WO2005098481A1 - 干渉縞の発生を防止した帯電防止性反射防止フィルム - Google Patents
干渉縞の発生を防止した帯電防止性反射防止フィルム Download PDFInfo
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- WO2005098481A1 WO2005098481A1 PCT/JP2005/003989 JP2005003989W WO2005098481A1 WO 2005098481 A1 WO2005098481 A1 WO 2005098481A1 JP 2005003989 W JP2005003989 W JP 2005003989W WO 2005098481 A1 WO2005098481 A1 WO 2005098481A1
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- antistatic
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- refractive index
- antistatic agent
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/111—Anti-reflection coatings using layers comprising organic materials
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
Definitions
- the present invention has an antistatic property that prevents the occurrence of interference fringes and prevents dust from adhering, and is excellent in coating film adhesion and is suitable for displays such as liquid crystal displays and plasma displays.
- the present invention relates to an antireflection film used for the surface of an optical article.
- the display surface of an optical article such as a display such as a liquid crystal display or a plasma display is required to have a low external light source such as a fluorescent lamp and a small reflection of irradiated light in order to enhance its visibility.
- an anti-reflection film having a low-refractive-index layer having a lower refractive index than that of the lower layer is formed on the surface of an optical article directly or via another layer on a transparent base film. Pasting is done.
- the surface of the optical article is scratched, the visibility is deteriorated, so that the antireflection film is given a hard performance.
- optical articles that also have plasticity are insulative and are charged by static electricity or the like, and if dust adheres to the surface, the visibility deteriorates. Therefore, it is required to impart antistatic properties to the optical articles.
- an antistatic layer containing a metal oxide is formed on a transparent base film, and a hard layer is further formed thereon.
- An antistatic antireflection film in which a coat layer is formed and a low refractive index layer having a refractive index lower than that of a lower layer is formed as an uppermost layer is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-255403 (Patent Document 1). Has been.
- Patent Document 2 JP-A-2003-301018
- JP-A-2002-3751 This is known from Patent Document 26.
- Patent Document 27 Japanese Patent Application Laid-Open No. 2002-256053
- Patent document 1 JP 2001-255403 A Patent Document 2: Japanese Patent Application Laid-Open No. 2003-301018 Patent Document 3: Japanese Patent Publication No. 49-23828 Patent Document 4: Japanese Patent Publication No. 49-23827 Patent Document 5: Japanese Patent Application No. 47-28937 Patent Document 6: Japanese Patent Application Laid-Open No. 7-41695 Patent Document 7: Japanese Patent Publication No. 55-734 Patent Document 8: Japanese Patent Application Laid-Open No. 50-54672 Patent Document 9: Japanese Patent Application Laid-Open No. 59-14735 Patent Document 10 Japanese Patent Application No.
- Patent Document 11 Patent Document 11 JP-A-57--18176 Patent Document 12 JP-A-57-56059 Patent Document 13 JP-B 53--13223 Patent Document 14 JP-B 57-15376 Patent Document 15 Japanese Patent Publication No. 53-45231 Patent Document 16 Japanese Patent Publication No. 55-145578 Patent Document 17 Japanese Patent Publication No. 55-65950 Patent Document 18 Japanese Patent Publication No. 55-67746 Patent Document 19 Japanese Patent Publication No. 57-- No. 11342 Patent Document 20 Japanese Patent Publication No. 57--19735 Patent Document 21 Patent Publication No. 58-56858 Patent Document 22 Japanese Patent Publication No. 61-27853 Patent Document 23 Japanese Patent Publication No. 62- -9346 JP Patent Document 24 JP-A-10-279833 JP Patent Document 25 JP 2000-80169 JP Patent Document 26 JP 2002-3751 JP Patent Document 27 JP 2002--256053 JP Disclosure
- the antireflection films described in Patent Documents 1 and 2 each include an antistatic layer using a metal oxide as an antistatic material in order to prevent a decrease in visibility due to dust adsorption on the display surface. Has formed.
- the metal oxide film generally has a refractive index higher than that of the binder resin, and the antistatic layer to which the metal oxide is added has a higher refractive index than that of the base film or the hard coat layer.
