TW200920601A - Adhesive optical film manufacturing method, adhesive optical film and image display device - Google Patents

Abstract

Provided is an adhesive optical film manufacturing method having a step of laminating an adhesive agent layer at least on one side of the optical film. In the laminating step, after performing surface activation treatment to the surfaces to which the laminating step is to be performed, namely, to an optical film surface and an adhesive agent layer surface, the activated optical film surface and the activated adhesive agent layer surface are laminated. The adhesive optical film wherein curling is suppressed with excellent adhesiveness without residual adhesive agent and insufficient adhesive agent is provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive optical film having a step of laminating an adhesive layer on at least one side of an optical film, and a method of manufacturing the same. Further, the present invention relates to an image display device such as a liquid crystal display device using the above-described adhesive optical film, an organic EL (electroluminescence) display device, or a pDp (plasma display panel).

Examples of the optical film include a polarizing plate, a phase difference plate, an optical compensation film, a brightness enhancement film, and the like. Further, the present invention relates to an adhesive property of an optical film and an adhesive layer in an adhesive optical film obtained by laminating an adhesive film when at least one side of an optical film is laminated to produce an adhesive optical film. A method of lifting and suppressing curling of an adhesive optical film. [Prior Art] A liquid crystal display has a polarizing element disposed on both sides of a glass substrate forming the outermost surface of the liquid crystal panel due to its image forming method. Usually, a transparent film is attached to the polarizing film on the outermost surface of the liquid crystal panel. A polarizer on the face or on both sides. In addition, "I have improved the display quality of the display. In addition to the polarizing plate on the outermost surface of the liquid crystal panel, various optical components have also been used: for example, to prevent the phase difference of the coloring, and to improve the viewing angle of the liquid crystal display. Expand the enamel, and enhance the brightness of the display, etc. These films are collectively referred to as optical films. Use = agent on Lt: when it is attached to the outermost surface of the LCD panel. It is possible to temporarily fix the optical cymbal to the liquid crystal surface 134088.doc 200920601 point 'so the adhesive acts as an adhesive layer :: the drying step is superior. That is, the optical film is placed on the outermost surface of the liquid crystal panel. The optical film which is usually required to use the adhesive as the above-mentioned adhesive is attached to the outermost surface of the liquid crystal panel (1), and the foreign matter is mixed on the surface to be placed and bonded, and the outer surface of the wrongly bonded crystal panel is peeled off. Again, the shell can be treated with a change in the size of the optical film due to the change in the size of the optical film. (2) In order to prevent sputum, sa has stress relaxation from A 1 ; (7) For the usual environmental promotion test Durable ★ for the style,: ^ Fen Huan 4 * by heating and humidification, etc. will cause the adhesive agent to cause not only:: ': the secondary processing of the above (1), so far the adhesive type first 'Because the adhesive layer and the optic i are in the 芏 蒋 啊 & & & & & & & & & & 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋 蒋For adhesive residue). The problem on the surface of the board (hereinafter, the display of the liquid crystal panel has recently been crying at 饬s: > °. The problem is toward narrow marginalization, and the defects generated at the end of the storage plate are also combined and lowered. The inhibition of the end of the optical film: the defect that causes the display quality to be obviously lower, and the heart is also a problem. The optical film end and the old one are dry, and β is a bad phenomenon (the following will be the lack of adhesion at the end) In the film of the agent, the optical amine >#,) is caused by the lack of an object at the end of the operation optics. The previous adhesive optical film: the layer of the adhesive layer膘 膘 膘 1 1 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 A method of surface active treatment, such as a plasma, etc. (Patent Documents 1 and 2). These methods are methods for performing a surface active treatment on the surface of the agent layer to make the adhesive layer and the optical film adhere more firmly. However, if the tables are implemented on the adhesive layer In the case of the living J, the adhesive optical film obtained is liable to be curled. Further, when only the surface active treatment is performed on the adhesive layer, the denseness of the two cannot be sufficiently improved according to the material of the optical enamel. In the case of the nature of the present invention, the object of the present invention is to provide a problem to be solved by the present invention. An adhesive optical film and a method for producing the same. The adhesive optical film has an adhesive layer laminated on at least one surface of the optical film, and the curl is suppressed, and the adhesion is good, and no adhesive remains and the adhesive is lacking. An object of the present invention is to provide an image display device using the above-described adhesive optical film. The present inventors have made intensive studies to solve the above problems, and as a result, have found the following adhesive optical manufacturing method and the like. The present invention has been completed. That is, the present invention relates to a method of manufacturing an adhesive optical film having at least one of optical films. The step of laminating the adhesive layer is characterized in that: 134088.doc 200920601 in: the laminating step is performed by Αβ^ on the surface of the optical film surface and the adhesive layer of the laminating step. After the surface treatment of the ruthenium, the surface layer of the optical enamel and the surface of the adhesive layer are subjected to the active treatment. In the method for producing the adhesive optical film, the surface treatment is preferably selected from the above. Any at least one of treatment, corona discharge treatment, ultraviolet treatment, electron beam treatment, and ozone treatment.

