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WO2012008230A1 - Élément de filtre de couleur pour papier électronique, papier électronique, procédé pour produire un élément de filtre de couleur pour papier électronique, et procédé pour fabriquer un papier électronique - Google Patents

Élément de filtre de couleur pour papier électronique, papier électronique, procédé pour produire un élément de filtre de couleur pour papier électronique, et procédé pour fabriquer un papier électronique Download PDF

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Publication number
WO2012008230A1
WO2012008230A1 PCT/JP2011/062528 JP2011062528W WO2012008230A1 WO 2012008230 A1 WO2012008230 A1 WO 2012008230A1 JP 2011062528 W JP2011062528 W JP 2011062528W WO 2012008230 A1 WO2012008230 A1 WO 2012008230A1
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WO
WIPO (PCT)
Prior art keywords
color filter
layer
electronic paper
filter member
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/062528
Other languages
English (en)
Japanese (ja)
Inventor
浩和 西條
大悟 森住
坪井　達也
千明 小幡
太郎 森本
勇樹 熊谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Publication of WO2012008230A1 publication Critical patent/WO2012008230A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices

Definitions

  • the present invention relates to a color filter member for electronic paper capable of obtaining good color display characteristics when used in electronic paper.
  • This medium encloses a display medium such as a microcapsule between opposing substrates and electrically switches the display.
  • a display medium such as a microcapsule between opposing substrates and electrically switches the display.
  • excellent characteristics such as low power consumption, bendable flexibility, thin and light, etc. Therefore, it has the outstanding feature of being rewritable and is entering the practical application stage.
  • a method for coloring the display medium itself has been proposed as a means for performing color display with the electronic paper described above.
  • this method it is difficult to disperse the display medium particles uniformly and drive them stably, so that they have not been put into practical use.
  • the present invention has been made in view of the above circumstances, and has as its main object to provide a color filter member for electronic paper that can obtain good color display characteristics when used in electronic paper. is there.
  • the present invention is used in electronic paper in which a display medium layer is disposed between two opposing substrates, at least one of which is transparent, and the display medium layer displays predetermined information.
  • a color filter member for electronic paper, the color filter base material, a color filter layer formed on one surface side of the color filter base material and having a plurality of colored layers, and the color of the color filter base material There is provided a color filter member for electronic paper having an optical functional layer or a surface protective layer disposed on the outermost surface on the surface side where no filter layer is formed.
  • the present invention since it is a color filter member for electronic paper having an optical functional layer, when used in electronic paper, the visibility of the electronic paper can be improved, and an electronic paper excellent in color display characteristics can be obtained. Obtainable.
  • the present invention since it is a color filter member for electronic paper having a surface protective layer, when used in electronic paper, scratches and dirt on the surface of electronic paper can be prevented, and color display characteristics are excellent. Electronic paper can be obtained.
  • the optical functional layer is preferably either an antiglare layer or an antireflection layer
  • the surface protective layer is preferably either a hard coat layer or an antifouling layer.
  • the touch panel layer may be disposed between the color filter substrate and the optical functional layer or the surface protective layer.
  • the transparent electrode layer may be disposed on the side where the display unit of the electronic paper is disposed with respect to the color filter substrate.
  • the display medium layer may be arranged on the side where the counter electrode substrate of the electronic paper is arranged with respect to the transparent electrode layer.
  • the present invention provides a color filter substrate, a color filter layer formed on one surface side of the color filter substrate and including a plurality of colored layers, and the color filter layer of the color filter substrate.
  • a color filter member for electronic paper having an optical functional layer or a surface protective layer disposed on the outermost surface that is not formed, a transparent electrode layer, a display medium layer, a counter substrate, and the counter substrate
  • the transparent electrode layer is arranged on the counter electrode substrate side with respect to the color filter base material
  • the display medium layer is An electronic paper is provided, wherein the electronic paper is disposed on the counter electrode substrate side with respect to the transparent electrode layer, and the counter electrode layer is disposed on the display medium layer side with respect to the counter substrate.
  • the color filter member for electronic paper having an optical functional layer since the visibility of the electronic paper can be improved, and the electronic paper can be made excellent in color display characteristics.
  • an electronic paper color filter member having a surface protective layer since an electronic paper color filter member having a surface protective layer is used, scratches and dirt on the surface of the electronic paper can be prevented, and the electronic paper has excellent color display characteristics. Can do.
  • the color filter member for electronic paper used in the present invention can reduce the number of base materials of the constituent layers, so that the electronic paper can be made thin and the optical characteristics can be reduced by reducing the number of interfaces. Can be improved.
  • the present invention also includes a color filter base, a color filter layer formed on one surface side of the color filter base and having a plurality of colored layers, and the color filter layer of the color filter base.
  • a method for producing a color filter member for electronic paper is provided.
  • a color filter member for electronic paper with high productivity can be obtained by forming a color filter member for electronic paper that does not require high positional accuracy of each constituent layer by a roll-to-roll method. .
  • the present invention provides a color filter member forming step for forming an electronic paper color filter member by a roll-to-roll method, a transparent electrode layer and a display medium layer on the electronic paper color filter member.
  • the display medium layer is formed such that the display medium layer is disposed on the color filter layer side of the electronic paper color filter member via the transparent electrode layer, and the electronic paper color filter member with a display portion is provided.
  • the counter electrode layer is a color filter member for the electronic paper with a display unit, with respect to the counter substrate.
  • ⁇ layer side to provide a method of manufacturing an electronic paper, characterized in that it comprises a bonding step of aligning and bonding under vacuum by a sheet-to-sheet method.
  • a color filter member for electronic paper that does not require high positional accuracy of each constituent layer is formed by a roll-to-roll method, and a color filter member for electronic paper with a display unit that requires precise alignment.
  • the counter electrode substrate are bonded by vacuum alignment bonding using a sheet-to-sheet method, whereby highly accurate and highly productive electronic paper can be obtained.
  • the electronic paper excellent in the color display characteristic can be obtained by using the said color filter member for electronic paper.
  • the color filter member for electronic paper of the present invention is used for electronic paper in which a display medium layer is disposed between two opposing substrates, at least one of which is transparent, and the display medium layer displays predetermined information.
  • a color filter member for electronic paper comprising a color filter substrate, a color filter layer formed on one surface side of the color filter substrate, and comprising a plurality of colored layers, and the color filter of the color filter substrate It has an optical functional layer or a surface protective layer disposed on the outermost surface on the surface side where no layer is formed.
  • FIG. 1 is a schematic cross-sectional view showing an example of a color filter member for electronic paper according to the present invention.
  • the color filter member 10 for electronic paper illustrated in FIG. 1 is a color filter that is formed on one surface side of the color filter substrate 1 and the color filter substrate 1 and includes a plurality of colored layers (2R, 2G, 2B). It has the layer 2 and the optical function layer 3 arrange
  • the optical functional layer 3, the color filter base material 1, and the color filter layer 2 are laminated in this order, and when the electronic paper color filter member 10 shown in FIG. 1 is used for electronic paper, the color filter layer 2 A display unit of electronic paper is arranged on the side.
  • FIG. 2 is a schematic sectional view showing another example of the color filter member for electronic paper of the present invention.
  • the color filter member 10 for electronic paper illustrated in FIG. 2 is a color filter formed on one surface side of the color filter base 1 and the color filter base 1 and having a plurality of colored layers (2R, 2G, 2B). It has the layer 2 and the surface protective layer 4 arrange
  • the surface protective layer 4, the color filter substrate 1, and the color filter layer 2 are laminated in this order, and when the electronic paper color filter member 10 shown in FIG. 2 is used for electronic paper, the color filter layer 2.
  • a display unit of electronic paper is arranged on the side.
  • the present invention since it is a color filter member for electronic paper having an optical functional layer, when used in electronic paper, the visibility of the electronic paper can be improved, and an electronic paper excellent in color display characteristics can be obtained. Obtainable.
  • the present invention since it is a color filter member for electronic paper having a surface protective layer, when used in electronic paper, scratches and dirt on the surface of electronic paper can be prevented, and color display characteristics are excellent. Electronic paper can be obtained.
  • Color filter layer used for this invention is formed in the one surface side of a color filter base material, and is provided with a some colored layer.
