WO2006126264A1 - 光学異方性材料の製造方法 - Google Patents
光学異方性材料の製造方法 Download PDFInfo
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- WO2006126264A1 WO2006126264A1 PCT/JP2005/009620 JP2005009620W WO2006126264A1 WO 2006126264 A1 WO2006126264 A1 WO 2006126264A1 JP 2005009620 W JP2005009620 W JP 2005009620W WO 2006126264 A1 WO2006126264 A1 WO 2006126264A1
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- liquid crystal
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- anisotropic material
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
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- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
Definitions
- the present invention relates to a method for producing an optically anisotropic material.
- a film or a plate-like optically anisotropic material is widely used as a retardation plate, a viewing angle compensation plate, a color compensation plate, or an elliptically polarizing plate by itself or in combination with other films.
- Such an optically anisotropic material is manufactured by coating a support substrate with an ultraviolet curable liquid crystalline monomer, nematically aligning it, and irradiating it with ultraviolet rays to fix the alignment state ( Patent Document 1).
- Patent Document 1 it is proposed to form a coating film of a silane coupling agent having a long-chain alkyl group as an alignment film on the support substrate in order to make the liquid crystal alignment vertical.
- the silane coupling agent is generally used to improve the adhesion between the inorganic surface and the organic surface, the silane coupling agent is supported even when the silane coupling agent is used as the alignment film. An improvement in adhesion between the substrate and the cured nematic liquid crystal layer can be expected.
- Patent Document 1 Japanese Patent Laid-Open No. 5-215921
- An object of the present invention is to solve the above-described problems of the prior art, and when producing an optically anisotropic material, the optically anisotropic material has good adhesion and no alignment unevenness on the substrate.
- An object is to enable formation of an isotropic liquid crystal layer.
- the present inventors have found that the above-described object can be achieved by applying a hydrolyzate of an alkoxysilane compound on a support substrate before or after the rubbing treatment. To complete the present invention.
- the present invention relates to a method for producing an optically anisotropic material in which an optically anisotropic liquid crystal layer is formed on a substrate, the surface of the substrate being subjected to rubbing treatment, and the rubbing treatment surface being coated with alcohol.
- Surface treatment with a hydrolyzate of a xysilane compound coating a polymerizable nematic liquid crystal composition on the surface-treated surface, aligning the coated polymerizable liquid crystal composition, and maintaining the alignment state, polymerizable liquid crystal
- a method for producing an optically anisotropic material which forms an optically anisotropic liquid crystal layer by curing the composition.
- the present invention is a method for producing an optically anisotropic material in which an optically anisotropic liquid crystal layer is formed on a substrate, wherein the surface of the substrate is surface-treated with a hydrolyzate of an alkoxysilane compound.
- the surface-treated surface is rubbed, the polymerizable nematic liquid crystal composition is applied to the rubbed surface, the coated polymerizable liquid crystal composition is aligned, and the aligned liquid crystal composition is maintained while maintaining the alignment state.
- a method for producing an optically anisotropic material in which an optically anisotropic liquid crystal layer is formed by curing the product.
- the present invention provides an optically anisotropic material obtained by the above-described manufacturing method, and a liquid crystal display device comprising the optically anisotropic material on at least one surface of a liquid crystal panel.
- the hydrolyzate of an alkoxysilane compound is coated on the substrate, so that the optically anisotropic material has good adhesion and no alignment unevenness on the substrate.
- Liquid crystal layer can be formed.
- FIG. 1 is a schematic cross-sectional view of a liquid crystal display device.
- the present invention is a method for producing an optically anisotropic material in which an optically anisotropic liquid crystal layer is formed on a substrate.
- This manufacturing method is roughly divided into two modes. One is a mode in which the substrate after the rubbing treatment is subjected to a surface treatment by a special method, and the other is a mode in which the substrate is subjected to a surface treatment by a special method and then the rubbing treatment is performed.
- a description will be given of an aspect in which the substrate after the rubbing process is surface-treated by a special method.
- the surface of the substrate is rubbed, 2) the surface of the rubbed surface is treated with a hydrolyzate of an alkoxysilane compound, and 3) Applying a polymerizable nematic liquid crystal composition to the surface-treated surface, 4) aligning the applied polymerizable liquid crystal composition, and 5) curing the polymerizable liquid crystal composition while maintaining the alignment state.
- an optically anisotropic liquid crystal layer is formed.
