WO2006112014A1 - 偏光板 - Google Patents
偏光板 Download PDFInfo
- Publication number
- WO2006112014A1 WO2006112014A1 PCT/JP2005/007205 JP2005007205W WO2006112014A1 WO 2006112014 A1 WO2006112014 A1 WO 2006112014A1 JP 2005007205 W JP2005007205 W JP 2005007205W WO 2006112014 A1 WO2006112014 A1 WO 2006112014A1
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- WO
- WIPO (PCT)
- Prior art keywords
- group
- coupling agent
- polarizing plate
- silane coupling
- polarizer
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- 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
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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
- G02F1/133528—Polarisers
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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
- 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
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/031—Polarizer or dye
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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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
Definitions
- the present invention relates to a polarizing plate.
- Polarizers are used in optical elements such as liquid crystal display elements, organic EL display elements, and glasses.
- a polarizing plate a uniaxially stretched film of polyvinyl alcohol-based resin is dyed with iodine as a polarizer.
- iodine a polarizer that is dyed with iodine as a polarizer.
- a film bonded with an adhesive is used.
- the protective film a cellulose acetate-based resin film (TAC film) excellent in optical transparency is used, and as the adhesive, both the polarizer and the protective film are hydrophilic. Considering this, a hydrophilic material is used.
- the polarizer, adhesive, and protective film are also hydrophilic and misaligned.
- Deformation is likely to occur at high temperatures and high humidity.
- the thickness of the protective film is increased to 80 m or more.
- the thickness of the protective film is 80 m or more, the demand cannot be met if the thickness of the protective film is 40 ⁇ m or less due to the recent thin film of optical elements!
- a photocurable composition comprising an ethylene acrylate monomer / maleic anhydride copolymer and a silane coupling agent.
- the product is coated on the polarizer, it is cured by irradiating with ultraviolet rays (Patent Document 1), (0 silicate oligomer that is a hydrolyzed condensate of tetraalkoxysilane, (ii) acrylic resin, (m )
- Patent Document 2 Applying a blend of a silane coupling agent to a polarizer and curing it by heating
- Patent Document 2 prevents the deterioration of performance at high temperatures and high humidity. In other words, the lamination of the protective film is omitted, and the thickness of the polarizing plate itself is reduced.
- Patent Document 1 Japanese Patent Application Laid-Open No. 9 159828
- Patent Document 2 JP-A-10-138382
- Patent Document 3 Japanese Patent Laid-Open No. 11-295522
- the conventional polarizing plate still has insufficient adhesion of the protective film
- the embodiment in which the undercoat layer is provided has a problem in that it is a solvent system in which the number of steps increases and generation of iodine ions is a concern.
- an object of the present invention is to provide a polarizing plate in which the optical characteristics of the polarizer are stable against the influence of moisture or the like that increases the adhesion between the polarizer and the protective film.
- the present inventors achieve the above-mentioned object by forming a protective film using a curable composition comprising a specific polymerizable compound and a hydrolyzate of a silane coupling agent. I found out that I could do it.
- the present invention relates to a polarizing plate in which a protective film formed by curing an energy beam curable composition is formed on at least one surface of a polarizer.
- an energy beam polymerizable compound having a bridged hydrocarbon group, a bisphenol group, a neopentyldaricol group, a trimethylol-propyl pan group or a pentaerythritol group, and
- the present invention provides a liquid crystal display element in which the polarizing plate is provided on at least one side of the liquid crystal panel.
- a protective film formed using a curable composition comprising a specific polymerizable compound and a hydrolyzate of a silane coupling agent is provided on the polarizer. Therefore, even when this protective film is formed as a thin film of 40 m or less, the moisture resistance and heat resistance are sufficiently improved, and color loss and deformation of the polarizer due to external moisture etc. are prevented. As a result, the optical performance and shape become stable. Further, it is possible to use this protective film as a support for the polarizer.
- FIG. 1 is a schematic cross-sectional view of a liquid crystal display element to which a polarizing plate of the present invention is applied.
- the polarizing plate of the present invention has a protective film formed on at least one surface of a polarizer.
- This protective film cures an energy ray-curable composition containing (1) an energy ray-polymerizable compound and (2) a hydrolyzate of a silane coupling agent with energy rays such as ultraviolet rays and electron beams.