- a refractive index difference occurs between the material film and the antistatic layer or between the hard coat layer and the antistatic layer. Due to these refractive index differences, there is a problem that interference fringes are generated and visibility of an optical article such as a display is deteriorated.
- a triacetyl cellulose film (transparent substrate film) has a refractive index of about 1.5, and a metal oxide.
- the antistatic layer contains a refractive index of about 1.57-1.60, and the hard coat layer has a refractive index of about 1.50.
- the external light that has entered the surface is reflected at the interface between the antistatic layer and the hard coat layer, and the reflected light causes interference, which is observed as interference unevenness (color unevenness).
- the present invention provides an antireflection film that prevents the occurrence of interference fringes, has antistatic properties, has excellent coating adhesion, and has good transparency of the coating after a high-temperature and high-humidity test.
- the purpose is to do.
- the first antireflection film of the present invention for solving the above-mentioned problems is a polymer-type antistatic agent, a low-molecular-weight antistatic agent having a cross-linking group, and a conductive agent on a transparent base film.
- An antistatic node coat layer containing an antistatic agent selected from antistatic agents, an ionizing radiation-curable resin, and a low refractive index layer having a refractive index lower than that of the lower layer directly in contact therewith.
- the hard coat layer is provided with an antistatic function.
- the two functions of the antistatic property and the hard property are separated into separate layers. May be provided. That is, the second antireflection film of the present invention comprises a transparent antistatic agent selected from a high molecular weight antistatic agent, a low molecular weight antistatic agent having a cross-linking group, and a conductive antistatic agent on a transparent base film.
- An antistatic layer containing an inhibitor and a binder resin, a hard coat layer further containing an ionizing radiation-curable resin thereon, and a lower refractive index than a lower layer directly in contact therewith.
- An antireflection film comprising a low refractive index layer having a low refractive index formed in this order, the difference in refractive index between the transparent base film and the antistatic layer, and the refractive index between the antistatic layer and the hard coat layer. Since the absolute values of the rate differences are both within 0.03, occurrence of interference fringes is prevented.
- the antistatic hard coat layer or the antistatic layer in the antireflection film of the present invention uses an organic antistatic material having a lower refractive index than that of a metal oxide. Adjust the absolute value of the difference between the refractive index of the transparent substrate film and the antistatic layer to within 0.03, and adjust the absolute value of the difference between the antistatic layer and the hard coat layer to within 0.03. can do.
- the antireflection film of the present invention uses an antistatic layer containing a reactive group-introduced or salt-introduced polymer-type antistatic material, or a conductive polymer-type antistatic material.
- the absolute value of the refractive index difference between the transparent base film and the antistatic hard coat layer or the antistatic layer is within 0.03, and the absolute value of the refractive index difference between the antistatic layer and the hard coat layer is 0.03. It can be within 03, preventing the occurrence of interference fringes at the interface between the transparent base film and the antistatic hard coat layer or the antistatic layer, and at the interface between the antistatic layer and the hard coat layer. be able to.
- FIG. 1 is a schematic cross-sectional view showing a layer configuration of an antireflection film according to a first embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view illustrating a layer configuration of an antireflection film according to a second embodiment of the present invention. Explanation of reference numerals [0014] 1 Transparent base film
- FIG. 1 is a schematic cross-sectional view showing a layer configuration of an antireflection film according to a first embodiment of the present invention.
- an antistatic hard coat layer 2-1 is formed on a transparent base film 1, and a low refractive index layer 3 is further formed thereon.
- FIG. 2 is a schematic sectional view showing a layer configuration of an antireflection film according to a second embodiment of the present invention.
- the anti-reflection film of FIG. 2 is an anti-reflection film composed of two layers of a hard property and an anti-static property, that is, an anti-static layer 2-2 is formed on a transparent base film 1, Further, a hard coat layer 2-3 is formed thereon, and a low refractive index layer 3 is further formed thereon.
- the antistatic hard coat layer or the antistatic layer used in the antireflection film of the present invention needs to have a density of 1.0 ⁇ 10 13 ⁇ / mouth or less for preventing dust adhesion.