- a substrate on which a coating film of a polymerizable liquid crystal compound-containing composition can be formed can be used.
- TAC Cellulose, unsaponified triacetyl cellulose
- Keni-treated triacetyl cellulose hereinafter also referred to as saponified TAC
- epoxy resin phenol resin, etc.
- the plastic film can be used. These plastic films may be uniaxially stretched films or biaxially stretched films. In addition, these plastic films may be subjected to a surface treatment such as a hydrophilic treatment or a hydrophobic treatment.
- the plastic film may be a laminated film.
- a metal substrate such as aluminum, iron, or copper with a slit-like groove on the surface, or a surface etched into a slit shape.
- a glass substrate such as lucal glass, borosilicate glass, or flint glass can also be used.
- the substrate used in the present invention includes these metal substrates and glass substrates.
- Such a rubbing treatment on the surface of the substrate may be performed by providing an alignment film on the substrate in advance and applying the alignment film.
- the substrate without the alignment film is provided. Can be applied directly.
- a rubbing treatment method a force capable of adopting a known rubbing method.
- a rubbing cloth made of a material such as rayon, cotton, polyamide or the like is rubbed against a metal roll or the like, and in contact with a substrate or an alignment film.
- a method of rotating and moving the roll, a method of moving the substrate side while fixing the roll, and the like can be preferably exemplified.
- the alignment film material include polyimide, polyamide, polyvinyl alcohol, and the like.
- a silicon oxide film deposited obliquely on the surface can be used as the orientation S.
- the alkoxysilane compound is a silane compound having 2 or 3, preferably 3 alkoxy groups, for example, a methoxy group having an affinity for an inorganic surface, an ethoxy group, and a silane coupling agent. What is marketed can be used preferably.
- the silane coupling agent is a compound composed of an organic substance and a key, and has two types of substituents having different reactivity in the molecule, that is, a functional group having affinity or reactivity for the inorganic material. And having a group.
- Examples of such a functional group include an attaryloxy group, a methacryloxy group, a mercapto group, an epoxy group, an amino group, a bur group, a styryl group, a black propylene group, a ureido group, and a sulfide group.
- These functional groups can be bonded to a silicon atom via an alkenyl group or the like.
- the substrate is a glass substrate, uneven orientation tends to occur with respect to the bur group, and adhesion with respect to the styryl group, the closed propyl group, the ureido group, and the sulfide group tends to decrease.
- an attaryloxy group, a methacryloxy group, a mercapto group, and an epoxy group are particularly preferable.
- the substrate is a saponified TAC substrate
- vinyl group, styryl group, and mercapto group to decrease in adhesion and cause uneven orientation, such as epoxy group, black propyl group, ureido group.
- Groups and sulfide groups Atalyloxy groups, methacryloxy groups, and amino groups are particularly preferred because of the tendency for adhesion to decrease.
- alkoxysilane compound usable in the present invention include 3-atari-mouth lip lip trimethoxy silane, 3-methacryloxy propyl trimethoxy silane, 3_mercaptop pill trimethoxy silane, Examples include 3-glycidoxypropyltrimethoxysilane, 3-aminopropyl-trimethoxysilane, and the like.
- the hydrolyzate of the alkoxysilane compound is charged in 1 part by weight of an alkoxysilane compound, preferably in an acidic aqueous solution containing 0.01 to 5 wt% of a weak acid such as acetic acid in an amount of 0.0 :! to 50 parts by weight. And hydrolyzed under the condition of stirring at 60 ° C for 2 hours.
- the main component of the hydrolyzate of the alkoxysilane compound is a siloxane oligomer having a polymerization degree of 2 to 25.
- the hydrolyzate of the alkoxysilane compound can be used for the surface treatment as an aqueous solution without isolation. Moreover, it can also be used after diluting with a rare solvent such as alcohol, methanol, acetone, or ethyl acetate.
- the surface treatment can be performed by various methods capable of uniformly attaching the hydrolyzate of the alkoxysilane compound to the surface of the substrate. For example, a method of dipping a substrate in an aqueous solution of a hydrolyzate of an alkoxysilane compound, then pulling up from the aqueous solution and drying in a constant temperature bath at 60 to 130 ° C; Examples thereof include a method of spraying an aqueous solution on the substrate surface and drying in a thermostatic bath at 60 to 130 ° C.
