantially uniform light quantity distribution can be formed without reducing the light use efficiency of the entire optical system.
- lens data is shown in the case where the light amount distribution in the cross section of the emitted light beam is a Gaussian distribution, as in the case where the light irradiation means is a laser array light source.
- the light intensity distribution of the emitted light beam from the optical fino becomes a Gaussian distribution.
- the pattern forming method of the present invention can be applied to such a case. Also applicable to cases where the core diameter is close to the optical axis by reducing the core diameter of the multimode optical fiber and approaching the configuration of the single mode optical fiber, etc. It is.
- Table 1 below shows basic lens data.
- a pair of combination lenses is composed of two rotationally symmetric aspherical lenses.
- the surface on the light incident side of the first lens arranged on the light incident side is the first surface, the light output.
- the shooting side surface is the second surface
- the first surface is aspherical.
- the surface on the light incident side of the second lens disposed on the light emitting side is the third surface and the surface on the light emitting side is the fourth surface
- the fourth surface is aspherical.
- the unit of the surface distance di value is millimeter (mm).
- Refractive index Ni indicates the value of the refractive index with respect to the wavelength of 405 nm of the optical element having the i-th surface.
- Table 2 below shows the aspherical data for the first and fourth surfaces.
- each coefficient is defined as follows.
- ⁇ Length of perpendicular line (mm) drawn from a point on the aspheric surface at a height ⁇ from the optical axis to the tangential plane (plane perpendicular to the optical axis) of the apex of the aspheric surface
- P Distance from optical axis (mm)
- E indicates that the next numerical value is a “power” with a base of 10
- the numerical force expressed by an exponential function with the base of 10 Indicates that the number before E ”is multiplied. For example,“ 1. OE — 02 ”indicates“ 1.0 X 10 _2 ”.
- FIG. 26 shows the light amount distribution of the illumination light obtained by the pair of combination lenses shown in Table 1 and Table 2.
- the horizontal axis indicates coordinates from the optical axis, and the vertical axis indicates the light amount ratio (%).
- Fig. 25 shows the light intensity distribution (Gaussian distribution) of illumination light when correction is applied.
- the light amount distribution correction optical system corrects the light amount distribution, which is substantially uniform as compared with the case where the correction is not performed. As a result, it is possible to perform uniform exposure with uniform laser light without reducing the light utilization efficiency.
- the developing step exposes the photosensitive layer in the pattern forming material in the exposing step, cures the exposed region of the photosensitive layer, and then removes the uncured region to form an image, thereby forming a no-turn. It is a process.
- the development step can be preferably carried out, for example, by a developing means.
- the developing means is not particularly limited as long as it can be developed using a developer, and can be appropriately selected according to the purpose.
- means for spraying the developer, means for applying the developer examples include a means for immersing in the developer. These may be used alone or in combination of two or more.
- the developing unit may include a developing solution replacing unit that replaces the developing solution, a developing solution supply unit that supplies the developing solution, and the like.
- the developer is not particularly limited and may be appropriately selected depending on the purpose. Examples thereof include alkaline solutions, aqueous developers, organic solvents, and the like. Among these, weakly alkaline. An aqueous solution is preferred. Examples of the basic component of the weak alkaline liquid include lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, carbonated lithium, lithium hydrogen carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate. Sodium phosphate, potassium phosphate, sodium pyrophosphate, potassium pyrophosphate, borax and the like.
- the pH of the weakly alkaline aqueous solution is more preferably about 9 to 11 force, preferably about 8 to 12.
- Examples of the weak alkaline aqueous solution include 0.1 to 5% by mass of sodium carbonate aqueous solution or potassium carbonate aqueous solution.
- the temperature of the developer can be appropriately selected according to the developability of the photosensitive layer, and is preferably about 25 ° C. to 40 ° C., for example.
- the developer is a surfactant, an antifoaming agent, an organic base (for example, ethylenediamine, ethanolamine, tetramethylammonium hydroxide, diethylenetriamine, triethylenepentamine, morpholine, triethanolamine, etc.)
- an organic solvent for example, alcohols, ketones, esters, ethers, amides, latatones, etc.
- the developer may be an aqueous developer obtained by mixing water or an alkaline aqueous solution and an organic solvent, or may be an organic solvent alone.
- the etching step can be performed by a method appropriately selected from the known etching methods.