- OX 10 12 ⁇ / Electricity is charged at the mouth but no static charge is accumulated.
- the electrostatic charge is charged, but the range is immediately decayed 1.0X10 12 Q / D-1.OX ⁇ ⁇ ⁇ / port, more preferably the non-charged range 1. It is preferably 1.0 ⁇ 10 8 ⁇ or less.
- the most commonly used organic antistatic agent is to use a low molecular weight surfactant and add it to a coating composition for forming an antistatic layer to form a coating film.
- a low molecular weight surfactant comes off due to washing with water, wiping cloth, etc., and the antistatic effect is not persistent.
- ⁇ Bleed out of the antistatic agent degrades surface characteristics such as blocking. ⁇ Many have poor heat resistance.
- a low-molecular-weight surfactant is not used, since peeling is likely to occur because the surfactant is damaged.
- antistatic agent examples include a high molecular type antistatic agent, a low molecular type antistatic agent having a crosslinking group, and a conductive antistatic agent.
- Agents. The coating composition for forming the antistatic node coat layer or the antistatic layer of the antireflection film of the present invention is obtained by adding any of these antistatic agents to an ionizing radiation-curable resin.
- Polymeric antistatic agents include JP-B-49-23828 (Patent Document 3), JP-B-49-23827 (Patent Document 4), and JP-B-47-28937 (Patent Document 5).
- Patent Document 8 JP-A-59-14735
- Patent Document 9 JP-A-57-18175
- Patent Document 10 JP-A-57-18176
- Patent Document 11 Ionene-type polymer having a dissociating group in the main chain, as seen in JP-B-57-56059 (Patent Document 12); JP-B-53-13223 (Patent Document 13); JP-B-57-15376 Gazette (Patent Document 14), Japanese Patent Publication No. 53-45231 (Patent Document 15), Japanese Patent Publication 55-1455783 (Patent Document 16), Japanese Patent Publication No. 55-65950 (Patent Document 17), Japanese Patent Publication No.
- Patent Document 18 Japanese Patent Publication No. 57-113 42 Japanese Patent Publication (Patent Document 19), Japanese Patent Publication No. 57-19735 (Patent Document 20), Japanese Patent Publication No. 58-5658 (Patent Document 21), Japanese Patent Application Laid-Open No. 61-27853 (Patent Document 22), JP-A 62-9346 (Patent Document 23), JP-A-10-279833 (Patent Document 24), and JP-A 2000-80169 (Patent Document 25) Can be mentioned.
- Particularly preferred high molecular weight antistatic agents are compounds having a molecular cross-linking group among any of these high molecular weight antistatic agents, and are most preferably used for the impact-resistant layer of the antireflection film. It is a structure containing a quaternary ammonium cation. Further, a quaternary ammonium-based antistatic agent is preferred because it improves the adhesion (recoating property) to the adjacent layer and minimizes the decrease in transparency after a high temperature and humidity test. [0021] The structure of the quaternary ammonium salt contained in the polymer type antistatic agent is shown below, but the present invention is not limited thereto.
- X— Er-on (Cl—, Br—, ⁇ , F—, HS04—S04 2— , N03—, P04 3— , HP04 2— , H2PO 4—, C6H5, S03—, OH—, etc.
- R, R, R, and R represent a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms
- R and R and / or R and R combine to form a nitrogen-containing heterocycle such as piperazine
- A, B and D each represent a substituted or unsubstituted alkylene group having 210 carbon atoms, an arylene group, an alkenylene group, an arylene alkylene group, R COR-I, R COOR
- alkylene group, R, R, R and R each represent a substituted or unsubstituted alkylene
- the value of x containing the quaternary ammonium salt of the high molecular weight antistatic agent may be 1 to 70 mol%. If the amount of quaternary ammonium salt is less than 1 mol%, the antistatic property is not exhibited, and if it is more than 7 Omol%, the compatibility with the resin component becomes poor. More preferably, it is 3 to 50 mol%.
- the polymer-type antistatic agent provides a permanent antistatic resin having excellent durability compared to a low-molecular-weight surfactant and can prevent bleed-out of the antistatic agent.