C is the above-mentioned surface-active film, and is preferably at least 5 kinds selected from the group consisting of nitrogen, oxygen, ammonia, argon and helium. The money is processed in the gas. Further, it is preferred that the surface treatment of the surface of the optical film and the surface of the adhesive layer is performed by an electric t treatment, and the plasma treatment is performed on at least one surface of the surface of the optical film and the surface of the adhesive layer. It is carried out in a gas containing oxygen. Further, the present invention relates to an adhesive type optical film obtained by the above-described manufacturing method. Further, the present invention relates to an image display apparatus using at least one of the above-mentioned adhesive optical films. The adhesive type optical yoke of the present invention can be used in one or a combination of a plurality of use states I ′ corresponding to a liquid crystal display device or the like. Further, the present invention relates to a method for producing an adhesive optical film, wherein when an adhesive film is laminated on at least one side of an optical film to produce an adhesive optical film, the surface of the optical film and the adhesive layer are laminated. On the surface of U4088.doc 200920601, the surface of the optical film and the surface of the adhesive layer of the left surface of the 3 亥 , , , , , , , , , , , , 借 借 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚 抚The film and the adhesive squeegee are provided with a layer of the agent and suppress the curl of the adhesive type optical film. Advantageous Effects of Invention In the method of making and attaching an adhesive optical film of the present invention, after surface treatment is performed on any surface of the surface of the optical film and the surface of the adhesive layer, the surface treated by the surface treatment is applied. Fit each other. According to Seiko's above-mentioned surface treatment treatment, the curl can be suppressed, and the B and the various optical films and the adhesive layer are good, and there is no sticking, no residue, no adhesive adhesion. The type of light is caused by the surface of the surface of the optical film and the surface of the adhesive layer, and the curl is suppressed and the adhesion is improved. However, it is generally considered that the surface treatment is performed on the two surfaces. The active group such as a base group, a carbon group, a slow base group, and a peroxide group is increased to make the surface polar, whereby the adhesion is obtained by L. In addition, it is generally considered that by bonding the above two sides of the polarization, 'θ The adhesion at the interface of the laminate is improved, and the stress balance of the optical side and the adhesion can be improved and the curl is suppressed. 』艾付民好, from [Embodiment] The method of the adhesive type optical film of the present invention is carried out by placing the adhesive film of the adhesive film on at least one side of the optical film on one side of the optical film. The 'adhesive layer can be set on both sides of the optical film. In the formation of the adhesive layer, a suitable adhesive is used, and there is no particular limitation on the type of the adhesive. The rubber adhesive is 134088.doc 200920601, an acrylic adhesive, and a coating agent. A vinyl alkyl ether-based olefin pyrrolidone-based adhesive, a coating agent, and the like. Ju Shi Xi Oxygen Adhesive, Shi #香-amine taurate adhesive, polyvinyl alcohol for sale, adhesive, polyethyl propylene amide, _, i ^ It is excellent in the properties of the display, and it is preferable to use the adhesive such as C, and it is preferable to use an excellent optical wettability, cohesiveness, and adhesiveness. As a person who exhibits such characteristics, a dilute acid 糸 adhesive. As the acrylic polymer, an acrylic polymer having a monomer unit of (meth)-propylacetoic acid as a main skeleton is used as a base polymer. Further, the alkyl (meth) acrylate refers to an alkyl acrylate acrylate and/or an alkyl methacrylate ‘, which has the same meaning as the (meth) of the present invention. The (meth)(tetra) acid filament g which is the main skeleton constituting the acrylic polymer is τ. The number of carbon atoms of the linear or branched alkyl group is 丨~汕. For example, (mercapto) methyl acrylate, (meth)acrylic acid ethyl acrylate, (meth)acrylic acid propylene vinegar, (meth)acrylic acid butyl sulfonium (meth) acrylate 2-ethylhexyl acrylate, (曱) Base) isooctyl acrylate, isodecyl (meth) acrylate, isomyristyl (meth) acrylate, (methyl) propylene I lauryl ester, and the like. These may be used singly or in combination. The average carbon number of the alkyl groups is preferably from 3 to 9. For the purpose of improving adhesion or heat resistance, one or more comonomers may be introduced into the above acrylic polymer by copolymerization. Specific examples of such a comonomer include, for example, 2-hydroxyethyl (meth) acrylate, 2-propyl propyl (meth) acrylate, and 4-hydroxybutyl (meth) acrylate. Methyl)acrylic acid 6-hexane vinegar, 8-hydroxyoctyl (meth)acrylate, (hydroxy)acrylic acid 10-hydroxy 134088.doc 200920601 brewed, (mercapto)acrylic acid 12-hydroxylauryl ester or acrylic acid (4 a monomer having a hydroxyl group such as -hydroxymethylcyclohexyl)decyl ester; (meth)acrylic acid, (meth)acrylic acid ethyl acrylate, (meth)acrylic acid carboxypentyl ester, itaconic acid, and butylene a monomer containing a carboxyl group such as an acid, a fumaric acid or a crotonic acid; an acid anhydride group-containing monomer such as maleic anhydride or itaconic acid anhydride; a caprolactone adduct of acrylic acid; a styrenesulfonic acid or an ene group Propyl sulfonic acid, 2_(meth) acrylamide _2 2 曱 propyl propyl phthalic acid, (fluorenyl) acrylamide propyl sulfonic acid, sulfopropyl (meth) acrylate, (meth) propylene hydride a monomer containing a sulfonic acid group such as oxynaphthalenesulfonic acid; a monomer containing a phosphate group such as 2-hydroxyethyl propylene phthalate or the like. Further, examples of the monomer for the purpose of modification include (fluorenyl) acrylamide, N,N-dimercapto (meth) acrylamide, N-butyl (decyl) acrylamide or N- (N-substituted) guanamine monomer such as hydroxymethyl (fluorenyl) acrylamide, N-methylolpropane (fluorenyl) acrylamide; (amino) (mercapto) acrylate, (methyl) N,N-dimethylaminoethyl acrylate, alkylaminoalkyl (meth) acrylate such as tert-butylaminoethyl (meth) acrylate; (meth) acrylate (Alkyl)acrylic acid alkoxyalkyl ester monomer such as ethyl ethyl ester or ethoxyethyl (meth)acrylate; N-(indenyl) propylene oximeoxymethylene butyl quinone imine or N -(fluorenyl)propenyl-6-oxyhexamethylenebutaneimine, N-(methyl)propenyl-8-oxyoctamethylenebutylimine, propylene fluorenyl a butyl quinone imine monomer such as morpholine; N-cyclohexyl maleimide or N-isopropyl succinimide, N-lauryl maleimide or]si - maleic acid imide monomer such as phenyl maleimide N_曱基伊康醯iamine, N-ethyl Ikonideimine, N-butyl Ikonitolimine, N-octylkonkineimine, N-2-ethylhexyliconazole Imine, cyclohexyl Icahn 醯 134088.doc • 12- 200920601 Ionide, N-Lauryl Ikonide, and other Ikonide imine monomers. Further, as a modifying monomer, vinyl acetate, ethyl vinegar propionate, N-vinyl pyrrolidone, methyl vinyl pyrrolidone, ethylene oxapyridine, vinyl piperidone, vinyl pyrimidine, ethylene can also be used. Piperazine, vinylpyridinium, ethylene dipyridyl, vinyl-flavored a-seat, ethyl-salt saliva, ethionylmorpholine, oxime-vinyl carboxylic acid decylamine, styrene, alpha-A Vinyl monomers such as styrene, vinyl caprolactam; cyanoacrylate monomers such as acrylonitrile and methyl acrylonitrile; and epoxy groups such as glycidyl (meth)acrylate Propionic acid monomer; (meth)acrylic acid polyethylene glycol vinegar, (meth)acrylic acid polypropylene glycol ester, (meth)acrylic acid methoxyethylene glycol ester, (meth)acrylic acid methoxy a diol-based acrylate monomer such as a polypropylene glycol ester; (meth) methacrylate, fluoro (meth) acrylate, poly methoxy (meth) acrylate or 2-methoxyethyl acrylate; An acrylate monomer or the like. The ratio of the above comonomer in the acrylic polymer is not particularly limited, and in the weight ratio of all the constituent monomers, the ratio of the above comonomer is preferably about 3030%, more preferably 〇丨~ ^% or so. Among these comonomers, a monomer having a hydroxyl group or a monomer having a carboxyl group is preferably used from the viewpoint of adhesion and durability. These monomers form a reaction point with the parent reagent. Since the monomer containing a radical group, a monomer containing a thiol group, and the like are rich in reactivity with an intermolecular crosslinking agent, it can be preferably used for improving the cohesiveness or heat resistance of the obtained adhesive layer. In the case where the hydroxyl group-containing monomer and the carboxyl group-containing monomer are used as a comonomer, among the weight ratios of all the monomers to be prepared, the preferred "acrylic acid polymer contains 88 to 99.89 wt%. (Mercapto) alkyl acrylate, 〇.1~1〇134088.doc -13- 200920601 Weight. /. The monomer containing the m group and the monomer containing the base group in an amount of 1 to 2% by weight of ruthenium. The alkyl (meth)acrylate is more preferably 9〇5 to 9977 wt%, and further preferably 疋93 99.35 wt% of the monomer having a carboxyl group is more preferably 2 to 8 wt%, and thus more preferably It is 〇·"% by weight. It is better to contain ruthenium monomer 0.03~1.5 〇/〇, and more preferably 〇 0^% by weight. The average molecular weight of the propylene S-based polymer is not particularly limited, and the weight average knife is preferably about 300,000 to 250,000. The above-mentioned acrylic polymer can be produced by various known methods, for example, A radical polymerization method such as an integration method, a solution polymerization method, or a suspension polymerization method is selected. As the radical polymerization initiator, various males of an azo-based or peroxide-based system can be used. The reaction temperature is usually about 5 G to 8 (about rc, and the reaction time is two: in the above production method, a solution polymerization method is preferred, and as a solvent for the acronym, acetic acid, toluene, etc. may be used. 'The curvature is usually set to about 2〇~80% by weight. Inch, it is difficult to make the above adhesive into an adhesive containing a crosslinking agent: a compound. It can be crosslinked as a functional compound that can be formulated in an adhesive. The agent or the polyfunctional metal chelate ruthenium "has been used as an organic ruthenium cross-linking agent, and can be used as a cross-linking isocyanuric acid-based agent, a peroxide-based crosslinking agent, and the like. These cross-linking agents may be used in combination of two or more kinds. As an organic cross-linking or "crosslinking agent. The polyfunctional metal integrase is a polyvalent metal sub-acid vinegar-based valence clock gentleman ^^ > · 'genus / organic compound ϋ · · or coordination bond. For A1, cr, Zr, CQ, Cu, Fe, Ni, ^ metal atom, can be cited as: 1 荨. As a covalent bond 134088 .doc -14- 200920601 The atom in the organic compound of the knot or the coordinate bond, the organic compound, and the oxygen atom Your organic compound can be listed as: ketone vinegar, alcohol compounds, mystery compounds, _ compounds, etc. The ratio of base polymer and crosslinker, such as 1 'polymer, is profitable and hoisted, relative to (10) The basis weight of the base polymer (solid form (W (solid form) is preferably about 0.001 to 20 parts by weight, more preferably 0.01 to 15 parts by weight p - for cyanic acid.) It is preferred that the base polymer (the solid-type crosslinking agent is preferably about 0.001 to 2 parts by weight, more preferably about 0.01 to about 9 parts by weight, based on 10 parts by weight of the base polymer). Furthermore, within the scope of the purpose of the target, the filler containing the tackifier, the plasticizer, the glass fiber, the knives, other inorganic powders, etc. may be appropriately used as needed. , pigment, two, true charge, antioxidant, UV absorber, decane coupling agent and other additives. In addition, Gan +

