TW200900761A - Polarizing plate, optical film and image display - Google Patents

Abstract

A polarizing plate of the present invention comprises a polarizer; an adhesive layer; and a transparent protective film bonded to at least one side of the polarizer with the adhesive layer interposed there between, wherein the adhesive layer is formed from an active energy ray curing adhesive containing at least one curable component, and the adhesive layer has a glass transition temperature (Tg) of 60 DEG C. or more, and a thickness of 0.01 mum to 7 mum. The polarizing plate has sufficient durability in a severe environment at high temperature and high humidity.

Description

200900761 IX. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a polarizing plate. The polarizing plate can be formed as a liquid crystal display (LCD), an organic EL (electroluminescence) display device, or a CRT (Cathode Ray Tude), either alone or as an optical film laminated thereon. , j>dp (Plasma Display Panel, plasma display) and other image display devices. [Prior Art] In watches, mobile phones, PDPs, notebook computers, monitors for personal computers, DVDs (digital versatile discs), TVs (TVs), etc., liquid crystal display devices The market is starting to rush. The liquid crystal display device is a device for visualizing the polarization state generated by the conversion of the liquid crystal, and a polarizer is used in view of the display principle. In particular, in applications such as TVs, high brightness, high contrast, and wide viewing angle are increasingly required, and high transmittance, high polarization, high color reproducibility, and the like are increasingly required for polarizing plates. As the polarizer, an iodine-based polarizer having a structure in which iodine is adsorbed and stretched in polyvinyl alcohol has high transmittance and high degree of polarization, and is widely used as a most commonly used polarizer. In general, a polarizing plate is used for a transparent protective film by using a so-called water-based adhesive formed by dissolving a polyvinyl alcohol-based material in water on both surfaces of a polarizer (Patent Document 1 and Patent Document 2). As the transparent protective oxime, triethyl sulfonated cellulose having a high moisture permeability is used. However, as described above, in the case of manufacturing a polarizing plate, when a water-based adhesive such as a polyvinyl alcohol-based adhesive is used, after bonding the polarizer and the protective film of 129667.doc 200900761, it is necessary to #π Bu has a drying step. The drying step existing in the manufacturing steps such as the polarizing plate does not (4) improve the productivity of the polarizing plate.

In the case of using a water-based adhesive (so-called wet laminate), the water content of the polarizer is not increased relatively for the adhesion of the contact agent to the carrier (the moisture content of the ten-polarizer is 3 G%). On the left and right sides, it is impossible to obtain a polarizing plate which is formed by a water-based connection agent and has good adhesion. "The polarizing plate obtained in this way has a problem of large dimensional change in a high-temperature or high-temperature and high-humidity environment. On the other hand, by suppressing the above dimensional change, the moisture content of the polarizer can be lowered, or the use of low moisture permeability can be reduced. The transparent protective tape. However, when a polarizing film and a transparent protective film are bonded by using a water-based adhesive, the efficiency of the drying step is lowered, or the polarizing property is lowered, or the appearance is poor, and a substantially useful polarizing plate cannot be obtained. In particular, as in the case of τν, in recent years, as image display devices tend to be larger, it is also important to consider the enlargement of polarizing plates in terms of productivity and cost (cost ratio, increase in number). However, in the polarizing plate using the above-described water-based adhesive, there is a problem in that the size of the polarizing plate changes due to the heat of the backlight, which becomes a spot such that black appears in one part of the entire screen. The so-called light leakage (light spot) such as whitish becomes remarkable. For the above reasons, it is proposed to use active energy ray hardening type. (In particular, an ultraviolet curing type) an adhesive instead of a water-based adhesive. For example, as an adhesive, it is proposed to be used in an acrylic oligomer such as epoxy acrylate, acryl phthalate or polyester acrylate, or acrylic acid. The ultraviolet-curable adhesive of the acrylic-based monomer is a diluent (Patent Document 3). 129667.doc 200900761 Moreover, the durability required for the polarizing plate can be made strict, and it is required to be in a harsh environment of high humidity and high temperature. However, the above-mentioned polarizing plate cannot satisfy the durability in the above-mentioned harsh environment. [Patent Document 1] Japanese Patent Laid-Open No. Hei. No. 2006-220732 (Patent Document 2) Japanese Patent Laid-Open No. Hei 2-19624627 [Patent Document 3] Japanese Laid-Open Patent Publication No. SHO 61-246719 [Draft of the Invention] [Problems to be Solved by the Invention] ^ f An object of the present invention is to provide a polarizing plate which can satisfy the high humidity and high temperature. Further, the object of the present invention is to provide an optical film in which the above polarizing plate is laminated, and to provide a polarizing plate and an optical film. The present inventors have made intensive studies to solve the above problems, and as a result, have found that the above object can be attained by the polarizing plate described below, and the present invention has been completed. A polarizing plate comprising a transparent protective film on at least one surface of a polarizer via an adhesive layer, wherein the adhesive layer is formed of an active energy ray-curable adhesive containing at least one hardening component, and then The Tg of the agent layer is 601: or more, and the thickness of the subsequent layer is 0.01 to 7 μη. In the above polarizing plate, it is preferred to define Tg (〇C) of the adhesive layer as A, and an adhesive. When the thickness (μιη) of the layer is defined as b, the numerical calculation is satisfied. 129667.doc 200900761 Formula (1): Α-12χΒ>58. In the above polarizing plate, it is preferred that the adhesive layer has a gel fraction of 5 〇 or more by weight. In the above polarizing plate, it is preferred that the curable component is a compound having a (meth) acryl. As the curable component of the above polarizing plate, it is preferred to use a hydrogen atom or a methyl group represented by the formula (1): CHfCdO-CONR^xRi, and a hydrogen atom or a hydroxy group, a sulfhydryl group, an amine group or a tetra group. The alkyl group of the ammonium group is a linear or branched alkyl group of 1 to 4, and the r3 represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms. Among them, the case where R2 and R3 are both hydrogen atoms is not included. Alternatively, R3 is bonded to form an N-substituted amarylamine monomer represented by a 5-membered ring or a 6-membered ring which may contain an oxygen atom. Preferably, the above N. substituted amine-based monomer is selected from the group consisting of N_M ethyl propylene amine, N-hydroxydecyl acrylamide, N-isopropyl acrylamide, and glacial decyl morpholine. At least "heavy. Particularly preferably, the hydrazine-substituted amide-based monomer contains N-hydroxyethyl acrylamide and N-propenyl morpholine. When hydrazine hydroxyethyl propyl decylamine and N-propylene decylmorpholine are used in combination, it is preferred that the ratio of N-hydroxyethyl acrylamide is 4% by weight or more based on the total amount. Further, in the N-substituted amine-based monomer, a monofunctional (meth)acrylate having an aromatic ring and a hydroxyl group may be used in combination as a curable component. In the above polarizing plate, it is preferred that the active energy ray-curable adhesive is an electron beam curing type adhesive. In the above polarizing plate, it is preferred that the transparent protective film be at least one selected from the group consisting of a cellulose resin, a polycarbonate resin, a cyclic polyolefin resin, and a (meth)acrylic acid 129667.doc 200900761 resin. The present invention further relates to an optical film characterized in that at least one of the above polarizing plates is laminated. The present invention further relates to an image display device characterized by using the above polarizing plate or the above optical film. [Effects of the Invention] In the polarizing plate of the present invention, an active energy ray-curable adhesive is used as an adhesive for bonding the polarizing plate and the transparent protective film. The active energy ray-hardening adhesive has higher durability than the aqueous adhesive. Further, in the polarizing plate of the present invention, as the active energy ray-curable adhesive, the Tg of the adhesive layer formed therefrom is 60. (The above active energy ray-curable adhesive> and the thickness of the adhesive layer is controlled to 〇〇1 to 7 μηι. As described above, in the polarizing plate of the present invention, the adhesive layer is made 60 ° C The above-mentioned Tg active energy ray-curable adhesive, and controlling the thickness of the adhesive layer to the above range, thereby satisfying the durability in a harsh environment of high humidity and high temperature. In particular, the Tg of the adhesive layer (r) is defined as a, and when the thickness (μηι) of the adhesive layer is defined as b, the above durability is better when the numerical formula (1): Α-12χΒ>58 is satisfied. The active energy ray-curable adhesive is preferably an electron beam hardening type adhesive. The electron ray hardening grade adhesive is more productive than the ultraviolet curing adhesive, and can be used for bonding polarizers and The use of an electron beam (dry dry laminated) towel in the hardening method of the transparent protective enamel does not require a heating step in the ultraviolet curing method, so that the productivity can be greatly improved. x can be cured by using an electron beam 129667.d Oc 200900761 is used as a coating, and the durability of the polarizing plate is further improved as compared with the ultraviolet curing type adhesive. Further, a compound having a (meth)acryl fluorenyl group is used, in particular, the above N-substituted amide-based monomer is used. When the curable component of the active energy ray-curable adhesive is used, the curable component is preferable in terms of durability, and is particularly preferably used as an electron beam-curable adhesive. For example, when a polarizer having a low water content is used, or When a material having a low moisture permeability is used as a transparent protective film, the electron beam hardening type adhesive exhibits good adhesion to the above, and as a result, a polarizing plate having good dimensional stability is obtained. In the case of a component, since a polarizing plate having a small dimensional change can be produced, it is possible to easily cope with an increase in size of the polarizing plate, and it is possible to suppress production cost from the viewpoint of yield and number of take-up. Further, since it is known in the present invention Since the polarizing plate has good dimensional stability, it is possible to suppress the occurrence of flares in the image display device due to external heat of the backlight. [Embodiment] Ming polarizing plate, at least one surface of the polarizer, a transparent protective film through the adhesive layer, when forming the adhesive layer, using the active energy ray curable adhesive. The active energy ray-curable adhesive contains at least one curable component. The curable component used in the active energy ray-curable adhesive is selected such that the Tg of the adhesive layer formed therefrom is 60 ° C or higher. From the viewpoint of durability, the Tg of the above-mentioned adhesive layer is more preferably 7 (TC or more, further preferably 75 ° C or more, and even more preferably 10 (TC or more, particularly preferably 疋 120 C or more. 'When the Tg of the adhesive layer is too high, the bendability of the 129667.doc 200900761 light plate is lowered. Therefore, it is preferable that the adhesive layer is 300 ° C or less, and further preferably 24 (TC or less, further Good is below 1 80 °c.