- the etching solution used for the etching process can be appropriately selected according to the purpose without any particular limitation.
- a cupric chloride solution a chloride chloride solution is used.
- examples thereof include a ferric solution, an alkaline etching solution, and a hydrogen peroxide-based etching solution.
- a point strength of etching factor—a ferric salt solution is preferable.
- An etching pattern can be formed on the surface of the substrate by removing the pattern after performing the etching process in the etching step.
- the etching pattern is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include a wiring pattern.
- the plating step can be performed by an appropriately selected method selected from known plating processes.
- Examples of the plating treatment include, for example, copper plating such as copper sulfate plating and copper pyrophosphate plating, solder plating such as high-speed solder plating, plating bath (nickel sulfate-nickel chloride) plating, nickel plating such as nickel sulfamate, and hard plating.
- Examples include gold plating such as gold plating and soft gold plating.
- An etching pattern can be formed on the surface of the substrate by removing the pattern after performing a plating process by the plating process, and further removing unnecessary portions by an etching process or the like as necessary.
- the pattern forming method of the present invention can be suitably used for the production of a printed wiring board, particularly for the production of a printed wiring board having a hole such as a through hole or a via hole, and the production of a color filter.
- a method for manufacturing a printed wiring board and a method for manufacturing a color filter using the no-turn forming method of the present invention will be described.
- the pattern forming material is placed on the substrate for forming a printed wiring board having the hole portion as the substrate, and the photosensitive layer thereof.
- a photosensitive laminate is formed by laminating in a positional relationship on the substrate side, and (2) a desired region is irradiated with light from the opposite side of the photosensitive laminate to the substrate to cure the photosensitive layer.
- the support in the pattern forming material is removed from the photosensitive laminate, and (4) the photosensitive layer in the photosensitive laminate is developed to remove uncured portions in the photosensitive laminate.
- a pattern can be formed.
- the removal of the support in (3) may be performed between (1) and (2) instead of between (2) and (4). Good.
- the printed pattern is used to form the printed circuit board.
- the method for example, a well-known subtraactive method or an additive method (For example, a semi-additive method, a full additive method)) which etches or processes a board
- the subtractive method is preferable in order to form a printed wiring board with industrially advantageous tenting.
- the cured resin remaining on the printed wiring board forming substrate is peeled off.
- the copper thin film portion is further etched after the peeling to produce a desired printed wiring board. can do.
- a multilayer printed wiring board can also be manufactured in the same manner as the printed wiring board manufacturing method.
- a printed wiring board forming substrate having through holes and having a surface covered with a metal plating layer is prepared.
- the printed wiring board forming substrate for example, a copper clad laminated substrate and a substrate in which a copper plating layer is formed on an insulating base such as glass-epoxy, or an interlayer insulating film is laminated on these substrates to form a copper plating layer
- a substrate laminated substrate
- the lamination temperature of the pattern forming material is not particularly limited, for example, room temperature (15 to 30 ° C.) or under heating (30 to 180 ° C.). Among these, under heating (60 to 140 ° C.) C) is preferred.
- the roll pressure of the crimping roll is not particularly limited, for example, 0.1 to lMPa is preferable.
- the crimping speed is preferably 1 to 3 mZ, which is not particularly limited.
- the printed wiring board forming substrate may be preheated or may be laminated under reduced pressure.
- the photosensitive laminate is formed on the printed wiring board forming substrate by the pattern shape.
- the photosensitive material solution for manufacturing the pattern forming material may be directly applied to the surface of the printed wiring board forming substrate and dried. Laminate the photosensitive layer and the support on the substrate.
- the uncured region of the photosensitive layer on the printed wiring board forming substrate is dissolved and removed with an appropriate developer, and the cured layer for forming the wiring pattern and the curing for protecting the metal layer of the through hole are performed.
- a layer pattern is formed to expose the metal layer on the surface of the printed wiring board forming substrate (development process).
- post-heating treatment or post-exposure treatment may be performed to further accelerate the curing reaction of the cured portion.
- the development may be a wet development method as described above or a dry development method.
- etching step the metal layer exposed on the surface of the printed wiring board forming substrate is dissolved and removed with an etching solution (etching step). Since the opening of the through hole is covered with a cured resin composition (tent film), the metal coating of the through hole prevents the etching solution from entering the through hole and corroding the metal plating in the through hole. Will remain in the prescribed shape. Thereby, a wiring pattern is formed on the printed wiring board forming substrate.