L-adhesive layer, etc. 〃', can be made to contain fine particles and show light diffusion 夕 = as an additive 'better is Shi Xi Yuan coupling agent' relative to 100 parts by weight of the base polymer (solids), preferably blending please ^ (four) coupling W solids), it is better to mix 5 2 as (4) coupling agent, can use unlimited 134 〇 88.d〇c 200920601 (aminoethyl)-3-aminopropylmethyldimethoxy Amino-containing decane coupling agent such as decane, 3-triethoxydecyl-N-(l,3-dimethylbutylidene)propylamine, 3-propenyloxypropyltrimethoxy decane a decane coupling agent containing an isocyanate group such as a (meth) propylene group-based sulphur coupling agent such as a 3-methyl methacrylate methoxy propyl diethoxy oxysyl sulphate or a trisocyanate propyl triethoxy decane. . As an optical film used in the adhesive optical cartridge of the present invention, for example

U can be cited as a polarizing plate. The polarizing plate usually uses one of the polarizers or a transparent protective film on both sides. The polarizer is not particularly limited, and various kinds of polarized light can be used. For example, a dichroic substance such as an angrene or a dichroic dye = a polyvinyl alcohol film, a partially formalized polyvinyl alcohol film, or ethylene-acetic acid can be used. The ethylene-stretched copolymer is a polyene-based alignment film such as a dehydrated product of a uniaxially stretched vinyl alcohol or a dehydrochlorinated product of a polystyrene, such as a partially saponified film. Among these, a polarizer containing a polyethylene-based film and a dichroic substance such as iodine is preferred. The thickness of the polarizers is not particularly limited and is usually about 5 to 80 μπι. : Wood-colored polyvinyl alcohol-based film and uniaxially extended polarizer can be made by the following method 'for example' II by impregnating polyvinyl alcohol with: two pairs of escape aj, combined with the drink and extending it Up to 3 to 7 times the original length. If necessary, the alcohol may be immersed in an aqueous solution which may contain a hardened or zinc sulphate, zinc hydride or the like. Further, if necessary, the crucible is impregnated with wood, and the polyvinyl alcohol is removed from the flat 7 β ^ / V-free vinyl film, and the surface of the A-enol film is made of dirt or an anti-caking agent. 134088.doc 200920601 Vinyl alcohol film swelling also has the effect of preventing uneven dyeing. The stretching may be carried out after dyeing with iodine, or may be, for example, using boric acid or potassium iodide, which is excellent in thermal plasticity such as transparency, mechanical isotropy, or the like, and may be dyed and extended. Extending in an aqueous solution or in a water bath. As a material constituting a transparent protective film, strength, thermal stability, and moisture barrier property