- a nematic polymerizable liquid crystal composition is applied to the surface-treated surface of the substrate surface-treated with the hydrolyzate of the alkoxysilane compound.
- the nematic polymerizable liquid crystal composition is prepared by a known coating method such as a spin coating method, a roll coating method, a printing method, a dipping bow I lifting method, or a curtain coating method (die coating method). It is sufficient to apply to the surface treated surface.
- After coating it is usually dried by a conventional method. Drying conditions are not particularly limited, and it is only necessary to select conditions that can remove the organic solvent without causing the coating layer to flow or flow down.
- the solvent can be removed using air drying at room temperature, drying on a hot plate, drying in a drying furnace, blowing hot air or hot air, and the like.
- the polymerizable liquid crystal compound used in the polymerizable liquid crystal composition includes a polymerizable group such as (meth).
- a polymerizable group such as (meth).
- Smectic polymerizable liquid crystal compounds can be preferably used.
- homeotropic orientation can be imparted in the molecular structure of biphenyl derivatives, phenylbenzoate derivatives, stilbene derivatives, triphenylene derivatives, torquesen derivatives, and the like.
- a photocurable polymerizable liquid crystal compound containing a group containing, for example, an aromatic group having a bulky substituent at the terminal, an aromatic group having a long-chain alkyl group, or an aromatic group having a fluorine atom. can be used.
- Particularly preferred as polymerizable liquid crystal compounds are compounds of general formulas (1) and (2) disclosed in paragraphs 0005 to 0007 of JP-A-2001-55573, and JP-A-2000-98134.
- the polymerizable liquid crystal composition used in the present invention contains two or more kinds of polymerized liquid crystal compounds, and at least one of them contains the polymerizable liquid crystal compound represented by any one of formulas (1) to (9).
- the compound of the general formula (2) is itself a rod-like smectic polymerizable liquid crystal compound having a homeotropic orientation, while the compound represented by the general formula (1) alone is a normal liquid crystal.
- the mixed composition as a whole exhibits liquid crystallinity.
- R 1 , R 2 and R 3 each independently represent hydrogen or a methyl group
- X represents hydrogen, chlorine, bromine, iodine, an alkyl group having 1 to 4 carbon atoms, One selected from the group consisting of a methoxy group, a cyan group and a nitro group, wherein a, b and c are each independently An integer of 2 to 12 is shown.
- F is 1,4_phenylene or 1,4-cyclohexylene group, and R ° is substituted with a halogen, a cyano group or a polymerizable terminal group.
- Or charcoal A prime number 1-7 alkyl group, alkoxy group or alkanol group which may be halogenated, and X and y each independently represents an integer of 1 to 12;
- Specific compounds of the formulas (1) to (9) include compounds of the following formulas (10) to (: 13) described in paragraphs 007 4 to 0076 of JP 2003-251643 A It is done.
- the polymerizable liquid crystal composition used in the present invention is usually a combination of 40% by weight or less, preferably 30% by weight or less, more preferably 20% by weight or less, as long as the effects of the present invention are not impaired.
- a non-liquid crystalline polymerizable compound copolymerizable with the polymerizable liquid crystal compound contained in an amount can be blended.
- polymerizable compounds examples include polyester (meth) acrylates obtained by reacting polyester methacrylates of polyhydric alcohols with monobasic acids or polybasic acids and (meth) acrylic acid; polyol groups Two isocyanate groups Polyurethane (meth) acrylate obtained by reacting the compound with (meth) acrylic acid; bisphenol A type epoxy resin, bisphenol F type epoxy resin, novolac type epoxy resin, polycarboxylic acid poly Epoxy obtained by reacting (meth) acrylic acid with an epoxy resin such as glycidyl ester, polyol polyglycidyl ether, fatty acid or cycloaliphatic epoxy resin, ammine epoxy resin, triphenol methane type epoxy resin, dihydroxybenzene type epoxy resin, etc.
- photopolymerizable compounds and compositions such as (meth) acrylate, and photopolymerizable compounds having an acryl group or a methacryl group.
- a photoreaction initiator can be appropriately added to the polymerizable liquid crystal composition used in the present invention as necessary.
