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WO2017014272A1 - Filtre de correction de couleur et dispositif d'affichage dans lequel celui-ci est utilisé - Google Patents

Filtre de correction de couleur et dispositif d'affichage dans lequel celui-ci est utilisé Download PDF

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Publication number
WO2017014272A1
WO2017014272A1 PCT/JP2016/071421 JP2016071421W WO2017014272A1 WO 2017014272 A1 WO2017014272 A1 WO 2017014272A1 JP 2016071421 W JP2016071421 W JP 2016071421W WO 2017014272 A1 WO2017014272 A1 WO 2017014272A1
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WIPO (PCT)
Prior art keywords
resin
dyes
color correction
correction filter
dye
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PCT/JP2016/071421
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English (en)
Japanese (ja)
Inventor
勝也 長屋
稲葉　潤一郎
大吾 一戸
正子 堀内
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JSR Corp
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JSR Corp
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means

Definitions

  • the present invention relates to a color correction filter applied to a white LED and a display device using the same.
  • LEDs Light Emitting Diodes
  • LEDs Light Emitting Diodes
  • Typical types of white LED light sources include (1) types of three-wavelength white LEDs that combine three LEDs of red, green and blue light emission as white light sources (see, for example, patent document 1), (2) blue Type of dual-wavelength white LED composed of light-emitting LED and yellow phosphor (with two emission peaks), (3) composed of near-ultraviolet or purple-emitting LED, red phosphor, green phosphor and blue phosphor Type of three-wavelength white LED (with three emission peaks), (4) three-wavelength white LED (with three emission peaks) composed of a blue-emitting LED and a red phosphor and a green phosphor There are 4 types of types.
  • the system (1) has a wider color reproduction area than a liquid crystal display device using a fluorescent lamp, but it is not preferable in terms of power consumption and manufacturing cost because three LEDs are used.
  • Patent Document 2 proposes an inexpensive color correction filter that separates green and red by using a pigment to improve color reproducibility, and a liquid crystal display device using the same. Sometimes the color reproducibility can not be satisfied.
  • the present invention is a color correction filter applied to a white LED, which effectively separates blue and green, and green and red, and improves the color reproducibility, and an inexpensive color correction filter It is an object to provide a display device used.
  • a color correction filter applied to a white LED wherein the color correction filter includes a substrate having a resin layer, and the substrate has a dye (A) having an absorption maximum in a wavelength region of 550 nm to 650 nm.
  • a color correction filter comprising: a dye (B) having an absorption maximum in a wavelength range of 420 nm to 520 nm.
  • the dye (B) comprises a semisquarylium dye, cyanine dye, styryl dye, azomethine dye, merocyanine dye, phenazine dye, pyridomethene-boron complex dye, and pyrazine-boron complex dye
  • the color correction filter according to any one of the above items [1] to [4], which is at least one selected from the group consisting of
  • the resin for forming the resin layer is a cyclic (poly) olefin resin, aromatic polyether resin, polyimide resin, fluorene polycarbonate resin, fluorene polyester resin, polycarbonate resin, polyamide resin Polyarylate resins, polysulfone resins, polyether sulfone resins, polyparaphenylene resins, polyamideimide resins, polyethylene naphthalate resins, fluorinated aromatic polymer resins, (modified) acrylic resins, epoxy resins Characterized in that it is at least one resin selected from the group consisting of epoxy resin, allyl ester curable resin, silsesquioxane UV curable resin, acrylic UV curable resin and vinyl UV curable resin. In any one of [1] to [7] Color correction filter.
  • a display device characterized by using the color correction filter according to any one of items [1] to [12].
  • the color correction filter of the present invention can effectively separate blue and green, and green and red when applied to white LEDs, and achieve the excellent color reproducibility required for high performance display applications. be able to.
  • the color correction filter of the present invention includes a substrate having a resin layer, and the substrate has a dye (A) having an absorption maximum in the wavelength range of 550 nm to 650 nm and an absorption maximum in the wavelength range of 420 nm to 520 nm. It contains a dye (B).
  • the color correction filter according to the present invention has an absorption maximum in the wavelength range corresponding to the absorption wavelength of each of the dyes (A) and (B). Preferred.
  • the maximum OD 1 of the optical density (Optical Density) in the wavelength region of 550 nm ⁇ 650 nm is, when greater than the maximum value OD 2 of the optical density in the wavelength range of 420 nm ⁇ 520 nm, excellent color It is preferable because it tends to be compatible with the reproducibility and the luminance when used in display device applications. Specifically, it is further preferable that the OD 1 and the OD 2 satisfy the following requirements (a), (b) and (c).
  • OD 1 is preferably 0.3 or more, more preferably 0.5 or more, still more preferably 1.0 or more, and particularly preferably 1.5 or more. Moreover, OD 1 is preferably 4.0 or less, more preferably 3.5 or less, particularly preferably 3.0 or less.
  • OD 2 is preferably 0.2 or more, more preferably 0.3 or more, further preferably 0.4 or more, particularly preferably 0.5 or more. Moreover, OD 2 is preferably 2.0 or less, more preferably 1.5 or less, particularly preferably 1.0 or less.