- This (1) energy beam polymerizable compound includes (1-a) a compound having a bridged hydrocarbon group, (1-b) a compound having a bisphenol group, (1-c One or a plurality of compounds are selected from a compound having a neopentyl tilalicol group, a compound having a (1-d) trimethylolpropane group, and a compound having a (1-e) pentaerythritol group. like this
- a specific energy beam polymerizable compound it is possible to prevent the polarizing plate from being deteriorated in optical performance such as color loss.
- the bridged hydrocarbon group is preferably a dicyclopental group or a dipentapente pentene.
- Diyl groups can be mentioned.
- Other examples include isoborn groups.
- the (meth) acryloyl group is —0 (CH 2 CH 2 O) with respect to the bridged hydrocarbon group.
- n 2 2 m 3 2 m may be combined.
- n and m are each an integer of 1 10.
- examples of the structural formula of the energy beam polymerizable compound having a bridged hydrocarbon group include the following formulas (1) to (3).
- R is a hydrogen atom or a methyl group
- X is O 2, 1 0 (CH 3)
- n is an integer from 1 to 10, respectively.
- the energy ray-polymerizable compound having a bridged hydrocarbon group include dicyclopentatalacrylate (FA-513A, Hitachi Chemical), dicyclopentamethacrylate (FA-513M, Hitachi Chemical). ), Dicyclopentyl acrylate (FA—511A, Hitachi Chemical), dicyclopentyl oxychetyl acrylate (FA—512A, Hitachi Chemical), dicyclopentyl oxychetyl methacrylate (FA—512M, Hitachi Chemical).
- Preferable examples include bisphenol A type group or bisphenol F type group.
- the main part contributing to the polymerization of the energy beam polymerizable compound having a bisphenol group is the same as the energy beam polymerizable compound having the (1-a) bridged hydrocarbon group described above.
- (meth) acryloyl group partially containing acryloyl group or methacryloyl group.
- (meth) acryloyl group (CH 2 CRCO 2, where R is hydrogen or methyl group)
- a (meth) acryloxy group is a bisphenol group such as —0 (CH 2 CH 2 O) —, —0 (CH (CH 2) CH 2 O) —,
- n and m are each an integer of 1 to 10.
- examples of the chemical structure of the energy beam polymerizable compound having a bisphenol group include the following formulas (4) and (5).
- R is a hydrogen atom or a methyl group
- X is ⁇ , and 10 (CH
- n and m are each an integer of 1 to 10
- energy beam polymerizable compounds having bisphenol groups include EO-modified bisphenol A diatalylate (SR-349, Sartoma Company; R-551, Nippon Kayaku), EO-modified bisphenol. F-diatalylate (R-712, Nippon Kayaku), epoxy-modified bisphenol A dimetatalylate (epoxy ester 3002M, Kyoeisha Chemical), epoxy-modified bisphenol A acrylate (epoxyester 3002A, Kyoeisha Chemical), diglycidyl a Examples thereof include telluric-modified bisphenol A dimethacrylate (epoxy ester 3000M, Kyoeisha Chemical), diglycidyl ether-modified bisphenol A diatalylate (epoxy ester 3000A, Kyoeisha Chemical), and the like.
- the main part contributing to the polymerization of the compounds (1-c) to (: 1-e) includes the above-mentioned (1-a) energy beam polymerizable compound having a bridged hydrocarbon group.
- (1-a) energy beam polymerizable compound having a bridged hydrocarbon group As well as (meth) acryloyl group partially containing acryloyl group or methacryloyl group.
- R hydrogen or a methyl group
- R is linked to a neopentyldaricol group, trimethylolpropane group or pentaerythritol group via oxygen (O) (ie a (meth) acryloxy group).
- O oxygen
- n and m are 1 to 10
- a (meth) acryloyl group is —0 (CH 2 C 2 C) with respect to a neopentyl dallicol group, trimethylol propane group or pentaerythritol group.
- H O) — may be linked via
- n and m are each an integer of 1 to 10.
- Preferable examples of the energy beam polymerizable compound having (1-d) trimethylolpropane group include the following formulas (12) and (13).
- Preferable examples of the energy ray polymerizable compound having (1-e) pentaerythritol group include the following formulas (14) and (15).
- the energy beam polymerizable compound one type of compound selected from the above (1-a) to (: 1-e) may be used, and a plurality of types may be used. Use it together.
- the energy ray-curable composition may include, if necessary, the above-mentioned energy-line polymerizable compound (1-a) to (: 1-e).