Resin. Specific examples of such a thermoplastic resin include cellulose resins such as ':, dicellulose, polyester resin, ether sulfone resin, polysulfone resin, polycarbonate resin, polyamide resin, and polyimide resin. , polythene (4), (meth)acrylic resin, cyclic polyalkylene resin (norbornene resin: dimeric aromatic vinegar resin, polystyrene resin, vinyl alcohol resin and the like) Further, 'on one side of the polarizer' #A transparent protective film is attached from the adhesive layer', and on the other side, (meth)acrylic acid, urethane type, acrylamide carboxylic acid can be used. A thermosetting resin such as an ester type, an epoxy type or a polyoxymethylene type, or an ultraviolet curable resin is used as a transparent protective film. The transparent protective film may contain one or more optional additives. As an additive, for example, ultraviolet rays may be listed. Absorbent, antioxidant 'lubricant, plasticizer, mold release agent, anti-coloring agent, flame retardant, nucleating agent, antistatic agent, pigment, colorant, etc. The above thermoplastic resin is contained in the transparent protective film ΐ is preferably 50~1〇〇% by weight More preferably, it is 5 to 99% by weight, further preferably 60 to 98% by weight, particularly preferably 70 to 97% by weight. The content of the above thermoplastic resin in the transparent film is less than 50%. In the case of the weight %, there is a concern that the thermoplastic resin does not sufficiently exhibit the high transparency and the like. 134088.doc 200920601 In addition, as a transparent protective film, Japanese Patent Laid-Open Publication No. 2001-343529 (W001/37007) The polymer film described in the above, for example, contains (A) a thermoplastic resin having a substituted and/or unsubstituted quinone imine group on the branch and (B) a substituted and/or unsubstituted phenyl group and a nitrile on the branch. The resin composition of the thermoplastic resin is a specific example, and a resin composition containing an alternating copolymer of isobutylene and N-methylbutyleneimine and an acrylonitrile-styrene copolymer is exemplified. As the film, a mixed extrusion product containing a resin composition or the like can be used. Since the phase difference is small and the photoelastic coefficient is small, unevenness due to strain of the polarizing plate can be eliminated, and Since the film has a small moisture permeability, it is excellent in humidifying durability. The thickness of the transparent protective film can be appropriately determined, and it is usually about 1 to 500 μηι in terms of workability such as strength and workability. It is especially good when the transparent protective film is 5 to 15 〇 〇 in the case of 1 to 300 μηι, more preferably 5 to 2 。. In addition, when a transparent protective film is provided on both sides of the polarizer, As the back of the watch, a protective film containing the same polymer material may be used, and a protective film containing different polymer materials or the like may be used. As the transparent protective film of the present invention, it is preferred to make (iv) from the cellulose tree sorghum, polyglycolic acid. Any of at least one of a resin, a cyclic olefinic resin, and a (meth)acrylic resin. The phylin cellulose resin is a vinegar of cellulose and fatty acid. Specific examples of such a cellulose-based resin include triethyl hydrazine cellulose, acetamidine fiber, dipropylene phthalocyanine, and diacetyl vegan. Among these, particularly good 234088.doc -18- 200920601 2 acetyl cellulose. Triacetin cellulose is commercially available with more products, which is also advantageous from the standpoint of being profitable or cost. Examples of the commercial products of the triacetone cellulose include the trade names "〇' 5〇", "UV_8G", "SH_8Q", "TD•Caf", and "τ〇·AC" manufactured by FUJIFILM. "UZ-TAC" or "Kc series" manufactured by Konica Corporation, etc. The phase difference (Re) in the surface of "Sanhai, etc." is almost zero, and the phase difference (Rth) in the thickness direction is 〇~6〇. Further, the cellulose resin film having a small retardation in the thickness direction can be obtained, for example, by treatment with a cellulose resin. For example, there are: pentylene, methyl ethyl ketone, etc. The substrate film of a solvent such as polyethylene terephthalate polypropylene or stainless steel is bonded to a cellulose-based film L like a film to be heated and dried (for example, dried under the conditions of (10) for about 3 to 10 minutes). a method of dissolving a norborne resin, a (meth)acrylic acid system 2, or the like in a solvent such as cyclopentamidine or methyl ethyl ketone, and forming a solution on the cellulose resin crucible of the slave. Heat drying (for example, 80~150

A method of peeling off the coated crucible after drying in C for about 3 to 1 minute, and further, as a cellulose resin crucible having a small retardation in the thickness direction, a fatty acid cellulose resin film having a fat substitution degree can be obtained. Generally, the degree of substitution of acetic acid of::acetamidine cellulose is about 28, and it is preferable to control the range of U~2·7 by the degree of ^^(four) to reduce enthalpy. In the above fat-sucking cellulose-based resin, it is possible to add phthalic acid di J 酉曰, Dong + formazan

Rth. The plasticizers such as sulfonamide and ethyl citrate triethyl ester are used to control Kth to be compared with 丨, r. Compared with 100 parts by weight of the fatty acid cellulose tree, the plasticizer is preferably used in an amount of 40 parts by weight or less, more preferably 134088.doc 19 200920601 1 to 20 parts by weight, and further More preferably, it is 〜 15 parts by weight. As a cyclic polyolefin resin. The ring-shaped flue-cured tree: the specific example of 'the best is the general name of the resin of the borneol tree, ^ the ring-shaped diluted hydrocarbon as the polymerization unit for polymerization' can be cited as the patent special opening 1-2405171# eight Patent Publication No. 3~_, and Japanese Patent Laid-Open No. 122137137, etc., open the opening of the +3_ring (tetra) hydrocarbon. Specific examples are exemplified by the addition of olefins such as olefins such as ethylene and propylene, and the like, and the addition of olefins and their copolymers (representatives are I. a polymer, a graft polymer, and a chloride, etc., which are unsaturated (tetra) or a derivative thereof, and examples of the cyclic thin smoke include a norbornene-based monomer. There are various commercially available products. As a specific example, the product name "Ji Ying" and "ZE_R" manufactured by Nippon Steel Co., Ltd., and the product name "ARTON" manufactured by the company, TIC〇NA "TOPAS" is a product name "APEL" manufactured by Mitsui Chemicals Co., Ltd. As a (meth)acrylic resin, Tg (glass transition temperature) is preferably ii5t or more, more preferably 12 (rc or more). Further, it is more preferably 125. The above is particularly preferably 13 G ° C or more. The Tg is 115. The above is sufficient to make the polarizing plate excellent in durability. The above (meth)acrylic resin is § The upper limit is not particularly limited, and the viewpoint of formability and the like is not particularly limited. In other words, it is preferably at least 70 ° C. The in-plane retardation (Re) and the thickness direction retardation (Rth) are almost zero from the (fluorenyl) acrylic resin. 134088.doc -20· 200920601 As the (fluorenyl) acrylic resin, any suitable (meth)acrylic resin can be used as long as it does not impair the effects of the present invention, and examples thereof include poly(fluorenyl) such as polymethyl methacrylate. Acrylate, methacrylic acid-(mercapto)acrylic acid copolymer, decyl methacrylate _(mercapto)acrylic acid styrene copolymer, methyl methacrylate-acrylate _(meth)acrylic acid copolymer Methyl (meth) acrylate-styrene copolymer (MS resin, etc.), a polymer having a aliphatic % hydrocarbon group (for example, 'methyl methacrylate-cyclohexyl methacrylate copolymer, methyl methacrylate _(Meth)acrylic acid norbornene ester copolymer, etc.), preferably a poly(meth)acrylic acid C1-6 alkyl ester such as poly(methyl methacrylate), etc., more preferably Ethyl acrylate is the main component (50~1〇〇% by weight' The methyl methacrylate resin is preferably 7 〇 to 1 重量% by weight. Specific examples of the (meth) acryl resin include, for example, ACRYPET VH manufactured by Mitsubishi Rayon Co., Ltd. or ACRYPET VRL20A, which is a high-molecular (meth)-based acrylic resin having a ring structure in the molecule described in Japanese Patent Laid-Open Publication No. Hei. (Meth)acrylic resin. As the (meth)acrylic resin, a (meth)acrylic resin having a lactone ring structure can be used because of its high heat resistance and high transparency. Biaxial extension with high mechanical strength. Examples of the (meth)acrylic resin having an internal vinegar ring structure include: Japanese Patent Laid-Open Publication No. 2000-230016, Japanese Patent Laid-Open No. 151814, and Japanese Patent Laid-Open No. 2〇〇2_12〇326 Japanese Patent Laid-Open No. 254544, Japanese Patent Special Open Fan (4) Lai 134088.doc • 21 · 200920601 The vinegar-structured (曱-based) acrylic acid tree bulletin, etc. fat. The (meth)acrylic resin having a ring structure preferably has a lower ring structure (the ring structure represented by D). COORS Β3 l 2 R and R each independently represent a hydrogen atom or carbon. An organic residue having an atomic number of 〜. Further, the organic residue may contain an oxygen atom. , ', %,,,,,,,,,,,,,,,,,,,,,,, 1) The 酉 酉 酉 酉 酉 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉 吉%, and further preferably 1〇~6〇% by weight 'Specially good is 1 0~mudan./ 4 重里/〇. Right has a lactone ring structure (the structure of the methacrylic resin is When the content ratio of the lactone ring structure represented by the formula (Chemical Formula 1) is less than 5% by weight, heat resistance, solvent resistance, and surface hardness may be insufficient. In the structure of a (mercapto)acrylic resin having a lactone ring structure, U.g.··^ 4 T t has a general formula (3 of the lactone ring structure represented by hydrazine) There is a lack of The possibility of shape-enhancing property. The mass average molecular weight (also known as the weight average molecular weight) of the (meth)-propyl-glycolic acid resin having an internal vinegar ring structure is preferably _~2_ coffee is more preferably 5000 〜1000000, and more preferably 10000~5_00, particularly preferably 5_0~5_00. If the mass average molecular weight is outside the above range, the formability is not good. 134088.doc -22· 200920601 having a lactone ring structure (1) c or more of the (meth)acrylic resin, more preferably 12 generations or more, and even more preferably 125 = upper 'particularly good is mm. Since T is more than 115 〇c, for example, it is transparent. When the protective film is incorporated in a polarizing plate, the polarizing plate is excellent in durability. The above (meth)acrylic resin having a (four) ring structure