C

The curable component may, for example, be a compound having a (meth) acrylonitrile group or a compound having a vinyl group. As the curable component, either monofunctional or difunctional or more can be used. When the Tg of the adhesive layer formed of the curable component satisfies 6 〇t: or more, two or more of these curable components may be used in combination or in combination. As such a curable component, a compound having a (fluorenyl) acrylonitrile group is preferred. As the compound having a (meth) acrylonitrile group, it is preferred to use an N-substituted guanamine-based monomer. These monomers are compared to 4 in terms of f. Further, the (meth)acrylic group means an acryl group and/or a methyl propyl group. In the present case, the meaning of (meth) is the same as above. 0 N-substituted amide-based monomer is represented by the general formula (1): CH2=c(r1)_c〇nr2(r3) (R1 represents a hydrogen atom or a methyl group , r2 represents a carbon atom or a group which may have a direct bond or a bond of a carbon atom having a radical, a thiol group, an amine group or a quaternary ammonium group, and a hydrogen atom or a carbon atom number of the R3 table. A linear or branched alkyl group, wherein 'R2' R3 is not a ruthenium atom, or r2 and R3 are combined to form a 5-membered ring or a 6-membered ring which may also contain an oxygen atom. Examples of the alkyl group of the above-mentioned formula (1) in the case of the direct bond or the bond of the bond of 4 to 4 include a methyl group, an ethyl group, an isopropyl group, a t-butyl group and the like. The base group, the ethyl group and the like may have an amine group, an amine group, an amine group or the like. When m2 and R3 are bonded to each other to form a 5-membered ring or a 6-membered ring which may contain an oxygen atom, a nitrogen-containing heterocyclic ring is provided. As the miscellaneous 129667.doc 12 200900761, the rings include a lining ring, a brigade bite ring, a nb p ring, a brigade ring, and the like. Specific examples of the N-substituted amide-based monomer include N-fluorenyl (meth) acrylamide, hydrazine, fluorenyl-difluorenyl (meth) acrylamide, and N, N-di. Ethyl (meth) acrylamide, N-isopropyl acrylamide, N-butyl (meth) acrylamide, N. hexyl (meth) acrylamide, N-methylol (methyl Acrylamide, N-hydroxyethyl (meth) acrylamide, N-methylol-N-propane (decyl) acrylamide, amine methyl (meth) acrylamide, amine ethyl ( Methyl) acrylamide, hydrazine methyl (meth) acrylamide, decyl ethyl (meth) acrylamide, and the like. Further, examples of the heterocyclic ring-containing monomer having a hetero ring include, for example, N-propylene hydrazinoline, N-propyl fluorene β bottom bite, N-methyl propylene aryl base bite, N-propylene saccharide base 吼Prolane and the like. These hydrazine-substituted amide-based monomers may be used alone or in combination of two or more. Preferably, the above hydrazine-substituted amide-based monomer is hydrazine-hydroxyethyl acrylamide, hydrazine-hydroxymethyl acrylamide, hydrazine isopropyl isopropyl amide, and N-propylene hydrazinomorph. The hydrazine-substituted amide-based monomer also exhibits good adhesion to a low-moisture polarizer and a transparent protective film using a material having a low moisture permeability, but the above-exemplified monomer exhibits particularly good adhesion. . Among them, Ν-hydroxyethyl acrylamide is preferred. The above-mentioned oxime-substituted amide-based monomers may be used singly or in combination of two or more. When two or more kinds are used in combination, from the viewpoint of durability and adhesion, ruthenium-hydroxyethyl propylene oxime is preferred. A combination of an amine and a hydrazine-acryloyl morpholine. Moreover, in the case of the combination, when the ratio of Ν_hydroxyethyl acrylamide to the total amount of Ν-hydroxyethyl acrylamide and hydrazine propylene morpholine is 4 重量% or more, it is advantageous. Get good connectivity. The above is better than 129667.doc -13- 200900761, and 40 to 90% by weight, and further preferably 6 〇 to 9 〇 by weight. In addition, as the compound having an acrylonitrile group, the above-mentioned curable component may, for example, be various epoxy group (mercapto) acrylate, (meth) acrylate phthalate, or polyester (曱). Acrylate or various (fluorenyl) acrylate monomers and the like. Among them, it is preferred to use an epoxy group (mercapto) acrylate, and it is particularly preferred to use a monofunctional (meth) acrylate having an aromatic ring and a hydroxyl group. When the above-mentioned N-substituted amide-based monomer can be used in combination with the above-mentioned N-substituted amide-based monomer, the curable component can not be used alone. The monofunctional (meth) acrylate having an aromatic ring and a hydroxyl group can be used. Various monofunctional (meth) acrylates having an aromatic ring and a hydroxyl group may be used. The hydroxy group may exist as a substituent of the aromatic ring, but in the present invention, it is preferred to

The aromatic ring and the organic group of the (fluorenyl) acrylate (the group bonded to the hydrocarbon group, especially the stretching group) are present. D The above-mentioned monofunctional (meth) acrylate having an aromatic ring and a hydroxyl group may, for example, be mentioned. A reaction of a monofunctional epoxy compound having an aromatic oxime with (meth)acrylic acid. The monofunctional epoxy compound having an aromatic ring may, for example, be phenyl glycidyl ether, tert-butylphenyl glycidyl ether or phenyl glycidyl ether. Specific examples of the monocyclic (methyl) propylene vinegar having a ring and a singe can be exemplified by: 2, benzyl-3-phenoxypropyl (meth) acrylate vinegar, 2-mercapto m phenoxy propyl acrylate Base (meth) acrylate vinegar, 2-hydroxy-3-phenyl polyethylene glycol propyl (meth) acrylate, and the like. Further, a compound having a (meth)acrylic group may, for example, be a monomer. Rebellion 129667.doc 14· 200900761 The base monomer is also preferred in terms of adhesion. Examples of the carboxyl group monomer include (τ) acrylic acid, carboxyethyl (meth) acrylate, and carboxypentyl (meth) acrylate. Among them, acrylic acid is preferred. In addition to the above, the compound having a (meth) acrylonitrile group may, for example, be methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate or (meth) acrylate. An alkyl (meth)acrylate having a carbon number of from 12 to 12 such as 2-ethylhexyl ester, isooctyl (meth)acrylate, isodecyl (meth)acrylate or lauryl (meth)acrylate; (meth)acrylic acid alkoxyalkyl monomer such as methoxyethyl (meth)acrylate or ethoxyethyl methacrylate; 2-hydroxyethyl (meth) acrylate; 2-hydroxypropyl methacrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 8-hydroxyoctyl (meth) acrylate, 1 ( (meth) acrylate a hydroxyl group-containing monomer such as hydroxy sterol ester, (meth)acrylic acid 12-hydroxylauryl ester or (4-hydroxymethylcyclohexyl)-methacrylate, an acid anhydride group-containing monomer such as maleic anhydride or itaconic anhydride; Caprolactone adduct of acrylic acid; styrene sulfonic acid or allyl sulfonic acid, 2·(meth) acrylamide -2-amine-2-methylpropane a sulfonic acid group-containing monomer such as an acid, (f-) acrylamide-propane sulfonic acid, sulfopropyl (meth) acrylate, (fluorenyl) propylene decyl naphthalene sulfonic acid; 2-hydroxyethyl acrylonitrile A phosphate group-containing monomer or the like. Further, (meth)acrylamide; maleimide, N-cyclohexylmaleimide, N-phenylmaleimide, etc.; (mercapto) aminoethyl acrylate, (mercapto) propyl propyl acrylate, N, N-dimercaptoacetic acid ethyl (meth) acrylate, (butyl) butyl acetoacetate (methyl) acrylate, 3- (3 - °°°) propyl (indenyl) acrylate (meth)acrylic acid alkylaminoalkyl monomer; N-(methyl) propylene oxy ruthenium ruthenium -(indenyl) propylene-based -6-oxyl 129667.doc 15 200900761 hexamethylene succinimide, N-(fluorenyl) propylene decyloxy octamethyl succinimide, etc. A nitrogen-containing monomer such as an imide monomer. As the hardening component in the active energy ray-curable adhesive as described above, it is preferred to use an N-substituted amide-based monomer alone or a N-substituted guanamine-based monomer and a single one having an aromatic ring and a hydroxyl group. Functional (meth) acrylate. The ratio of the N-substituted amide-based monomer is preferably 40% by weight or more, more preferably 5% by weight or more, still more preferably 60% by weight or more, and further It is good that 7 〇 is more than 1% by weight, and particularly preferably 80% by weight or more. As the curable component, a difunctional or higher curable component can be used. The above-mentioned hardening component is preferably a difunctional or higher (fluorenyl) acrylate, and particularly preferably a difunctional or higher epoxy (meth) acrylate. An epoxy group (meth) acrylate of more than one 忐 is obtained by reacting a polyfunctional epoxide with (meth)acrylic acid. The polyfunctional epoxy compound can be exemplified by various methods. Examples of the polyfunctional epoxy compound include an aromatic epoxy resin, an alicyclic epoxy resin, and an aliphatic epoxy resin. Examples of the aromatic epoxy resin include bisphenol A diglycidyl ketone, phenol F-glycidyl ether, bisphenol s diglycidyl ether, and the like; Paint ring (four) grease, nail (four) paint epoxy, Yueshi 曰 I! base benzophenone benzene age with varnish resin and other varnish-type epoxy tree moon 曰, tetrahydroxyphenyl methane glycidyl ether, Tetrahydroxybenzophenone: polyfunctional epoxy resin alicyclic epoxy resin such as glycerol ether, bad oxidized polyethylene phenol, etc., chlorination of the above aromatic epoxy resin 129667.doc -16- 200900761 Epoxy resin such as a substance, a % hexane system, a cyclohexyl methyl ester system, a dicyclohexyl methyl ether system, a spiro ring system or a tricyclodecane system. The aliphatic epoxy resin may, for example, be a polyglycidol of an aliphatic polyhydric alcohol or an epoxy calcined adduct thereof. These examples include diglycidyl ether of 4-butanediol, diglycidyl ether of 1,6-hexanediol, triglycidyl ether of glycerol, triglycidyl ether of mercaptopropene , diglycidyl ether of polyethylene glycol, diglycidyl ether of propylene glycol, ethylene glycol and propylene glycol, aliphatic polyols such as ganj, or two or more kinds of alkylene oxides (epoxy A polyglycidyl ether of a polyether polyol obtained by alkane or a propylene oxide. The epoxy equivalent of the above J-oxyl resin is usually from 30 to 3,000 g/equivalent, more preferably from 50 to 1,500 g/equivalent. The epoxy (meth) acrylate of the above-mentioned one S or more is preferably an epoxy (meth) acrylate of a fat, an oxime tree, and particularly preferably an epoxy of a difunctional aliphatic epoxy resin. (Meth) acrylate. The active energy ray-curable adhesive of the present invention contains a curable component in addition to the above-mentioned forming knives, and may be added with an appropriate additive as needed. The active moon-line hardening type adhesive can be used in the form of an electron beam hardening type or an ultraviolet curing type. When the above-mentioned adhesive is used in the electron beam curing type, it is not particularly necessary to use a polymerization initiator in the above-mentioned adhesive, but a photopolymerization initiator is used when it is used in the form of an ultraviolet dimerization. The amount of the photopolymerization initiator to be used per weight of the sclerosing component is usually 1 part by weight, preferably 0.5 to 3 parts by weight. Further, as an example of the additive, the sensitizer represented by a few base compounds, which is represented by a few base compounds, is used to improve the sensitivity of the electron ray. Additives: Only the oxide compound of the film or the flue system (natural, combined =), etc., to improve mechanical strength or processability, etc.: anti-aging agent, dye, processing aid, ion-trapping tackifier, filling Agent (except metal compound filler), plasticizer, leveling agent, anti-foaming agent, antistatic agent, and the like.斗") is a light sheet formed of a polyvinyl alcohol-based resin. The alcohol-based resin is made of a dichroic material, and the polyethylene barrium biomass (typically iodine, dyed, and uniaxially stretched) Wood. The degree of polymerization of the poly-B alcohol resin of the polyethylene-based resin film is preferably 1〇〇~5_, and further 疋1400~4000. When the vocalization is too low, When a specific extension is carried out, elongation fracture is likely to occur, and when the person is gathered, when it is still too long, there is an abnormality in the elongation when it is extended, and there is a possibility that mechanical elongation may not be performed. The polyethyl alcohol resin film constituting the polarizer Any suitable method may be used to form (casting, casting, extruding) by casting or casting. The thickness of the polarizer may be appropriately set according to the purpose or use of the LCD of the polarizing plate. Usually, it is about 5 to 80 μηι. The method for producing a polarizer can be any appropriate method depending on the purpose, materials used, conditions, etc. For example, the above-mentioned polyethylene glycol can be used for the usual inclusion of swelling, color, ^ 糸树糸月曰膜- series of manufacturing steps; the side; in the joint, extension, water washing and drying steps, in the liquid of the solution used in the step S step of removing the drying step, the polyethylene is immersed in the liquid 129667.doc 200900761 = alcohol The resin film is treated, and the order, the number of times, and the presence or absence of each treatment of swelling, dyeing, crosslinking, stretching, water, and drying can be appropriately determined depending on the materials and conditions used, for example, in one step. When the processing is performed, it is also possible to perform the swelling treatment and the dyeing treatment at the same time. Further, for example, it is preferably carried out before and after the stretching treatment. Further, for example, the water washing treatment can be performed after the completion of all the treatments. It may be carried out only after the specific treatment. The swelling step is typically carried out by impregnating the above-mentioned polyethylene film into a treatment bath filled with water.