- other energy beam polymerizable compounds can be included. Examples of such energy beam polymerizable compounds include ethylenically unsaturated monomers.
- any one of the energy beam polymerizable compounds other than (1-a) to (: 1-e) is a polyfunctional compound (for example, in one molecule). It is preferable to use those having two or more (meth) acryloyl groups.
- the amount of the energy beam polymerizable compound other than (la) to (le) is preferably 80% by weight or less in the energy beam curable composition, although it depends on the type. More preferably, it is 40% by weight or less. If the amount is too large, the relative content of (1-a) to (: 1-e) force is too low, and there is a concern that the effect of the present invention cannot be obtained.
- R 1 represents an organic group having an alkyl group having 1 to 10 carbon atoms, an alkenyl group, a (meth) atarioxy group, an amino group, or a mercapto group.
- examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, a decyl group, and a cyclohexyl group.
- the alkenyl group includes a bur group, There are styryl group, aryl group, 9-decenyl group, p-vinylbenzyl group, etc.
- organic groups having (meth) atarioxy group y-methacryloxypropyl group, ⁇ -acryloxypropyl group, etc.
- organic group having an amino group include a ⁇ -aminopropyl group, (j8-aminoethyl) - ⁇ -aminopropyl group
- the organic group having a mercapto group includes ⁇ -mercaptopropyl group, ⁇ - Mercaptomethyl phenethyl group and the like.
- organic compounds having a bur group, a styryl group, a methacryloxy group, an attaryloxy group, an amino group, and a mercapto group are also preferable in terms of improving the adhesion.
- R 2 represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkyl group, an aryl group, an alkoxyalkyl group or an acyl group. Examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a hexyl group, a phenyl group, an isopropyl group, a methoxyethyl group, and a acetyl group.
- a represents an integer of 1 to 3.
- ⁇ -acryloxypropyltrimethoxysilane ⁇ -acryloyloxypropyltriethoxysilane, etc. as those having an attaoxy group
- examples of those having an amino group include ⁇ -aminopropyltrimethoxysilane, y-aminopropyltriethoxysilane, N— (
- Examples of those having a mercapto group include ⁇ -mercaptopropyltrimethoxysilane and ⁇ -mercaptopropyltriethoxysilane.
- Silane, butylmethyldiisopropenoxysilane and the like, and those having a methacryloxy group include ⁇ -methacryloxypropylmethyldimethoxysilane,
- Examples of those having an oxy-oxy group include ⁇ acryloxypropylmethyldimethoxysilane ,
- Examples of those having a mercapto group include ⁇ -mercaptopropylmethyldimethoxysilane and ⁇ -mercaptopropylmethyljetoxysilane.
- Silane compounds can be used alone or in admixture of two or more.
- Tetraalkoxysilane does not have a functional group such as an alkenyl group, a methacryloxy group, or an alicyclic group, and does not function as a coupling agent. Therefore, a silane coupling agent used as a hydrolyzate in the present invention. Nana.
- the hydrolysis of the silane coupling agent is preferably performed using boric acid water.
- boric acid water By hydrolyzing with boric acid water, the adhesion of the protective film to the optical element can be remarkably increased.
- the adhesion of the protective film cannot be sufficiently increased, and the problem of color loss due to external moisture, etc. Difficult to eliminate.
- the reason why the adhesiveness of the protective film can be improved by using boric acid water for hydrolysis of the silane coupling agent is not clear, but as described later, the polarizer is formed using boric acid. Thought about the relationship It is.
- the hydrolyzate of the silane coupling agent used for the preparation of the energy beam curable composition the silane coupling agent and boric acid water are mixed, and at 20 to 80 ° C for 1 to 12 hours. In addition, it is preferable to use a transparent liquid treatment liquid obtained by reacting for 3 to 8 hours as it is. If the reaction time of hydrolysis is too long, condensation of the hydrolyzate proceeds to form a polymer and precipitates are formed, which is not preferable because the adhesion of the protective film cannot be sufficiently increased.
- the amount of boric acid water used for hydrolysis of the silane coupling agent is 0.5 to 3 equivalents of the silane coupling agent in order to minimize the remaining amount of water after hydrolysis. It is preferable that For example, in the case of the following trialkoxysilane, since there are three reaction points, 3 mol of water is equivalent to 1 mol of the silane coupling agent.