  • the lower limit value of OD 2 / OD 1 is preferably 0.05 or more, more preferably 0.10 or more, particularly preferably 0.15 or more, and the upper limit value of OD 2 / OD 1 is preferably 0.9.
  • the following is more preferably 0.8 or less, particularly preferably 0.7 or less.
  • the transmittance in the wavelength region corresponding to green may be more important than the transmittance in the wavelength regions corresponding to other colors, and in particular the luminance This tendency is remarkable in display device applications where it is considered important.
  • the maximum value of the transmittance in the wavelength range of 495 nm to 540 nm is preferably 40% or more, more preferably 45% or more, and particularly preferably 50% or more. When the maximum value of the transmittance is in the above-mentioned range, it is preferable because color reproducibility and excellent luminance can be achieved.
  • the color correction filter of the present invention comprises a substrate having a resin layer.
  • the substrate may be a single layer or a multilayer as long as it has a resin layer, and when the substrate is a single layer, for example, a transparent resin containing a dye (A) and a dye (B)
  • substrates can be mentioned.
  • a transparent resin layer such as an overcoat layer made of a curable resin containing a dye (A) and a dye (B) on a support such as a glass support or a base resin support.
  • substrate top can be mentioned.
  • Transparent resin containing pigment (A) and pigment (B) from the viewpoints of manufacturing cost and easy adjustment of optical characteristics, and further, achieving the scratch elimination effect of the substrate made of a transparent resin and improving the scratch resistance of the substrate
  • the substrate of the present invention may contain a dye (C) having an absorption maximum in the wavelength region of 680 nm or more.
  • the dye (C) may be contained in the same resin layer as the dye (A) or the dye (B) or may be contained in a separate resin layer, but from the viewpoint of manufacturing cost and easiness of optical property adjustment It is particularly preferable to be contained in the same resin layer.
  • the resin for forming the resin layer is preferably a transparent resin, and may be used singly or in combination of two or more.
  • Such a resin is not particularly limited as long as it does not impair the effects of the present invention, but, for example, high temperature vapor deposition performed at a vapor deposition temperature of 100 ° C. or higher to ensure thermal stability and formability to a filter.
  • Tg glass transition temperature
  • the glass transition temperature of the resin is 140 ° C. or higher, a filter can be obtained which can form a dielectric multilayer film by vapor deposition at a higher temperature, which is particularly preferable.
  • the total light transmittance (JIS K 7105) at a thickness of 0.1 mm is preferably 75 to 95%, more preferably 78 to 95%, particularly preferably 80 to 95%. Resin can be used. If the total light transmittance is in such a range, the obtained substrate exhibits good transparency as an optical filter.
  • the resin examples include cyclic (poly) olefin resins, aromatic polyether resins, polyimide resins, fluorene polycarbonate resins, fluorene polyester resins, polycarbonate resins, polyamide resins, polyarylate resins, and polysulfones.
  • the cyclic (poly) olefin based resin wherein the cyclic (poly) olefinic resins, consisting of a monomer represented by the monomers and the following formula represented by the following formula (X 0) (Y 0)
  • R x1 to R x4 each independently represent an atom or a group selected from the following (i) to (viii), and k x , m x and p x are each independently 0 or positive Represents an integer of (I) a hydrogen atom (ii) a halogen atom (iii) a trialkylsilyl group (iv) a substituted or unsubstituted carbon having 1 to 30 carbon atoms having a linking group containing an oxygen atom, a sulfur atom, a nitrogen atom or a silicon atom Hydrogen group (v) substituted or unsubstituted hydrocarbon group having 1 to 30 carbon atoms (vi) polar group (excluding (iv)) (Vii) R x1 and R x2 or R x3 and R x4 represent an alkylidene group formed by bonding to each other, and R x1 to R x4 which are not involved in the bonding are each independently the
  • each of R y1 and R y2 independently represents an atom or a group selected from the above (i) to (vi), or represents the following (ix), and k y and p y are each Independently represent 0 or a positive integer.
  • R y1 and R y2 represent a monocyclic or polycyclic alicyclic hydrocarbon, an aromatic hydrocarbon or a heterocyclic ring formed by bonding to each other.
  • Aromatic Polyether-Based Resin is at least one selected from the group consisting of a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2) It is preferred to have a structural unit.
  • R 1 to R 4 each independently represent a monovalent organic group having 1 to 12 carbon atoms, and a to d each independently represent an integer of 0 to 4.
  • R 1 to R 4 and a to d each independently have the same meaning as R 1 to R 4 and a to d in the above formula (1)
  • Y is a single bond
  • -SO 2- Or> C O
  • R 7 and R 8 each independently represent a halogen atom, a monovalent organic group having 1 to 12 carbon atoms, or a nitro group
  • g and h each independently represent 0 to 4
  • m represents 0 or 1; However, when m is 0, R 7 is not a cyano group.
  • the aromatic polyether resin further has at least one structural unit selected from the group consisting of a structural unit represented by the following formula (3) and a structural unit represented by the following formula (4) preferable.
  • R 5 and R 6 each independently represent a monovalent organic group having 1 to 12 carbon atoms
  • Z is a single bond, -O-, -S-, -SO 2 -,>
  • C O, —CONH—, —COO— or a divalent organic group having 1 to 12 carbon atoms
  • e and f each independently represent an integer of 0 to 4, and n represents 0 or 1.