- the etching solution is not particularly limited and may be appropriately selected depending on the purpose.
- a cupric chloride solution, ferric chloride is used.
- examples thereof include a solution, an alkaline etching solution, a hydrogen peroxide-based etching solution, and the like, and among these, a salty ferric solution is preferable from the viewpoint of an etching factor.
- the cured layer is removed from the printed wiring board forming substrate with a strong alkaline aqueous solution or the like as a release piece (cured product removing step).
- the base component in the strong alkaline aqueous solution is not particularly limited. And sodium hydroxide and potassium hydroxide.
- the pH of the strong alkaline aqueous solution is, for example, preferably about 13-14, more preferably about 12-14.
- the strong alkaline aqueous solution is not particularly limited, and examples thereof include 1 to 10% by mass of sodium hydroxide aqueous solution or potassium hydroxide aqueous solution.
- the printed wiring board may be a multilayer printed wiring board!
- the pattern forming material may be used in a plating process that involves only the etching process described above.
- the plating method include copper plating such as copper sulfate plating and copper pyrophosphate plating, solder plating such as high-speed solder plating, plating bath (nickel sulfate-nickel chloride) plating, nickel plating such as nickel sulfamate, and hard plating.
- Examples include gold plating such as gold plating and soft gold plating.
- the photosensitive layer of the pattern forming material of the present invention is bonded onto a substrate such as a glass substrate and the support is peeled off from the pattern forming material, the charged support (film) and the human body are uncomfortable. There is a problem that a shock may be received or dust adheres to the charged support body. For this reason, it is preferable to provide a conductive layer on the support or to perform a treatment for imparting conductivity to the support itself. In addition, when the conductive layer is provided on the support opposite to the photosensitive layer, it is preferable to provide a hydrophobic polymer layer in order to improve scratch resistance.
- a material and a pattern forming material having a black photosensitive layer are prepared.
- a red photosensitive layer is laminated on the substrate surface to form a photosensitive laminate, and then exposed and developed imagewise to form red pixels. Form.
- the photosensitive laminate is heated to cure the uncured portion. This is performed in the same manner for the green and blue pixels to form each pixel.
- the photosensitive laminate may be formed by laminating the pattern forming material on the glass substrate, and the photosensitive composition solution for producing the pattern forming material or the like may be added to the glass substrate.
- the photosensitive layer and the support may be laminated on the glass substrate by coating directly on the surface of the substrate and drying. Further, when three types of pixels of red, green, and blue are arranged, any arrangement such as a mosaic type, a triangle type, and a four-pixel arrangement type may be used.
- a pattern forming material having the black photosensitive layer is laminated on the surface on which the pixels are formed, pixels are formed, and back exposure is performed from the back side, and development is performed to form a black matrix.
- the uncured portion can be cured to produce a color filter.
- the pattern forming method of the present invention uses the pattern forming material of the present invention, formation of various patterns, formation of permanent patterns such as wiring patterns, color filters, pillar materials, rib materials, spacers, It can be suitably used for the production of liquid crystal structural members such as partition walls, the production of holograms, micromachines, proofs and the like, and can be particularly suitably used for the formation of high-definition wiring patterns.
- the pattern forming apparatus of the present invention includes the pattern forming material of the present invention, it forms various patterns, forms permanent patterns such as wiring patterns, color filters, pillar materials, rib materials, spacers, It can be suitably used for the production of liquid crystal structural members such as partition walls, the production of holograms, micromachines, proofs, etc., and can be particularly suitably used for the formation of high-definition wiring patterns.
- the pattern forming material in which a photosensitive layer made of the photosensitive composition for solder resist is laminated includes printed wiring boards, color filters, column materials, rib materials, spacers, partition members and other display members, holograms. It can be widely used for forming permanent patterns such as micromachines and proofs, and can be suitably used for the permanent pattern forming method of the present invention.
- the pattern forming material has a uniform film thickness, and therefore, when the permanent pattern is formed, it is more precisely laminated on the substrate.
- the exposure to the photosensitive laminate formed by the forming method of the second aspect is not particularly limited and can be appropriately selected depending on the purpose.
- the photosensitive layer may be exposed by peeling off the support.