  • “formed on one surface side of the color filter substrate” means not only when it is directly formed on one surface of the color filter substrate but also on one surface of the color filter substrate. It is a concept including the case where it forms through another layer.
  • the plurality of colored layers contained in the color filter layer are not particularly limited as long as they can produce a desired color when electronic paper is produced using the color filter member for electronic paper of the present invention. Instead, it is possible to use colored layers of respective colors used in general color filters. Among them, in the present invention, a plurality of colored layers composed of three colors of red (R), green (G), and blue (B) are usually used.
  • the plurality of colored layers used in the present invention are usually formed in a pattern so that a plurality of colors are regularly arranged, but the pattern employed in the present invention is not particularly limited, and It can select suitably according to the use etc. of the color filter member for electronic paper of invention. Examples of such a pattern include a stripe type, a mosaic type, a triangle type, and a 4-pixel arrangement type. Moreover, the area of each colored layer is not specifically limited at this time, It adjusts suitably according to the resolution etc. of the electronic paper manufactured using the color filter member for electronic paper of this invention.
  • the material of the colored layer can be the same as that used for a colored layer of a general color filter, and thus description thereof is omitted here.
  • the thickness of the colored layer used in the present invention is not particularly limited as long as a good image display can be performed when the color filter member for electronic paper of the present invention is used in electronic paper. Specifically, it can be set within a range of 0.5 ⁇ m to 3.0 ⁇ m.
  • the method for forming the colored layer is not particularly limited as long as the colored layer having a desired thickness can be formed without color mixing.
  • a method generally known methods such as a photolithography method and an ink jet method can be used.
  • the color filter layer used in the present invention has at least the above-described colored layer, but may have a configuration other than the above colored layer as necessary.
  • Such other configurations are not particularly limited, and those having an arbitrary function can be used according to the use of the color filter member for electronic paper of the present invention.
  • Examples of such another configuration include a light shielding portion formed between the colored layers in order to partition the pixels.
  • the light-shielding portion can be the same as that used in a general color filter, and thus description thereof is omitted here.
  • Color filter base material The color filter base material used for this invention supports the layer which comprises the color filter member for electronic paper of this invention, such as the said color filter layer.
  • Such a color filter substrate is not particularly limited as long as it has a desired transparency, and the same transparent substrate used for general color filters can be used. .
  • permeability in visible region is 80% or more, and, as for the color filter base material used for this invention, it is more preferable that it is 90% or more. This is because, when the transmittance is in the above range, when the color filter member for electronic paper of the present invention is used for electronic paper, it is possible to prevent a decrease in display luminance.
  • the transmittance of the color filter substrate can be measured according to JIS K7361-1 (Plastic—Testing method of total light transmittance of transparent material).
  • the color filter substrate used in the present invention may be a transparent rigid substrate having no flexibility such as a glass substrate, or a transparent flexible substrate having flexibility such as a resin film substrate. It may be a substrate. Especially, in this invention, it is preferable to use a transparent flexible base material. This is because the color filter member for electronic paper of the present invention can be manufactured by a roll-to-roll method by using a transparent flexible substrate.
  • the resin film substrate examples include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethersulfone (PES), polyimide (PI), polyetheretherketone (PEEK), polycarbonate (PC), Polyethylene (PE), polypropylene (PP), polyphenylene sulfide (PPS), polyetherimide (PEI), cellulose triacetate (CTA), cyclic polyolefin (COP), polymethyl methacrylate (PMMA), polysulfone (PSF), polyamideimide ( PAI) and the like.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PES polyethersulfone
  • PI polyetheretherketone
  • PC polycarbonate
  • PE Polyethylene
  • PP polypropylene
  • PPS polyphenylene sulfide
  • PEI polyetherimide
  • CTA cyclic polyolefin
  • COP cyclic polyolefin
  • PMMA polymethyl me
  • the thickness of the color filter substrate used in the present invention is not particularly limited, and may be appropriately adjusted according to the use of the color filter member for electronic paper of the present invention. Specifically, the thickness of the color filter substrate is preferably in the range of 10 ⁇ m to 500 ⁇ m. If the thickness of the color filter substrate is too thin, there may be a problem in strength. If the thickness of the color filter substrate is too thick, the electronic paper using the color filter member for electronic paper of the present invention is thin information. This is because it may be difficult to obtain a display panel.
  • optical functional layer used in the present invention is disposed on the outermost surface of the color filter substrate on which the color filter layer is not formed, and the color filter member for electronic paper of the present invention is applied to electronic paper. When used, the visibility of electronic paper can be improved.
  • the optical functional layer may be a layer that also serves as a surface protective layer described later.
  • the optical functional layer may be disposed alone on the outermost surface of the color filter base on which the color filter layer is not formed, and the optical functional layer is formed on the optical functional layer base.
  • the optical functional layer laminate may be disposed on the outermost surface of the color filter substrate on the side where the color filter layer is not formed.
  • the optical functional layer base material used in the present invention the same material as the color filter base material described above can be used.
  • the thickness of the optical functional layer base material is not particularly limited as long as the optical functional layer can be supported, but is preferably in the range of 10 ⁇ m to 500 ⁇ m.
  • the optical functional layer laminate is usually bonded to a color filter substrate by forming an adhesive layer made of an adhesive material on the optical functional layer substrate side.
  • the adhesive material may be any material that can be bonded with a desired strength and has transparency.
  • polycarbonate resin, polyolefin resin, acrylic resin, urethane resin, silicone resin, polyester Resin, epoxy resin and the like, and acrylic resin is preferable among them.
  • the thickness of the adhesive layer is not particularly limited as long as the optical functional layer laminate can be bonded so as not to be peeled off, and is specifically set within a range of 5 ⁇ m to 50 ⁇ m. Can do.
  • optical functional layer used in the present invention examples include an antiglare layer, an antireflection layer, a low reflection layer, and a peep prevention layer. Among them, an antiglare layer and an antireflection layer are preferable. . Hereinafter, the antiglare layer and the antireflection layer will be described.
  • Antiglare layer (antiglare layer)
  • the antiglare layer used in the present invention has antiglare properties.
  • the antiglare layer has irregularities on the surface or has internal scattering properties, thereby exhibiting antiglare properties and improving bright place contrast.
  • production of glare etc. can be suppressed.
  • a known antiglare layer can be used.
  • the material for forming the antiglare layer is not particularly limited as long as the surface has irregularities or can be a layer having internal scattering properties.
  • the light-transmitting fine particles and the binder component Can be mentioned.
  • the translucent fine particles can be organic or inorganic. From the viewpoint of ensuring the transparency of the antiglare layer, organic particles, particularly acrylic particles are preferable.
  • the acrylic fine particles are not particularly limited, and examples thereof include isocyanate compounds, ester compounds, acrylic monomer components, and copolymers with monomers copolymerizable therewith. Examples of the copolymer of the acrylic monomer component and the monomer copolymerizable therewith include, for example, methyl methacrylate-styrene copolymer.
  • examples of the inorganic fine particles include amorphous silica and inorganic silica beads.
  • the translucent fine particles may be primary particles or secondary particles.
  • the light-transmitting fine particles can be used by mixing not only one type but also two or more types having different components. Preferably, 1 to 3 types are used.
  • the translucent fine particles preferably have 80% or more (preferably 90% or more) of the whole fine particles within the range of each average particle diameter ⁇ 300 nm. Thereby, the uniformity of the uneven shape of the antiglare layer can be improved.
  • the content of the light-transmitting fine particles in the antiglare layer is preferably in the range of 5% by mass to 40% by mass with respect to the total mass of the solid content of the antiglare layer, and is 5% by mass to 20% by mass. More preferably within the range. This is because if the content is less than the above range, sufficient antiglare property cannot be imparted, and if the content exceeds the above range, the film strength may decrease.
  • the binder component used in the antiglare layer imparts film forming properties to the antiglare layer.
  • a curable organic resin is preferable, and a translucent material that transmits light when formed into a coating film is preferable.
  • Specific examples include ionizing radiation curable resins that are cured by ionizing radiation typified by ultraviolet rays or electron beams, ionizing radiation curable resins and solvent-drying resins (such as thermoplastic resins).