  • R 7 , R 8 , Y, m, g and h each independently have the same meaning as R 7 , R 8 , Y, m, g and h in formula (2), and R 5 , R 6 , Z, n, e and f each independently have the same meaning as R 5 , R 6 , Z, n, e and f in the formula (3).
  • the polyimide-based resin is not particularly limited as long as it is a high molecular compound containing an imide bond in the repeating unit, for example, in JP-A-2006-199945 or JP-A-2008-163107. It can be synthesized by the method described.
  • the above-mentioned fluorene polycarbonate-based resin is not particularly limited as long as it is a polycarbonate resin containing a fluorene moiety, and for example, it can be synthesized by the method described in Japanese Patent Application Laid-Open No. 2008-163194. it can.
  • the above-mentioned fluorene polyester-based resin is not particularly limited as long as it is a polyester resin containing a fluorene moiety, and is described, for example, in JP-A-2010-285505 and JP-A-2011-197450. Can be synthesized by the following method.
  • fluorinated aromatic polymer-based resin is not particularly limited, it is possible to use an aromatic ring having at least one fluorine, an ether bond, a ketone bond, a sulfone bond, an amide bond, an imide Any polymer may be used as long as it contains a repeating unit containing at least one bond selected from the group consisting of a bond and an ester bond, and it can be synthesized, for example, by the method described in JP-A 2008-181121.
  • Examples of commercially available products of the transparent resin that can be used in the present invention include the following commercially available products.
  • Examples of commercially available cyclic (poly) olefin resins include Arton manufactured by JSR Co., Ltd., Zeonor manufactured by Nippon Zeon Co., Ltd., APEL manufactured by Mitsui Chemicals, Inc., TOPAS manufactured by Polyplastics Co., Ltd., and the like.
  • As a commercial item of polyether sulfone type resin Sumitomo Chemical Co., Ltd. Sumica excel PES etc. can be mentioned.
  • Commercially available polyimide resins include Neoprim L manufactured by Mitsubishi Gas Chemical Co., Ltd.
  • polycarbonate resin Teijin Limited's Pure Ace
  • fluorene polycarbonate resins there may be mentioned UPIZETA EP-5000 manufactured by Mitsubishi Gas Chemical Co., Ltd.
  • fluorene polyester resin OKP4HT manufactured by Osaka Gas Chemical Co., Ltd.
  • acrylic resin the accrediter by Nippon Shokubai Co., Ltd. etc.
  • silsesquioxane-based UV curable resins include Silplus manufactured by Nippon Steel Chemical Co., Ltd., and the like.
  • the dye (A) is not particularly limited as long as it has an absorption maximum in the wavelength range of 550 nm to 650 nm, but is preferably a solvent-soluble compound, and squalilium dyes, cyanine dyes, subphthalocyanine dyes, tetra It is preferably at least one member selected from the group consisting of azaporphyrin dyes, triarylmethane dyes, perylene dyes and porphyrin dyes, and is selected from the group consisting of squarylium dyes, cyanine dyes and tetraazaporphyrin dyes. Particularly preferred is at least one of
  • the wavelength range in which the absorption maximum wavelength of the dye (A) is is preferably 560 to 640 nm, more preferably 565 to 630 nm, and particularly preferably 570 to 620 nm.
  • the dye (A) has an absorption maximum in the above wavelength range, light in the wavelength range corresponding to between green and red can be efficiently cut off, and when used in a color correction filter application, a white LED is used as a backlight. It is preferable because the color reproducibility of the used display device and white LED lighting can be improved.
  • the dye (B) is not particularly limited as long as it has an absorption maximum in the wavelength range of 420 nm to 520 nm, but is preferably a solvent-soluble compound, and semisquarilium dyes, cyanine dyes, styryl dyes, azomethine It is preferable that it is at least one selected from the group consisting of a dye, a merocyanine dye, a phenazine dye, a pyridomethene-boron complex dye and a pyrazine-boron complex dye.
  • the wavelength range in which the absorption maximum wavelength of the dye (B) is present is preferably 430 to 510 nm, more preferably 440 to 505 nm, and particularly preferably 450 to 500 nm.
  • the dye (B) has an absorption maximum in the above wavelength range, light in the wavelength range corresponding to between blue and green can be efficiently cut off, and when used in a color correction filter application, a white LED is used as a backlight. It is preferable because the color reproducibility of the used display device and white LED lighting can be improved.
  • the dye (C) is not particularly limited as long as it has an absorption maximum in a wavelength region of 680 nm or more, but is preferably a solvent-soluble compound, and squalilium dyes, phthalocyanine dyes, cyanine dyes, hexaphyrin dyes It is preferably at least one selected from the group consisting of dyes and croconium dyes.
  • the wavelength range in which the absorption maximum wavelength of the dye (C) is present is preferably 680 to 750 nm, more preferably 685 to 745 nm, and particularly preferably 690 to 740 nm.
  • a wavelength range of 680 nm or more is a wavelength range corresponding to the bottom of red emission of a white LED, and by increasing the absorption in this wavelength range, a display device or a display using the white LED as a backlight when used in color correction filter applications The color reproducibility of the white LED lighting can be improved.