- photoinitiators include, but are not limited to, benzyl (also known as bibenzoyl), benzoyl ether, benzoin isobutyl ether, benzoin isopropyl ether, benzophenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4 Benzoyl 4 'Methyl diphenylsulfide, Benzyl methyl ketal, Dimethylaminomethyl benzoate, 2-n-butoxychetil 4-dimethylaminobenzoate, p Isolamyl dimethylaminobenzoate, 3, 3'-Dimethyl 4-methoxybenzo Phenone, methylobenzoylformate, 2-methyl 1- (4- (methylthio) phenyl) -2-morpholinopropane 1-one, 2-benzylthio 2-dimethyla
- the addition amount of the photoinitiator is usually 0.01 to 20 parts by weight, preferably 0.1 to 10 parts by weight, more preferably 0.5 parts, per 100 parts by weight of the polymerizable liquid crystal composition. ⁇ 5 parts by weight.
- a sensitizer may be added to the polymerizable liquid crystal composition used in the present invention as long as the effects of the present invention are not impaired.
- the polymerizable liquid crystal composition used in the present invention is blended with an organic solvent as necessary.
- an organic solvent By using an organic solvent, it is possible to easily form a coating film of the polymerizable liquid crystal composition.
- organic solvents include cyclohexanone, cyclopentanone, benzene, toluene, xylene, n-butylbenzene, jetylbenzene, tetralin and other hydrocarbons, methoxybenzene, 1,2-dimethoxybenzene, diethyleneglycol.
- Ethers such as noredimethyl ether, acetone, methyl ethyl ketone, methyl isobutanol ketone, cyclohexanone, ketones such as 2,4_pentanedione, ethyl acetate, ethyl glycolenolemonomethylenoate acetate, propylene glycolenolemono Esters such as methylenoatenole acetate, propylene glycol monoethyl ether acetate, butyrolatatatone, amide solvents such as 2-pyrrolidone, N-methyl-2-pyrrolidone, dimethylformamide, dimethylacetamide, etc.
- ketones such as 2,4_pentanedione
- ethyl acetate ethyl glycolenolemonomethylenoate acetate
- propylene glycolenolemono Esters such as methylenoatenole acetate, propylene glyco
- Halogenous lj t-Butyl alcohol, Diacetone alcohol, Glycerin, Monoacetin , Ethylene glycol, triethylene glycol, hexylene glycol, ethylene glycol monomethyl ether, alcohols such as ethyl cellosolve and butycellosolve, phenols such as phenol and parachlorophenol, and the like. It is selected after considering solvent properties.
- the amount of the organic solvent used in the polymerizable liquid crystal composition is a force that varies depending on the solubility of the polymerizable liquid crystal compound and the layer thickness of the optically anisotropic liquid crystal layer. Usually:! To 60% by weight, preferably It is in the range of 3-40% by weight.
- a surfactant or the like may be appropriately added within a range not impairing the effects of the present invention in order to improve coatability.
- surfactants include ionic surfactants such as imidazoline, quaternary ammonium salts, alkylamine oxides and polyamine derivatives, polyoxyethylene-polyoxypropylene condensates, Secondary alcohol ethoxylates, alkylphenol ethoxylates, polyethylene glycol and esters thereof, sodium lauryl sulfate, ammonium lauryl sulfate, amines of lauryl sulfate, alkyl-substituted aromatic sulfonates, alkyl phosphates, aliphatic or aromatic Anionic surfactants such as aromatic sulfonic acid formalin condensate, lauryla Amphoteric surfactants such as midpropyl betaine and laurylaminoacetic acid betaine, non-ionic
- the amount of surfactant added depends on the type of surfactant, the composition ratio of the components of the composition for forming a liquid crystal film, the type of solvent, the type of substrate film, and the like. It is usually in the range of 10 ppm to 10%, preferably 100 ppm to 5%, more preferably 0.1% to 1% with respect to 100 parts by weight of the liquid crystal composition.
- the applied polymerizable nematic liquid crystal compound is subjected to an alignment treatment.
- a method of aligning a method of heat-treating the coating film of the polymerizable liquid crystal composition can be mentioned. Specifically, the coating film is heated to a temperature at which the polymerizable liquid crystal composition exhibits a nematic liquid crystal phase and a nematic liquid crystal alignment phase appears, and a temperature range in which the polymerizable liquid crystal composition exhibits a nematic liquid crystal alignment phase Further, there is a method in which the coating film is heated to a temperature higher by about 40 ° C. to bring the composition into an isotropic liquid state, and a nematic liquid crystal alignment phase appears by cooling in the next stage.