  • Examples of ionizing radiation curable resins include compounds having radically polymerizable functional groups such as (meth) acrylate groups, such as (meth) acrylate monomers, monomers, or monomers introduced into polymer skeletons The polymer which was made is mentioned. More specifically, (meth) acrylate monomers include ethyl (meth) acrylate, ethylhexyl (meth) acrylate, hexanediol (meth) acrylate, tripropylene glycol di (meth) acrylate, and diethylene glycol di (meth).
  • (meth) acrylate groups such as (meth) acrylate monomers, monomers, or monomers introduced into polymer skeletons The polymer which was made is mentioned. More specifically, (meth) acrylate monomers include ethyl (meth) acrylate, ethylhexyl (meth) acrylate, hexanediol (meth)
  • Polymers with a monomer introduced into the polymer skeleton include polyester resins, polyether resins, epoxy resins, urethane resins, alkyd resins, spiroacetal resins, polybutadiene resins, polythiol polyene resins, polyhydric alcohols, and fluorene resins.
  • a polymer having a molecular skeleton and a (meth) acrylate group introduced into the polymer skeleton is exemplified.
  • examples other than (meth) acrylate compounds include monofunctional or polyfunctional monomers such as styrene, methylstyrene, N-vinylpyrrolidone, or bisphenol type epoxy compounds, novolac type epoxy compounds, aromatic vinyl ethers, aliphatic vinyl ethers. And compounds having a cationically polymerizable functional group such as an oligomer or a prepolymer.
  • thermoplastic resins examples include thermoplastic resins.
  • the thermoplastic resin those generally exemplified are used. By adding the solvent-drying resin, coating film defects on the coated surface can be effectively prevented.
  • preferable thermoplastic resins include, for example, styrene resins, (meth) acrylic resins, organic acid vinyl ester resins, vinyl ether resins, halogen-containing resins, and olefin resins (including alicyclic olefin resins).
  • Polycarbonate resin polyester resin, polyamide resin, thermoplastic polyurethane resin, polysulfone resin (eg, polyethersulfone, polysulfone), polyphenylene ether resin (eg, polymer of 2,6-xylenol), cellulose Derivatives (eg, cellulose esters, cellulose carbamates, cellulose ethers), silicone resins (eg, polydimethylsiloxane, polymethylphenylsiloxane), rubbers or elastomers (eg, polybutadiene, polyisoprene) Diene rubber and the like, styrene - butadiene copolymer, acrylonitrile - butadiene copolymer, acrylic rubber, urethane rubber, silicone rubber) and the like are preferable.
  • polysulfone resin eg, polyethersulfone, polysulfone
  • polyphenylene ether resin eg, polymer of 2,6-xyleno
  • thermosetting resins include phenolic resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, unsaturated polyester resins, polyurethane resins, epoxy resins, aminoalkyd resins, melamine-urea cocondensation resins, silicon resins. And polysiloxane resin.
  • a curing agent such as a crosslinking agent and a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier and the like can be further added as necessary.
  • the antiglare layer may contain antiglare fine particles, a leveling agent, a polymerization initiator, a curing agent, a crosslinking agent, an ultraviolet blocking agent, an ultraviolet absorber and the like as necessary.
  • the antiglare layer may contain antiglare fine particles for the purpose of improving the antiglare property.
  • the average particle size of the antiglare fine particles is not particularly limited, but generally it is preferably in the range of 5 nm to 100 nm.
  • the shape of the antiglare fine particles may be any of a true sphere, an ellipse, etc., preferably a true sphere.
  • Anti-glare fine particles do not exhibit anti-glare properties, and inorganic and organic particles can be used, preferably transparent.
  • inorganic materials are preferable from the viewpoint of making the antiglare layer have a high refractive index, and examples of such particles include titanium oxide, zirconia, zinc oxide, and alumina.
  • the antiglare layer preferably contains a leveling agent such as fluorine or silicone. This is because coating stability, slipperiness, antifouling property, and scratch resistance can be imparted.
  • the antiglare layer can be formed, for example, by applying a coating liquid for forming an antiglare layer, drying, and curing as necessary.
  • the average film thickness of the antiglare layer is preferably in the range of 1 ⁇ m to 10 ⁇ m.
  • Antireflection layer (anti-reflection layer)
  • the antireflection layer used in the present invention is reflected in the background due to specular reflection of extraneous light on the electronic paper surface, image whitening and image It has a function of preventing a decrease in contrast.
  • a known antireflection layer can be used.
  • the antireflection layer for example, a material in which a material having a high refractive index and a material having a low refractive index are alternately laminated and multilayered so that the outermost surface becomes a low refractive index layer can be exemplified.
  • the refractive index of the low refractive index layer disposed on the outermost surface side of the antireflection layer is preferably 1.49 or less.
  • the low refractive index layer is obtained by diluting the above-described material into a solvent, for example, a wet coating method such as spin coating, roll coating or printing, or a vapor phase method such as vacuum deposition, sputtering, plasma CVD, or ion plating. It can be obtained by providing on a high refractive index layer described later and drying, followed by curing with heat or radiation (in the case of ultraviolet rays, a photopolymerization initiator is used).
  • the thickness of the low refractive index layer is preferably in the range of 0.05 ⁇ m to 10 ⁇ m, and more preferably in the range of 0.1 ⁇ m to 3 ⁇ m.
  • the high refractive index layer is formed by using a high refractive index binder resin in order to increase the refractive index, adding ultrafine particles having a high refractive index to the binder resin, or using these in combination. Do by.
  • the refractive index of the high refractive index layer is preferably in the range of 1.55 to 2.70.
  • thermosetting resins include phenolic resin, melamine resin, polyurethane resin, urea resin, diallyl phthalate resin, guanamine resin, unsaturated polyester resin, aminoalkyd resin, melamine-urea cocondensation resin, silicon resin, polysiloxane resin, etc.
  • a curing agent such as a crosslinking agent and a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier and the like can be added to these resins as necessary.
  • fine particles are used alone or as a mixture, and those in the form of a colloid dispersed in an organic solvent or water are favorable in terms of dispersibility, and the particle diameter thereof is in the range of 1 nm to 100 nm. From the viewpoint of the transparency of the coating film, it is preferably in the range of 5 nm to 20 nm.
  • the above-described material is diluted with a solvent, for example, on a low refractive index layer of a supporting substrate provided with a low refractive index layer by a method such as spin coating, roll coating, or printing. After being provided and dried, it may be cured by heat or radiation (in the case of ultraviolet rays, a photopolymerization initiator is used).
  • the thickness of the high refractive index layer is preferably in the range of 0.05 ⁇ m to 10 ⁇ m, and more preferably in the range of 1 ⁇ m to 4 ⁇ m.
  • the surface protective layer used in the present invention is disposed on the outermost surface of the color filter substrate where the color filter layer is not formed, and the color filter member for electronic paper of the present invention is applied to electronic paper. When used, it is possible to prevent scratches and dirt on the surface of the electronic paper.
  • the surface protective layer may be a layer that also serves as the optical functional layer described above.
  • the surface protective layer used in the present invention may be disposed alone on the outermost surface of the color filter substrate on the side where the color filter layer is not formed, and the surface protective layer is protected on the surface protective layer substrate.
  • the surface protective layer laminate having the layers formed thereon may be disposed on the outermost surface of the color filter substrate on the side where the color filter layer is not formed.
  • the surface protective layer base material used in the present invention the same color filter base material as described above can be used.
  • the thickness of the surface protective layer substrate is not particularly limited as long as the surface protective layer can be supported, and specifically, it is preferably in the range of 10 ⁇ m to 500 ⁇ m.
  • the said surface protective layer laminated body usually bonds the color filter base material by forming the adhesive layer which consists of an adhesive material in the surface protective layer base material side.
  • the adhesive layer which consists of an adhesive material in the surface protective layer base material side.
  • an adhesive material the thing similar to the adhesive material mentioned above can be used.
  • the thickness of the adhesive layer is not particularly limited as long as it can be bonded so that the surface protective layer laminate is not peeled off, and is the same as the other adhesive layers described above.
  • Examples of the surface protective layer used in the present invention include a hard coat layer, an antifouling layer, an antistatic layer, an antibacterial layer and the like, and among them, a hard coat layer and an antifouling layer are preferable.
  • a hard coat layer and an antifouling layer are preferable.
  • the hard coat layer and the antifouling layer will be described.