- the support and these layers are interposed. After peeling the support, which may be exposed to the photosensitive layer, and after peeling the support, the cushion layer, which may be exposed through the cushion layer and the Pc layer.
- the photosensitive layer may be exposed through the PC layer, and the photosensitive layer may be exposed after the support, cushion layer, and PC layer are peeled off.
- the developing step is a step of exposing the photosensitive layer by the exposing step, curing the exposed region of the photosensitive layer, and then developing by removing the uncured region to form a permanent pattern.
- the removal method of the uncured region can be appropriately selected depending on the purpose without any particular limitation, and examples thereof include a method of removing using a developer.
- the developer may be appropriately selected according to the purpose without any particular restriction.
- an alkali metal or alkaline earth metal hydroxide or carbonate, hydrogen carbonate, ammonia, or the like Preferred examples include -a water and an aqueous solution of quaternary ammonia salt. Of these, an aqueous sodium carbonate solution is particularly preferred.
- the developer includes a surfactant, an antifoaming agent, an organic base (for example, benzylamine, ethylenediamine, ethanolamine, tetramethylammonium hydroxide, diethylenetriamine, triethylenepentamine, morpholine, Triethanolamine, etc.) and organic solvents (for example, alcohols, ketones, esters, ethers, amides, latatones, etc.) may be used in combination to accelerate development.
- the developer may be an aqueous developer obtained by mixing water or an alkaline aqueous solution and an organic solvent, or an organic solvent alone.
- the curing treatment step is a step of performing a curing treatment on the photosensitive layer having a permanent pattern formed after the developing step.
- the curing treatment can be appropriately selected according to the purpose without any particular limitation, and examples thereof include full-surface exposure treatment and full-surface heat treatment.
- Examples of the entire surface exposure processing method include a method of exposing the entire surface of the photosensitive laminate on which the permanent pattern is formed after the developing step. The whole surface exposure promotes the curing of the resin in the photosensitive composition forming the photosensitive layer. The surface of the permanent pattern is cured.
- the apparatus for performing the entire surface exposure can be appropriately selected according to the purpose without any particular limitation.
- a UV exposure machine such as an ultra-high pressure mercury lamp can be preferably used.
- Examples of the entire surface heat treatment method include a method of heating the entire surface of the photosensitive laminate on which the permanent pattern is formed after the development step. By heating the entire surface, the film strength of the surface of the permanent pattern is increased.
- the heating temperature for the entire surface heating is 120 to 250, preferably 120 to 200 ° C.
- the heating temperature is less than 120 ° C, the film strength may not be improved by heat treatment.
- the heating temperature exceeds 250 ° C, the resin in the photosensitive composition is decomposed and the film quality is weak. May become brittle.
- the heating time for the entire surface heating is preferably 10 to 120 minutes, more preferably 15 to 60 minutes.
- the apparatus for performing the entire surface heating can be appropriately selected according to the purpose from known apparatuses that are not particularly limited, and examples thereof include a dry oven, a hot plate, and an IR heater.
- the substrate is a printed wiring board such as a multilayer wiring board
- the permanent pattern of the present invention can be formed on the printed wiring board, and soldering can be performed as follows. .
- the hardened layer which is the permanent pattern is formed by the developing step, and the metal layer is exposed on the surface of the printed wiring board.
- Gold plating is performed on the portion of the metal layer exposed on the surface of the printed wiring board, and then soldering is performed. Then, semiconductors and parts are mounted on the soldered parts.
- the permanent pattern by the hardened layer exhibits a function as a protective film or an insulating film (interlayer insulating film), and prevents external impact and conduction between adjacent electrodes.
- the permanent pattern forming method of the present invention it is preferable to form at least a V deviation between the protective film and the interlayer insulating film.
- the permanent pattern formed by the permanent pattern forming method is the protective film or the interlayer insulating film, it is possible to protect the wiring from external impact and bending force, particularly when the interlayer insulating film is the interlayer insulating film.
- multilayer This is useful for high-density mounting of semiconductors and components on wiring boards and build-up wiring boards.
- the permanent pattern forming method of the present invention can efficiently form a permanent pattern with high definition by suppressing distortion of an image formed on the photosensitive layer. It can be suitably used for the formation of various patterns that require light, and can be particularly suitably used for the formation of high-definition permanent patterns.