The upper limit of the Tg is not particularly limited, and is preferably 170 ° C or less from the viewpoint of moldability and the like. X / (meth)acrylic resin having an internal S ring structure, and the use of the molded article obtained by injection molding is higher as the total light transmittance measured by the method of ASTM_D_丨〇〇3 Well, it is better to be 85% or more, better = more than hop, and more preferably more than 9%. This line transmittance is a standard of transparency. If the total light transmittance is less than 85%, there is a possibility that the transparency is lowered. The above transparent protective film generally uses a front phase difference of less than 40 nm and a thickness phase difference of less than 8 〇 11 „1. The front phase difference is represented by ^ = (ηχ_ ny)xd. The thickness direction phase difference Rth is Rth= (nx-nz)xd indicates that the Nz coefficient is expressed by Nz=(nx_nz)/(nx_ny). [The towel has the refractive index of the film in the slow axis direction, the fast axis direction, and the thickness direction as η" η" Ηζ' sets d(nm) as the thickness of the film, and the slow axis direction is the direction in which the refractive index in the facet is maximized. Further, it is preferred that the transparent protective film is not colored as much as possible. A protective film having a phase difference in the thickness direction of .90 _ to +75 _ is used. By using the phase difference (Rth) of the thickness direction described above as 90 nm +75 nm, the polarizing caused by the transparent protective film can be substantially eliminated. The color of the board (optical coloring). The phase difference in the thickness direction (the sound is better and better I34088.doc •23- 200920601 is -80 nm~+60 nm, especially good is _7〇nm~+45 _. In addition, as the transparent protective film, a front phase difference of 40 nm or more and/or a thickness direction phase difference of 80 nm may be used. The phase difference plate of the phase difference is generally controlled within a range of 4 〇 to 2 〇〇 nm, and the phase difference in the thickness direction is controlled within a range of 8 〇 to 3 〇〇 nm. In the case of a transparent protective film, since the retardation film can function as a transparent protective film, it can be made thinner.

Examples of the retardation film include a birefringent film formed by subjecting a polymer material to uniaxial or biaxial stretching treatment, an alignment film of a liquid crystal polymer, and an alignment layer supporting a liquid crystal polymer. The thickness of the phase difference plate is also not particularly limited, and is usually about 2 〇 15 15 μηι. Examples of the polymer material include polyethlycol, polybutylene aldehyde, polymethyl vinyl ether, polyhydroxyethyl acrylate, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, and poly Carbonic acid vinegar, polyarylate, polysulfone, polyethylene terephthalate, polyethylene naphthalate, polyethersulfone, polythioether, polyphenylene ether, polyarylsulfone, polyamine , polyimine, polyolefin, polyvinyl chloride, cellulose resin, cyclic polysulfonated resin (norborning resin) or these two, ternary copolymers, graft copolymers, Mixture, etc. These polymer materials are oriented (extension film) by stretching or the like. As the liquid crystal polymer, for example, a main chain type or a branched type liquid crystal polymerization in which a linear atomic group (liquid crystal primordium) which imparts a liquid crystal alignment property is guided to a main chain or a branch of a polymer is exemplified. Things. Specific examples of the main chain type crystal polymer include an interval of imparting flexibility (I34088.doc -24 - 200920601), and . Specific examples of the structure of the liquid crystal nucleus such as a chelating compound, a disc-type polymer or a cholesteric polymer, etc., of the == polycrystalline liquid crystal polymer include: a vinegar of a branched type, a milky appearance thereof, and a polypropylene An acid-like β-methyl acetoacetate or polymalonic acid vinegar, which comprises a liquid crystal primordial group containing a liquid crystal primordial group of two (================================================================= The material is obtained by, for example, performing a rubbing treatment on the surface of a film formed of glass plate amine or polyethylene (tetra) to form a liquid crystalline polymer on a surface of a oxidized ore oxidized stone or the like, and performing a heat treatment. The retardation plate may have a suitable phase difference corresponding to the purpose of use, for example, for the purpose of compensating for coloring or viewing angle caused by birefringence of various wavelength plates or liquid crystal layers, or may be two or more layers. The phase difference plate controls the optical characteristics such as the phase difference. a phase difference plate satisfying the relationship of nx=ny>nz, nx>ny>nz, nx>ny=nz, nx>nz>ny, nZ=nX>ny,nz>nx>ny,nz>nx=ny It is chosen for use in various applications. Furthermore, the so-called ny=nz means not only the case where 叮 is completely the same as nz, but also the case where the town is substantially the same. For example, a phase difference plate satisfying nx > ny > nz is preferably used in a case where the front phase difference is 40 to 1 〇〇 nm, the thickness direction phase difference is 1 〇〇 32 〇 ηιΏ, and the Nz coefficient is 1.8 to 4.5. For example, a phase difference plate (positive a plate) satisfying nx > ny = nz is preferably used in a case where the front phase difference is 〇〇 〇〇 2 〇〇 nm. For example, a phase difference plate (negative a plate) satisfying nZ = nx > ny is preferably used in a case where the front phase difference is 1 〇〇 to 200 nm. For example, it is preferable to satisfy the phase difference of nx > nz > ny 134088.doc 25 - 200920601. The plate is preferably used to satisfy a front phase difference of 1 50 to 300 nm and an Nz coefficient of 0 to 0.7. Further, as described above, for example, η χ = ny > nz , nz > nx > ny or nz > nx = ny can be used. The transparent protective film can be appropriately selected corresponding to the liquid crystal display device to be applied. For example, in VA (Vertical Alignment; including MVA (Multi-domain Vertical Alignment) PVA (Patterned Vertical Alignment)