  • Hard coat layer used in the present invention is a layer having a function of imparting scratch resistance to the color filter member for electronic paper of the present invention.
  • a known hard coat layer can be used.
  • the “hard coat layer” refers to a layer having a hardness of “H” or higher in a pencil hardness test generally defined by JIS 5600-5-4 (1999). Especially, it is preferable that the hardness of the hard-coat layer surface is "3H" or more.
  • an ionizing radiation curable resin can be used as a material for forming such a hard coat layer.
  • the ionizing radiation curable resin include those having an acrylate-based functional group. Specific examples include relatively low molecular weight polyester resins, polyether resins, acrylic resins, epoxy resins, urethane resins, alkyd resins, spiroacetal resins, polybutadiene resins, polythiol polyether resins, polyhydric alcohols, and fluorene resins. be able to.
  • di (meth) acrylates such as ethylene glycol di (meth) acrylate and pentaerythritol di (meth) acrylate monostearate; tri (meth) such as trimethylolpropane tri (meth) acrylate and pentaerythritol tri (meth) acrylate Acrylates; polyfunctional (meth) acrylates such as pentaerythritol tetra (meth) acrylate derivatives and dipentaerythritol penta (meth) acrylate; monomers of polyfunctional compounds such as; or oligomers such as epoxy acrylate and urethane acrylate You can also.
  • the hard coat layer may contain organic fine particles or inorganic fine particles for the purpose of improving scratch resistance.
  • inorganic fine particles such as silica are preferable because of their high hardness.
  • inorganic fine particles having a reactive functional group capable of forming a crosslink with the ionizing radiation curable resin are more preferable because the film strength can be further increased.
  • the film thickness of the hard coat layer is preferably in the range of 0.1 ⁇ m to 30 ⁇ m, and more preferably in the range of 5 ⁇ m to 15 ⁇ m.
  • the formation method of the hard coat layer is not particularly limited, and examples thereof include a coating method using a hard coat layer coating solution and a transfer method for transferring the hard coat layer.
  • the antifouling layer used in the present invention is a layer provided for preventing dust and dirt from adhering or for facilitating removal even if dust adheres.
  • a known antifouling layer can be used.
  • the antifouling layer can be formed by applying a very thin antifouling agent and drying it.
  • the antifouling agent include a surfactant such as a fluorine-based surfactant, a paint containing a fluorine-based resin, a release agent such as silicone oil, or a wax.
  • the antifouling layer may be provided separately from the hard coat layer, but may be formed as an antifouling layer by adding the antifouling agent to the hard coat layer.
  • the cost since the cost can be reduced, it is preferable to add an antifouling agent to the hard coat layer to form an antifouling layer.
  • the film thickness of the antifouling layer is preferably in the range of 1 nm to 30 nm. It is because there exists a possibility that an optical influence may arise when the film thickness of a pollution protection layer exceeds the said range.
  • the color filter layer is the side on which the display section of the electronic paper is disposed, and the optical functional layer or the surface protective layer is the side that is the outermost surface of the electronic paper. Therefore, when the color filter member for electronic paper of the present invention is used for electronic paper, the color filter layer and the display portion of the electronic paper are close to each other, so that electronic paper with excellent display characteristics can be obtained.
  • the layer configuration of the color filter member for electronic paper of the present invention can be divided into two modes, an mode having an optical functional layer and a mode having a surface protective layer.
  • the optical function layer 3, the color filter substrate 1, and the color filter layer 2 may be in this order as illustrated in FIG.
  • the optical functional layer 3, the optical functional layer base material 3 ′, the adhesive layer 5, the color filter base material 1, and the color filter layer 2 may be used in this order.
  • FIG. 3 is a schematic cross-sectional view showing another example of the color filter member for electronic paper of the present invention. Reference numerals not described in FIG. 3 can be the same as those in FIG. The description in is omitted.
  • the specific layer configuration of the aspect having the surface protective layer may be the order of the surface protective layer 4, the color filter substrate 1, and the color filter layer 2 as illustrated in FIG. 2, and is illustrated in FIG.
  • the surface protective layer 4, the surface protective layer base material 4 ′, the adhesive layer 5, the color filter base material 1, and the color filter layer 2 may be used in this order.
  • FIG. 4 is a schematic cross-sectional view showing another example of the color filter member for electronic paper of the present invention. Reference numerals not described in FIG. 4 can be the same as those in FIG. The description in is omitted.
  • each layer structure it can also be set as the layer structure which provided the adhesion layer on the side by which the display part of electronic paper is arrange
  • the color filter member for electronic paper of the present invention is not particularly limited as long as it has at least the color filter substrate, the color filter layer, and the optical functional layer or the surface protective layer. However, it is possible to add a necessary configuration as appropriate. Hereinafter, such a configuration will be specifically described.
  • the touch panel layer may be arrange
  • the touch panel layer used in the present invention is usually bonded using an adhesive layer made of an adhesive material.
  • the adhesive layer may be formed on one side of the touch panel layer, or may be formed on both sides.
  • an adhesive material the thing similar to the adhesive material mentioned above can be used.
  • the thickness of the adhesive layer is not particularly limited as long as it can be bonded so that the touch panel layer does not peel off, and is the same as the other adhesive layers described above.
  • a resistive film type touch panel has a structure in which electrode surfaces formed on a substrate maintain a gap and face each other. When the finger or pen is pressed, the substrate is deformed and the electrodes come into contact. An input point is detected by applying a voltage and reading the potential gradient of the contact portion.
  • the configuration of the resistive film type touch panel layer can be the same as that described in, for example, Japanese Patent Application Laid-Open No. 2003-307723, and the description thereof is omitted here.
  • the capacitive touch panel is a method of detecting an input point by utilizing a change in capacitance when a conductor such as a finger touches the panel.
  • the projection type has an electrode structure patterned in a matrix with a dielectric interposed therebetween, and an input point is detected from a voltage change caused by the electric capacitance of each electrode.
  • the configuration of the capacitive touch panel layer can be the same as that described in, for example, JP-T-2003-511799, and the description thereof is omitted here.
  • the color filter member for electronic paper of the present invention has a touch panel layer, in an embodiment having an optical function layer, as shown in FIG.
  • an adhesive layer 5, a touch panel layer 6, an adhesive layer 5, a color filter substrate 1, and a color filter layer 2, and having a surface protective layer as shown in FIG.
  • the surface protective layer 4, the surface protective layer base material 4 ′, the adhesive layer 5, the touch panel layer 6, the adhesive layer 5, the color filter base material 1, and the color filter layer 2 are in this order. 5 and 6, the upper side is the side that is the outermost surface of the electronic paper, and the lower side is the side on which the display unit of the electronic paper is disposed.
  • each layer structure it can also be set as the layer structure which provided the adhesion layer on the side by which the display part of electronic paper is arrange
  • 5 and 6 are schematic cross-sectional views showing other examples of the color filter member for electronic paper of the present invention, and the reference numerals not described in FIGS. 5 and 6 are the same as those in FIG. The description here is omitted.
  • the transparent electrode layer may be arrange
  • the material of the transparent electrode layer used in the present invention is not particularly limited as long as it is a conductive material capable of forming a transparent electrode.
  • a conductive material capable of forming a transparent electrode.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • Conductive oxides such as tin oxide, zinc oxide, indium oxide, aluminum zinc oxide (AZO), metals such as Au and Ni
  • conductive polymers such as polyaniline, polyacetylene, polyalkylthiophene derivatives, polysilane derivatives, etc.
  • ITO is preferably used.
  • the thickness of the transparent electrode layer used in the present invention is not particularly limited as long as it can function as a transparent electrode layer, but is preferably in the range of 15 nm to 200 nm. If the thickness of the transparent electrode layer is less than the above range, it is difficult to form the transparent electrode layer with a uniform thickness. If the thickness of the transparent electrode layer exceeds the above range, This is because the manufacturing cost increases because the time and materials used for film formation increase.
  • the formation method of the transparent electrode layer used in the present invention is not particularly limited as long as the transparent electrode layer can be formed with a desired thickness.
  • a method for forming such a transparent electrode layer a general electrode film forming method can be used.
  • a PVD method such as a vacuum deposition method, a sputtering method, an ion plating method, a CVD method, a conductive paste
  • coating is mentioned.