- the concentration of boric acid in the boric acid water used for hydrolysis is 1 from the viewpoint of adhesion and moisture resistance.
- the pH during hydrolysis varies depending on the type of silane coupling agent.
- ⁇ 4-4. 5 is preferable.
- the water content of the silane coupling agent is The blending ratio of the product and the aforementioned energy beam polymerizable compound is such that the hydrolyzate of the silane coupling agent is 1 to 20 parts by weight with respect to 100 parts by weight of the energy beam polymerizable compound.
- U prefer to be. If the amount of the hydrolyzate of the silane coupling agent used is too small, the moisture resistance cannot be sufficiently improved, and if it is too much, the moisture resistance is lowered.
- an energy beam polymerization initiator can be blended with the energy beam curable composition.
- energy beam polymerization initiators include cobalt octenoate, cobalt naphthenate, manganese octenoate, manganese naphthenate, methyl ketyl peroxide, cyclohexanone peroxide, cumene hydride peroxide, benzoate.
- the amount of the energy beam polymerization initiator is not particularly limited, but the energy beam polymerizable compounds (1-a) to (: 1-e) described above and other energy beam polymerizable compounds are combined. It is preferably 0.1 to 15 parts by weight, more preferably 0.5 to L0 parts by weight, based on 100 parts by weight of the total solids content of the resin.
- the energy ray-curable composition may contain an organic solvent as necessary!
- Organic solvent include ketone solvents such as acetone, methyl ethyl ketone and cyclohexanone, and esters such as methyl acetate, ethyl acetate, butyl acetate, ethyl acetate, methoxyethyl acetate, propylene glycol monomethyl ether acetate, and ethylene glycol diacetate.
- Ether solvents such as jetyl ether, ethylene glycol dimethyl ether and dioxane, aromatic solvents such as toluene and xylene, aliphatic solvents such as pentane and hexane, methylene chloride, black benzene, black mouth form And halogen solvents such as isopropyl alcohol, butanol and the like.
- a pigment, a filler, a leveling agent, an antifoaming agent, a thermoplastic resin or the like may be added to the energy ray curable composition.
- the protective film is obtained by mixing the above-mentioned components to obtain an energy ray-curable composition, which is obtained by a known coating method such as curtain coating method, roll coating method, flow coating. Apply at least one side of the polarizer described later by the method, spray coating method, date coating method, etc., and if necessary, after evaporating and removing the organic solvent at a temperature of 40 to: LOO ° C, It can be formed by irradiating and curing electromagnetic waves such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, X rays, ⁇ rays, electron rays, proton rays, neutron rays, and the like.
- electromagnetic waves such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, X rays, ⁇ rays, electron rays, proton rays, neutron rays, and the like.
- ultraviolet rays are mainly composed of light in the wavelength range of 150 to 450 nm, and can generate chemical lamps, high-pressure mercury lamps, metal halide lamps, xenon lamps and the like.
- the thickness of the protective film is not particularly limited, but the viewpoint power of the thin film is preferably 40 ⁇ m or less, more preferably 25 ⁇ m or less. Further, it is preferably 5 ⁇ m or more from the viewpoint of preventing color loss.
- the protective film is applied directly to the polarizer and formed on a release sheet.
- the protective film is irradiated with an energy line to form a film, and the film is applied to the polarizer with a known adhesive or pressure-sensitive adhesive. It may be formed by occupying a shell.
- the polarizer is not particularly limited, and is a force capable of using a conventionally known polarizer.
- a uniaxially stretched film of polybulal alcohol-based resin is dyed with iodine. What was done can be used preferably.
- the polybulcoalcohol-based rosin is usually produced by saponifying polyacetic acid butyl obtained by polymerizing butyl acetate.
- a small amount of unsaturated carboxylic acid (not necessarily limited to this) Salt, ester, amide, nitrile, etc.), olefins, vinyl ethers, unsaturated sulfonates, and the like, which may be copolymerized with butyl acetate.
- Average saponification degree of the poly Bulle alcohol ⁇ is preferably 85 to: LOO mol 0/0, more preferably 98 to: LOO mol% is practical.
- any average degree of polymerization of polybulal alcohol-based resin can be used.
- polyalcohol-based resin is mixed with water, an organic solvent (DMSO, glycerin and other polyhydric alcohols).