  • Such dyes are described, for example, in JP-A-2012-8532, JP-A-2013-218312, JP-A-2015-040895, WO2013-054864, WO2015-025779, etc. Dyes capable of absorbing near infrared rays can be suitably used.
  • the color correction filter of the present invention may include a gas barrier layer.
  • Dye compounds may lose their absorption intensity by light irradiation (the main cause is that excitation energy is transferred to oxygen molecules and singlet oxygen is generated to cut off ⁇ conjugation in dye molecules).
  • the correction filter includes a gas barrier layer, and in particular, by forming the gas barrier layer at a location closer to the air interface than the dye-containing resin layer, the decrease in absorption strength of the dye tends to be suppressed.
  • the gas barrier layer may be contained as part of the substrate or formed on the surface of the substrate, as long as it is contained in the color correction filter. When it is formed on the surface of the substrate, it may be either one side or both sides of the substrate, but if it is formed on both sides, the gas barrier property and the mechanical characteristics of the color correction filter (the strength is excellent Less from the viewpoint of
  • the material for forming the gas barrier layer is not particularly limited.
  • organic materials such as polyvinyl alcohol and polyvinylidene chloride, organic-inorganic hybrid materials such as sol-gel materials, SiO 2 , SiO x , SiON, SiN x , Al 2 Inorganic materials such as O 3 can be mentioned, and from the viewpoint of gas barrier properties, inorganic materials are particularly preferable.
  • the gas barrier layer may be a single layer or a multilayer, and in the case of a multilayer, mention is made of a configuration such as an inorganic dielectric multilayer film or a multilayer film in which an organic material and an inorganic material are alternately laminated. be able to.
  • the oxygen permeability of the gas barrier layer is preferably low. Specifically, it is preferably not more than 1cc / m 2 / day, more preferably not more than 0.5cc / m 2 / day, more preferably not more than 0.1cc / m 2 / day, It is particularly preferable that it is 0.05 cc / m 2 / day or less. If the oxygen permeability is in the above-mentioned range, the light resistance of the dye can be improved, and a color correction filter more excellent in reliability can be obtained.
  • the method of forming the gas barrier layer is not particularly limited, but in the case of an organic material, a cast method such as spin coating or slit coating or a method of bonding a resin gas barrier film may be mentioned, and in the case of an inorganic material Plasma CVD method, sputtering method, vapor deposition method etc. can be mentioned.
  • the color correction filter of the present invention may include an antireflective layer. Specifically, it is a layer for reducing the reflectance in the so-called visible region of 380 to 780 nm, and by including the anti-reflection layer, the transmittance in the visible region of the color correction filter can be improved.
  • the brightness can be improved when used in
  • the average reflectance of the color correction filter including the antireflective layer in the wavelength region of 380 to 780 nm is preferably 6% or less, more preferably 5% or less, still more preferably 4% or less, particularly preferably 3% or less is there.
  • the reflectance in the above-mentioned wavelength range is in the above-mentioned range, the transmittance loss due to interface reflection can be reduced, so that it is effective in improving the luminance particularly when used in a display device application, which is preferable.
  • the antireflection layer is preferably formed at a position closest to the air interface in the color correction filter.
  • the color correction filter includes both a gas barrier layer and an antireflection layer, for example, as shown in FIG.
  • Antireflection Layer (3)-Gas Barrier Layer (2)-Substrate (1) Containing Dyes (A) and (B) (1)-Gas Barrier Layer (2)-Antireflection Layer (3) can be exemplified.
  • the antireflective layer is formed at a position closest to the air interface in the color correction filter, the antireflective effect in the visible region can be obtained more efficiently.
  • the antireflective layer may be formed on one side or both sides, and if it is formed on one side, the manufacturing cost is excellent, and if it is formed on both sides, a color correction filter capable of achieving higher luminance can be obtained. Can.
  • the antireflection layer may be a single layer or a multilayer, and in the case of a single layer is a layer made of a low refractive index material, and in the case of a multilayer, a dielectric multilayer in which materials having different refractive indices are alternately laminated. A film etc. can be mentioned.
  • a material having a refractive index range of usually 1.2 to 2.5 is selected.
  • examples of such materials include, for example, titanium oxide, zirconium oxide, tantalum pentoxide, niobium pentoxide, lanthanum oxide, yttrium oxide, zinc oxide, zinc sulfide, indium oxide, etc., and titanium oxide, tin oxide and / or Or those containing a small amount of cerium oxide or the like (for example, 0 to 10% with respect to the main component), silica, alumina, lanthanum fluoride, magnesium fluoride, and sodium aluminum hexafluoride.
  • the method of forming the antireflective layer is not particularly limited, but in the case of a single layer, for example, a method of spin coating or slit coating of an organic low refractive index material, a CVD method of an inorganic low refractive index material, a sputtering method Vacuum deposition, ion assisted deposition, or ion plating, and in the case of a multilayer, for example, CVD, sputtering, vacuum deposition, ion assisted deposition, ion plating, etc. According to the method, it is possible to cite a method in which layers having different refractive indexes are alternately stacked.