The treatment can clean the dirt or anti-caking agent on the surface of the polyvinyl alcohol-based resin film, and X can prevent the unevenness of the dyeing unevenness by swelling the poly-glycol alcohol-based coating film. In the swelling bath, glycerin or potassium is appropriately added. The temperature of the swelling and the valley is usually about 20 to 10 (10). The time for immersing in the swelling bath is usually about 0.1 to 10 minutes. The dyeing step is typically carried out by impregnating the above-mentioned polyethylene resin film into a treatment bath containing a dichroic material such as a moth. The solvent used for the dye bath solution is usually water, and an organic solvent compatible with water may be added in an appropriate amount. The dichroic substance is usually used in a proportion of 〇. Η by weight based on 100 parts by weight of the wound solvent. When a moth is used as the dichroic substance, the dye bath solution preferably contains a promoter such as an iodide. The reason is to improve the color efficiency. The auxiliary is used in a proportion of (0) by weight of the solvent, preferably 0 to 2 2 parts by weight, more preferably 2 to 1 part by weight. Specific examples of the iodide include potassium iodide, lithium iodide, sodium iodide, zinc iodide, aluminum iodide, lead iodide, copper iodide, and Wei 129667.doc • 19-200900761 钡, calcium iodide, and iodine Tin, titanium iodide, etc. The temperature of the dyeing bath is usually about 2 to 70 C, and the time of immersion in the dyeing bath is usually about 1 to 20 minutes. In the case of the further step, the above-mentioned dyed polyvinyl alcohol-based resin film is typically impregnated in a treatment bath containing a crosslinking agent. The parent agent can be any suitable crosslinking agent. Specific examples of the crosslinking agent include a boron compound such as boric acid and borax, glyoxal, glutaraldehyde, and the like: these may be used singly or in combination. The solvent used for the crosslinking bath solution is usually water or an organic solvent compatible with water in an appropriate amount. Crosslinking agent:, '4 is used for the ratio of 1~丨〇 by weight of 1 〇〇 by weight of the solvent. When the concentration of the parent agent is less than 丨 by weight, sufficient optical characteristics cannot be obtained. When the concentration of the crosslinking agent exceeds 1 part by weight, it is generated in the film at the time of stretching, and the obtained polarizing plate may cause shrinkage. The cross-linking bath solution further contains an auxiliary agent such as an idelate. The reason is that the content of the face is also the characteristics of the hook. The concentration of the auxiliary agent is preferably (10) seven parts by weight, and further preferably, it is 05 cases, and the I4 is 100%. The specific steps of the iodide and the wood color are the same. Pay 20~7〇r 士 „ 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父 父15 seconds, preferably 5 seconds to 10 minutes. The extension step can also be carried out at any stage as described above, and can be processed in the color of the color, and the concrete can be dyed after the wood color treatment. The swell treatment and the color treatment are carried out, and can be carried out simultaneously with the treatment of the hibiscus and the father. The eucalyptus can be dyed at the dyeing station. Λ ” The cumulative stretching ratio of the resin film is determined to be More than 5 times, it is usually better to double the number of steps - 5 to 6.5 times. When the rate of 129667.doc •20- 200900761 is less than 5 times, it is difficult to obtain a polarizer with high polarization. When the oxygen-breaking ratio is more than 7 times, the polyvinyl alcohol-based resin film may be easily used as a specific method of stretching. For example, in the case of a sheep using a wet extension method, the cockroach is extended to a specific multiple. As an extended oxime, a polyacetate-based resin or an organic solvent (for example, ethanol) or the like, a gluten solution can be preferably used in the hydrated glutinous agent, and a compound containing various metal salts, iodine, boron or zinc is used. Solution. In the case of the water washing step, various treatments of the polyethylene glycol ♦, =! = were carried out by subjecting the above-mentioned eucalyptus eucalyptus membrane to the treatment bath. The water washing step can be used to rinse off the excess residual water on the polyvinyl alcohol resin film. It can be pure water, or it can be broken (for example, potassium telluride, 100% of the amount). Solution. The concentration of the aqueous solution of the Weiwu is preferably (the addition of the U~10 heavy additive to the moth compound aqueous solution, the sulphate, the chlorination, etc. A, the skill is 1 second to 1 minute. The water washing step can only be carried out: 2 It may be carried out as many times as necessary. In the case of multiple implementations, it may be appropriate to adjust the amount of water contained in the water bath for each treatment. For example, the water washing step includes the implementation of the above various aspects = Potassium aqueous solution (.... weight percent m. ~ two steps, and the step of washing with pure water. Drying efficiency, also, Λ I surface modification or alcohol of polarizer, etc.). Organic solvent with compatibility (B drying step can be connected to m. - Method (such as natural drying, blast 129667.doc 21 200900761 == dry). For example, 'drying temperature when drying and drying can be obtained polarized light The moisture content of the polarizer used in the above invention is preferably 2 〇 or less by weight, more preferably 〇 15 or less by weight, and a step 1 to 15 Below weight percent. When moisture content is greater than 2〇 In the case of a percentage, it may cause a problem that the size of the obtained polarizing plate becomes σ _ 攸 攸 and the dimensional change is large toward a warm or high k to a wet environment.

The moisture content of the polarizer of the present invention can be adjusted by any appropriate method. For example, a method of controlling by adjusting the conditions of the drying step in the manufacturing steps of the polarizer can be mentioned. The moisture content of the polarizer can be determined by the following method. Namely, the polarizer was cut into a size of 100 × 100 Å, and the initial weight of the sample was measured. Next, the sample was dried at 12 (TC) for 2 hours, and the weight after drying was measured, and the water content was measured by the following formula: moisture content (% by weight) = {(initial reset - dry weight) / initial weight } X1 (10) The measurement of the amount is performed three times and the average value is obtained. As the material constituting the transparent protective film, a thermoplastic resin excellent in transparency, mechanical strength, thermal stability, water repellency, isotropy, and the like is used. Specific examples of such a thermoplastic resin include a cellulose resin such as acetamino cellulose, a resin for polyg, a (iv) wax, a barrier resin, a polysuccinic resin, a polyamide resin, and a polyfluorene resin. Imine resin, polyolefin tree glutinous (meth) acryl resin, cyclic polyolefin resin (norbornene tree sap) poly aryl resin, polystyrene resin, polyvinyl alcohol resin and these 129,667 .doc • a mixture of 22·200900761. Further, on one side of the polarizing plate, a transparent protective film is adhered via the adhesive layer, and on the other side, a (meth)acrylic acid or an amino phthalic acid vinegar system may be used. , urethane acrylate, ring A thermosetting resin such as an oxygen-based or polyfluorinated resin or an ultraviolet-curable resin is used as the transparent protective film. The transparent protective film may contain any one or more of any suitable additives. Examples of the additive include an ultraviolet absorber and an antioxidant. , lubricant, plasticizer, mold release agent, coloring preventive agent, flame retardant, nucleating agent, antistatic agent, pigment, colorant, etc. The content of the above thermoplastic resin in the transparent protective film is preferably 50. 〜100重量百分比, more preferably 5〇~99% by weight, further preferably 60~98% by weight, particularly preferably 7〇~97% by weight. When the content of the above thermoplastic resin in the transparent protective film is When the amount is 50% by weight or less, the high transparency of the thermoplastic resin may not be sufficiently exhibited. Further, as the transparent protective film, Japanese Patent Laid-Open Publication No. 2〇〇ι. 3435M (WO 01/37007) The polymer film described in the above; for example, a thermoplastic resin having a substituted (and) unsubstituted quinone imine group in the (A) side chain and a substitution in the (B) side chain and/or A resin composition of a thermoplastic resin of a non-substituted phenyl group and a nitro group. Specific examples thereof include a resin composition containing an alternating copolymer of isobutylene and N-methylmaleimide and an acrylonitrile styrene copolymer. A film formed of a mixed extrusion of a resin composition, etc., which has a small phase difference and a small photoelastic modulus, can eliminate defects such as flare caused by distortion of the polarizing plate, and Because the moisture permeability is small, the humidification durability is excellent. The thickness of the transparent protective film can be appropriately determined, but the workability and thinness of the strength or operability of 129667.doc -23· 200900761 are considered. 1~500 μηι or so, especially good is about 1~300 μπι, better θ ς and wild 疋 5~2〇〇μιη. Transparent with a vine film is especially good when the thickness is 5~150 μηη. When a transparent protective film is provided on both sides of the polarizer, a protective film formed of the same polymer material may be used on the front and back sides, and a protective film formed of a different polymer material or the like may be used.