- the coated film of the aligned polymerizable liquid crystal composition is cured to fix the liquid crystal alignment, thereby forming an optically anisotropic liquid crystal layer.
- an optically anisotropic material having a film shape, a sheet shape, a plate shape, or the like in which an optically anisotropic liquid crystal layer is formed on the substrate is obtained.
- Curing treatment of the oriented coating film of the polymerizable nematic liquid crystal composition can be performed by irradiating the coating film with electromagnetic waves.
- the wavelength of the electromagnetic wave used for the curing treatment is not particularly limited, and can be appropriately selected from electron beams, ultraviolet rays, visible rays, infrared rays (heat rays) and the like.
- the irradiation energy, the temperature during irradiation, the irradiation atmosphere, the irradiation time, and the like can be appropriately determined according to the blending components of the polymerizable liquid crystal composition.
- optically anisotropic material obtained by the production method of the present invention described above is excellent in an optically anisotropic liquid crystal layer in which nematic alignment, preferably nematic horizontal alignment is fixed on a substrate. It is formed with good adhesion and no alignment unevenness.
- the production method of the present invention described above is a method characterized by subjecting the substrate after the rubbing treatment to a surface treatment with a hydrolyzate of an alkoxysilane compound.
- the substrate before the treatment may be subjected to a surface treatment with a hydrolyzate of an alkoxysilane compound, followed by a rubbing treatment. This aspect is also included in the present invention.
- the present invention is a method for producing an optically anisotropic material in which an optically anisotropic liquid crystal layer is formed on a substrate, and the surface of the substrate is treated with a hydrolyzate of an alkoxysilane compound. Then, the surface-treated surface is rubbed, the polymerizable liquid crystal compound-containing composition is applied to the rubbed surface, the applied polymerizable nematic liquid crystal composition is aligned, and the alignment state is maintained.
- a method for producing an optically anisotropic material for forming an optically anisotropic liquid crystal layer by curing the polymerizable liquid crystal composition is also provided. The individual components of the manufacturing method are as described for the corresponding components in the manufacturing method of the present invention described above.
- the optically anisotropic material obtained by the production method of the present invention can be used in various optical fields, for example, a twisted nematic liquid crystal display device (hereinafter referred to as TN-LCD). It can be used as a viewing angle compensation film, and can also be suitably used as an elliptically polarizing plate by combining with a polarizing plate disposed on various LCDs. Therefore, by providing the optically anisotropic material of the present invention on at least one surface of a known liquid crystal panel, for example, a liquid crystal display device with an enlarged viewing angle or color compensated can be configured. A more specific configuration example of such a liquid crystal display device is shown in Fig. 1 as a reference.
- the optically anisotropic film 2 of the present invention is provided on both surfaces of a known liquid crystal panel 1 as a viewing angle widening film or a color compensation film, and further, a known retardation plate 3 and polarizing plate 4 are provided.
- the structure is A known backlight 5 is provided on the back side of the liquid crystal panel 1, and a known hard coat layer 6 is provided on the front side.
- a trimethoxysilane-based coupling group lj (KBM — 5103 (3 _ Ataloxypropyltrimethoxysilane), Shin-Etsu Chemical Co., Ltd.) having an alicyclic group is mixed with 10 parts by weight of 1% aqueous acetic acid solution. The mixture was stirred at 60 ° C for 2 hours to obtain a transparent aqueous solution. When this solution was examined by gel permeation chromatography, it contained 98% of a polysilanol oligomer having a polymerization degree of 2 to 25 (that is, 2 to 25 mer). In addition, 2% monomer was included.
- One side of the glass substrate is rubbed in one direction with a rubbing rayon (Y-20, manufactured by Yoshikawa Chemical), and the rubbed surface is immersed in the hydrolyzate of the silane coupling agent (hydrous methanol solution). did. After 1 minute, the glass substrate was pulled up from the hydrolyzate of the silane coupling agent and dried at 100 ° C. for 10 minutes to perform surface treatment of the glass substrate.
- a rubbing rayon Y-20, manufactured by Yoshikawa Chemical
- Polymerizable nematic liquid crystal composition containing 20 wt% of 4-cyanophenyl ester of 6- (aryloxyhexyloxy) benzoic acid (RMM34, Merck & Co., Germany, the compound of the above formula (13)) 100 Parts by weight, photopolymerization initiator (Irgacure 907, 2_methyl _ 1-[4- (methylthio) phenyl] _ 2_morpholinopropane _ 1 _one, Ciba 'Specialty' Chemicals) 5 parts by weight
- a polymerizable liquid crystal composition was obtained by mixing 200 parts by weight of propylene glycol monomethyl ether acetate.