  • the layers having different refractive indices may be alternately laminated with two or more different materials, or the same material whose refractive index is changed by changing the formation conditions of the layers may be alternately laminated. It is preferable that a layer made of a high refractive index material having a refractive index of 1.7 to 2.5 and a layer made of a low refractive index material having a refractive index of 1.2 to 1.6 be alternately laminated.
  • the antireflective layer is preferably a multilayer film, more preferably 2 to 60 layers, and particularly preferably 4 to 50 layers.
  • the display device of the present invention includes a backlight using a white LED and the above-described color correction filter of the present invention.
  • the color correction filter is not particularly limited in which position in the display device is installed.
  • a configuration in which a plurality of white LEDs (13) provided on the left and right edge portions of the display device are installed (FIG. 2), display A configuration (FIG. 3) installed on the front of a plurality of white LEDs (13) provided directly under the screen section (12) of the device (FIG. 3), a configuration (FIG. 4) installed on the backlight light guide plate (15) 16)
  • a configuration (FIG. 5) installed on top can be mentioned.
  • a generally known liquid crystal panel may be used.
  • a configuration having a liquid crystal layer oriented between an array substrate provided with a polarizing filter and a color filter substrate provided with a polarizing filter can be mentioned.
  • light emitted from the white LED passes through the color correction filter, so that image expression with excellent color reproducibility can be performed.
  • the light emitting device of the present invention comprises a blue LED light source, a white conversion layer, and the color correction filter of the present invention described above.
  • the white conversion layer is not particularly limited as long as it converts blue light emitted from a blue LED light source into white light, and examples thereof include a layer containing a yellow phosphor and a layer containing a green phosphor and a red phosphor. be able to.
  • a white conversion layer is disposed between the blue LED light source and the color correction filter.
  • the color correction filter may be spaced apart from the white conversion layer or may be disposed directly on the white conversion layer. By installing the color correction filter, it is possible to obtain white light in which the blue, green and red color components are separated.
  • the color correction filter of the present invention has absorption in the wavelength range between red and green and in the wavelength range between blue and green to achieve excellent color reproducibility when applied to white LEDs. it can.
  • Specific applications applied to white LEDs include display devices (such as televisions, smartphones, tablet terminals, wearable devices, etc.) using white LEDs as backlights, and white LED illumination.
  • the white LED is not particularly limited, but is preferably a white LED having three emission peaks.
  • the present invention will be more specifically described based on examples, but the present invention is not limited to these examples.
  • the term “parts” means “parts by weight” unless otherwise noted.
  • the measuring method of each physical-property value and the evaluation method of a physical property are as follows.
  • the molecular weight of the resin was measured by the following method (a) or (b) in consideration of the solubility of each resin in the solvent and the like.
  • GPC Gel permeation chromatography
  • Tg Glass transition temperature
  • DSC 6200 differential scanning calorimeter
  • a color correction filter is attached to the front of a commercially available liquid crystal display (LC-19K90, manufactured by Sharp Corp.), and the chromaticity coordinates of each of red, green and blue in the center of the screen of this liquid crystal display are spectral radiance meters
  • the area of the triangle obtained by connecting the chromaticity coordinates was measured relative to each other (model CS-2000, manufactured by Konica Minolta Sensing, Inc.), and the areas of the triangle obtained were relatively compared, assuming that the color correction filter was not installed.
  • this value is larger than 100, it can be considered that the color reproducibility is excellent, and is preferably 105 or more, more preferably 108 or more, and particularly preferably 110 or more.
  • ⁇ Light resistance> In a dark room, install a color correction filter on a stand equipped with a ring-type white LED light source (GR10-N, manufactured by Matsudensha Co., Ltd.) having a light control function, and set the distance between the white LED light source and the color correction filter After adjusting to 500 mm, the illuminance of the white LED light source was adjusted so that the illuminance was 3000 lx (lux).
  • GR10-N ring-type white LED light source
  • the maximum value of the optical density in the wavelength range of 550 nm to 650 nm after 500 hours of white LED irradiation is OD 3
  • the maximum value of the optical density in the wavelength range of 420 nm to 520 nm after 500 hours of white LED irradiation is OD 4 / OD 3 /
  • the light resistance of the color correction filter was evaluated by calculating the values of OD 1 and OD 4 / OD 2 . It can be evaluated that the light resistance is excellent as the values of OD 3 / OD 1 and OD 4 / OD 2 are closer to 1.0, and these values are preferably 0.6 or more, more preferably 0.7. The above, particularly preferably 0.8 or more.
  • the autoclave is charged with 1,000 parts of the ring-opened polymer solution thus obtained, and 0.12 parts of RuHCl (CO) [P (C 6 H 5 ) 3 ] 3 is added to the ring-opened polymer solution.
  • the reaction was heated and stirred for 3 hours under the conditions of a hydrogen gas pressure of 100 kg / cm 2 and a reaction temperature of 165 ° C. to conduct a hydrogenation reaction.
  • the obtained resin A had a number average molecular weight (Mn) of 32,000, a weight average molecular weight (Mw) of 137,000, and a glass transition temperature (Tg) of 165 ° C.