In the case of the column)), it is preferable that the transparent protective film on at least one side (unit side) of the polarizing plate has a phase difference. As a specific phase difference, a range of Re = 0 to 240 nm and Rth = 0 to 500 nm is preferable. In terms of the three-dimensional refractive index, it is preferable that nx > ny = nz, nx > ny > nz, nx > nz > ny, np ny > nz (positive a plate, double axis, negative (^ plate) case. It is preferable to use a combination of a positive A plate and a negative c plate, or a double biaxial film. When a polarizing plate is used above and below the liquid crystal cell, the liquid crystal cell has a phase difference above and below, or any transparent upper and lower. The protective film may have a phase difference. For example, in the case of IPS (In-Plane Switching 'transverse electric field switching; including FFS (Fringe Field Switching)), a transparent protective film on one side of the polarizing plate may be used. Or, in the case where there is no phase difference, for example, when there is no phase difference, it is preferable that the liquid crystal cell has no phase difference between the upper and lower sides (unit side). Preferably, the liquid crystal single /, ^ ^ ^ > has a phase difference t, and the shape 'or any of the upper and lower sides has a phase difference (for example, the upper side has a biaxial 满足 satisfying the relationship of nx > nz > ny No phase difference on the lower side, or upper side When entering the board, the lower side has it, and 1 is the case. When 134088.doc -26- 200920601 has a phase difference, it is ^^^^^曰I month~Τ竿 and ideally Re=_5〇 〇~500 nm,

Rth = -500 to 500 nm range. Preferably, in terms of three-dimensional refractive index, nx > ny = nz, nx > nz > ny, nz > nx = ny, nz > nx > nWi A plate, biaxial, positive C plate). Further, the above-mentioned film having a phase difference can be attached to a transparent protective film having no phase difference to impart the above-mentioned function. Before the adhesive is applied to the above transparent protective film, it may be subjected to surface modification treatment in order to improve its adhesion to the polarizer. Specific examples of the treatment include corona treatment, electropolymerization treatment, frame treatment, ozone treatment, primer treatment, glow treatment, deuteration treatment, and treatment with a coupling agent. In addition, an antistatic layer can be formed as appropriate. The surface of the transparent protective film which is not adjacent to the polarizer may be a hard coating or an anti-reflection treatment, and a treatment for the purpose of anti-adhesion or diffusion or anti-glare. For the purpose of hardening, the treatment system (4) for the purpose of damage to the surface of the polarizing plate, etc., the hardness or sliding property formed by the appropriate ultraviolet curing (four) grease such as the C-based system and the poly-stone system can be excellent. The hardened film is formed by being applied to the surface of the transparent protective film or the like. The antireflection treatment is carried out for the purpose of preventing reflection of light outside the surface of the polarizing plate, which can be achieved by the formation of an antireflection film or the like which has been previously standard. Further, the anti-" is implemented for the purpose of preventing the male (4) layer (for example, the diffusing plate on the backlight side). In addition, the anti-glare treatment is carried out for the purpose of preventing reflection of external light on the surface of the polarizing plate and obstructing the visibility of the light transmitted through the deflecting plate, and may be performed by sandblasting or by way of example, 134088.doc •27·200920601 or The surface of the transparent protective film is formed by a fine-graining method of a chemical addition method or a method of blending a transparent U-pole, and is formed by a medium::: structure. As the above-mentioned surface fine concavo-convex structure, it is possible to use, for example, an average particle diameter of 0.5 to 20 (four) 匕 3 - cerium oxide, aluminum oxide, phase technique _ emulsified titanium emulsified cerium, tin oxide, oxidized into six emulsification @ I Inorganic fine particles having conductivity, such as ruthenium, and the like, and transparent fine particles such as organic fine particles such as a polymer of 9 or unlinked. In the case of forming a fine uneven structure on the surface, a transparent resin having a surface fine uneven structure is formed with respect to a weight of 1 Å, and the amount of fine particles used is about 2 to 70 parts by weight, preferably 5 to 5 parts by weight. Share. The anti-glare layer may be a diffusion layer (angle-expanding function, etc.) which has a diffused polarizing plate that transmits light and expands a viewing angle or the like. Further, the antireflection layer, the anti-adhesion layer, the diffusion layer or the anti-glare layer may be provided as a transparent protective film itself, or may be provided separately as an optical layer, that is, different from the transparent protective film. The use of the above-mentioned polarizer and the transparent protective film is followed by the use of an adhesive. (2) The adhesive is an 'isocyanate-based adhesive, a polyvinyl alcohol-based adhesive, a gelatin-based adhesive, an ethylene-based latex, or an aqueous polyester. The above-mentioned extender is usually used as an adhesive containing an aqueous solution, and usually contains 0.5 to 60% by weight of a solid content. In addition to the above, examples of the binder of the polarizer and the transparent protective film include an ultraviolet curable adhesive, an electron beam hardening adhesive, and the like. The electron beam-curable polarizing plate exhibits a good adhesion to the above various transparent protective labels by an adhesive. Further, the adhesive used in the present invention may contain a metal compound filler. 134088.doc •28· 200920601 Further, examples of the optical film include a reflector or a reverse transmission plate, the retardation plate (including a wavelength plate such as 1/2 or 1/4), a visual compensation film, a brightness enhancement film, and the like. It is used to form an optical layer of a liquid crystal display device or the like. These can be used as an optical film alone. You can use one, two or more layers on the polarizing plate when it is used. Particularly preferably, a reflective polarizing plate or a semi-transmissive polarizing plate formed by laminating a reflecting plate or a semi-transmissive reflecting plate on a polarizing plate, and a polarizing plate or circularly polarized light formed by laminating a phase difference plate on a polarizing plate. A plate, a wide viewing angle polarizing plate formed by laminating a visual compensation film on a polarizing plate, or a polarizing plate formed by laminating a brightness enhancing film on a polarizing plate. The reflective type weave is a liquid crystal display device of a type in which a reflective layer is provided on a polarizing plate, and is formed by a person who reflects a light from a viewing side (display side) and displays it. The light source is built in, and the liquid crystal display device can be easily thinned. The formation of the reflective polarizing plate may be performed by a transparent transparent protective reflective layer attached to the surface of the polarizing plate, if necessary:: 0: A specific example of the reflective polarizing plate is as follows: It is necessary to attach a reflective metal or a vaporized ore film such as a cover to the surface of the matte transparent film to form a reflective layer. Further, the transparent protective ruthenium containing fine particles to form a surface fine uneven structure and having a fine core structure reflective layer thereon may be used. The fine concavo-convex junction-shaped reflective layer has the advantage of preventing the directional or glaring appearance by diffusing the incident light by diffuse reflection, and suppressing the unevenness of light and dark. In addition, 134088.doc -29. 200920601 contains microparticles. The ruthenium film also has the advantage that the incident light and the reflected light are diffused through it to further suppress uneven brightness and the like. The reflection layer of the fine uneven structure reflecting the surface fine concavo-convex structure of the transparent protective layer can be directly attached to the transparent protection by, for example, a vacuum deposition method, an ion plating method, a semantic method, or an electric chain method. The method on the surface of the layer or the like is performed. The reflecting plate can also be used as a reflecting sheet formed by providing a reflecting layer on a suitable film having a transparent film as a standard, and the reflecting plate can be directly applied to the transparent protective film of the polarizing plate. Μ, since the reflective layer usually contains a metal, the reflective surface is protected by a transparent protective film or a polarizing plate, and the reflectance caused by oxidation is prevented from being lowered, and the initial reflectance is sustained for a long period of time, or another It is preferable to attach a protective layer or the like, and the semi-transmissive polarizing plate can be obtained by reflecting the above-mentioned reflective layer as a semi-transmissive reflective layer such as a half mirror which 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. When the liquid crystal display device is used in a relatively bright environment, it is made from the observation side. The incident light on the (display side) is reflected and displayed, and in a relatively dark environment, an image is displayed using a built-in power source such as a backlight built in the back surface of the semi-transmissive polarizing plate. That is, the 'semi-transmissive polarizing plate is useful for forming a liquid crystal display device of the type that can save the energy of a light source such as a backlight in a bright environment. 'The built-in power source can also be used in a relatively dark environment. And use. 134088.doc -30- 200920601. An elliptical polarizing plate or a circularly polarizing plate which is formed by laminating a phase difference plate on a polarizing plate will be described. A phase difference plate or the like is used in the case of converting linearly polarized light into elliptically polarized or circularly polarized light, or converting elliptically polarized or circularly polarized light into linearly polarized light, or changing the direction of polarization of linearly polarized light. In particular, a so-called quarter-wave plate (also referred to as a λ/4 plate) is used as a phase difference plate for converting linearly polarized light into circularly polarized light or circularly polarized light into linearly polarized light. The 1/2 wavelength plate (also known as the λ/2 plate) is usually used to change the direction of polarization of the linearly polarized light.