  • the transparent electrode layer may be formed on the entire surface of the underlying layer or substrate, or may be formed in a pattern on the underlying layer or substrate surface.
  • the transparent electrode layer used in the present invention may be disposed on the side where the display unit of the electronic paper is disposed with respect to the color filter substrate alone, and the transparent electrode layer is formed on the transparent electrode layer substrate.
  • a transparent electrode layer laminated body in which a layer is formed it may be arranged on the side where the display part of electronic paper is arranged with respect to the color filter substrate.
  • a transparent electrode layer base material used for this invention the thing similar to the color filter base material mentioned above can be used.
  • the thickness of the transparent electrode layer substrate is not particularly limited as long as the transparent electrode layer can be supported, but is preferably in the range of 10 ⁇ m to 500 ⁇ m.
  • the transparent electrode layer laminate is usually bonded by forming an adhesive layer made of an adhesive material.
  • the said adhesion layer may be formed in the transparent electrode layer side of the said transparent electrode layer laminated body, and may be formed in the transparent electrode layer base material side of the said transparent electrode layer laminated body.
  • an adhesive material the thing similar to the adhesive material mentioned above can be used.
  • the thickness of the adhesive layer is not particularly limited as long as the transparent electrode layer laminate can be bonded so as not to peel off, and is the same as the other adhesive layers described above.
  • the arrangement position of the transparent electrode layer is not particularly limited as long as the transparent electrode layer is arranged on the side where the electronic paper display unit is arranged with respect to the color filter substrate. It is preferable to arrange
  • a transparent electrode layer may be the outermost surface, and a transparent electrode layer base material is It may be the outermost surface.
  • the transparent electrode layer is disposed on the outermost surface on the side where the display unit of the electronic paper is disposed, the color filter layer is disposed on the transparent electrode layer, and the color In the case of a layer configuration having only the filter base material as the base material, the transparent electrode layer and the color filter layer may be arranged in reverse.
  • the display medium layer may be arrange
  • the display medium layer used in the present invention is appropriately selected according to the electronic paper display method in which the electronic paper color filter member of the present invention is used.
  • a display method of electronic paper known ones can be applied, for example, electrophoresis method, twist ball method, powder movement method (electronic powder fluid method, charged toner type method), liquid crystal display method, thermal method. (Coloring method, light scattering method), electrochromic method, electrowetting method, magnetophoresis method and the like.
  • the electrophoresis method is preferably used. This is because this method is in a practical stage and is a particle movement type, and thus it is possible to obtain an electronic paper that is less dependent on viewing angle and excellent in responsiveness.
  • the electrophoresis method uses an electrophoresis phenomenon in which charged particles dispersed in a solvent move between electrodes by an electric field.
  • Examples of the electrophoresis method include a microcapsule method and a microcup method.
  • the microcapsule method charged white particles and black particles and a transparent dispersion medium in which these particles are dispersed are encapsulated in a microcapsule made of a transparent resin, and an electric field is applied to the white particles and the black particles.
  • the black and white display or gradation is expressed by moving up and down.
  • a dispersion medium colored with a dye and charged white particles are arranged in a cell partitioned by cup-shaped depressions (microcups), and the white particles are moved up and down by applying an electric field. Thus, white or the color of the dispersion medium is displayed.
  • the configuration, material, and formation method of the display medium layer used in the present invention can be the same as those used in general electronic paper of each display method.
  • a display medium layer in the case where the color filter member for electronic paper of the present invention is used in microcapsule electronic paper will be described as an example.
  • a display medium layer for example, a microcapsule in which a dispersion liquid composed of white particles, black particles, and a transparent dispersion medium is fixed with a binder resin can be used.
  • transparent dispersion medium examples include alcohol solvents, various esters, ketones, aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, carboxylates, and other various oils. Or a mixture of these with a surfactant or the like can be used.
  • white particles for example, white pigments such as titanium dioxide, zinc white, and antimony trioxide can be used.
  • black particles for example, black pigments such as aniline black, carbon black, and titanium black can be used.
  • these pigments may be charged with electrolytes, surfactants, metal soaps, resins, rubbers, oils, varnishes, compound charge control agents, titanium-based coupling agents, aluminum-based coupling agents, A dispersant such as a silane coupling agent, a lubricant, a stabilizer and the like may be added.
  • a material for forming the wall film of the microcapsule for example, a compound film such as a composite film of gum arabic / gelatin, urethane resin, urea resin, urea resin can be used.
  • binder resin those having good affinity for the wall film of the microcapsule, excellent adhesion to the transparent electrode layer, and insulating properties can be used.
  • polyethylene chlorinated polyethylene, ethylene-acetic acid can be used.
  • a vinyl copolymer, a silicone resin, etc. can be mentioned.
  • Such a display medium layer can be formed, for example, by applying a microcapsule dispersed in a binder resin to form an ink on the transparent electrode layer.
  • the display medium layer used in the present invention may be disposed alone on the side where the counter electrode substrate of electronic paper is disposed with respect to the transparent electrode layer, and the display medium layer is provided on the display medium layer base material.
  • the transparent electrode layer may be disposed on the side where the counter electrode substrate of electronic paper is disposed.
  • the display medium layer base material used in the present invention the same color filter base material as described above can be used.
  • the thickness of the display medium layer base material is not particularly limited as long as the display medium layer can be supported, but is preferably in the range of 10 ⁇ m to 500 ⁇ m.
  • the display medium layer laminate is usually bonded by forming an adhesive layer made of an adhesive material on the display unit base material side. As an adhesive material, the thing similar to the adhesive material mentioned above can be used.
  • the thickness of the adhesive layer is not particularly limited as long as it can be bonded so that the display medium layer laminate is not peeled off, and is the same as the other adhesive layers described above.
  • the arrangement position of the display medium layer is not particularly limited as long as it is arranged on the side where the counter electrode substrate of the electronic paper is arranged with respect to the transparent electrode layer. It is preferable that it is arrange
  • the display medium layer laminate described above is disposed on the outermost surface of the electronic paper facing the counter electrode substrate, the display medium layer may be the outermost surface.
  • the material may be the outermost surface.
  • Color filter member for electronic paper The color filter member for electronic paper of the present invention can adopt various layer configurations as described above. Among these, in the present invention, examples of preferable layer structures include the following. The left side is the side that is the outermost surface of the electronic paper, and the right side is the side on which the display unit and / or the counter electrode substrate of the electronic paper is arranged. -Optical functional layer 3, color filter substrate 1, color filter layer 2, adhesive layer 5 (see FIG. 7) Optical function layer 3, color filter substrate 1, color filter layer 2, adhesive layer 5, transparent electrode layer substrate 7 ′, transparent electrode layer 7, display medium layer 8 (see FIG. 8) By adopting these layer configurations, the number of base materials is reduced, whereby visibility is improved and a thin color filter member for electronic paper is obtained. 7 and 8 are schematic cross-sectional views showing other examples of the color filter member for electronic paper according to the present invention. Reference numerals not described in FIGS. 7 and 8 are the same as those in FIG. The description here is omitted.
  • the electronic paper of the present invention is a color filter base material, a color filter layer formed on one surface side of the color filter base material and including a plurality of colored layers, and the color filter layer of the color filter base material
  • a color filter member for electronic paper having an optical functional layer or a surface protective layer disposed on the outermost surface on which no surface is formed, a transparent electrode layer, a display medium layer, a counter substrate, and the counter substrate
  • the transparent electrode layer is disposed on the counter electrode substrate side with respect to the color filter base material, and the display medium is disposed on the other surface of the display medium. Is disposed on the counter electrode substrate side with respect to the transparent electrode layer, and the counter electrode layer is disposed on the display medium layer side with respect to the counter base material. is there.
  • FIG. 9 is a schematic cross-sectional view showing an example of the electronic paper of the present invention.
  • An electronic paper 20 illustrated in FIG. 9 includes an electronic paper color filter member 10, a transparent electrode layer 7, a display medium layer 8, an adhesive layer 5, and a counter electrode substrate 13.
  • the color filter member 10 for electronic paper illustrated in FIG. 9 is formed on one surface side of the color filter base material 1 and the color filter base material 1, and has a plurality of colored layers (2R, 2G, 2B).
  • a color filter layer 2 provided, and an optical functional layer 3 disposed on the outermost surface of the color filter substrate 1 where the color filter layer 2 is not formed. It has a counter electrode layer 12 formed on the material 11 and the counter substrate 11.