The transparent protective film of the present invention is preferably an electron beam hardening of the present invention which is selected from the group consisting of cellulose resin, polyacrylic resin, cyclic polyolefin resin and (meth)acrylic resin. The adhesive for the polarizing plate exhibits better adhesion to the above various transparent protective labels. In particular, the adhesive for an electron beam-curable polarizing plate of the present invention exhibits good adhesion to an acrylic resin which is difficult to satisfy the adhesion. The cellulose resin is a vinegar of cellulose and fatty acid. Specific examples of such a cellulose vinegar resin include cellulose triacetate, cellulose diacetate, cellulose tripropionate, and cellulose dipropionate. Among them, cellulose triacetate is particularly preferred. There are many commercially available products of cellulose triacetate, which are advantageous in terms of availability or cost. As an example of a commercial product of cellulose triacetate, a product name "UV-50", "UV-8 (T, "SH_8〇", "TD_8〇u";,"TDTAC","me" or "kc series" manufactured by Nica a. In general, the in-plane retardation (Re) of these cellulose triacetates is almost zero, and the thickness direction The phase difference (Rih) has a thickness of about ~60 nm. Further, the cellulose resin film having a small phase difference in the thickness direction can be obtained, for example, by treating the above cellulose resin. For example, it is coated with cyclopentanone, 129667.doc •24- 200900761 Terephthalate _ et al. Polyethylene terephthalate, polypropylene, not _# material _ on the cellulose film of f pass for heating and drying ('J as 80 After heating and drying for ～15〇c for about 3 to 1 minute, the method of peeling off the base film, etc. 'dissolves norbornene-based resin, (meth)acrylic resin, etc.; 衮 _, methyl ethyl _, etc. The solution in the solvent is applied to a common cellulose tree moon membrane and dried by heating (for example, m〇t>c plus <, ', drying for about 3 to 10 minutes, followed by a method of peeling off the coating film.

Further, as the cellulose resin film having a small phase difference in the thickness direction, a fatty acid cellulose resin film in which the degree of fat substitution is controlled can be used. In the cellulose triacetate which is usually used, the degree of substitution of acetic acid is about 28 or so. It is preferred to control the degree of substitution of acetic acid to 1.8 to 2·7, thereby narrowing her. The (10) is controlled to be more than 100 parts by weight of the fatty acid fiber by adding a plasticizer such as phthalic acid, aniline or citric acid triacetate to the cellulose-substituted resin. The addition of the plain resin and the plasticizer is preferably 40 parts by weight or less, more preferably 2 parts by weight, and preferably 1 to 15 parts by weight. As a ring-shaped polysmoke resin

Bottle 1 夕 "J, a W small eneene tree Moon. The polystyrene resin is a general term for a resin obtained by polymerizing a cyclic olefin as a polymerization unit, and examples thereof include Japanese Patent Laid-Open No. 2, Japanese Patent Laid-Open No. Hei 3_14882, and Japanese Patent No. 3:122137. The resin described in the publication and the like. Specific examples thereof include a ring-opening (co)polymer of a cyclic diene, an addition polymer of a cyclic olefin, a copolymer of a cyclic olefin and ethylene, propylene, etc. (a representative copolymer), and These are modified with unsaturated m-acids or derivatives thereof = I29667.doc -25- 200900761 Random polymers, and such hydrides and the like. Specific examples of the cyclic olefin smoke include a norbornene-based monomer. There are many kinds of commercially available products of braided polystyrene resin. Specific examples include: "ZEONEX", "ZEONOR" manufactured by Nippon Co., Ltd., "ARTON" manufactured by JSR AG, "TORVUS" by TICONA, and products manufactured by Mitsui Chemicals Co., Ltd. Name "apel" As the (fluorenyl) acrylic resin, Tg (glass transition temperature) is preferably 11 5 ° C or higher, more preferably 120 ° C or higher, further preferably 125 ° C or more, especially It is preferably 130. (3 or more. The Tg is set to 115. (The above is preferable, and the polarizing plate is excellent in the heat of the polarizing plate. The upper limit of the above-mentioned (fluorenyl) acrylic resin is not particularly limited, but self-forming From the viewpoint of the nature, it is preferably 170 C or less. A film having an in-plane retardation (Re) and a thickness direction retardation (Rth) of almost zero can be formed from a (meth)acrylic resin. The resin 'may be any suitable (fluorenyl) acrylic resin insofar as it does not impair the effects of the present invention. For example, poly(meth)acrylate such as polymethyl methacrylate or methacrylate methacrylate- (Mercapto) acrylic copolymer, decyl methacrylate _(mercapto) acrylate copolymer, methyl methacrylate _ acrylate _ (meth) acrylate copolymer, (mercapto) decyl acrylate - styrene Copolymer (MS resin, etc.), a polymer having a lipid steroid hydrocarbon group (for example, methyl methacrylate - cyclohexyl methacrylate copolymer, methyl methacrylate - norbornene (fluorenyl) acrylate copolymer Preferably, the poly(meth)acrylic acid C1-6 alkyl ester such as poly(indenyl)methyl acrylate is used. More preferably, the decyl methacrylate is used as a main component (50 to 1 〇). 〇 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 129 The (曱-based) acrylic resin having a ring structure in the molecule described in the ACRYPET VH or ACRYPET VRL20A manufactured by Liyang Co., Ltd., and the intramolecular cross-linking or intramolecular High Tg obtained by cyclization reaction Methyl) acrylic resin.

As the (meth)acrylic resin, a (meth)acrylic resin having a lactone ring structure can also be used. The reason for this is that it has high mechanical strength by high heat, high transparency, and biaxial stretching. Examples of the (fluorenyl) acrylic resin having a lactone ring structure include JP-A-2000-230016, JP-A-2002-151814, and JP-A-2002-12-326. The (fluorenyl) acrylic resin having a lactone ring structure described in Japanese Laid-Open Patent Publication No. Hei. No. 2002-254544, and the like. The (meth)acrylic resin having a lactone ring structure preferably has a cyclic structure represented by the following formula (Chemical Formula 1). [Chemical 1]

"W judges the bar clothes,, the milk outside the sputum smashed the original organic residue of 1~20. Further, the organic residue may also contain an oxygen atom. In the structure of the (meth)acrylic resin having an internal vinegar ring structure, the formula 129667.doc -27- 200900761 (Chemical Formula 1) represents a content ratio of the lactone ring structure, preferably 5 to 9 Å by weight. 'Better is 1 〇 to 70% by weight, and further preferably 1 〇 to 6 〇 by weight %, particularly preferably 10 to 50% by weight. When the content of the lactone ring structure in the structure of the (meth)acrylic resin having the inner duck ring structure is less than 5 weight percent, heat resistance, solvent resistance, and surface hardness may be insufficient. When the content of the lactone ring structure in the structure of the (meth)acrylic resin having a lactone ring structure is more than 90% by weight, there is a possibility that the formability is insufficient. The mass average molecular length of the (meth)propionic acid resin having a lactone ring structure is preferably from 1,000 to 2,000,000, more preferably from 5,000 to 1,000,000, further preferably from 1,000 to 500,000 'particularly 5 〇〇〇〇~5〇〇〇〇〇. When the mass average molecular weight deviates from the above range, it is considered to be inferior in terms of moldability. The (meth)acrylic resin having a lactone ring structure preferably has a Tg of U5 ° C or more, more preferably 12 (TC or more, further preferably 125. 〇 or more, particularly preferably 13 (Tc or more). For example, when the polarizing plate is used as a transparent protective film, the Tg is a transparent protective film which is excellent in durability. The Tg of the above-described (fluorenyl) acrylic resin having a lactone ring structure is used. The upper limit is not particularly limited, and is preferably 170 ° C from the viewpoint of moldability and the like. The (fluorenyl) acrylic resin having a lactone ring structure is formed by injection molding. The higher the total light transmittance measured according to ASTM (American Society for Testing and Materials) 〇〇 3 method 129667.doc -28- 200900761, the better, preferably 85% or more, more preferably 88% or more, further preferably 9% or more. The total light transmittance is the basis of transparency, and when the total light transmittance is less than 85%, the transparency may be lowered. The above transparent protective 臈 generally uses a low frontal phase difference. At 40 nm, and the phase difference in the thickness direction is lower than A transparent protective film of 80 nm. The front phase difference is represented by Re = (nx - ny) xd. The thickness direction phase difference Rth is represented by the Chinese gas η χ _ nz) xd. Further, the Νζ coefficient is Nz = (nx_nz) / ( [nx_ny] is shown. [The refractive index of the film in the slow axis direction, the fast axis direction, and the thickness direction is set to nx, ny, and nz 'd (nm) respectively. The slow axis direction is the refractive in the film plane. The direction of the maximum rate]. Further, it is preferable that the transparent protective film is not colored as much as possible. It is preferable to use a transparent protective film having a phase difference of _9 〇 nm to +75 nm in the thickness direction, which can be used by using Such a retardation (Rth) is a transparent protective film of -90 nm to +75 nm, and the polarizing plate coloring (optical coloring) caused by the transparent protective film is substantially eliminated. The phase difference (Rth) in the thickness direction is - The step is (10), especially preferably, nm~·f~45 nm. In addition, as the transparent protective film, a phase difference of 40 (four) or more and/or a thickness direction of 80 faces can be used. The phase difference plate of the above phase difference. The front phase difference is usually controlled to be in the range of 40 to 200 nm. Usually, it is controlled to a range of 8 〇 to 3 〇〇 (10). When a phase difference plate is used as the transparent protective film, the phase difference plate also functions as a transparent protective film, so that the thickness can be reduced. The birefringent film obtained by subjecting the polymer (4) to uniaxial or biaxial stretching treatment, the alignment film of the liquid crystal polymer, and the alignment layer of the liquid crystal polymer by the film support 129667.doc -29-200900761, etc. The thickness of the plate is also not particularly limited to 'usually around 20 to 150 μm.

Examples of the polymer material include polyvinyl alcohol, polyvinyl butyral, polydecyl vinyl ether, polyhydroxyethyl acrylate, m ethyl cellulose, hydroxypropyl cellulose, methyl cellulose, and polycarbonic acid. Esters, polyaryl esters, polysulfones, polyethylene terephthalate, polyethylene naphthalate, polyethersulfone, polyphenylene sulfide, polyphenylene, polyaryl stone, polyamine, Polyimine, poly-dicarbon, polyvinyl chloride, cellulose resin, cyclic polyolefin resin (norbornene-based resin) or these binary, ternary copolymers, graft copolymers, blends Compounds, etc. The polymer material is an alignment material by stretching or the like (the stretching film is a liquid crystal polymer, and for example, a linear atomic group (liquid crystal original) which imparts a conjugate property to the liquid crystal alignment property is introduced into the main chain or the side bond of the polymer. Examples of the liquid crystal polymer of the main chain type or the side chain type. Specific examples of the main chain type liquid crystal polymer include a structure in which a liquid crystal priming unit is bonded to a space portion imparting flexibility, for example, a nematic alignment type. Polyacetal liquid crystal polymer, disc type polymer or cholesteric polymer #. Specific examples of the side chain type liquid crystal polymer include polydendron, polyacrylic acid vinegar, polymethyl methacrylate The vinegar or the polymalonic acid vinegar is a main chain skeleton ′ as a side chain which has a spacer formed by the common atomic group 2 and has a liquid crystal source formed by a para-substitution-substituted cyclic substance unit which imparts nematic alignment. Polymers, etc. Examples of such liquid crystal polymers are carried out by a method of rubbing a surface of a film such as polyimide or 4-ethylene alcohol formed on a glass plate, and oblique steaming Oxidation film The solution of the liquid crystalline polymer is developed on the treated surface and heat-treated. 129667.doc -30- 200900761 The phase difference plate may be used according to, for example, to compensate for coloring or viewing angle due to birefringence of various wavelength plates or liquid crystal layers. On the other hand, those having an appropriate phase difference can be used to control two or more kinds of retardation plates to control optical characteristics such as phase difference. The phase difference plate can be selected and used according to various uses to satisfy nx=ny>nz, nx>ny>nz , nx>ny=nz, nx>nz>ny, nz=nx>ny, nz>nx>ny, ηζ>ηχ=ηΥ. Furthermore, ny=nz not only contains the case where ny is exactly the same as nz' Further, in the case where the ny and nz are substantially the same, for example, in the phase difference plate satisfying nx > ny > nz, it is preferable to use the front phase difference to satisfy the 40 to 100 nm thickness direction difference to satisfy the ι〇〇~ 32 〇 nm, the Nz coefficient satisfies 1.8 to 4.5. For example, in a phase difference plate (positive A plate) satisfying nx > ny = nz, it is preferable to use a front phase difference of 1 〇〇 to 2 〇〇 nm. Phase difference plate. For example, to satisfy the phase of nz=nx>ny In the difference plate (negative a plate), it is preferable to use a phase difference plate whose front phase difference satisfies 100 to 2 〇〇 nm. For example, in a phase difference plate satisfying nx > nz > ny, it is preferable to use the front side. The phase difference satisfies 1 50 to 300 nm, and the Nz coefficient satisfies the phase difference plate larger than 〇 to 〇 7. Further, as described above, for example, nx=ny>nz, nz>nx>ny or nz>nx=ny can be used. The transparent protective film can be appropriately selected according to a suitable liquid crystal display device. For example, in the case of VA (Vertical Alignment), including mva (MulU-domain Vertical Alignment) and pva (Patterned Vertical Alignment), at least one of the polarizing plates is preferred. The transparent protective film on the side (unit side) has a phase difference. As a specific phase difference, Re=〇~24〇nm, 129667.doc -31 · 200900761 is preferable.