- a low-refractive-index layer is laminated on the portion, an improvement in adhesion to the low-refractive-index layer can be expected.
- the antistatic agent is chemically bonded to the ionizing radiation curable binder, which is a hard coat component, by ultraviolet irradiation or electron beam irradiation. This is preferable because it is fixed in the hard coat and the bleeding-out, falling off of the antistatic agent due to washing with water, wiping with a cloth, etc. can be reduced.
- ultraviolet irradiation may cause an iridescent bond with an ionizing radiation-curable binder that is a hard coat component. It is preferable because it is fixed in the hard coat and the bleed-out, the falling off of the antistatic agent due to washing with water, wiping with a cloth, etc. can be reduced.
- a low molecular weight antistatic agent having a molecular cross-linking group may be any of an aionic, a nonionic or a cationic compound.
- Examples of the conductive antistatic agent include aliphatic conjugated polyacetylene and aromatic conjugated polyacetylene.
- Paraphenylene heterocyclic conjugated polypyrrole, polythiophene, heteroatom-containing polyarline, and mixed conjugated poly (phenylene-ylene).
- Other examples include a double-chain conjugated system, which is a conjugated system having a plurality of conjugated chains in the molecule, and a conductive complex, which is a polymer obtained by grafting or block-copolymerizing the aforementioned conjugated polymer chain to a saturated polymer. Can be listed.
- these conductive antistatic agents are polymers, they can provide permanent antistatic resins with superior durability compared to low molecular weight surfactants, prevent bleed-out of antistatic agents, and prevent When a low-refractive-index layer is laminated on top of the layer, an improvement in adhesion to the low-refractive-index layer can be expected.
- Antistatic properties an electrode used as a binder resin for a coated layer or an antistatic layer.
- Monomers, oligomers and polymers having groups can be used.
- one molecule such as a radical polymerizable monomer or oligomer having an ethylenically unsaturated bond such as an acryl group, a butyl group, or an aryl group is preferably used so that a cross-linking bond is generated between molecules of a binder component.
- the polyfunctional binder component has two or more, preferably three or more polymerizable functional groups therein. It is also possible to use other ionizing radiation-curable noinder components, for example, a photo-cationic polymerizable monomer or oligomer such as an epoxy group-containing compound. Further, in order to improve the conductivity, it is preferable that the binder is a hydrophilic binder such as EO modified so as to improve the ion propagation property. Further, it is preferable to use a binder component having a hydroxyl group remaining in the molecule. Hydroxyl groups in the binder can improve adhesion to adjacent layers such as a hard coat layer and a low refractive index layer by hydrogen bonding.
- the following binder resin In order to further add a function such as curling prevention, it is preferable to use the following binder resin.
- the resin used is atalyl resin, polyester resin, polyolefin resin, polycarbonate resin, polyamide resin, polyether resin, epoxy resin.
- the modified pentaerythritol atalylate having more than 4 functional groups includes pentaerythritol triatalylate, pentaerythritol tetraatalylate, dipentaerythritol hexaatalylate, and their modified physical properties. To be elected.
- the isocyanuric acid-modified atalylate resin or bisphenol-modified atalylate resin having a functional group of 3 or less includes modified isocyanuric acid EO-modified diatalylate, modified isocyanuric acid EO-modified triatalylate, and bisphenol F EO-modified Diatalylate, bisphenol A EO-modified diatalylate, epoxy-modified bisphenol A diatalylate, etc. Chosen from.
- the resin used when the light transmitting substrate is polyethylene terephthalate (PET) is acrylic resin, polyester resin, polyolefin resin, polycarbonate resin, polyamide resin, polyether resin, Epoxy resin, urethane resin, alkyd resin, spiro acetate resin, polybutadiene resin, polythiol polyether resin, polyhydric alcohol, ethylene glycol (meth) acrylate, pentaerythritol (meth) acrylate (Meth) acrylate resins such as stearate are selected.
- pentaerythritol triatalylate pentaerythritol tetraatalylate
- dipentaerythritol hexaatalylate pentaerythritol triatalylate
- pentaerythritol tetraatalylate pentaerythritol tetraatalylate
- dipentaerythritol hexaatalylate dipentaerythritol hexaatalylate
- their modified physical properties are also selected. It is.