  • the electronic paper color filter member 10 is disposed on one surface of the electronic paper 20, and the counter electrode substrate 13 is disposed on the other surface of the electronic paper 20.
  • the transparent electrode layer 7 is disposed on the counter electrode substrate 13 side with respect to the color filter substrate 1, and the display medium layer 8 is disposed on the counter electrode substrate 13 side with respect to the transparent electrode layer 7.
  • the counter electrode layer 12 is disposed on the display medium layer 8 side with respect to the counter substrate 11.
  • FIG. 10 is a schematic cross-sectional view showing another example of the electronic paper of the present invention.
  • the electronic paper 20 illustrated in FIG. 10 includes an electronic paper color filter member 10, a transparent electrode layer 7, a display medium layer 8, an adhesive layer 5, and a counter electrode substrate 13.
  • the color filter member 10 for electronic paper illustrated in FIG. 10 is formed on one surface side of the color filter substrate 1 and the color filter substrate 1, and includes a plurality of colored layers (2R, 2G, 2B).
  • a color filter layer 2 provided, and a surface protective layer 4 disposed on the outermost surface of the color filter substrate 1 where the color filter layer 2 is not formed. It has a counter electrode layer 12 formed on the material 11 and the counter substrate 11.
  • the electronic paper color filter member 10 is disposed on one surface of the electronic paper 20, and the counter electrode substrate 13 is disposed on the other surface of the electronic paper 20.
  • the transparent electrode layer 7 is disposed on the counter electrode substrate 13 side with respect to the color filter substrate 1, and the display medium layer 8 is disposed on the counter electrode substrate 13 side with respect to the transparent electrode layer 7.
  • the counter electrode layer 12 is disposed on the display medium layer 8 side with respect to the counter substrate 11.
  • the color filter member for electronic paper having an optical functional layer since the visibility of the electronic paper can be improved, and the electronic paper can be made excellent in color display characteristics.
  • an electronic paper color filter member having a surface protective layer since an electronic paper color filter member having a surface protective layer is used, scratches and dirt on the surface of the electronic paper can be prevented, and the electronic paper has excellent color display characteristics. Can do.
  • the color filter member for electronic paper used in the present invention can reduce the number of base materials of the constituent layers, so that the electronic paper can be made thin and the optical characteristics can be reduced by reducing the number of interfaces. Can be improved.
  • the color filter member for electronic paper and the transparent electrode layer may be integrated, or the color filter member for electronic paper, the transparent electrode layer, and the display medium layer may be integrated. Since the color filter member for electronic paper, the transparent electrode layer, and the display medium layer are described in detail in the section “A. Color filter member for electronic paper”, description thereof is omitted here. Hereinafter, other configurations of the electronic paper of the present invention will be described.
  • Counter electrode substrate used in the present invention has a counter base material and a counter electrode layer formed on the counter base material.
  • the counter electrode layer used in the present invention may be a pixel electrode layer formed so as to be orthogonal to the stripe pattern of the transparent electrode layer, and is connected to a plurality of TFT elements and the TFT elements. It may be a TFT electrode layer having a pixel electrode.
  • a passive matrix electronic paper can be obtained
  • an active matrix electronic paper can be obtained.
  • FIG. 11 is a schematic cross-sectional view showing an example of the counter electrode substrate used in the present invention.
  • a counter electrode substrate 13 illustrated in FIG. 11 includes a counter substrate 11 and a TFT electrode layer 12 ′ formed on the counter substrate 11 and having a plurality of TFT elements 14 and pixel electrodes 15 connected to the TFT elements 14. ing.
  • the TFT element 14 includes a gate electrode 14a, a gate insulating film 14b formed on the gate electrode 14a, a semiconductor layer 14c formed on the gate insulating film 14b, and a semiconductor layer.
  • the pixel electrode 15 is formed so as to be connected to the drain electrode 14e.
  • the source electrode 14d and the drain electrode 14e are formed on the surface 14c so as to face each other at a constant interval. Further, as illustrated in FIG. 11, the TFT electrode layer 12 ′ used in the present invention has a protective film 16 formed so as to cover the TFT element 14, and a pixel electrode 15 is formed on the protective film 16. There may be.
  • the TFT element is not particularly limited and is appropriately selected according to the type of the electronic paper of the present invention.
  • the TFT element may have an a-Si TFT structure or a p-Si TFT structure. It may be.
  • a TFT element having an a-Si TFT structure either a normal stagger type (top gate structure) or an inverted stagger type (bottom gate structure) may be used.
  • an inverted stagger type either a channel etch type or a channel protect type may be used.
  • a planar type or a stagger type may be used.
  • the semiconductor layer constituting the TFT element is not particularly limited as long as it can be formed on the opposing base material.
  • silicon, an oxide semiconductor, or an organic semiconductor is used.
  • the silicon polysilicon or amorphous silicon can be used.
  • the oxide semiconductor include zinc oxide (ZnO), titanium oxide (TiO), magnesium zinc oxide (Mg x Zn 1-x O), cadmium zinc oxide (Cd x Zn 1-x O), and cadmium oxide (CdO).
  • ZnO zinc oxide
  • TiO titanium oxide
  • Mg x Zn 1-x O magnesium zinc oxide
  • Cd x Zn 1-x O cadmium zinc oxide
  • CdO cadmium oxide
  • WO tungsten oxide
  • InGaZnO-based, InGaSnO-based, InGaZnMgO-based, InAlZnO-based InFeZnO, InGaO, ZnGaO, and InZnO can be used.
  • organic semiconductors include ⁇ -electron conjugated aromatic compounds, chain compounds, organic pigments, and organosilicon compounds. More specifically, pentacene, tetracene, thiophen oligomer derivatives, phenylene derivatives, phthalocyanine compounds, polyacetylene derivatives, polythiophene derivatives, cyanine dyes and the like can be mentioned.
  • the formation method and thickness of the semiconductor layer can be the same as a general one.
  • the gate electrode, the source electrode, and the drain electrode constituting the TFT element are not particularly limited as long as they have desired conductivity, and conductive materials generally used for TFT elements can be used. . Examples of such materials include Ta, Ti, Al, Zr, Cr, Nb, Hf, Mo, Au, Ag, Pt, Mo—Ta alloy, W—Mo alloy, ITO, IZO and other inorganic materials, and And organic materials having conductivity such as PEDOT / PSS.
  • the formation method and thickness of the gate electrode, the source electrode, and the drain electrode can be the same as those in general.
  • the gate insulating film constituting the TFT element can be the same as the gate insulating film in a general TFT element.
  • An insulating organic material such as an insulating organic material can be used.
  • the formation method and thickness of the gate insulating film can be the same as a general one.
  • a protective film may be formed on the TFT element.
  • the protective film is provided to protect the TFT element.
  • the semiconductor layer can be prevented from being exposed to moisture or the like contained in the air.
  • the protective film By forming the protective film, deterioration of the TFT performance with time can be reduced.
  • silicon oxide or silicon nitride is used as such a protective film.
  • the method for forming the protective film and the thickness thereof can be the same as those in general.
  • the pixel electrode is not particularly limited as long as it is generally used for electronic paper or the like, and examples thereof include indium oxide, tin oxide, indium tin oxide (ITO), and indium tin oxide (IZO). Preferably used.
  • the formation method and thickness of the pixel electrode can be the same as a general one.
  • the counter substrate used in the present invention supports the counter electrode layer.
  • a counter substrate is not particularly limited as long as it is generally used as a substrate such as electronic paper, and preferred examples include a glass plate and a plastic plate.
  • the transparent electrode layer and the display medium layer are laminated in this order on the color filter member for electronic paper, and the display medium layer is formed using an adhesive layer made of an adhesive material.
  • the counter electrode layer of the counter electrode substrate are bonded together.
  • the adhesive layer may be formed on the display medium layer, or may be formed on the counter electrode layer.
  • the adhesive material the same adhesive material as described in the above-mentioned section “A. Color filter member for electronic paper” can be used.
  • the thickness of the adhesive layer is not particularly limited as long as the display medium layer and the counter electrode layer can be bonded so as not to peel off, and is the same as the other adhesive layers described above.