The range of Rth=0~500 nm. The case of 'three-dimensional refractive index' is preferably the case of nx > ny = nZ, nx > ny > nz, nx > nz > ny, nx = ny > nz (uniaxial biaxial, negative C plate). When a polarizing plate is used above and below the liquid crystal cell, the transparent protective film having a phase difference or a top or lower of the liquid crystal cell may have a phase difference. For example, when IPS (In-Plane Switching) includes FFS (Fringe FieM Switching), the transparent film on the polarizer side may have a phase difference or may not have a phase difference. For example, when there is no phase difference, it is preferable that there is no phase difference between the liquid crystal cell and the upper and lower sides. And the right cypress is blue. When there is a phase difference, it is preferable to have a phase difference between the upper and lower sides of the liquid crystal cell, and a case where the upper and lower sides have a phase difference (for example, 'the upper side is deuterated, and the lower side has no phase difference”. Or the case where the upper side is a seesaw and the lower side is a positive C plate). In the case of having a phase difference, 'the range of Rn5 (10) nm and H5QQ _ is preferable. When the two-dimensional refractive index is used, it is preferable that nx> ny=nz, :Ζ, ηΖ>ηΧπ, ηζ>ηχ>η^^π, _^1 : the above film having a phase difference can be The above function is imparted by separately bonding to a transparent protective tape having no phase difference. There are 4 彳 difference surface modification treatment. Material mm (4) feeding (4) before the implementation of the first, second, ... can also be applied to the above transparent protective film coating, anti-reflective treatment, or to prevent: the surface of the polarizer is tested hard non-diffusion or anti-glare The purpose is 129667.doc •32· 200900761. The hard coating treatment is performed to prevent the surface of the polarizing plate from being damaged or the like. For example, a hardened film excellent in hardness or sliding properties such as an acid-curable resin such as an acid or a dye can be added to the transparent film. A hard coat layer is formed by protecting the surface of the crucible or the like. The antireflection treatment is performed by preventing the surface of the polarizing plate from reflecting external light, and can be realized by formation of a conventional antireflection film or the like.防, the anti-adhesive treatment is carried out in order to prevent adhesion to an adjacent layer (for example, a diffusing plate on the backlight side). Moreover, the purpose of performing the anti-glare treatment is to prevent external light from being reflected on the surface of the polarizing plate and to interfere with the visibility of the transmitted light of the polarizing plate, for example, by using a sand blasting method or a (four) plus-surface roughening method and blending transparent particles. In a suitable manner, a fine concavo-convex structure is formed on the surface of the transparent protective film. As the fine particles contained in the formation of the surface fine uneven structure, for example, cerium oxide, aluminum oxide, titanium oxide, zirconium oxide, tin oxide, indium oxide, or the like having an average particle diameter of 〇5 to 2 〇^ can be used. The inorganic fine particles which are conductive, such as oxidized bromine and oxidation, and transparent fine particles such as organic fine particles containing a crosslinked or uncrosslinked polymer. When the surface fine uneven structure is formed, the use of the fine particles 4 is usually about 2 to 7 parts by weight, preferably 5 to 50 parts by weight, per 100 parts by weight of the transparent resin forming the surface fine uneven structure. The anti-glare layer may have a diffusion layer (viewing angle expanding function or the like) that diffuses transmitted light by the polarizing plate to expand the viewing angle or the like. Further, the antireflection layer, the anti-adhesion layer "diffusion layer" or the anti-glare layer may be slid on the transparent protective film itself, or may be separately provided as an optical layer on a film different from the transparent protective film. 129667.doc -33- 200900761 The polarizing plate of the present invention is produced by bonding a transparent protective film and a partial first film to a splicer. The method further comprises: applying the above-mentioned adhesive to the surface of the polarizer to form the surface of the layer J of the above-mentioned bonding layer and/or the transparent protective film, and forming the above-mentioned adhesive layer. % #上上步骤; The polarizer and the moon-retaining film are adhered to each other through the above-mentioned polarizing plate; and the child! A step of forming an adhesive layer by irradiating an active energy ray (electron, ray, ultraviolet ray, or the like) onto the polarizing plate and the transparent film 4 by the adhesive for the polarizing plate a2 ^.

The coating method of the subsequent agent can be appropriately selected by pulling the viscosity of the splicer or the target thickness. Examples of the method of coating the side of the 彳 彳 丨 ( 四 四 四 四 四 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向 反向Coating machine, die coating machine, scraper coating your machine, # ^ ^ i stop the bar machine coating machine. Further, at the time of coating, a dip coating method or the like can be suitably used. The polarizer and the transparent protective film were bonded via an adhesive applied in the above manner. The adhesion between the polarizer and the transparent protective film can be carried out by a roll bonding machine or the like, and after bonding the polarizer and the transparent protective film, the active energy ray (electron ray, ultraviolet ray, etc.) is irradiated to cure the adhesive. The direction of irradiation of the active energy ray (electron ray, ultraviolet ray, etc.) can be irradiated from any suitable direction. It is preferred to irradiate from the side of the transparent protective film. # After the irradiation is performed on the side of the polarizer, the polarizer may be deteriorated by the active energy rays (electron rays, ultraviolet rays, etc.). The active energy ray-curable adhesive is preferably used as an electron beam curing type adhesive. The irradiation condition of the electron beam may be any suitable condition as long as the above-mentioned conditions of the 129667.doc -34-200900761 are adhered to. For example, when the electron beam is irradiated, the acceleration voltage is preferably 5 kV to 300 kV, and further preferably 10 kV to 250 kV. When the accelerating voltage is lower than 5 kV, the electron beam may not reach the adhesive and cause insufficient hardening. When the accelerating voltage exceeds 300 kV, the penetration of the sample is too strong. 'The electron beam produces reflection, and the moon b is transparent. Damage caused by film or polarizer. As the irradiation line amount, 5 1 〇〇 kGy ' is further preferably 10 to 75 kGy. When the amount of the irradiation line is less than 5 kGy, the adhesive hardening is insufficient, and when it exceeds 100 kGy, the transparent protective film or the polarizer is damaged, and mechanical strength is lowered or yellowed, and specific optical characteristics are not obtained. When curing is performed by irradiation with 1 external line, the polymerization initiator 〇i 5 parts by weight is blended with respect to 100 parts by weight of the curable component, preferably 丨 4 weight loss is preferably 2 to 3 parts by weight. . The ultraviolet irradiation conditions may be any suitable conditions as long as the conditions of the above (4) can be hardened. The amount of ultraviolet light irradiation is preferably 100 to 500 mj, and further preferably 200 to 4 m. The thickness of the adhesive layer in the polarizing plate of the present invention obtained in the above manner was 0.01 7 μη. Preferably, 〇〇1~5 is called, and it is better that (4) further good is 〇.01~1 When the above thickness is less than 〇.〇1 μηι, the cohesive force of the bonding force itself may not be obtained, so that the subsequent When the thickness of the strength field adhesive layer exceeds 7 μm, the polarizing plate cannot satisfy the durability. Further, the adhesive layer has a gel fraction of 5 Å or more by weight, which is preferable in terms of durability. The gel fraction is preferably 60% by weight or more, 129667.doc -35-200900761, and the good 疋70 is more than 1%. Further, the gel fraction was measured by the method described in the examples. Early system 4 is usually irradiated with an inert gas by t + ray irradiation, but if necessary, it can also be carried out in a large i or a small amount of oxygen, and a material depending on the protective film can be used. A small amount of oxygen in the human body produces an oxygen suppression effect on the surface of the transparent protective film which is initially irradiated by the electron beam, and prevents the transparent film from being damaged by the film. The electron beam can be effectively irradiated only to the adhesive. 3 Γ,

When the above-mentioned manufacturing method is carried out in a continuous production line, the linear velocity depends on the hardening time of the adhesive, but it is preferably 5 〇〇 m/min, more preferably 00 m/min, and further preferably 丨〇~m. /min. When the linear velocity is too small, the productivity is lacking, or the damage to the transparent protective film is too large, a polarizing plate capable of withstanding the durability test cannot be produced. When the linear velocity is too large, the curing of the adhesive is insufficient. Sometimes the target adhesion is not obtained. The polarizing plate of the present invention can be used as an optical film laminated with other optical layers in practical use. The optical layer is not particularly limited, and a ruthenium layer or two or more layers such as a reflection plate or a semi-transmissive plate, a phase difference plate (including a 1/2 or 1/4 wave plate), and a viewing angle compensation film may be used, which is equal to the liquid crystal display device. The optical layer sometimes used in the formation of the plasma. Particularly preferably, the polarizing plate is a reflective polarizing plate or a semi-transmissive polarizing plate which is formed by laminating a reflecting plate or a transflective plate on the polarizing plate of the present invention; and elliptically polarizing light is formed by laminating a phase difference plate on the polarizing plate. a plate or a circular polarizing plate; a wide viewing angle polarizing plate formed by laminating a viewing angle compensation film on a polarizing plate; or a polarizing plate formed by laminating a brightness improving film on a polarizing plate. The reflective polarizing plate is formed by providing a reflective layer on a polarizing plate, and can be used to display a crystal display device or the like by reflecting light from a person on the visual (four) side (display side) 129 667.doc 36· 200900761 == A light source such as a backlight, and a polarizing light are used to make the liquid crystal display device thinner. When the reflection type is formed, it may be carried out by a suitable method such as a method in which a transparent protective layer is equal to a surface on which a polarizing plate is provided with a reflective layer formed of a gold material, as needed. Γ