- the polymerizable liquid crystal composition was spin-coated on the surface-treated surface of the glass substrate at 100 RPM for 10 seconds, then at 680 RPM for 30 seconds, and left to dry in a constant temperature bath at 60 ° C. for 10 minutes.
- the dry coating film of the polymerizable liquid crystal composition is irradiated with 365 nm ultraviolet light at room temperature under the conditions of an illuminance of 80 mW / cm 2 and an irradiation amount of lOOOOmjZcm 2 to harden the polymerizable liquid crystal compound and thereby optically
- An anisotropic liquid crystal layer was formed to obtain an optically anisotropic material.
- Example 2 An optically anisotropic material was obtained in the same manner as in Example 1 except that the rubbing treatment was performed after the surface treatment with the hydrolyzate of the silane coupling agent.
- trimethoxysilane coupling agent having a talixoxy group instead of a trimethoxysilane coupling agent having a talixoxy group, a trimethoxysilane coupling agent having a methacryloxy group (KKBM-503 (3-methacryloxyprobitrimethoxysilane), Shin-Etsu Chemical Co., Ltd.)
- KKBM-503 3-methacryloxyprobitrimethoxysilane
- Shin-Etsu Chemical Co., Ltd. An optically anisotropic material was obtained in the same manner as in Example 1 except that it was used.
- trimethoxysilane coupling agent KBM-803 (3-mercaptopropyltrimethoxysilane), Shin-Etsu Chemical Co., Ltd.
- KBM-803 3-mercaptopropyltrimethoxysilane
- Shin-Etsu Chemical Co., Ltd. a trimethoxysilane coupling agent having an alicyclic group. Except for this, an optically anisotropic material was obtained in the same manner as in Example 1.
- trimethoxysilane coupling agent having an oxy-oxy group a trimethoxysilane coupling agent having an epoxy group (KBM-403 (3-glycidoxypropyltrimethoxysilane), Shin-Etsu Chemical Co., Ltd.)
- KBM-403 3-glycidoxypropyltrimethoxysilane
- Shin-Etsu Chemical Co., Ltd. An optically anisotropic material was obtained in the same manner as in Example 1 except that was used.
- trimethoxysilane coupling agent KBM-1003 (Burtrimethoxysilane), Shin-Etsu Chemical Co., Ltd.) having a bur group instead of a trimethoxysilane coupling agent having a talyloxy group. Except for the above, an optically anisotropic material was obtained in the same manner as in Example 1.
- An optically anisotropic material is prepared in the same manner as in Example 1 except that an amino group is used instead of the trimethoxysilane-based coupling agent having an atalyoxy group, and Shin-Etsu Chemical Co., Ltd. is used. Got.
- Example 8 instead of glass substrate, saponified triacetyl cellulose substrate (saponified TAC substrate) (Kenji conditions: TAC film (T80UZ, Fuji Photo Film Co., Ltd.) immersed in 2N KOH aqueous solution at 60 ° C for 5 minutes, An optically anisotropic material was obtained in the same manner as in Example 1 except that a sample neutralized with a 1N aqueous HC1 solution and washed with distilled water was used.
- saponified triacetyl cellulose substrate (saponified TAC substrate) (Kenji conditions: TAC film (T80UZ, Fuji Photo Film Co., Ltd.) immersed in 2N KOH aqueous solution at 60 ° C for 5 minutes.
- An optically anisotropic material was obtained in the same manner as in Example 1 except that a sample neutralized with a 1N aqueous HC1 solution and washed with distilled water was used.
- saponified triacetyl cellulose substrate (saponified TAC substrate) (Kenji conditions: TAC film (T80UZ, Fuji Photo Film Co., Ltd.) immersed in 2N KOH aqueous solution at 60 ° C for 5 minutes
- An optically anisotropic material was obtained in the same manner as in Example 2, except that a sample neutralized with a 1N aqueous HC1 solution and washed with distilled water was used.