  • thermometer a thermometer, a stirrer, a three-way cock with a nitrogen inlet tube, a Dean-Stark tube and a cooling tube were attached to a four-necked flask.
  • the obtained solution was reacted at 140 ° C. for 3 hours, and the generated water was removed from the Dean-Stark tube as needed.
  • the temperature was gradually raised to 160 ° C., and the reaction was carried out for 6 hours at the same temperature.
  • the obtained filtrate was vacuum dried overnight at 60 ° C. to obtain a white powder (hereinafter also referred to as “resin B”) (yield 95%).
  • the obtained resin B had a number average molecular weight (Mn) of 75,000, a weight average molecular weight (Mw) of 188,000, and a glass transition temperature (Tg) of 285 ° C.
  • Example 1 In a container, 100 parts by weight of the resin A obtained in Synthesis Example 1, and a dye (A-1) represented by the following formula (A-1) as a dye (A) (cyanine dye, absorption maximum wavelength in dichloromethane) 0.05 part by mass, 585 nm), a dye (B) represented by the following formula (B-1) (B-1) (merocyanine dye, absorption maximum wavelength in dichloromethane; 487 nm) 0.02 mass
  • a solution having a resin concentration of 20% by weight was obtained. The resulting solution was then cast on a smooth glass plate, dried at 20 ° C. for 8 hours, and then peeled off from the glass plate.
  • the peeled coating was further dried at 100 ° C. under reduced pressure for 8 hours to obtain a substrate made of a resin substrate having a thickness of 0.1 mm, a length of 200 mm, and a width of 300 mm.
  • the obtained substrate was treated as it was as a color correction filter, and the evaluation of the optical characteristics, color reproducibility and light resistance in each wavelength region was carried out. The results are shown in Table 3.
  • Example 2 In Example 1, instead of 0.05 parts by mass of the dye (A-1), a dye (A-2) represented by the following formula (A-2) (squarylium dye, absorption maximum wavelength in dichloromethane; 576 nm Dye (B-2) represented by the following formula (B-2) (cyanine dye, absorption in dichloromethane) using 0.04 parts by mass and using 0.02 parts by mass of the dye (B-1) A resin substrate was obtained in the same manner as in Example 1 except that a maximum wavelength of 483 nm was used.
  • A-2 represented by the following formula (A-2) (squarylium dye, absorption maximum wavelength in dichloromethane; 576 nm
  • Dye (B-2) represented by the following formula (B-2) (cyanine dye, absorption in dichloromethane) using 0.04 parts by mass and using 0.02 parts by mass of the dye (B-1)
  • a resin substrate was obtained in the same manner as in Example 1 except that a maximum wavelength of 483 nm was used.
  • a resin composition (1) of the following composition was coated on one surface of the obtained transparent resin substrate with a bar coater, and heated in an oven at 70 ° C. for 2 minutes to volatilize and remove the solvent. At this time, the coating conditions of the bar coater were adjusted so that the thickness after drying was 2.0 ⁇ m. Next, exposure (exposure amount 500 mJ / cm 2 , 200 mW) was performed using a conveyor type exposure machine to cure the resin composition (1), and a resin layer was formed on the transparent resin substrate. Similarly, a resin layer comprising the resin composition (1) is formed on the other surface of the transparent resin substrate, and the transparent resin layer is provided on both sides of the resin substrate containing the dye (A) and the dye (B). A substrate was obtained.
  • Resin composition (1) 60 parts by weight of tricyclodecanedimethanol acrylate, 40 parts by weight of dipentaerythritol hexaacrylate, 5 parts by weight of 1-hydroxycyclohexyl phenyl ketone, methyl ethyl ketone (solvent, solid content concentration (TSC): 30%)
  • TSC solid content concentration
  • Example 3 In Example 1, instead of 0.05 parts by mass of the dye (A-1), a dye (A-3) represented by the following formula (A-3) (tetraazaporphyrin dye, absorption maximum wavelength in dichloromethane Dye (C-1) represented by the following formula (C-1) as a dye (C) (squarylium dye, maximum absorption wavelength in dichloromethane; 704 nm); In the same manner as in Example 1 except that .02 parts by mass was added, a base material comprising a resinous substrate was obtained. In Example 3, the obtained substrate was treated as it was as a color correction filter, and evaluation of optical characteristics, color reproducibility and light resistance in each wavelength region was performed. The results are shown in Table 3.
  • A-3 tetraazaporphyrin dye, absorption maximum wavelength in dichloromethane Dye (C-1) represented by the following formula (C-1) as a dye (C) (squarylium dye, maximum absorption wavelength in dichloromethane; 704 nm
  • Example 4 A substrate made of a resin substrate was obtained in the same manner as in Example 1 except that the drying conditions of the resin, the solvent and the resin substrate were changed to the contents shown in Table 1 in Example 1. In addition, in drying of the resin-made board
  • Example 5 A resin composition (2) of the following composition was coated on a transparent glass substrate “OA-10G (200 ⁇ m thick)” (manufactured by Nippon Electric Glass Co., Ltd.) cut into a size of 200 mm long and 300 mm wide using a bar coater. The solvent was removed by evaporation by heating at 80 ° C. for 2 minutes on a hot plate. At this time, the coating conditions of the bar coater were adjusted so that the thickness after drying was 4.0 ⁇ m. Next, exposure (exposure dose: 500 mJ / cm 2 , 200 mW) is performed using a conveyor type exposure machine to cure the resin composition (2), and a transparent resin layer containing a dye (A) and a dye (B) is used. The base material consisting of a glass substrate was obtained.