J, as a specific example of the reflective polarizing plate, may be exemplified by a matte treatment = a transparent protective film on the surface, and a reflective layer formed by a reflective metal such as Lu or a vaporized film is formed. In addition, the transparent protective film may be formed of fine particles to form a fine concavo-convex structure, and a reflective layer having a fine concavo-convex structure thereon may be used. The reflective layer of the fine concavo-convex structure diffuses the incident light by diffuse reflection, thereby preventing the directivity or the appearance from becoming bright, thereby suppressing the advantage of unevenness in brightness and the like. Further, the transparent protective ruthenium containing fine particles also has the advantage of diffusing the incident light and the reflected light of the incident light to further suppress the unevenness of light and dark. The formation of the reflective layer of the fine concavo-convex structure reflecting the fine concavo-convex structure on the surface of the transparent protective film can be directly formed by, for example, a vacuum evaporation method, an ionization method, a vapor deposition method such as a mineral type, or a plating method. The method of attaching a metal to the surface of the transparent protective layer is performed. Instead of directly attaching the reflecting plate to the transparent protective film of the polarizing plate, it may be used as a reflecting sheet formed by providing a reflecting layer on a suitable crucible based on the transparent crucible. Furthermore, since the reflective layer is usually formed of a metal, it is considered to be better from the viewpoint of preventing the reflectance from being lowered due to oxidation, thereby maintaining the initial reflectance for a long period of time or avoiding the need for a separate protective layer. 129667.doc -37-200900761 It is a use form in which the reflective surface is covered with a transparent protective film, a polarizing plate, or the like. Further, in the above, the semi-transmissive polarizing plate can be obtained by forming a semi-transmissive reflective layer such as a semi-mirror which reflects light and transmits light. The semi-transmissive polarizing plate is usually disposed on the back side of the liquid crystal cell, and can form a liquid crystal display device or the like of the following type, that is, when a liquid crystal display device or the like is used in a relatively bright environment, the reflection comes from the visual confirmation side (display side). An image is displayed by incident light, and an image is displayed using a built-in light source such as a backlight built in the back side of the semi-transmissive polarizing plate in a relatively dark environment. That is, the 'semi-transmissive polarizing plate can effectively form a liquid crystal display device of the following type, that is, the energy used for a light source such as a backlight can be saved in a bright environment, and the built-in light source can be used in a relatively dark environment. An elliptically polarizing plate or a circular polarizing plate in which a phase difference plate is laminated on a polarizing plate will be described. When the linearly polarized light is changed to elliptically polarized or circularly polarized light, or the elliptically polarized or circularly polarized light is changed to linearly polarized light, or the polarized direction of the linearly polarized light is changed, a phase difference plate or the like is used. In particular, as a phase difference plate that changes linearly polarized light into circularly polarized light or changes circularly polarized light into linearly polarized light, a so-called quarter-wave plate (also referred to as a λ/4 plate wavelength plate (also referred to as λ/2) can be used. The plate is generally used to change the direction of polarization of the linearly polarized light. The elliptically polarizing plate can be effectively used to compensate (prevent) the birefringence of the liquid crystal layer of a super twisted nematic (STN) liquid crystal display device. The color (blue or yellow) is used to perform the above-described coloring, black and white display, etc. Further, when controlling the three-dimensional refractive index, it is also possible to compensate (anti-129667.doc -38·200900761) from oblique observation of the liquid crystal display device. The coloring generated when the surface is kneaded can be effectively used for, for example, the adjustment of the color tone of the image of the reflective liquid crystal display device of the color display image, and also has the function of reflection. Specific examples of the phase difference plate include a suitable polymerization of carbonate, i vinyl alcohol, polystyrene, polymethyl methacrylate, polypropylene or fluorene polyolefin, polyaryl vinegar, polyamine or the like. Object shape The birefringence film formed by the stretching treatment, the alignment film of the liquid crystal polymer, the alignment layer of the liquid crystal polymer using the film, etc. The phase difference plate may have and serve to compensate for, for example, various wavelength plates or liquid crystals. The color difference, the viewing angle, and the like, which are caused by the birefringence of the layer, may be such that the optical characteristics such as the phase difference are controlled by stacking two or more types of retardation plates. Or a reflective elliptically polarizing plate is formed by laminating a polarizing plate or a reflective polarizing plate and a phase difference plate in an appropriate combination. Such an elliptically polarizing plate or the like can also be borrowed by a combination of a (reflective) polarizing plate and a phase difference plate. In the manufacturing process of the liquid crystal display device, a polarizing plate and a retardation plate are laminated in this order, and as described above, an optical film such as an elliptically polarizing plate is formed in advance, because of quality stability or lamination operability. It is excellent in that it has the advantage of improving the manufacturing efficiency of a liquid crystal display device, etc. The viewing angle compensation film is viewed from a direction slightly inclined from the screen. In the case of the face of the display device, the film for sharpening the viewing angle is also made clear. As such a viewing angle compensation phase difference plate, for example, an alignment film of a retardation film, a liquid crystal polymer, or the like The transparent substrate is supported by 129667.doc -39- 200900761. The alignment layer of the liquid crystal polymer or the like is subjected to uniaxial stretching in the direction of the surface. Generally, the phase difference plate is used along the pair, and is used as the axis of the viewing angle compensation. The bicomponent film is applied along the surface direction thereof, and the refractive index in the thickness direction in which the uniaxial stretching is performed in the direction of the surface is controlled by a birefringence polymer or a biaxially stretched film such as a tilt alignment film. The alignment film may, for example, be a polymer film which is subjected to a shrinkage force by heating after shrinking the film, and may be subjected to stretching treatment and/or shrinkage treatment of the polymer film, or tilting the liquid crystal polymer. The winner and so on. As the raw material polymer of the phase difference plate, a polymer having the same phase difference as described above can be used, and it can be used to prevent a change in the viewing angle due to the phase difference caused by the a unit. A suitable polymer for the purpose of coloring or the like, expanding the viewing angle of the eyesight, and the like. Further, from the viewpoint of realizing a wide viewing angle of good visual observation, etc., it is preferable to use an optical fiber formed of an alignment layer of a liquid crystal polymer, particularly an inclined alignment layer of a disc-type liquid crystal polymer. An optically compensated phase difference plate of an anisotropic layer. A polarizing plate in which a polarizing plate and a thickness-improving film are bonded together is usually disposed on the back side of the liquid crystal cell. The brightness-increasing film system exhibits a characteristic of a film in which a linear polarization of a specific polarization axis or a circular polarization of a specific direction is reflected when natural light is incident by a backlight of a liquid crystal display device or the like, or reflection from a back side. Since the other light is transmitted, the polarizing plate formed by laminating the brightness enhancement film and the polarizing plate 'transmits light from a light source such as a backlight to obtain a transmitted light of a specific polarization state, and the specific polarized light 129667.doc -40- Light outside the state of 200900761 is not transmitted and is reflected. The light which is reflected by the brightness-increased film surface is inverted by the reflection layer or the like provided on the rear side thereof, and is incident on the brightness enhancement film again to transmit a part or all of the light as a specific polarization state to increase the transmission brightness. The light of the film is increased, and the polarized light which is hard to be absorbed by the polarizer is supplied, and the amount of light which can be used for liquid crystal display image display or the like is increased, whereby the brightness can be improved. In other words, when a light-increasing film is not used and a polarizer is transmitted from the back side of the liquid crystal cell to cause light to enter, the light having a polarization direction that does not coincide with the polarization axis of the polarizer is substantially polarized. Absorbed 'and thus could not be transmitted through the polarizer. That is, although it differs depending on the characteristics of the polarizer used, about 50% of the light is absorbed by the polarizer, so that the amount of light used for liquid crystal image display or the like is correspondingly reduced, resulting in darkening of the image. The brightness enhancement film is reversely operated such that light having a polarization direction in which the polarizer can be absorbed is not incident on the polarizer but is temporarily reflected by the brightness enhancement film, and further reversed by a reflection layer or the like provided on the rear side thereof. Then, it is incident on the thinness-increasing film again. The brightness-increasing film is such that the polarized light of the light reflected and inverted between the two is transmitted through the polarized light in the polarizing direction of the polarizer and is supplied to the polarizer. Light such as a backlight is effectively used in the image display of the liquid crystal display device, so that the brightness of both sides can be improved. A diffusion plate may be provided between the brightness enhancement film and the reflective layer or the like. The light in the polarized state reflected by the brightness enhancement film is directed toward the reflection layer or the like, but the diffusing plate is provided to uniformly diffuse the passing light while eliminating the polarization and becoming a non-polarized state. That is, the diffusing plate restores the polarized light to the original natural light state. In the non-polarized state, the light is reflected by the reflective layer or the like, and is again incident on the brightness enhancement film through the diffusion plate. In this way, by providing a diffusing plate between the brightness interpolating film and the reflective layer or the like to restore the polarized light to the original natural light state, the brightness of the display screen can be maintained, and the brightness unevenness of the display screen can be reduced, thereby providing uniform and bright. Picture. By providing the diffusing plate ′, the number of repeated reflections of the primary incident light is appropriately increased, and the diffusing function of the diffusing plate is provided to provide a uniform and bright display screen. As the brightness-enhancing film, for example, a multilayer laminated film having a dielectric film or a multilayer laminated body having a different refractive index anisotropy can be used, and a film which transmits a linear polarized light of a specific polarizing axis and reflects other light characteristics can be used. a film such as an alignment film of a cholesteric liquid crystal polymer or a film of the alignment liquid crystal layer on a film substrate, which exhibits a property of polarizing light of any one of left-handed or right-handed rotation to transmit other light. Suitable membranes. Therefore, in the brightness enhancement film of the type in which the linear polarization of the specific polarization axis is transmitted, the direct transmission polarization of the transmitted light can be uniformly incident on the polarizing plate, thereby suppressing absorption loss due to the polarizing plate, and The light is transmitted efficiently. On the other hand, in the case where the brightness of the type in which the circularly polarized light is transmitted is increased as in the case of the cholesteric liquid crystal layer, the circularly polarized light can be directly incident on the polarizer, but it is preferable to pass the phase from the viewpoint of suppressing the absorption loss. The difference plate linearly polarizes the circular polarized light and then enters the polarizing plate. Further, circularly polarized light can be converted into linearly polarized light by using a quarter-wave plate as the phase difference plate. A phase difference plate which functions as a quarter-wave plate in a wide wavelength range such as a visible light region can be obtained, for example, by a light color of 129667.doc -42 - 200900761 at a wavelength of 550 nm. The retardation layer that functions as a quarter-wavelength plate overlaps with a phase difference layer that exhibits other phase difference characteristics, for example, a phase difference layer that functions as a half-wavelength plate. Therefore, the phase difference plate disposed between the polarizing plate and the brightness enhancement film can be formed of one or two or more layers of retardation layers. Further, in the case of the cholesteric liquid crystal layer, a material having a different reflection wavelength may be combined to form an arrangement structure in which two or more layers are overlapped, thereby obtaining a circularly polarized light in a wide wavelength range such as a visible light region. Based on this, a transmissive circularly polarized light of a wider wavelength range can be obtained. Further, the polarizing plate may be formed by laminating a polarizing plate and two or more optical layers, as in the above-described polarizing partial release polarizing plate. Therefore, a reflective elliptically polarizing plate or a semi-transmissive elliptically polarizing plate in which the above-described reflective polarizing plate or semi-transmissive polarizing plate and retardation plate are combined may be used. The optical raft having the optical layer laminated on the polarizing plate can be formed by sequentially laminating in a manufacturing process such as a liquid helium display device, but the enamel layer is used as an optical entanglement for quality stability or assembly work. Excellent in terms of other aspects, and therefore has an advantage that the manufacturing steps of the liquid crystal display device and the like can be improved. An appropriate bonding mechanism such as an adhesive layer can be used in the laminate. Next to the other optical materials, the axes can be appropriately configured according to the target phase. Alternatively, the polarizing plate or at least one of the polarizing plates may be provided with an adhesive layer for bonding with other members of the liquid crystal. For the adhesive with an adhesive layer and the limitation of y, y, y, (4), for example, an olefinic polymer can be appropriately selected, and a ketone-based compound can be appropriately used. Polyamine vinegar, polyfluorene 129667.doc -43- 200900761 Amine, polyether, fluorine or rubber based polymer as an adhesive for the base polymer. In particular, an adhesive which is excellent in optical transparency such as an acrylic adhesive, exhibits moderate wettability and cohesiveness, and adhesiveness in adhesion, and is excellent in weather resistance and heat resistance can be preferably used. Further, in addition to the above, the foaming phenomenon or the peeling phenomenon which is caused by moisture absorption is prevented, the optical characteristics are deteriorated due to the difference in thermal expansion, or the liquid crystal is flattened, and the liquid crystal display having excellent longevity is formed with high quality. Device, etc. From the viewpoint, it is preferable that the adhesive layer is low in moisture absorption rate and excellent in heat resistance. The adhesive layer may contain, for example, a natural or synthetic resin, particularly a filler, a pigment, a colorant, an antioxidant, etc. formed of a tackifying resin or a glass fiber, a glass bead, a metal powder, and other inorganic powder, and the like, and being added to the adhesive layer. In the middle, the force can also be an adhesive layer containing particles and exhibiting light diffusibility. It can be carried out by attaching an adhesive layer to the surface of the polarizing plate or the optical film or both surfaces. As an example, for example, y is prepared by dissolving or dispersing a base polymer or a composition thereof in a solvent of a separate solvent or a mixture of a suitable solvent such as toluene or ethyl acetate; The adhesive solution is about a weight percentage, and then directly attached to the polarizing plate by an appropriate expansion method such as a casting method or a method, or optically moved; or after forming an adhesive layer on the spacer based on the above, The method of sticking to a polarizing plate or an optical cymbal. The adhesive layer may also be disposed on the surface of the second surface of the surface of the surface layer of the polarizing plate or the optical layer. Further, when disposed on the two sheets, an adhesive layer of a different composition or type or thickness of 129667.doc - 44 - 200900761 may be formed on the front and back surfaces of the polarizing plate or the optical film. Adhesion; degree can be determined according to the purpose of use or the strength of the receiver, etc., generally, ~ 杈曷] 40 call! It is preferably 5 to 3 〇. Especially good is 〇~25 μηι. When f, the degree of change is poor, and the degree of a" is less than 1μΐΏ, the durability difference is 'when the thickness is greater than 40 0111, the pass will be from -μιη岈, and the valley will cause net movement or peeling due to foaming, etc. The appearance becomes bad. For the exposed surface of the stretched layer, in order to prevent contamination, it is possible to temporarily adhere the spacer cover, ', thereby preventing the normal operation and the contact with the adhesive layer. For the plastic film, rubber sheet, paper, ^, etc., for use as a spacer, in order to satisfy the thickness system described above, and to use, for example, a stone leave system or a long bond gauge base 2 Woven fabric, mesh, foamed sheet or metal tantalum, such laminated body β ^ 耆 special suitable for the appropriate spacers. ': ', 乂 rl? polarizing plate and adhesive layer In order to set the fixed layer, the bridging property between the layers may also be formed in the above-mentioned fixed layer between the layers of the above-mentioned fixed layer than the ester 'eight 々 八 — 权 权 权 疋 疋 疋 疋 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自 选自The solid binder is particularly good for the polymer having an amine group in the middle 3. The eight types, due to the amine in the molecule, the Asg_ knife, the amine group of the amine group is not present in the adhesive. The carboxyl group or the like undergoes a reaction or an ionic interaction. The interaction between the carboxyl group and the like ensures a good adhesion as a molecule containing an amine group, a medium-to-spit, and a secondary substance. For example, a polyethylene atomic heart is sighed. Vinyl pyridine, polyvinylpyrrolidine, methylaminoethyl acrylate, etc. A polymer of a monomer based on a private monomer, etc. In the above fixed layer, an antistatic property is imparted to ',, and an antistatic 129667.doc -45-200900761 piece J is used for imparting antistatic resistance. Examples of the electrostatic agent include an ionic two-agent system; conductive polycondensation such as polyaniline, (tetra) phen, agglomerate, and poly[:: a metal oxide system such as tin oxide, oxide oxide, or indium oxide, etc. The viewpoint of the appearance, antistatic effect, and antistatic effect on the stability during heating and humidification - particularly good, the use of conductive polymers, especially, the use of polyaniline, polysphene, etc. Γ