- the isocyanuric acid-modified atalylate resin or bisphenol-modified atalylate resin having a functional group of 3 or less is a modified isocyanuric acid EO-modified diatalylate, a modified isocyanuric acid EO-modified triatalylate, or a bisphenol F EO-modified Power such as diatalylate, bisphenol A EO modified diatalylate, and epoxy modified bisphenol A diatalylate is also selected. These may be at least one kind in the binder resin.
- the binder resin is a photocurable resin
- a photoinitiator to initiate radical polymerization.
- the photoinitiator is not particularly restricted but includes, for example, acetophenones, benzophenones, ketals, anthraquinones, disulphide compounds, thiuram compounds, fluoramine derivatives and the like.
- the resin used for the antistatic layer has a hard property. It is not limited to an ionizing radiation-curable resin that does not need to be present, and a resin having adhesiveness to an adjacent layer is preferable.
- the thickness of the antistatic layer can be made smaller than when the antistatic hard coat layer is formed.
- an organic solvent for dissolving and dispersing the solid components is essential, and the type thereof is not particularly limited.
- alcohols such as methanol, ethanol, and isopropyl alcohol
- ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone
- esters such as ethyl acetate and butyl acetate
- halogenated hydrocarbons Group hydrocarbons.
- the “permeability” of a permeable solvent is intended to include all concepts such as permeability, swelling, and wettability with respect to a light-transmitting substrate.
- specific examples of the permeable solvent include alcohols such as isopropyl alcohol, methanol, and ethanol; ketones such as methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; esters such as methyl acetate, ethyl acetate, and butyric acetate.
- Halogenated hydrocarbons aromatic hydrocarbons such as toluene and xylene; phenols; and mixtures thereof, preferably esters (more preferably methyl acetate).
- the light-transmitting base material is triacetate cellulose (TAC)
- TAC triacetate cellulose
- the solvent used is acetate, methyl acetate, ethyl acetate, butyl acetate, chloroform, methylene chloride, trichloroethane, tetrahydrofuran, methyl acetate.
- Tylketone methyl isobutyl ketone, cyclohexanone, nitromethane, 1,4-dioxane, dioxolane, N-methylpyrrolidone, N, N-dimethylformamide, methanol, ethanol, isopropyl alcohol, butanol, isobutynoleanolone, diisopropyl ether , Methylcellosolve, ethylcellosolve, and butylcellosolve.
- the solvent used is phenol, benzene, nitrobenzene, phenol, hexane, isoprononol, acetone, methyl acetate, ethyl acetate, and acetic acid.
- the solvent used is Suitable are methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone and the like.
- the solvent used is particularly suitable to be phenol, benzene, nitrobenzene, phenol, and isoprononol.
- the components other than the above in the coating composition for forming the antistatic hard coat layer or the antistatic layer contain a polymerization initiator of an ionizing radiation-curable binder component, if necessary. May be blended.
- a polymerization initiator of an ionizing radiation-curable binder component if necessary. May be blended.
- an ultraviolet shielding agent, an ultraviolet absorber, a surface conditioner (leveling agent) and the like can be used.
- the composition for forming the antistatic hard coat layer or the antistatic layer may be an ink, or may be prepared by combining an antistatic agent, an ionizing radiation-curable binder, a photoinitiator, and a solvent. You may.
- a dispersion treatment may be performed according to a general method for preparing a coating liquid. For example, each essential component and each desired component can be mixed and processed in an arbitrary order to obtain a coating composition.
- the coating composition for forming an antistatic hard coat layer or an antistatic layer includes, for example, a spin coating method, a dip method, a spray method, a slide coating method, a bar coating method, a roll coater method, a meniscus coater method, It can be applied to a substrate by various methods such as flexographic printing, screen printing, and bead coater.
- the coating is usually dried as necessary, and then cured by radiating ionizing radiation such as ultraviolet rays or electron beams to form an antistatic layer.