The elliptically polarizing plate can be effectively used to compensate (prevent) the coloring (blue or yellow) generated by the birefringence of the liquid crystal layer of the super twisted nematic (STN) type liquid crystal display device, and the above-described colorless black and white display is performed. Wait. Further, it is preferable to control the three-dimensional refractive index to compensate (prevent) the coloring which occurs when the screen of the liquid crystal display device is viewed from the oblique direction. The circularly polarizing plate can effectively (4), for example, adjust the color tone of the image of the reflective liquid crystal display device in which the image is displayed in color, and also has an anti-reflection function. Further, the elliptically polarizing plate or the reflective elliptically polarizing plate is formed by laminating a polarizing plate or a reflective polarizing plate and a phase difference plate as appropriate. The elliptically polarizing plate or the like may be formed by sequentially stacking the layers of the (reflective) polarizing plate and the phase difference plate in the manufacturing process of the liquid crystal display device. The optical film is excellent in quality stability or laminating workability, and can improve the manufacturing efficiency of the liquid crystal display device, etc. β Λ The visual compensation film is used to observe the liquid crystal display device from a slight inclination rather than perpendicular to the kneading surface. In the case of the picture, the image is also relatively clear: 134088.doc 200920601 The film of the viewing angle is enlarged. Such a visual compensation retardation plate is, for example, included in an alignment film such as a retardation film or a liquid crystal polymer, or an alignment layer such as a liquid crystal polymer supported on a transparent substrate. A typical phase difference plate is used for a polymer film having a birefringence extending in the surface direction along the early axis. In contrast, in a phase difference plate used as a visual compensation film, it is used for yttrium extension and has birefringence. The polymer film, or a birefringent polymer or a biaxially stretched film such as a tilt alignment film, which extends in the thickness direction in the plane direction and also extends in the thickness direction and controls the refractive index in the thickness direction. Examples of the oblique alignment film include, for example, a method in which a heat shrinkage is applied to a polymer film and a polymer film is subjected to elongation treatment or/shrinkage treatment under a contraction force of heating, or a liquid crystal polymer is obliquely aligned. . The phase difference and the material raw material polymer may be the same as those described in the previous phase difference plate' may also be used to prevent coloring or the like caused by a change in the observation angle based on the phase difference of the liquid crystal cell or to expand the good observation. The angle of view, etc. is the right one for the purpose. In addition, in terms of achieving a wide viewing angle of good observation, etc., it is preferred to: support the alignment layer containing the liquid crystal polymer, the tilt of the θ disc type liquid crystal polymer, and the tilt of the liquid crystal polymer. An optically compensated phase difference plate of the optically anisotropic layer of the alignment layer. 3. The polarizing plate with α polarizing plate and brightness enhancing film is usually used in the liquid crystal cell r. If the natural light is incident by reflection from the backlight or the back side of the liquid crystal display device or the like, the brightness enhancement film exhibits a linear polarization that reflects a specific one or a circularly polarized light of a specific direction, and is enhanced by a special layer of other light.偏 Polarized plate with polarizer makes light source from backlight etc. 134088.doc •32- 200920601