  • the specific layer configuration of the electronic paper of the present invention may be the order of the color filter member for electronic paper, the transparent electrode layer, the display medium layer, the adhesive layer, the counter electrode layer, and the counter substrate.
  • the transparent electrode layer and the display medium layer may have a base material, and when having a base material, they are laminated using an adhesive layer.
  • description here is abbreviate
  • the electronic paper of the present invention can have various layer configurations.
  • examples of preferable layer structures include the following.
  • Optical function layer 3 color filter substrate 1, color filter layer 2, adhesive layer 5, transparent electrode layer substrate 7 ′, transparent electrode layer 7, display medium layer 8, adhesive layer 5, counter electrode layer 12, counter group Material 11 (see FIG. 12)
  • FIG. 12 is a schematic cross-sectional view showing another example of the electronic paper of the present invention, and reference numerals not described in FIG. 12 are the same as those in FIG.
  • the electronic paper of the present invention is used for a display of a digital device, an electronic book, a digital signage (electronic signage), and the like.
  • the method for producing a color filter member for electronic paper according to the present invention includes a color filter substrate, a color filter layer formed on one surface side of the color filter substrate and including a plurality of colored layers, and the color filter substrate.
  • a color filter member for electronic paper with high productivity can be obtained by forming a color filter member for electronic paper that does not require high positional accuracy of each constituent layer by a roll-to-roll method. .
  • the color filter member forming step for electronic paper includes a color filter base material, a color filter layer formed on one surface side of the color filter base material and having a plurality of colored layers, and the color filter base material. This is a step of forming, by a roll-to-roll method, a color filter member for electronic paper having an optical functional layer or a surface protective layer disposed on the outermost surface on the surface side where the color filter layer is not formed.
  • the color filter member for electronic paper is the same as that described in the above-mentioned section “A. Color filter member for electronic paper”, and the description thereof is omitted here.
  • the step of forming a color filter member for electronic paper by a roll-to-roll method means that at least one layer of the layers constituting the color filter member for electronic paper in the present invention is bonded. It is sufficient if there is a step of bonding by a roll-to-roll method.
  • a color filter layer laminate in which a color filter layer is formed on a color filter base material according to a combination of members bonded by a roll-to-roll method and an optical function layer base material A mode (first mode) in which an optical functional layer laminate in which a functional layer is formed or a surface protective layer laminate in which a surface protective layer is formed on a surface protective layer substrate, a touch panel layer, and the optical function described above It can be divided into two modes: a mode of laminating the layer laminate or the surface protective layer laminate (second mode).
  • first mode in which an optical functional layer laminate in which a functional layer is formed or a surface protective layer laminate in which a surface protective layer is formed on a surface protective layer substrate, a touch panel layer, and the optical function described above
  • the 1st aspect of the color filter member formation process for electronic paper in this invention is the color filter layer laminated body in which the color filter layer was formed on the color filter base material, and the optical functional layer on the optical functional layer base material. Is a step of laminating an optical functional layer laminate having a surface protective layer laminate having a surface protective layer formed on a surface protective layer substrate by a roll-to-roll method.
  • the long color filter layer laminate and the long optical functional layer laminate or the long surface protective layer laminate are formed.
  • these laminates are bonded together by a roll-to-roll method.
  • the color filter layer may be formed after the color filter base material is bonded by a roll-to-roll method.
  • the layer structure of the color filter member for electronic paper formed according to this aspect is the same as that described in the above section “A. Color filter member for electronic paper”, and thus the description thereof is omitted here. .
  • the 2nd aspect of the color filter member formation process for electronic paper in this invention is an optical function layer laminated body by which the optical function layer was formed on the touchscreen layer and the optical function layer base material, or on a surface protective layer base material. This is a step of bonding together the surface protective layer laminate having the surface protective layer formed thereon by a roll-to-roll method.
  • the long optical functional layer laminate or the long surface protective layer laminate is formed.
  • the touch panel layer and any one of the laminates are bonded together by a roll-to-roll method.
  • the color filter layer laminate in which the color filter layer is formed on the color filter substrate is bonded by a sheet-to-sheet method.
  • the member including the touch panel layer and the color filter layer laminate may be aligned and bonded under vacuum by a sheet-to-sheet method, or alignment may be performed by a sheet-to-sheet method. You may laminate.
  • the layer structure of the color filter member for electronic paper formed according to this aspect is the same as that described in the above section “A. Color filter member for electronic paper”, and thus the description thereof is omitted here. .
  • the touch panel layer requires alignment with the color filter layer.
  • the member including the touch panel layer and the color filter layer Since the alignment is adjusted by performing the sheet-to-sheet method, which allows alignment adjustment, to be bonded to the material including the electronic component with a touch panel function and good color display characteristics when used for electronic paper.
  • a color filter member for paper can be obtained.
  • the method of alignment bonding under vacuum by a sheet-to-sheet method is not particularly limited.
  • a member including a sheet-like color filter layer and a sheet-like touch panel layer or Examples of the method include positioning with a member including a touch panel layer using alignment marks formed in advance on both members, and pressing both members through an adhesive layer.
  • the degree of vacuum is not particularly limited as long as foreign matter and bubbles can be prevented from being mixed on the bonding surface, and can be set within a range of 50 Pa to 10,000 Pa, for example.
  • the method for laminating with alignment by the sheet-to-sheet method is not particularly limited.
  • the position of a member including a sheet-like color filter layer and a member including a sheet-like touch panel layer or a touch panel layer can be exemplified.
  • the method for producing electronic paper of the present invention includes a color filter member forming step for forming the above-described color filter member for electronic paper by a roll-to-roll method, and a transparent electrode layer on the color filter member for electronic paper. And the display medium layer is formed so that the display medium layer is disposed on the color filter layer side of the color filter member for electronic paper via the transparent electrode layer.
  • the electrode substrate is connected to the color paper for electronic paper with a display portion, with respect to the counter substrate.
  • To be placed in the display medium layer side of the filter member and is characterized in that it has a bonding step of aligning and bonding under vacuum by a sheet-to-sheet method.
  • a color filter member for electronic paper that does not require high positional accuracy of each constituent layer is formed by a roll-to-roll method, and a color filter member for electronic paper with a display unit that requires precise alignment.
  • the counter electrode substrate are bonded by vacuum alignment bonding using a sheet-to-sheet method, whereby highly accurate and highly productive electronic paper can be obtained.
  • the electronic paper excellent in the color display characteristic can be obtained by using the said color filter member for electronic paper.
  • the color filter member for electronic paper is provided with a display section including a transparent electrode layer and a display medium layer.
  • the display medium layer is formed so as to be disposed on the color filter layer side of the electronic paper color filter member via the transparent electrode layer, thereby forming the electronic paper color filter member with a display unit.
  • the display unit used in this process includes a transparent electrode layer and a display medium layer.
  • the transparent electrode layer and the display medium layer are the same as those described in the above section “A. Color filter member for electronic paper”, and thus description thereof is omitted here.
  • the display unit used in this step may include a display unit base material in addition to the transparent electrode layer and the display medium layer.
  • a display part base material it can be used for this process as a display part laminated body in which the transparent electrode layer and the display medium layer were formed on the display part base material.
  • a display part base material used for this process the same thing as the color filter base material described in the above-mentioned "A. Color filter member for electronic paper" can be used.
  • the thickness of the display portion base material is not particularly limited as long as it can support the transparent electrode layer and the display medium layer, but it is preferably in the range of 10 ⁇ m to 500 ⁇ m.
  • the said display part laminated body usually forms the adhesion layer which consists of an adhesive material in the display part base material side, and is bonded together.
  • the adhesive material the same adhesive material as described in the above-mentioned section “A. Color filter member for electronic paper” can be used.
  • the thickness of the adhesive layer is not particularly limited as long as it can be bonded so that the display unit laminate is not peeled off, and is the same as the other adhesive layers described above.
  • the display unit used in this step may have a transparent electrode layer substrate in addition to the display unit substrate.
  • the display unit has a transparent electrode layer substrate, the transparent electrode layer laminate in which the transparent electrode layer is formed on the transparent electrode layer substrate, and the display medium layer in which the display medium layer is formed on the display unit substrate
  • a display unit laminate including the laminate can be used in this step.