- the photosensitive composition solution for dry film resist having the following composition is coated on a polyethylene terephthalate film having a thickness of 20 ⁇ m as the support and dried to form a photosensitive layer having a thickness of 15 m on the support. Then, the pattern forming material for the dry film resist was produced.
- Structural formula (7 5) where m + n represents 10 in the structural formula (75).
- Structural formula (75) is an example of a compound represented by structural formula (38).
- a polyethylene film having a thickness of 20 m was laminated as the protective film.
- the protective film of the pattern forming material for the dry film resist washed and dried as the substrate, (MODEL8B-720-PH, manufactured by Taisei Laminator Co., Ltd.), and the copper-clad laminate, the photosensitive layer, and the polyethylene terephthalate film (support) are laminated in this order.
- a laminate was prepared.
- the pressure bonding conditions were a pressure roll temperature of 105 ° C, a pressure roll pressure of 0.3 MPa, and a laminating speed of 1 mZ.
- the shortest development time, spectral sensitivity, and minimum exposure amount capable of forming a pattern were measured for the produced pattern forming material for dry film resist and the photosensitive laminate for dry film resist.
- Photosensitive laminate strength for dry film resist Polyethylene terephthalate film
- the support is peeled off, and a 1 mass% aqueous sodium carbonate solution at 30 ° C is sprayed at a pressure of 0.15 MPa over the entire surface of the photosensitive layer on the copper clad laminate.
- the time required for the photosensitive layer on the laminate to be dissolved and removed was measured, and this was taken as the shortest development time. As a result, the shortest development time was 7 seconds.
- light of a certain wavelength is irradiated with a light energy amount varying from 0.1 lmjZcm 2 to 1 OOmiZcm 2 at 2 1/2 times intervals, and a part of the photosensitive layer is irradiated. Cured. After standing at room temperature for 10 minutes, the pattern forming material force for dry film resist is peeled off, and the polyethylene terephthalate film (support) is peeled off, and an aqueous solution of sodium carbonate (30 ° C, 1% by mass) is formed on the entire surface of the photosensitive layer.
- the amount of light energy when the thickness of the cured region at wavelengths of 400 nm, 405 nm, and 410 nm was 15 m was defined as the minimum exposure amount capable of forming a pattern.
- the minimum exposure amount S that can form a pattern at 400 nm is 3. Omj / cm 2
- the minimum exposure S that can form a pattern at 405 nm is 3.3 mjZcm 2
- the minimum exposure S that can be patterned at 410nm was 3.65mjZcm 2
- the exposure amount at each wavelength is the minimum energy of the light corresponding to each wavelength obtained by measuring the spectral sensitivity.
- the polyethylene terephthalate film (support) was peeled off from the photosensitive laminate for dry film resist.
- an aqueous solution of sodium carbonate (30 ° C, 1% by mass) as the developer is sprayed at a spray pressure of 0.1 MPa for twice the minimum development time.
- the cured area was removed by dissolution.
- the surface of the copper clad laminate with a cured resin pattern thus obtained was observed with an optical microscope, and the formed line width was measured for the 8 regions exposed by each head. As a result, the width of each line was 19.8-20.
- the range of variation was 0.
- Example 2 In the same manner as in Example 1, except that N-methylataridon in the photosensitive composition solution for dry film resist was replaced with 10-N-butyl-2-chloroataridon in Example 1, the dry film was used. A resist pattern forming material and a photosensitive laminate for dry film resist were produced. The maximum absorption wavelength of 10-N-butyl-2-chloroacridone as the sensitizer was 365 nm.
- Example 3 the shortest development time, the spectral sensitivity, and the minimum exposure amount capable of forming a pattern were measured. Further, the variation in line width was measured in the same manner as in Example 1. The results are shown in Table 3. The shortest development time was 7 seconds.
- Example 1 was the same as Example 1 except that the amount of 2,2-bis (o-black-mouthed) -1,4,4,5,5, monotetraphenolbiimidazole was 0.50 parts by mass. Thus, a pattern forming material for dry film resist and a photosensitive laminate for dry film resist were produced. Further, in the same manner as in Example 1, the shortest development time, the spectral sensitivity, and the minimum exposure amount capable of forming a pattern were measured. Further, the variation in line width was measured in the same manner as in Example 1. Result The results are shown in Table 3. The shortest development time was 7 seconds.