- saponified triacetylcellulose substrate saponified triacetylcellulose substrate (saponified TAC substrate) (saponification condition: TAC film (T80UZ, Fuji Photo Film Co., Ltd.) immersed in 2N KOH aqueous solution at 60 ° C for 5 minutes, 0.1N
- An optically anisotropic material was obtained in the same manner as in Example 3 except that a sample neutralized with an aqueous HC1 solution and washed with distilled water was used.
- Trimethoxysilane coupling using saponified triacetyl cellulose substrate (saponified TAC substrate) (saponification condition: TAC film (T80UZ, Fuji Photo Film)) instead of glass substrate
- the same trimethoxysilane coupling agent KBM-903 (3-aminopropyltrimethoxysilane), Shin-Etsu Silicone Co.) having an amino group is used as in Example 1.
- An optically anisotropic material was obtained by the operation.
- a trimethoxysilane coupling agent (KBM_ 5103, Shin-Etsu Chemical Co., Ltd.) having a tali-oxy group is used so that the solid content concentration without hydrolysis is 2%.
- An optically anisotropic material was obtained in the same manner as in Example 1, except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- trimethoxysilane system with talioxy group instead of hydrolyzate of coupling agent, trimethoxysilane system with talioxy group Other than using a silane coupling agent methanol solution obtained by dissolving a coupling agent (KBM_ 5103, Shin-Etsu Chemical Co., Ltd.) in methanol so that the solid content concentration without hydrolysis is 2%. Obtained an optically anisotropic material by the same operation as in Example 2.
- a trimethoxysilane coupling agent (KBM-503, Shin-Etsu Chemical Co., Ltd.) having a methacryloxy group is added so that the solid content concentration without hydrolysis is 2%.
- An optically anisotropic material was obtained in the same manner as in Example 3, except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- a trimethoxysilane-based power coupling agent (KBM-803, Shin-Etsu Chemical Co., Ltd.) having a mercapto group should have a solid content concentration of 2% without hydrolysis.
- An optically anisotropic material was obtained in the same manner as in Example 4 except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- a trimethoxysilane-based coupling agent (KBM-403, Shin-Etsu Chemical Co., Ltd.) having an epoxy group is added to methanol so that the solid content concentration is 2% without hydrolysis.
- An optically anisotropic material was obtained in the same manner as in Example 5 except that the silane coupling agent methanol solution obtained by dissolving in was used.
- a trimethoxysilane coupling agent (KBM_1003, Shin-Etsu Chemical Co., Ltd.) having a bur group is added to methanol so that the solid concentration without hydrolysis is 2%.
- An optically anisotropic material was obtained in the same manner as in Example 6 except that the silane coupling agent methanol solution obtained by dissolution was used.
- a trimethoxysilane-based coupling agent (KBM_903, Shin-Etsu Chemical Co., Ltd.) having an amino group is added to methanol so that the solid content concentration without hydrolysis is 2%.
- Silane coupling agent methanol solution obtained by dissolution An optically anisotropic material was obtained by the same operation as in Example 7 except that was used.
- a trimethoxysilane coupling agent (KBM_ 5103, Shin-Etsu Chemical Co., Ltd.) having a tali-oxy group is used so that the solid content concentration without hydrolysis is 2%.
- An optically anisotropic material was obtained in the same manner as in Example 8, except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- trimethoxysilane coupling agent KBM-5103, Shin-Etsu Chemical Co., Ltd.
- tali-oxy group 2% solids without hydrolysis.
- An optically anisotropic material was obtained in the same manner as in Example 9, except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- the trimethoxysilane coupling agent (KBM-503, Shin-Etsu Chemical Co., Ltd.) having a methacryloxy group should have a solid content concentration of 2% without hydrolysis.
- An optically anisotropic material was obtained by the same operation as in Example 10, except that a silane coupling agent methanol solution obtained by dissolving in methanol was used.
- a trimethoxysilane-based coupling agent (KBM_903, Shin-Etsu Chemical Co., Ltd.) having an amino group is added to methanol so that the solid content concentration without hydrolysis is 2%.
- An optically anisotropic material was obtained in the same manner as in Example 11 except that the silane coupling agent methanol solution obtained by dissolution was used.
- An optically anisotropic material was obtained by the same operation as in Example 1 except that the surface treatment operation with the hydrolyzate of the coupling agent was omitted.
- Comparative Example 13 An optically anisotropic material was obtained by the same operation as in Example 6 except that the surface treatment operation with the hydrolyzate of the coupling agent was omitted.