L water-dispersible conductive polymer. When a water-soluble conductive polymer or a dispersive conductive polymer is used as a material for forming an antistatic layer, it is possible to suppress a chemical film substrate from being changed by an organic solvent during coating, and in the present invention For example, a polarizing plate for forming the above polarizing plate, a layer of a film such as a yttrium film, an optical film, or the like, and an adhesive layer may be used, for example, a compound of a ruthenium compound or a benzobenzene compound, a benzotrisal compound or an acrylic acid. The ability of the I-based compound, the nickel-salt compound compound, or the like to be treated by an external absorbent is used. It is possible to use a polarizing plate or an optical film which can be absorbed by an external line and which is suitable for use in a liquid crystal display device. The liquid crystal display device can be formed according to the previous method. In other words, the Pan-Dh liquid-day display device can be formed by appropriately assembling a component, a polarizing plate or an optical film, and a component such as Zhaoming, which is added as needed, and incorporated in a driving circuit or the like. In the present invention, the polarizing plate or the optical film of the present invention is not particularly limited and may be formed according to the prior art. For the liquid crystal cell, any type of liquid crystal cell such as a TN (Twisted Nematic) type or a coffee type 129667.doc -46 - 200900761 type, IPS type, or the like can be used. According to the present invention, a liquid crystal display device in which a liquid crystal display device having a polarizing plate or an optical pickup is disposed on one side or both sides of a liquid crystal cell, or a device using a backlight or a reflecting plate in an illumination system can be used. At this time, the polarizing plate or the optical film of the present invention may be disposed on one side or both sides of the liquid crystal cell. When the polarizing plate or optical film is placed on both sides of the field, the materials may be the same material or different materials. Further, when a liquid crystal display device is formed, one or two or more layers such as a diffusion plate and an anti-glare layer may be disposed at an appropriate field position.

Suitable parts such as anti-reflection 臈, protective plate, 稜鏡 array, lens array sheet, light diffuser, and backlight. Then, in the organic EL display device, a transparent electrode, an organic light-emitting layer, and a metal electrode are sequentially laminated on a transparent substrate to form an illuminant (in an organic EL display device). Organic electroluminescent body). Here, the organic light-emitting layer is a laminate of various organic films, and is known to have a laminate of a hole injection layer formed of a triphenylamine derivative or the like and a light-emitting layer formed of a fluorescent organic solid such as ruthenium, or The laminate of the light-emitting layer and the electron injecting layer formed of a naphthoquinone derivative or the like, or a combination of the hole injecting layer, the light-emitting layer, and the electron injecting layer. The organic EL display device emits light by applying a voltage to the transparent electrode and the metal electrode to inject holes and electrons into the organic light layer, and recombining the holes with the electrons. The energy generated: a fluorescent substance that emits when the excited fluorescent substance returns to the ground state. The recombination mechanism in the middle is the same as that of the ordinary diode. It can also be measured by 129667.doc -47- 200900761 that the current and luminous intensity show a strong nonlinearity with rectification relative to the applied voltage. In the organic EL display device, in order to take out the light generated in the organic light-emitting layer, at least the side electrode must be transparent, and a transparent electrode made of transparent conductive (tetra) such as oxidized tin (ITO) is usually used as an anode. On the other hand, in order to facilitate the injection of electrons and to improve the luminous efficiency, it is important to use a metal electrode such as Ag or Al-Li for a substance having a small work function in the cathode. In the organic display device having such a configuration, the organic light-emitting layer is formed of an extremely thin film having a thickness of about nm. Therefore, the organic light-emitting layer is also "very similar", so that the light is substantially completely transmitted. As a result, the light reflected from the surface of the transparent substrate and transmitted through the transparent electrode layer when not emitting light, the light reflected by the metal electrode is again turned to the transparent substrate. In the organic EL display device including the organic electroluminescent body, the organic electroluminescent body emits light by applying a voltage when the visual inspection is performed from the outside. The surface of the organic light-emitting layer has a transparent electrode, and has a metal electrode on the back side of the organic light-emitting layer, and a polarizing plate on the surface side of the transparent electrode, and a phase difference between the transparent electrode and the polarizing plate. The phase difference plate and the polarizing plate have a function of causing light reflected from an external person and reflected by the metal electrode to be polarized. Therefore, the polarizing action has an effect that the mirror surface of the metal electrode cannot be visually observed from the outside. The Μwavelength plate constitutes the phase difference plate' and the angle of the polarization direction of the polarizing plate and the phase difference plate is adjusted to π/4' by the angle of 129667.doc -48-200900761 The mirror surface of the metal electrode is completely shielded. That is, the external light incident on the organic EL display device transmits only the linearly polarized light component due to the polarizing plate. The linear polarized light is usually converted into elliptically polarized light by the phase difference plate, especially when the phase When the difference plate is a quarter-wavelength plate and the angle formed by the polarization direction of the polarizing plate and the phase difference plate is π/4, it becomes circularly polarized light. 'The circularly polarized light is transmitted through the transparent substrate, the transparent electrode, the organic film, and After being reflected on the metal electrode, it is again transmitted through the organic film, the transparent electrode, and the transparent base plate, and is again converted into linearly polarized light by the phase difference plate. Since the linearly polarized light is orthogonal to the polarization direction of the polarizing plate, the polarized light cannot be transmitted. As a result, the mirror surface of the metal electrode can be completely shielded. [Embodiment] Hereinafter, embodiments of the present invention will be described, but embodiments of the present invention are not limited thereto. <Tg: Glass transition temperature> Glass used Transfer temperature differential scanning calorimetry (DSC, differential k scanning calorimetry), measured at a heating rate of deuteration / minute. The sample is placed in a 5 mg sample. In the gland type container, it is used by crimping. <Gel fraction> The applicator is used to apply the adhesive used in each example to the release film, and the other release film is bonded thereto, and then Each of the same conditions was irradiated with an electron beam, and the adhesive was hardened to form an adhesive layer. The release film was peeled off from both sides of the obtained adhesive layer, and about 200 mg was taken out from the adhesive layer, and it was poured into 129667.doc. 49- 200900761 Weigh the weight to obtain the weight (W1). Then, wrap it in a microporous tetrafluoroethylene film (film weight: W2) and tie it with a rope, and dipped in about 50 ml of benzene for 4 days. After the extraction of the soluble component, it was dried in an incubator at 11 〇t: for 1 hour, and the total weight (W3) was measured. From these measured values, the gel fraction (% by weight) of the dot layer was determined according to the following formula. 'Suspected gel fraction (% by weight) = ((W3-W2) / Wl) xl00 (polarizer) The average degree of polymerization is 2400, the degree of saponification is 99 mol%, and the thickness is 75 μηι