  • the transparent electrode layer base material and the transparent electrode layer laminate are the same as those described in the above-mentioned section “A. Color filter member for electronic paper”, and thus description thereof is omitted here.
  • this process can be divided into two aspects, the aspect which does not have a display part base material, and the aspect which has a display part base material.
  • a transparent electrode layer and a display medium layer are formed in this order on the said color filter member for electronic paper.
  • the aspect which has a display part base material is further two aspects of the aspect which has only a display part base material, and the aspect which has a display part base material and a transparent electrode layer base material according to the layer structure of a display part laminated body.
  • a transparent electrode layer laminate having a transparent electrode layer formed on the transparent electrode layer base material, and a display medium layer formed on the display part base material The display medium layer laminate is formed.
  • the transparent electrode layer laminate and the display medium layer laminate are bonded together to form a display unit laminate.
  • the said display part laminated body and the said color filter member for electronic paper are bonded together using an adhesion layer.
  • the aspect which does not have a display part base material As a layer structure of the color filter member for electronic paper with a display part formed by this process, two aspects, the aspect which does not have a display part base material, and the aspect which has a display part base material, can be mentioned.
  • As a layer structure of the color filter member for electronic paper with a display part of the aspect which does not have a display part base material it becomes the order of the color filter member for electronic paper, a transparent electrode layer, and a display medium layer.
  • the aspect which has a display part base material of the aspect which has only a display part base material and the aspect which has a display part base material and a transparent electrode layer base material according to the layer structure of a display part laminated body as mentioned above. It can be divided into two aspects.
  • the layer configuration of the color filter member for electronic paper with a display unit having only the display unit base material may be the order of the color filter member for electronic paper, the display unit base material, the transparent electrode layer, and the display medium layer.
  • the color filter member for electronic paper, the transparent electrode layer, the display unit base material, and the display medium layer may be used in this order.
  • the color filter member for electronic paper As a layer structure of the color filter member for electronic paper with a display part of the aspect which has a display part base material and a transparent electrode layer base material, the color filter member for electronic paper, a transparent electrode layer base material, a transparent electrode layer, an adhesion layer, a display
  • the order may be the order of the base material and the display medium layer, or the order of the color filter member for electronic paper, the transparent electrode layer base material, the transparent electrode layer, the adhesive layer, the display medium layer, and the display part base material.
  • Color filter member for electronic paper, transparent electrode layer, transparent electrode layer base material, adhesive layer, display portion base material, display medium layer may be in this order, color filter member for electronic paper, transparent electrode layer, transparent electrode
  • the order may be a layer base material, an adhesive layer, a display medium layer, and a display portion base material.
  • the color filter member for display-equipped electronic paper and the counter electrode substrate having the counter substrate and the counter electrode layer formed on the counter substrate are combined with the counter electrode.
  • the step of alignment bonding under vacuum by a sheet-to-sheet method so that the layer is disposed on the display medium layer side of the color filter member for electronic paper with a display unit with respect to the counter substrate. is there.
  • the counter electrode substrate having the counter substrate and the counter electrode layer formed on the counter substrate is the same as that described in the section “B. Electronic paper”, and the description here is as follows. Omitted.
  • the color filter member for electronic paper with a display unit and the counter electrode substrate are usually bonded together using an adhesive layer made of an adhesive material.
  • the said adhesion layer may be formed in the said color filter member for electronic paper with a display part, and may be formed in the said counter electrode substrate.
  • the adhesive layer is the same as that described in the above section “B. Electronic paper”, and the description thereof is omitted here.
  • the method of aligning and bonding under vacuum by a sheet-to-sheet method is not particularly limited.
  • the sheet-like color filter member for electronic paper with a display unit and a sheet-fed The alignment with the said counter electrode board
  • the degree of vacuum is the same as that described in the above-mentioned section “C. Manufacturing method of color filter member for electronic paper”.
  • the manufacturing method of the electronic paper of this invention is required in addition to the said color filter member formation process for electronic paper which is an essential process, the said color filter member formation process for electronic paper with a display part, and the said bonding process. Depending on the, it may have an optional step.
  • a process for example, before the bonding step, the step of cutting out the color filter member for electronic paper with a display part formed by the color filter member forming process for electronic paper with a display part into a sheet shape, washing Examples include a process, a surface modification process such as UV irradiation, a dehumidification process, and an inspection process.
  • Electronic paper The layer structure and use of electronic paper produced by the method for producing electronic paper of the present invention are the same as those described in the above section “B. Electronic paper”, so description thereof is omitted here. .
  • the present invention is not limited to the above embodiment.
  • the above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Optical Filters (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention porte sur un élément de filtre de couleur pour papier électronique, lequel élément est apte à produire de bonnes caractéristiques d'affichage de couleur lorsqu'il est utilisé dans un papier électronique. La présente invention porte sur un élément de filtre de couleur pour papier électronique, qui est utilisé dans un papier électronique dans lequel une couche de support d'affichage est disposée entre deux substrats se faisant face, au moins l'un desdits substrats étant transparent, et une information prédéterminée étant affichée par la couche de support d'affichage. L'élément de filtre de couleur pour papier électronique est caractérisé en ce qu'il comprend : une base de filtre de couleur ; une couche de filtre de couleur qui est formée sur un côté de surface de la base de filtre de couleur et qui comprend une pluralité de couches colorées ; et une couche de fonction optique ou une couche protectrice de surface qui forme la surface située le plus à l'extérieur sur un côté de surface de la base de filtre de couleur, sur ledit côté de surface où la couche de filtre de couleur n'est pas formée.
PCT/JP2011/062528 2010-07-12 2011-05-31 Élément de filtre de couleur pour papier électronique, papier électronique, procédé pour produire un élément de filtre de couleur pour papier électronique, et procédé pour fabriquer un papier électronique Ceased WO2012008230A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010157954A JP2012022046A (ja) 2010-07-12 2010-07-12 電子ペーパー用カラーフィルタ部材、電子ペーパー、およびそれらの製造方法
JP2010-157954 2010-07-12

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WO2012008230A1 true WO2012008230A1 (fr) 2012-01-19

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CN114496404A (zh) * 2022-02-18 2022-05-13 福建师范大学 适用于无源电子纸的像素导电薄膜及其制备和应用
CN115616821A (zh) * 2022-10-11 2023-01-17 深圳莱宝高科技股份有限公司 一种电子纸上基板结构及黑白电子纸

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JP6325019B2 (ja) * 2016-05-16 2018-05-16 富士フイルム株式会社 転写材料、静電容量型入力装置の製造方法および静電容量型入力装置、並びに、これを備えた画像表示装置
US11156826B2 (en) * 2019-12-11 2021-10-26 Visera Technologies Company Limited Optical devices
CN114859619A (zh) * 2022-05-19 2022-08-05 成都捷翼电子科技有限公司 一种彩色电子纸的制作方法
CN117666183A (zh) * 2022-08-25 2024-03-08 瀚宇彩晶股份有限公司 防窥面板、母板以及防窥面板的制作方法

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JP2006162848A (ja) * 2004-12-06 2006-06-22 Sumitomo Bakelite Co Ltd 表示装置用カラーフィルタ、カラーフィルタ部材および表示装置用カラーフィルタの製造方法
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JP2010127985A (ja) * 2008-11-25 2010-06-10 Bridgestone Corp カラーフィルター基板の製造方法およびカラー情報表示用パネルの製造方法

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JP2006162848A (ja) * 2004-12-06 2006-06-22 Sumitomo Bakelite Co Ltd 表示装置用カラーフィルタ、カラーフィルタ部材および表示装置用カラーフィルタの製造方法
JP2009037119A (ja) * 2007-08-03 2009-02-19 Seiko Epson Corp 電気泳動表示装置及び電子ペーパー
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CN111948868A (zh) * 2019-05-16 2020-11-17 广州奥翼电子科技股份有限公司 电子纸显示屏及其制作方法
CN114496404A (zh) * 2022-02-18 2022-05-13 福建师范大学 适用于无源电子纸的像素导电薄膜及其制备和应用
CN114496404B (zh) * 2022-02-18 2024-01-09 福建师范大学 适用于无源电子纸的像素导电薄膜及其制备和应用
CN115616821A (zh) * 2022-10-11 2023-01-17 深圳莱宝高科技股份有限公司 一种电子纸上基板结构及黑白电子纸

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