- the material of the transparent substrate film is not particularly limited, but general materials used for an antireflection film can be used. Examples thereof include triacetate cellulose (TAC), polyethylene terephthalate (PET), diacetyl cellulose, and acetate. Butyrate senorellose, polyether sulfone, acrylic resin, polyurethane resin, polyester, polycarbonate, polysulfone, polyether, trimethylpentene, polyetherketone, D) Films formed of various resins such as acrylonitrile can be exemplified. The thickness of the substrate is usually about 25 ⁇ m-1000 ⁇ m.
- the hard coat layer is generally used.
- the hard coat layer used for the above can be used.
- the coating composition for forming the hard coat layer the ionizing radiation-curable resin used as the binder of the antistatic hard coat layer described in detail above can be used. Gives hardware performance.
- a commonly used method for forming a low refractive index layer may be used.
- a coating solution containing low refractive index inorganic fine particles such as silica or magnesium fluoride and a binder resin a coating solution containing low refractive index inorganic fine particles such as silica or magnesium fluoride having voids and a binder resin
- a low-refractive-index layer can be obtained by forming a thin film by applying a coating liquid containing a fluorine-based resin or the like, or by depositing low-refractive-index inorganic fine particles by vapor deposition.
- the "fine particles having voids" are defined as a result of a structure in which a gas is filled inside the fine particles and a porous structure containing Z or a gas, or a result of forming an aggregate of the fine particles, resulting in a gas having a refractive index.
- air having a particle diameter of 1.0 it refers to fine particles whose refractive index is reduced in inverse proportion to the occupation ratio of air in the fine particles as compared with the original refractive index of the fine particles, and an aggregate thereof.
- the hollow fine particles intended to be incorporated into a low dielectric material those having an average particle size within the range usable in the present invention can be preferably used.
- Layer composition I base material ZAS + HCZAR
- the production of the antireflection film composed of the transparent substrate film Z, the antistatic hard coat layer z, and the low refractive index layer was performed as follows.o
- the transparent base film was formed on the transparent base film using a triacetyl cellulose (TAC) film film (TF-T80UZ: trade name, manufactured by Fuji Film Co., Ltd., refractive index: 1.49).
- TAC triacetyl cellulose
- the coating compositions for forming an antistatic hard coat layer shown in Examples 14 to 14 and Comparative Examples 13 to 13 were bar-coated, and the solvent was removed by drying. Then, an ultraviolet irradiation apparatus (Fusion UV System Japan ( using Ltd.)), dose LOOiuJ / by ultraviolet irradiation in cm 2 to cure the hard coat layer, the thickness antistatic about 5 mu m Roh, a transparent base film Z antistatic Nono having Dokoto layer Thus, a laminated film comprising a hard coat layer was obtained.
- TAC triacetyl cellulose
- a low refractive index layer-forming coating composition having the composition shown below was bar-coated on the obtained transparent base film Z, a laminated film comprising an antistatic node coat layer, and dried to form a solvent. After the removal, ultraviolet irradiation was performed using an ultraviolet irradiation apparatus (manufactured by Fusion UV System Japan Co., Ltd.) at an irradiation dose of 260 mj / cm 2 to cure the coating film and reduce the thickness of the low refractive index layer.
- a laminate (antireflection film) comprising a transparent substrate film having a thickness of about 100 nm, an antistatic node coat layer Z and a low refractive index layer was obtained.
- TSF4460 (trade name, manufactured by GE Toshiba Silicone Co., Ltd.)
- Alkyl polyether-modified silicone oil Surface resistivity of the antireflection film obtained in the following Examples 1-4 and Comparative Examples 1-3
- the minimum reflectance, the refractive index of the low refractive index layer, the refractive index of the transparent substrate film, the presence or absence of interference fringes, and the adhesion of the coating film were as follows.
- the outermost surface of the laminate was measured at an applied voltage of 500 V for 10 seconds.
- the reflectance was measured using a spectrophotometer (UV-3100PC: trade name, manufactured by Shimadzu Corporation) equipped with a 5 ° C regular reflection measuring device.
- the reflectivity shows a value when the value becomes a minimum value near the wavelength of 550 nm.