- Example 1 except that 0.1 part by mass of N-methylataridon in the photosensitive composition solution for dry film resist was replaced by 4,4,1bis (jetylamino) benzophenone 0.04 part by mass.
- the maximum absorption wavelength of 4,4, -bis (jetylamino) benzophenone as the sensitizer was 365 nm.
- the shortest development time, the spectral sensitivity, and the minimum exposure amount capable of forming a pattern were measured. Further, the variation in line width was measured in the same manner as in Example 1. The results are shown in Table 3.
- the shortest development time was 7 seconds.
- Example 1 the pattern forming material for dry film resist and the dry film were the same as in Example 1 except that N-methylataridon in the photosensitive composition solution for dry film resist was replaced with coumarin 6.
- a photosensitive laminate for resist was produced.
- the maximum absorption wavelength of coumarin 6 as the sensitizer was 450 nm.
- Example 3 the shortest development time, the spectral sensitivity, and the minimum exposure amount capable of forming a pattern were measured. Further, the variation in line width was measured in the same manner as in Example 1. The results are shown in Table 3. The shortest development time was 7 seconds. The dry film resist pattern forming material of Comparative Example 2 was deteriorated by handling under a yellow light.
- Comparative Example 1 In Comparative Example 1, the same procedure as in Example 1 except that 1,2-bis (o-black mouth), 1, 4, 4, 5, 5, and 1 tetraphenylbiimidazole was changed to 1.00 parts by mass. Thus, a pattern forming material for dry film resist and a photosensitive laminate for dry film resist were produced. Further, in the same manner as in Example 1, the shortest development time, the spectral sensitivity, and the minimum exposure amount capable of forming a pattern were measured. Further, the variation in line width was measured in the same manner as in Example 1. The results are shown in Table 3. The shortest development time was 7 seconds.
- Example 1 400 3.0 3.3 3.65 0.82 1.22 0.4
- Example 2 405 3.0 3.0 3.09 0.97 1.03 0.4
- Example 3 400 12.0 13.2 14.4 0.83 1.22 19. 8 20. 2 0.4
- Comparative Example 1 365 10.0 14.0 17.0 0.59 0.55 18.0 21.0 3.0
- Comparative Example 2 450 18.0 14.0 10.0 1.80 1.80 18.0 21.0 3.0
- Comparative Example 3 365 10.0 14.0 17.0 0.59 0.55 18.0 21.0 3.0
- the pattern forming material for film resist is assumed to have a wavelength range of 400 410 nm because the S / is in the range of 0.6 1.4.
- the pattern forming material for dry film resist of Comparative Example 13 has an S ZS outside the range of 0.6 1.4.
- Example 4 the photosensitive composition for solder resist had the following composition, and kneaded by a kneading mill according to a conventional method to prepare a photosensitive composition solution for solder resist.
- Phthalocyanine Green 0.42 parts by mass The above barium sulfate dispersion is composed of 30 parts by mass of barium sulfate (manufactured by Zhigaku Co., Ltd., 30) and the above PCR-1157H in diethylene glycol monomethyl ether acetate 61.2 mass% solution 34 29 parts by mass and 35.71 parts by mass of methyl ethyl ketone were premixed, and then the motor mill 200-200 (manufactured by Eiger) was used to obtain a peripheral speed of 9 mZs using Zirco Your beads with a diameter of 1. Omm. 3. Prepared by dispersing for 5 hours.
- the obtained photosensitive composition solution for solder resist was applied onto a PET (polyethylene terephthalate) film having a thickness of 20 ⁇ m as the support and dried to form a photosensitive layer having a thickness of 35 m.
- a 12 ⁇ m-thick polypropylene film was laminated as a protective film on the photosensitive layer to produce a solder resist pattern forming material.
- the substrate was prepared by subjecting a surface of a copper-clad laminate (without through holes, copper thickness 12 / zm) on which wiring had been formed, to a chemical polishing treatment.
- a chemical polishing treatment On the copper clad laminate, while peeling the protective film on the solder resist pattern forming material so that the photosensitive layer of the solder resist pattern forming material is in contact with the copper clad laminate, a vacuum laminator
- the copper clad laminate, the photosensitive layer, and the polyethylene terephthalate film (support) were laminated in this order to prepare a photosensitive laminate for solder resist.
- the crimping conditions were a crimping temperature of 90 ° C, a crimping pressure of 0.4 MPa, and a laminating speed of lmZ.