- the adhesion of the optically anisotropic liquid crystal layer to the base plate and the liquid crystal alignment (horizontal (homogeneous) alignment) state of the optically anisotropic liquid crystal layer were evaluated by visual observation.
- the obtained homogeneously oriented liquid crystal optically anisotropic film sample was sandwiched between two crossed nicols of polarizing plate so as to form an angle of 45 ° with respect to the optical axis of the polarizing plate. Observe while tilting the film.
- the liquid crystal film sample has a phase delay, light transmission is observed.
- the retardation value of the liquid crystal film is reduced to the same level on the left and right, so that the change (decrease) in the transmitted light is observed to the same level
- a horizontally oriented optically anisotropic material sample was sandwiched between two crossed Nicols polarizing plates and observed from the front to evaluate the ability to observe uniform light transmission. The case where uniform transmission of light was observed was judged as “good”, and the case where it was not uniform was judged as “bad”. The case where the alignment unevenness was observed but there was no practical problem was determined as “ ⁇ ”. [table 1]
- the glass substrate has good adhesion and liquid crystal alignment when surface treatment is performed with a hydrolyzate of a silane coupling agent having an attaryloxy group, methacryloxy group, mercapto group or epoxy group.
- a hydrolyzate of a silane coupling agent having an attaryloxy group, methacryloxy group, mercapto group or epoxy group was realized.
- it has a bur group or an amino group
- the Keny TAC substrate exhibits good adhesion and a liquid crystal alignment state. Realized.
- the optically anisotropic material when the optically anisotropic material is produced, the hydrolyzate of the alkoxysilane compound is coated on the substrate.
- an optically anisotropic liquid crystal layer can be formed without alignment unevenness. Therefore, the optically anisotropic material can be preferably used as a retardation film, a viewing angle compensation film, a color compensation film, or an elliptically polarizing film by itself or in combination with other films, and is also useful for liquid crystal display devices. It is.
Abstract
Description
Claims
Priority Applications (4)
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PCT/JP2005/009620 WO2006126264A1 (ja) | 2005-05-26 | 2005-05-26 | 光学異方性材料の製造方法 |
CN2005800499131A CN101185011B (zh) | 2005-05-26 | 2005-05-26 | 光学各向异性材料的制造方法 |
EP05743618A EP1884807A1 (en) | 2005-05-26 | 2005-05-26 | Method for producing optically anisotropic material |
US11/918,731 US20090074990A1 (en) | 2005-05-26 | 2005-05-26 | Method for manufacturing optically anisotropic material |
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PCT/JP2005/009620 WO2006126264A1 (ja) | 2005-05-26 | 2005-05-26 | 光学異方性材料の製造方法 |
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US (1) | US20090074990A1 (ja) |
EP (1) | EP1884807A1 (ja) |
CN (1) | CN101185011B (ja) |
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Cited By (1)
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JP2013152439A (ja) * | 2011-12-26 | 2013-08-08 | Asahi Glass Co Ltd | 液晶配向膜およびその製造方法ならびに液晶配向膜を用いた光学素子および光記録媒体処理装置 |
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CA2707003C (en) * | 2007-11-28 | 2016-04-26 | Uni-Charm Corporation | Absorbent wearing article |
JP5493629B2 (ja) * | 2008-11-07 | 2014-05-14 | Jnc株式会社 | 重合性液晶組成物 |
JP5341643B2 (ja) * | 2009-07-08 | 2013-11-13 | 株式会社ジャパンディスプレイ | 液晶表示装置、および液晶表示装置の製造方法 |
CN116560142A (zh) * | 2023-03-13 | 2023-08-08 | 成都瑞波科材料科技有限公司 | 一种液晶配向膜、配向膜制备方法以及液晶显示面板 |
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- 2005-05-26 US US11/918,731 patent/US20090074990A1/en not_active Abandoned
- 2005-05-26 WO PCT/JP2005/009620 patent/WO2006126264A1/ja not_active Application Discontinuation
- 2005-05-26 EP EP05743618A patent/EP1884807A1/en not_active Withdrawn
- 2005-05-26 CN CN2005800499131A patent/CN101185011B/zh active Active
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US20090074990A1 (en) | 2009-03-19 |
EP1884807A1 (en) | 2008-02-06 |
CN101185011B (zh) | 2010-12-08 |
CN101185011A (zh) | 2008-05-21 |
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