- DMSO organic solvent
- glycerin and other polyhydric alcohols organic solvent
- amines such as ethylenediamine
- a mixed solvent of these and an organic solvent moisture of about 5 to 30% by weight
- a stock solution dissolved at about 5 to 20% by weight is formed into a film, and
- B) The film is stretched while being immersed in an iodine solution or a dichroic dye solution.
- a method for forming a polyvinyl alcohol-based resin it can be formed by a known method such as a casting method, an extrusion method, or a gel film forming method.
- the polybulal alcohol-based resin film formed is preferably stretched in a uniaxial direction at a temperature of 40 to 170 ° C, 3 to 10 times, preferably 3.5. It is desirable to extend it up to 6 times. At this time, the film may be slightly stretched in the direction perpendicular to the above (stretching to prevent shrinkage in the width direction or more).
- Dyeing of the formed polyvinyl alcohol-based resin film is performed by bringing the film into contact with an iodine solution or a liquid containing a dichroic dye.
- an aqueous solution of iodine-potassium iodide is used.
- the concentration of iodine is 0.1 to 2 gZL
- the concentration of potassium iodide is 10 to 50 gZL
- the weight ratio of iodine Z potassium iodide is 20 to: LOO Is appropriate.
- the dyeing time is practically 30 to 500 seconds.
- the temperature of the dyeing bath is preferably 5 to 50 ° C.
- a small amount of an organic solvent compatible with water may be contained.
- any means such as dipping, coating, spraying, etc. can be applied.
- the boron compound treatment for the dyed polyvinyl alcohol resin film is carried out by adding an aqueous solution of a boron compound such as boric acid or borax or a water-containing organic solvent solution (about 0.5 to 2 mol ZL) to a small amount. What is necessary is just to make it contact by means, such as immersion, application
- a boron compound such as boric acid or borax or a water-containing organic solvent solution (about 0.5 to 2 mol ZL)
- the polarizing plate of the present invention can be produced by forming a protective film on at least one surface of a polarizer as described above.
- a conventional TAC film may be bonded to one or both surfaces of the polarizing plate of the present invention with an adhesive within a range not impairing the effects of the present invention, and a known transparent film may be used as necessary.
- a pressure-sensitive adhesive layer may be provided by a conventional method.
- acrylic acid esters such as butyl acrylate, ethyl acrylate, methyl acrylate, 2-ethylhexyl acrylate, acrylic acid, maleic acid, itaconic acid, methacrylic acid, Polarized light of a polarizer is mainly composed of a copolymer of a monoolefin carboxylic acid such as crotonic acid (including those containing a butyl monomer such as acrylic-tolyl, butyl acetate, and styrene). This is particularly preferable because the properties are not impaired.
- a pressure-sensitive adhesive having transparency for example, a polybule ether type rubber-based adhesive or the like can be used.
- polarizing plate of the present invention functional layers such as an antiglare layer, a hard coat layer, an antireflection layer, a half reflection layer, a reflective layer, a phosphorescent layer, a light diffusing layer, and an electoluminescence layer are included as necessary.
- One or more layers may be laminated with a pressure-sensitive adhesive or an adhesive.
- the polarizing plate of the present invention is a liquid crystal panel having a conventionally known structure, a polarizing plate to be attached to at least one surface of a display panel such as an organic EL panel, or glasses such as sunglasses or eyesight correction glasses. It can be preferably applied as a polarizing plate to be attached to at least one side of the lens for use.
- a polarizing plate composed of a polarizer 2 and a protective film 3 is provided on one surface of a liquid crystal panel 1.
- the optical plate 4 is laminated on the opposite side of the protective film 3 with ⁇ 2, 2 phase difference film 5 and ⁇ 4, 4 phase difference film 6 through the adhesive layer 7, and the whole laminate is adhered with the adhesive layer 8.
- the viewing angle is improved with the ⁇ 2 phase difference film 13 and the ⁇ 4 phase difference film 14 on one side of the polarizing plate 12 provided with the protective film 11 on both sides of the polarizer 10.
- iodine Motosome Iroeki iodine Z potassium iodide Z borate Z Jun Dyeing was carried out by immersion in water (0.2 g / 30 g / 30 g / lL) at 35 ° C. for 4 minutes.
- the silane coupling agent is hydrolyzed by stirring at 60 ° C for 6 hours with an equivalent amount of water using 3% boric acid water, and mixed with energy ray polymerizable compound and stirred.
- a line curable composition was prepared.