  • OA-10G 200 ⁇ m thick
  • Resin composition (2) 20 parts by weight of tricyclodecanedimethanol acrylate, 80 parts by weight of dipentaerythritol hexaacrylate, 4 parts by weight of 1-hydroxycyclohexyl phenyl ketone, 1.2 parts by weight of dye (A-1), dye ( B-1) 0.5 parts by weight, methyl ethyl ketone (solvent, TSC: 45%)
  • the obtained substrate was treated as a color correction filter as it was, and the evaluation of the optical characteristics, color reproducibility and light resistance in each wavelength region was performed. The results are shown in Table 3.
  • Example 6 In a container, the resin A obtained in Resin Synthesis Example 1 and methylene chloride were added to prepare a solution having a resin concentration of 20% by weight. Then, a resin substrate was produced in the same manner as in Example 1 except that the obtained solution was used.
  • Example 6 the obtained substrate was treated as it was as a color correction filter, and evaluation of optical characteristics, color reproducibility and light resistance in each wavelength region was performed. The results are shown in Table 3.
  • Example 7 In the same manner as in Example 1, a base material made of a resinous substrate was obtained. Subsequently, an SiN x film was formed to a thickness of 70 nm as a gas barrier layer on one surface of the obtained base material using a sputtering apparatus. At this time, sputtering was performed using an argon / oxygen mixed gas at a temperature of 100 ° C., using SiN 4 as a target. Furthermore, a SiN x film was formed to a thickness of 70 nm as a gas barrier layer in the same manner on the other side of the substrate to obtain a color correction filter having a gas barrier layer on both sides of the substrate. The optical properties, color reproducibility and light fastness of the obtained color correction filter in each wavelength region were evaluated. The results are shown in Table 3.
  • Example 8 In the same manner as in Example 1, a base material made of a resinous substrate was obtained. Subsequently, on one surface of the obtained substrate, a SiO x layer was formed to a thickness of 50 nm as a gas barrier layer by plasma CVD.
  • tetramethyldisiloxane vaporized at 40 ° C. hereinafter abbreviated as “TMDSO”
  • Example 9 In the same manner as in Example 1, a base material made of a resinous substrate was obtained. Subsequently, dielectric multilayer film (I) in which six SiO 2 layers and six TiO 2 layers are alternately laminated as an anti-reflection film on one surface of the obtained base material by a vapor deposition method (deposition temperature 100 ° C.) It formed a film.
  • the dielectric multilayer film was designed as the input parameter (Target value) is as described in Table 1 below using optical thin film design software (Essential Macleod, manufactured by Thin Film Center).
  • Example 9 As a result of the optimization of the film configuration, in Example 9, a multilayer deposited film having a stacked number of 6 was formed, in which SiO 2 layers with a thickness of 23 to 95 nm and TiO 2 layers with a thickness of 12 to 35 nm were alternately stacked. Furthermore, a dielectric multilayer film (II) having the same film configuration as an antireflective film is formed on the other surface of the substrate by vapor deposition to obtain a color correction filter having an antireflective layer on both surfaces of the substrate.
  • Table 2 An example of the optimized film configuration is shown in Table 2.
  • Comparative Example 1 A substrate made of a resin substrate was obtained in the same manner as in Example 1 except that the dye (A-1) and the dye (B-1) were not used.
  • the obtained base material was handled as a color correction filter as it was, and evaluation of the optical characteristic in each wavelength range, color reproducibility, and light resistance was implemented. The results are shown in Table 3.
  • Comparative Example 2 Same as Example 1 except that 0.09 parts by mass of the dye (A-3) was used instead of 0.05 parts by mass of the dye (A-1), and that the dye (B-1) was not used. Thus, a base material made of a resinous substrate was obtained. In the comparative example 2, the obtained base material was handled as a color correction filter as it was, and evaluation of the optical characteristic in each wavelength range, color reproducibility, and light resistance was implemented. The results are shown in Table 3.
  • Comparative Example 3 A substrate made of a resin substrate was obtained in the same manner as in Example 3 except that the dye (B-1) was not used. In the comparative example 3, the obtained base material was handled as a color correction filter as it was, and evaluation of the optical characteristic in each wavelength range, color reproducibility, and light resistance was implemented. The results are shown in Table 3.
  • the form of the base material applied in Examples and Comparative Examples, the various compounds and members constituting the base material, and the drying conditions of the (transparent) resin substrate are as follows.
  • Form (1) Resinous substrate containing pigment (A) and pigment (B)
  • Form (2) Transparent resin layer on both sides of resinous substrate containing pigment (A) and pigment (B)
  • Form (3) Having a resin layer containing a dye (A) and a dye (B) on one side of a glass substrate.