The dilute alcohol film is at 3 〇. (: immersed in warm water for 60 seconds to swell. Then, - 0.3 g by weight (weight ratio: iodine / potassium iodide = 〇 5 / 8) 3 染色 iodine solution dyed for 1 minute '- surface extended to 3 5 times. The 9' side is immersed in the boric acid solution of the price * by weight for 5 minutes, the surface is extended to a ratio of 6 times. After stretching, it is dried in an incubator at 7 ° C. 3 〇 minutes to obtain a polarizer with a thickness of 26. The moisture content of the polarizer is 13 $% by weight. '(Transparent protective film) Use of lactone polymethyl methacrylate lm (lmma, lactone 20% ' Thickness 30 _, Re=〇nm, Rth=() _. (Phase difference value) One value (4) is used in parallel polarizer rotation difference meter [Prince Measurement Machine (Stock) system, system... ], according to the value of the wavelength __ seized by the measured /A2" nz value and thickness (4) to find the front phase difference to, thick, ^

Rth' Nz. [Where, the slow axis of the film: ° eye position difference axis direction and thickness direction 129667.doc • 50 · 200900761 refractive index is set to η χ, ny, nz, d (nm) is the thickness of the film. The slow axis direction is the direction in which the refractive index in the film plane is the largest. ]. Example 1 (Binder: Curable component) N-propenylmorpholine was used as an adhesive. (Production of polarizing plate) On the side of the above-mentioned transparent protective film, the above-mentioned adhesive was applied to the side of the above-mentioned transparent protective film by using a micro gravure coater (gravity b 〇 rotation speed: 14%/line speed) so as to have a thickness of 5 μm. Transparent protective film for the agent. Then, the above-mentioned adhesive transparent protective film was bonded to both surfaces of the above polarizer using a roller machine. The self-adhesive attached adhesive transparently protects the side (both sides) from the electron beam, and obtains a polarizing plate having a transparent protective film on both sides of the polarizer. The line speed is 2 〇 m/min, the acceleration voltage is 25 〇 kv, and the amount of illumination is 2 〇. The temperature was 140 ° C and the gel fraction was 72% by weight. Examples 2 to 21, Comparative Example ^ In the first embodiment, except that the type of the curable component, the ratio of the compounding agent, and the thickness of the subsequent layer were changed as shown in Table, A polarizing plate was obtained in the same manner. Further, in Comparative Examples 4 to 6, 3 parts by weight of a polymerization initiator was added to 100 parts by weight of the hardening component. Moreover, according to the thickness of the adhesive layer, the gravure roll is changed to 镜·8 μιη and J μηι according to the thickness of the adhesive layer, and the change is (4) 〇 at 2 pm, and the change is measured at 3 _ For #25〇, in 4 _ and 4·2 _ change to #22〇, in 5A and 6 _ change to #18〇' in 1〇_change to #12〇. The Tg and the gel fraction of the adhesive layers of the respective examples are collectively shown in Table}. 129667.doc -51 · 200900761 [Evaluation] The following evaluations were performed on the polarizing plates obtained in the examples and the comparative examples. The results are shown in Table 1. <Durability> The obtained polarizing plate was cut into a size of 15 inches diagonally, and adhered to both surfaces of the 无5 mm thick alkali-free glass by an acrylic adhesive in the direction of the crossed polarizer. Production samples. The sample was placed under the following conditions. Condition (1): The thermal shock of _40 to 85 is carried out for 3 〇 2 χ 2 〇〇 conditions (2). The thermal shock of -30 to 70 ° C is carried out for 3 〇 2 χ 2 times using the following The standard evaluates the state of the polarizing plate over time in each of the above conditions. ◎: No cracks were generated. 〇· Only short cracks of 5 mm or less are produced at the ends. △. Short-line cracks are generated at locations other than the ends. However, the polarizing plate is not separated into two or more portions due to the line. . Polarization is separated by this line: two or more cracks are generated in places other than the end. <peel strength> mrnxi5 mm size, made into a sample

Mm/rnin. The obtained polarizing plate between 50 mm and 100 mm in the obtained measurement data was cut into 15 mm I29667.doc -52·200900761 The data were averaged and the values are shown in Table 1. [Table 1] Hardenable component (% by weight) Active energy ray of the adhesive layer durability peeling strength DA-141 N-substituted amide-based monomer Tg ro Thickness (μηι) Gel percentage (% by weight) 0) (2) HEAA N-MAN NIP AM ACMO Example 1 - _ • • 100 EB 140 5 72 ◎ ◎ 0.10 Example 2 - • - 100 EB 140 1 72 ◎ ◎ 0.10 Example 3 - • • • 100 EB 140 0.1 72 ◎ ◎ 0.10 Example 4 12 _ _ - 88 EB 108 4.2 75 〇 ◎ 0.10 Example 5 12 - 88 EB 108 2 75 ◎ ◎ 0.10 Example 6 12 - - 88 EB 108 0.3 75 ◎ ◎ 0.10 Example 7 25 - 75 EB 82 5 77 〇 ◎ 0.10 Example 8 25 _ . 75 EB 82 0.1 77 ◎ ◎ 0. Ϊ 0 Example 9 39 . - 61 EB 69 1 71 〇 ◎ 0.12 Example 丨 0 39 _ • 61 EB 69 0.1 71 ◎ ◎ 0.12 Example 11 55 • - 45 EB 62 2 75 〇〇 0.13 Example 12 55 • _ - 45 EB 62 0.8 75 〇 ◎ 0.13 Example 13 55 • _ _ 45 EB 62 0.1 75 ◎ ◎ 0.13 Example 14 100 . - . EB 98 5 75 〇 ◎ 0.24 Example 15 100 - - . EB 98 0.5 75 ◎ ◎ 0.24 Example 1 6 _ 70 - 30 EB 120 5 70 ◎ ◎ 0.20 Example J7 _ - 80 20 EB 134 5 70 ◎ ◎ 0.18 Example 18 • 80 • - 20 EB 104 6 74 〇 ◎ 0.65 Example 19 _ 80 - 20 EB 104 74 ◎ ◎ 0.65 Example 20 • 60 _ . 40 EB 117 4 73 ◎ ◎ 0.50 Example 21 40 - - 60 EB 126 5 72 ◎ ◎ 0.15 Comparative Example 1 100 • EB 20 3 82 XX 0.80 Comparative Example 2 100 • • • EB 20 82 X Δ 0.80 Comparative Example 3 100 - EB 20 0.1 82 X Δ 0.80 Comparative Example 4 50 • _ 50 UV 50 20 Δ 〇 0.50 Comparative Example 5 50 1 • 50 UV 50 5 20 Δ Δ 0.50 Comparative Example 6 50 _ 50 UV 50 10 20 XX 0.50 Comparative Example 7 70 • 30 EB 45 0.1 78 Δ 〇 0, 60 Comparative Example 8 70 _ _ . 30 EB 45 5 78 Δ 〇 0.60 Comparative Example 9 70 _ _ 30 EB 45 10 78 XX 0.60 Comparative Example 10 25 • 75 EB 82 10 77 X 〇1.00 Comparative Example 11 39 - - 61 EB 69 10 71 X Δ 1.50

In Table 1, ACMO: N-propylene decylmorpholine, DA-141: 2-hydroxy-3-phenoxypropyl acrylate (manufactured by Nagase ChemteX AG, DA-141), HEAA: N-hydroxyl Ethyl acrylamide, N-MAN: N-methylol acrylamide, NIP AM: N-isopropyl acrylamide, EB: electron ray, UV: ultraviolet light. -53- 129667.doc

Claims (1)

200900761 X. Patent application scope: 1. A polarizing plate characterized in that a transparent protective film is provided on at least one surface of the polarizer via an adhesive layer, and then the agent layer is composed of active energy containing at least one hardening component. The wire hardening type of the adhesive is formed, and the Tg of the subsequent layer is 60. (: Above, and, • The thickness of the adhesive layer is 0.01 to 7 μηι. 2. The polarizing plate of claim 1 wherein Tg(t:) of the adhesive layer is defined as p A , and the adhesive layer is When the thickness (μηι) is defined as B, the numerical calculation formula (1) is satisfied: A-12xB> 58. 3. The polarizing plate of claim 1, wherein the adhesive layer has a gel fraction of more than a weight percentage. The polarizing plate of claim 1, wherein the hardening component is a compound having a (meth)acrylic acid group. 5. The polarizing plate of claim 4, wherein the hardening component contains a general formula (R1 represents a hydrogen atom or a Base, Rule 2 I represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms which may have a hydroxyl group, a mercapto group, an amine group or a quaternary ammonium group, and R3 represents a hydrogen atom or a carbon atom of a linear or branched alkyl group of 1 to 4, which does not contain R2 and R3, and which is a hydrogen atom, or a combination of R2 and R3, which may also contain an oxygen atom, or a ring of 5 members. Substituting the amide-based monomer. 6. The polarizing plate of claim 5, wherein the hydrazine-substituted guanamine system is selected from the group consisting of ν· At least one of ethyl acrylamide, N, methacrylamide, N-isopropyl acrylamide, and N-propenyl morpholine. 129667.doc 200900761 7. Polarization as in claim 5 a plate wherein the N-substituted amide-based monomer comprises N-hydroxyethyl acrylamide and N-propenyl morpholine. 8. The polarizing plate of claim 7, wherein the hydroxyethyl acrylamide is relative to the N - The ratio of the total amount of ethyl acrylamide and N-propenyl morpholine is 4% by weight or more. 9. The polarizing plate of claim 4, which has a curative component and an aromatic ring A monofunctional (meth)propionate of a hydroxy group. The polarizing plate of claim 1, wherein the active energy ray-curable adhesive is an electron beam hardening type adhesive. 11. The polarizing plate of claim 1 The transparent protective film is selected from at least one of a cellulose resin, a polycarbonate resin, a cyclic polyolefin resin, and a (meth)acrylic acid resin. 12. An optical film characterized in that it has a laminate At least one polarizing plate as claimed in item i. 13 - an image display device characterized in For the use of the polarizing plate as claimed in claim 1 0 129667.doc 200900761 VII, the designated representative map: (a) The representative map of the case is: (none) (2) The symbolic symbol of the representative figure is simple: VIII. If there is a chemical formula in this case Please reveal the chemical formula that best shows the characteristics of the invention: (none) 129667.doc