- This energy ray-curable composition was applied to both sides of the polarizer obtained in (1) so as to have a thickness of 20 ⁇ m, and ultraviolet light (400 mj / cm 2) with an accumulated light amount by a metal nitride lamp.
- a polarizing plate having a protective film formed on the polarizer was obtained by curing the coating film by irradiation with a wavelength of 365 nm.
- a cross cut test was performed in accordance with JIS K5400.
- the protective film is cut in a grid pattern with a cutter by a lmm in length and width, and JIS depending on the condition of the cut.
- Example Example Example Example ⁇ Example Curable composition composition (parts by weight) ⁇ 2 3 4 5
- compositions of curable compositions 1 1 1 2 1 3 1 4 Polymerizable E 0 Modified Bisph: ./; Le A. Rate 1) 50
- y-Ami, P-Pilt is a hydrolyzate of oxysilane 8)
- the addition amount of the hydrolyzate of the silane coupling agent in the energy beam curable composition is 1 to 20 parts by weight with respect to 100 parts by weight of the energy beam polymerizable compound.
- the content is 1 to 5 parts by weight, it is possible to suppress color loss due to edge force while suppressing deterioration of transmittance and polarization degree after the aging test.
- the effect of adding the hydrolyzate of this silane coupling agent can be obtained even if the type is changed as long as a specific polymerizable compound is used (Examples 6, 10 to 14).
- the polarizer is protected from the influence of external moisture, etc., and can be polarized even in a high temperature and high humidity environment. Performance can be maintained in good condition. Therefore, it is useful in various optical devices using polarizing plates, including liquid crystal display elements.
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- Crystallography & Structural Chemistry (AREA)
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2005800501235A CN101198890B (zh) | 2005-04-14 | 2005-04-14 | 偏光板 |
US11/887,725 US20090269514A1 (en) | 2005-04-14 | 2005-04-14 | Polarizing Plate |
PCT/JP2005/007205 WO2006112014A1 (ja) | 2005-04-14 | 2005-04-14 | 偏光板 |
Applications Claiming Priority (1)
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PCT/JP2005/007205 WO2006112014A1 (ja) | 2005-04-14 | 2005-04-14 | 偏光板 |
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WO2006112014A1 true WO2006112014A1 (ja) | 2006-10-26 |
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CN (1) | CN101198890B (ja) |
WO (1) | WO2006112014A1 (ja) |
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US8194210B2 (en) * | 2006-10-26 | 2012-06-05 | Fujifilm Corporation | Polarizing plate protective film, polarizing plate and liquid crystal display device |
KR101648243B1 (ko) | 2013-06-27 | 2016-08-12 | 제일모직주식회사 | 폴리엔 편광자, 이의 제조방법, 이를 포함하는 편광판 및 광학표시장치 |
WO2016003107A1 (ko) * | 2014-06-30 | 2016-01-07 | 주식회사 엘지화학 | 편광판의 제조방법 및 편광판 |
Citations (1)
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JP2005010329A (ja) * | 2003-06-18 | 2005-01-13 | Sony Chem Corp | 偏光板及び液晶表示素子 |
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JPH05202146A (ja) * | 1991-12-27 | 1993-08-10 | I C I Japan Kk | 光硬化性樹脂組成物 |
TWI268371B (en) * | 2001-12-21 | 2006-12-11 | Sony Chemicals & Information Device Corp | Polarizing plate which has a thin protective film formed at least one surface of a polarizer |
JP4306269B2 (ja) * | 2003-02-12 | 2009-07-29 | 住友化学株式会社 | 偏光板、その製造方法、光学部材及び液晶表示装置 |
TW200428040A (en) * | 2003-03-31 | 2004-12-16 | Sumitomo Chemical Co | Polarizer and method for producing the polarizer |
-
2005
- 2005-04-14 US US11/887,725 patent/US20090269514A1/en not_active Abandoned
- 2005-04-14 CN CN2005800501235A patent/CN101198890B/zh active Active
- 2005-04-14 WO PCT/JP2005/007205 patent/WO2006112014A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005010329A (ja) * | 2003-06-18 | 2005-01-13 | Sony Chem Corp | 偏光板及び液晶表示素子 |
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Publication number | Publication date |
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CN101198890B (zh) | 2010-12-01 |
CN101198890A (zh) | 2008-06-11 |
US20090269514A1 (en) | 2009-10-29 |
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