- a bar coating was performed on a triacetyl cellulose film substrate (FT-T80UZ: trade name, manufactured by Fuji Film Co., Ltd., refractive index: 1.49) so that the film thickness was about 0: m.
- the absolute reflectance was measured using a spectrophotometer (UV-3100PC) manufactured by Shimadzu Corporation.
- the thickness of the low refractive index layer was set such that the minimum value of the reflectance was around 550 nm. From the obtained reflectance curve, the refractive index of the low refractive index layer was determined using simulation.
- interference fringe inspection lamp Na lamp
- Funatec Co., Ltd. visually inspect the lamp. If there is almost no occurrence of interference fringes, it is regarded as good. Was regarded as defective and designated as X.
- the coated sample was left in a high-temperature and high-humidity bath at 80 ° C and 90% for 500 hours, and the Haze and the surface resistance after 500 hours were measured.
- Example 1 The following components were mixed as a coating composition for forming an antistatic node coat layer to obtain a coating composition of Example 1.
- ASC-EX-9000 (trade name, manufactured by Kyoeisha Chemical Industry Co., Ltd., made into an ink as an antistatic hard coat.
- the composition is: i. High-grade quaternary ammonium salt-containing polymer polymer; ii. A radiation-curable resin, iii. Contains a hydrophilic atalylate oligomer, and both components ii. And iii. Have a reactive group that reacts by UV curing.)
- Table 1 below shows the physical properties measured by the above methods.
- Example 2 The following components were mixed as a coating composition for forming an antistatic node coat layer to obtain a coating composition of Example 2.
- UV-1000NT5 (trade name, manufactured by Nippon Danisei Chemical Co., Ltd., made into an ink as an antistatic hard coat, and is a quaternary ammonium polymer antistatic agent.)
- Table 1 below shows the physical properties measured by the above methods.
- Example 4 The following components were mixed as a coating composition for forming an antistatic node coat layer to obtain a coating composition of Example 4.
- UT-3806 (trade name, manufactured by Nippon Gosei Co., Ltd., ink-coated as an antistatic node coat) It is a quaternary ammonium polymer antistatic agent. ]
- Table 1 below shows the physical properties measured by the above methods.
- Table 1 below shows the physical properties measured by the above methods.
- Table 1 below shows the physical properties measured by the above methods.
- PETA Pentaerythritol triatalylate
- JP-518- ⁇ [Product name, manufactured by Johoku Chemical Co., Ltd .:
- Table 1 below shows the physical properties measured by the above methods.
- U-601LPA60 (Shin-Nakamura-Danigaku Co., Ltd .: Active energy ray reactive antistatic agent)
- Example 5 and Comparative Examples 5 to 8 described below an antireflection film including a transparent substrate film Z, an antistatic layer, a hard coat layer, and a low refractive index layer was produced as follows.
- a TAC film (thickness of 80 ⁇ m) as a transparent base film was coated on a triacetyl cellulose film with a coating composition for forming an antistatic layer as shown in Example 5 and Comparative Examples 4 to 16 below, and dried. After removing the solvent by UV irradiation, an ultraviolet irradiation device (Fusion
- the antistatic layer was cured to produce an antistatic layer having a thickness of about 1 ⁇ m.
- the obtained transparent base material film Z was bar-coated with a coating composition for forming a hard coat layer shown below on a laminated film comprising an antistatic layer, and the solvent was removed by drying. Fusion with UV systems Japan Co., Ltd.), subjected to ultraviolet irradiation in the irradiation injection amount LOOmiZcm 2, to cure the hard coat layer, a transparent base film Z antistatic layer having a hard coat layer having a thickness of about 5 m A laminated film composed of the Z hard coat layer was obtained.
- the above-mentioned “(1) About Examples 114 and Comparative Examples 113” are shown in the column above.
- the composition for forming a low-refractive-index layer was coated with a bar, and the solvent was removed by drying. After that, ultraviolet irradiation was performed using an ultraviolet irradiation device (manufactured by Fusion UV System Japan Co., Ltd.) at an irradiation dose of 260 mj / cm 2 to apply the coating.