- a laminate was prepared in the same manner as the above-described photosensitive laminate for a solder-resist, except that a copper-clad laminate (without wiring formation) was used as the substrate.
- the laminated body is irradiated with light of a certain wavelength within the range of 350 to 700 nm, changing the amount of light energy from 0.1 lmj / cm 2 to 300 miZcm 2 at intervals of 2 1/2 times.
- a part of the photosensitive layer was cured.
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Abstract
Description
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020137008389A KR20130042049A (ko) | 2004-07-14 | 2005-07-14 | 감광성 조성물, 패턴형성재료, 감광성 적층체, 및 패턴형성장치 및 패턴형성방법 |
| EP05765789A EP1780599A4 (en) | 2004-07-14 | 2005-07-14 | LIGHT-SENSITIVE COMPOSITION, STRUCTURAL PRODUCTION MATERIAL, LIGHT-SENSITIVE LAMINATE, STRUCTURAL PRODUCTION DEVICE AND METHOD OF STRUCTURING PRODUCTION |
| CN2005800309014A CN101052918B (zh) | 2004-07-14 | 2005-07-14 | 感光性组合物、图案形成材料、感光性层叠体以及图案形成装置和图案形成方法 |
| US11/632,163 US20080268374A1 (en) | 2004-07-14 | 2005-07-14 | Photosensitive Composition, Pattern Forming Material, Photosensitive Laminate, Pattern Forming Apparatus, and Pattern Forming Process |
| KR1020077003456A KR101411346B1 (ko) | 2004-07-14 | 2005-07-14 | 감광성 조성물, 패턴형성재료, 감광성 적층체, 및 패턴형성장치 및 패턴형성방법 |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004207888 | 2004-07-14 | ||
| JP2004-207888 | 2004-07-14 | ||
| JP2004324385 | 2004-11-08 | ||
| JP2004-324385 | 2004-11-08 |
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| WO2006006671A1 true WO2006006671A1 (ja) | 2006-01-19 |
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| PCT/JP2005/013048 Ceased WO2006006671A1 (ja) | 2004-07-14 | 2005-07-14 | 感光性組成物、パターン形成材料、感光性積層体、並びにパターン形成装置及びパターン形成方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080268374A1 (ja) |
| EP (1) | EP1780599A4 (ja) |
| JP (1) | JP2011065171A (ja) |
| KR (2) | KR20130042049A (ja) |
| CN (1) | CN101052918B (ja) |
| WO (1) | WO2006006671A1 (ja) |
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| JP2007248843A (ja) * | 2006-03-16 | 2007-09-27 | Fujifilm Corp | 感光性組成物、感光性フィルム、感光性積層体、永久パターン形成方法、及びプリント基板 |
| US20100218984A1 (en) * | 2006-01-25 | 2010-09-02 | Toshio Yamanaka | Photosensitive dry film resist, printed wiring board making use of the same, and process for producing printed wiring board |
| CN102393605A (zh) * | 2006-12-27 | 2012-03-28 | 日立化成工业株式会社 | 感光性树脂组合物、感光性元件、抗蚀图案的形成方法以及印刷电路板的制造方法 |
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| CN102393605B (zh) * | 2006-12-27 | 2014-06-11 | 日立化成株式会社 | 感光性树脂组合物、感光性元件、抗蚀图案的形成方法以及印刷电路板的制造方法 |
| CN102681261A (zh) * | 2011-11-17 | 2012-09-19 | 京东方科技集团股份有限公司 | 基板上隔垫物制造方法 |
| CN102681261B (zh) * | 2011-11-17 | 2014-07-09 | 京东方科技集团股份有限公司 | 基板上隔垫物制造方法 |
| JP2018116146A (ja) * | 2017-01-18 | 2018-07-26 | 旭化成株式会社 | 感光性樹脂組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011065171A (ja) | 2011-03-31 |
| EP1780599A1 (en) | 2007-05-02 |
| CN101052918B (zh) | 2012-09-26 |
| EP1780599A4 (en) | 2010-09-01 |
| KR20130042049A (ko) | 2013-04-25 |
| CN101052918A (zh) | 2007-10-10 |
| KR20070031457A (ko) | 2007-03-19 |
| US20080268374A1 (en) | 2008-10-30 |
| KR101411346B1 (ko) | 2014-06-25 |
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