  • Form (4) Having a resin layer containing a dye (A) and a dye (B) on both sides of a transparent resin substrate
  • Form (5) Transparent resin substrate not containing dye
  • Form (6) Transparent resin substrate containing dye (A)
  • Form (7) Transparent resin substrate containing dye (A) and dye (C)
  • Resin A Cyclic (poly) olefin resin (Resin Synthesis Example 1)
  • Resin B Aromatic polyether resin (Resin synthesis example 2) ⁇ Glass substrate> Glass substrate (1): Transparent glass substrate “OA-10G (thickness 200 ⁇ m)” (manufactured by Nippon Electric Glass Co., Ltd.) cut to a size of 60 mm long and 60 mm wide
  • Solvent (1) Methylene Chloride Solvent (2): N, N-Dimethylacetamide ⁇ Drying condition of resin substrate> Condition (1): 20 ° C./8 hr ⁇ 100 ° C./8 hr under reduced pressure Condition (2)
  • the color correction filters obtained in Examples 1 to 9 can improve the color reproducibility of the liquid crystal display device having a white LED backlight as compared with the filters of Comparative Examples 1 to 3. I understood it.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
  • Liquid Crystal (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'un filtre de correction de couleur peu coûteux et d'un dispositif d'affichage dans lequel ledit filtre est utilisé, ledit filtre effectuant efficacement la séparation entre le bleu et le vert et entre le vert et le rouge, et améliorant aussi la reproductibilité des couleurs. Ce filtre de correction de couleur est appliqué dans des LED blanches, et est caractérisé par le fait qu'il comprend un substrat qui comporte une couche de résine, ledit substrat contenant un colorant (A) qui a un maximum d'absorption dans la région de longueurs d'onde entre 550 et 650 nm, et un colorant (B) qui a un maximum d'absorption dans la région de longueurs d'onde entre 420 et 520 nm.
PCT/JP2016/071421 2015-07-22 2016-07-21 Filtre de correction de couleur et dispositif d'affichage dans lequel celui-ci est utilisé Ceased WO2017014272A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019032371A (ja) * 2017-08-04 2019-02-28 Jsr株式会社 光学フィルターおよびその用途
WO2019189463A1 (fr) * 2018-03-29 2019-10-03 富士フイルム株式会社 Filtre correcteur de couleur pour source lumineuse à diodes électroluminescentes organiques blanches, et dispositif d'affichage à diodes électroluminescentes organiques
JP2021025879A (ja) * 2019-08-05 2021-02-22 株式会社Ａｏｋｉ 光変色検査方法
US12408537B2 (en) 2019-09-30 2025-09-02 Fujifilm Corporation Laminate and organic electroluminescent display device

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JP2004245996A (ja) * 2003-02-13 2004-09-02 Toppan Printing Co Ltd 色補正フィルタ及びバックライトユニット、並びに液晶表示装置
JP2009251511A (ja) * 2008-04-10 2009-10-29 Fujimori Kogyo Co Ltd 色補正フィルター
WO2013168565A1 (fr) * 2012-05-07 2013-11-14 山本化成株式会社 Composition de résine et article moulé
JP2014130250A (ja) * 2012-12-28 2014-07-10 Yamada Chem Co Ltd 色補正フィルタ、照明装置及びディスプレイ装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004245996A (ja) * 2003-02-13 2004-09-02 Toppan Printing Co Ltd 色補正フィルタ及びバックライトユニット、並びに液晶表示装置
JP2009251511A (ja) * 2008-04-10 2009-10-29 Fujimori Kogyo Co Ltd 色補正フィルター
WO2013168565A1 (fr) * 2012-05-07 2013-11-14 山本化成株式会社 Composition de résine et article moulé
JP2014130250A (ja) * 2012-12-28 2014-07-10 Yamada Chem Co Ltd 色補正フィルタ、照明装置及びディスプレイ装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019032371A (ja) * 2017-08-04 2019-02-28 Jsr株式会社 光学フィルターおよびその用途
WO2019189463A1 (fr) * 2018-03-29 2019-10-03 富士フイルム株式会社 Filtre correcteur de couleur pour source lumineuse à diodes électroluminescentes organiques blanches, et dispositif d'affichage à diodes électroluminescentes organiques
KR20200124256A (ko) * 2018-03-29 2020-11-02 후지필름 가부시키가이샤 백색 유기 일렉트로 루미네선스 광원용 색보정 필터, 및 유기 일렉트로 루미네선스 표시 장치
JPWO2019189463A1 (ja) * 2018-03-29 2020-12-03 富士フイルム株式会社 白色有機エレクトロルミネッセンス光源用色補正フィルタ、及び有機エレクトロルミネッセンス表示装置
KR102453733B1 (ko) * 2018-03-29 2022-10-14 후지필름 가부시키가이샤 백색 유기 일렉트로 루미네선스 광원용 색보정 필터, 및 유기 일렉트로 루미네선스 표시 장치
US11950480B2 (en) 2018-03-29 2024-04-02 Fujifilm Corporation Color correction filter for white organic electroluminescent light source, and organic electroluminescent display device
JP2021025879A (ja) * 2019-08-05 2021-02-22 株式会社Ａｏｋｉ 光変色検査方法
US12408537B2 (en) 2019-09-30 2025-09-02 Fujifilm Corporation Laminate and organic electroluminescent display device

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