- the film was cured to obtain a laminate (antireflection film) composed of a transparent substrate film having a low refractive index layer having a thickness of about 100 nm, an antistatic layer, a hard coat layer, and a low refractive index layer.
- Example 5 For the antireflection films of Example 5 and Comparative Examples 416, the measurements of the surface resistivity ( ⁇ port), the minimum reflectance, the refractive index, the presence or absence of interference fringes, and the adhesion of the coating film were as described above. The procedure was performed as shown in the column of "(1) Examples 1-4 and Comparative Examples 1-3".
- a coating composition for forming a hard coat layer was prepared by blending the following components: Pentaerythritol acrylate (PETA) 30.0 parts by mass Irgacure 184
- Example 4 The coating solution of Example 1 was applied on the above layer structure.
- Example 5 The coating solution of Example 2 was applied on the above layer structure.
- Example 6 The coating solution of Example 3 was applied on the above layer structure.
- Table 2 below shows the physical properties of the antireflection films produced by the above-mentioned production methods using the coating composition and measured by the above-mentioned methods.
- An antireflection film of Comparative Example 4 was obtained in the same manner as in Example 5 except that the antistatic layer was not formed.
- the physical properties of the antireflection film of Comparative Example 4 measured by the above method are shown in Table 2 below.
- Indium tin oxide dispersion solid content 30%, methyl isobutyl ketone solution
- Table 2 below shows the physical properties of the antireflection films produced by the above-mentioned production methods using the coating composition and measured by the above-mentioned methods.
- the following components were mixed as a coating composition for forming an antistatic layer, and A ting composition was obtained.
- Pentaerythritol triatalylate (PETA) 15.0 parts by mass
- JP-518-O [Product name, manufactured by Johoku Chemical Co., Ltd .: Alkyl chain phosphate ester (It has no cross-linking group in the molecule and belongs to low molecular weight antistatic agents.]]
- Table 2 below shows the physical properties of the antireflection films produced by the above-mentioned production methods using the coating composition and measured by the above-mentioned methods.
- the antireflection film of the present invention can prevent dust from adhering, is excellent in preventing interference fringes, and has excellent coating film adhesion, so that it can be applied to the surface of optical articles such as displays such as liquid crystal displays and plasma displays. It is useful for the antireflection film used.
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/594,691 US20080192351A1 (en) | 2004-03-31 | 2005-03-08 | Antistatic Antireflection Film Free From Occurrence Of Interference Fringes |
KR1020067017369A KR101096128B1 (ko) | 2004-03-31 | 2005-03-08 | 간섭 무늬 발생을 방지한 대전 방지성 반사 방지 필름 |
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JP2004108378 | 2004-03-31 | ||
JP2004-108378 | 2004-03-31 |
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WO2005098481A1 true WO2005098481A1 (ja) | 2005-10-20 |
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PCT/JP2005/003989 WO2005098481A1 (ja) | 2004-03-31 | 2005-03-08 | 干渉縞の発生を防止した帯電防止性反射防止フィルム |
Country Status (5)
Country | Link |
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US (1) | US20080192351A1 (ja) |
JP (1) | JP2005316428A (ja) |
KR (1) | KR101096128B1 (ja) |
TW (1) | TW200538755A (ja) |
WO (1) | WO2005098481A1 (ja) |
Cited By (1)
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EP2277952A1 (en) * | 2008-04-21 | 2011-01-26 | Dai Nippon Toryo Co., Ltd. | Composition for transparent film formation and layered transparent film |
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- 2005-03-08 WO PCT/JP2005/003989 patent/WO2005098481A1/ja active Application Filing
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EP2277952A4 (en) * | 2008-04-21 | 2014-07-23 | Dainippon Toryo Kk | COMPOSITION FOR THE FORMATION OF A TRANSPARENT FILM AND TRANSPARENT COMPOSITE FILM |
Also Published As
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US20080192351A1 (en) | 2008-08-14 |
TW200538755A (en) | 2005-12-01 |
TWI377366B (ja) | 2012-11-21 |
JP2005316428A (ja) | 2005-11-10 |
KR20060135787A (ko) | 2006-12-29 |
KR101096128B1 (ko) | 2011-12-20 |
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