The light is incident to obtain transmitted light of a specific polarization state, and light other than the specific polarization state is reflected and cannot be transmitted. Further, the light reflected by the brightness enhancement film surface is reversed via a reflection layer or the like provided on the rear side of the brightness enhancement film surface, and is again incident on the brightness enhancement film so that part or all of the light is in a specific polarization state. In order to increase the amount of light that can be used for liquid crystal display image display or the like by increasing the amount of light that is transmitted through the brightness enhancement film and supplying polarized light that is difficult to absorb by the polarizer, the brightness of the liquid crystal display image can be improved. In other words, when the brightness enhancement film is not used, when light is incident from the back side of the liquid crystal cell by a polarizer or the like, light having a polarization direction that does not coincide with the polarization axis of the polarizer is almost completely absorbed by the polarizer. And can't pass the photon. That is, it differs depending on the characteristics of the polarizer used, but 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 reduced, resulting in darkening of the image. The brightness enhancement film does not cause the polarizer having light incident in the polarization direction absorbed by the polarizer to be reflected once on the brightness enhancement film, and further reverses through the reflection layer provided on the rear side of the brightness enhancement film or the like. Then, it is again incident on the brightness enhancement film, and the step is repeated, and the polarization direction of the light which is reflected and inverted between the two is made to be transmitted through the brightness enhancement film through the polarization film in the polarization direction of the polarizer. Therefore, light such as a backlight can be effectively used for display of an image of a liquid crystal display device, and the screen can be made bright. 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 brightening film is directed toward the reflective layer or the like, but the diffusing plate is configured to diffuse the passing light while eliminating the polarized state, thereby making the light non-polarized. That is, 'natural: the light in the light state is directed toward the reflective layer, etc., I34088.doc -33 - 200920601 is reflected by the reflective layer or the like, and is again incident on the brightening 通过 through the diffusion plate, and the step is repeated. In this way, a diffusing plate that restores the polarized light to the original natural light is provided between the brightness enhancing film and the reflective layer, thereby maintaining the brightness of the display surface while reducing the brightness of the display screen. This provides a uniform and bright face. It is considered that by providing the diffusing plate, the number of times of reflection of the initial incident light is appropriately increased, and the diffusing function of the diffusing plate is combined with each other, thereby providing a bright display surface of the uniform sentence. As the brightness enhancement film, for example, a multilayer thin layer such as a dielectric or a multilayer laminate having a thin refractive index having different refractive index anisotropy or the like can be used to exhibit linear polarization of a characteristic polarization axis and reflect other light characteristics. For example, the alignment of the cholesteric liquid crystal polymer or the alignment of the liquid crystal layer on the film substrate, etc., or the like, which reflects the characteristics of the circular polarization of either the left rotation or the right rotation and the transmission of other light, is suitable. Therefore, the above-described brightening of the linear polarizing transmission type of the specific polarization axis causes the polarization axis of the passing light to be directly incident on the polarizing plate, whereby the absorption loss of the polarizing plate can be suppressed and the light can be effectively made effective. Through. On the other hand, a brightness-increasing film of a cholesteric liquid crystal layer that transmits a circularly polarized light can directly cause light to be incident on a polarizer, but from the viewpoint of suppressing absorption loss, it is preferable to make the circularly polarized light pass through a phase difference plate. After being linearly polarized, it is incident on the polarizing plate. Further, a quarter-wave plate is used as the phase difference plate, whereby the circularly polarized light can be converted into linearly polarized light. <A phase difference plate functioning as a quarter-wave plate in a wide wavelength such as a visible light region, for example, by a light color of a wavelength of 55 〇 134088.doc -34 - 200920601 nm as a quarter-wavelength plate The phase difference plate in which the light functions is obtained by superimposing a phase difference layer having other phase difference characteristics, for example, a phase difference layer functioning as a 1/2 wavelength plate. Therefore, the phase difference plate disposed between the polarizing plate and the brightness enhancing film may be one or more layers including two or more layers. Further, the cholesteric liquid crystal layer may be formed by combining two or three or more layers having different reflection wavelengths, whereby a circularly polarized light in a wide wavelength range of the visible light region 4 can be obtained. This allows for the transmission of circularly polarized light over a wide range of wavelengths. Further, the polarizing plate may be a polarizing-separating polarizing plate as described above, or may include a laminated polarizing plate and two or more optical layers. Therefore, a reflective elliptically polarizing plate or a semi-transmissive elliptically polarizing plate obtained by combining the above-described reflective polarizing plate or semi-transmissive polarizing plate and a retardation plate may be used. The optical film formed by laminating the optical layer on a polarizing plate may be formed by sequentially laminating optical layers in a manufacturing process of a liquid crystal display device or the like, but the optical film is laminated in advance to have quality stability or It is excellent in assembly work and the like, and can improve the manufacturing steps of a liquid crystal display device or the like. As the laminate, an appropriate bonding method such as an adhesive layer can be used. When the polarizing plate and the other optical layer are in contact with each other, the optical axes can be appropriately arranged at an appropriate angle in accordance with the target phase difference characteristic or the like. Further, it may be in the respective layers such as the optical film or the adhesive layer of the adhesive optical film of the present invention, for example, by a salicylate-based compound or a benzophenol-based δ. Each layer has ultraviolet absorbing energy or the like in the form of a treatment such as a solace compound or a cyanoacrylic acid g-based compound or a nickel-mismatched salt compound. 134088.doc -35- 200920601 The manufacture of the adhesive optical film of the present invention. Adhesive layer is applied to the optical film by stacking the layer of adhesive layer 51', and an adhesive layer is provided. For example, the adhesive layer on the adhesive sheet can be exemplified by the (four) layer of the release sheet. # <万去等. The demolding of the demold layer can be carried out by adhering the adhesive sheet and drying it. As the upper, ... cloth release coating, gravure printing core > 4 Μ coating method 'can be used: back-gravure printing coating, such as pro-coating method, spray coating method, re + soil, ,,,,,,,,,,,,,,,,,,,,,,,,,,,, The thickness of the adhesive layer is ',,, particularly limited, preferably about 10 to 40 _. As a constituent material of the release sheet, the dryness can be exemplified by olefins, poly-powders, ethylene, polypropylene, propylene, vinegar, etc., synthetic rubber film, rubber sheet, paper m mesh, foam sheet or metal And appropriate flakes, etc. of such layers. A. The need for the body and so on is also π 4 "the peeling property of the self-adhesive layer peeling, depending on the release film, the evening, the gas treatment, etc.:: Poly (four) treatment, long chain appearance The above-mentioned laminating step is performed. The surface of the first sub-film and the surface of the adhesive layer are subjected to a surface treatment step before the step of performing the lamination step, and the raw surface treatment is carried out. Treatment, corona discharge treatment, ultraviolet treatment electron beam treatment, and ozone deficiency look "",,, dip treatment, I, etc. as the above-mentioned surface treatment treatment, in terms of the denseness of the view, t鲂 cup dip θ history Especially in the case of n-polymerization and corona discharge treatment, it can be implemented on the surface of the photon, surface and adhesive layers, and the same can be used for the difference between the $w+ and the surface treatment. ^ By means of, for example, using a battery discharge machine to reduce dust or atmospheric pressure in a gas atmosphere containing at least one of nitrogen, oxygen, ammonia, argon and helium, the method of demining the brother into the power Performed. Plasma treatment for 134088.doc -36- 200920601 The chemical reaction treatment caused by the electric destruction of the above gas, etc. under the above conditions. As the condition of the vacuum plasma, the pressure is usually taken as the plasma condition under the AA gas castle, usually Preferably, it is carried out in an environment of an ammonia gas, a helium gas, or the like, or in an atmosphere of an inert gas such as oxygen gas or ammonia gas. The inert gas/active gas is mixed. In the case of the case, it is preferred that the inert gas is about 1 to 20% by weight with respect to about 8 to 99% by weight of the inert gas. More preferably, it is an inert gas with respect to 90 to 95% by weight of the inert gas. In addition, the surface treatment of the surface of the optical film and the surface of the adhesive layer are treated by electricity, and at least the surface of the surface of the optical film and the surface of the adhesive layer are treated by plasma. In the gas containing active gas (in the inert gas) ^; ^, ancient t & J 仃 仃 仃 仃 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲 卷曲Good is in a gas containing oxygen ( (10) The frequency in the plasma treatment is 】~4Λ 丄kiiz, preferably 3~3 5 kHz, specific energy density (s 彳P Energy Density) (electricity: W divided by electrode area: The 丨〇w/cm obtained by cm2 is preferably about 0.5~2 W/cm2. In addition, under the pressure of the big milk, the gas flow rate is preferably about 1~500 L/min. It is preferably about 0.1 second to about 1 minute. The processing time can be read by the reader ★ 敕 敕 t t ', for example, by bonding the optical and adhesive layers (with the release sheet, the adhesive layer of the sheet) In the case, for example, the 踝 δ can be reduced to 1 to 50 m/min, and the 疋 is preferably 5 to 30 m/min, thereby penalizing the above processing time. This corona discharge treatment can be caused by, for example, a gap between the J W' electrode and the roller, and a high lightning voltage is applied between the 5 Xuan specials, and the discharge is caused between the electrode and the roller. The optical film or adhesive layer is placed and straightened. As a specific condition, for example, the output is an electrode, and Π·5~h5kW is good. The electrode can be exemplified by a view type bar electrode or the like. The gap width is . .5~10 mm or so, preferably 疋i~3 mm. In addition, the + can be adjusted appropriately, for example, the time is about u seconds ~ 1Q minutes. In the case of treating the optical film and the adhesive layer = the adhesive layer of the de-nucleating sheet with a line, for example, the line speed can be set to two, and preferably 5 to 3 〇-η, thereby controlling The above processing U order. As a UV treatment, it can be used as a purple light source with a wavelength of 150~2〇〇〇nm for 5~60 minutes, such as brigade tube, mercury lamp, laser rat discharge tube, and bitter shot. :: Right indicates that the more specific article is manufactured by Japan Battery Co., Ltd.: The wavelength of the two low-pressure mercury lamps is 254.1 85 nm, and the output is 1 2: the distance from the sample is 5. _ conditions. Electron beam treatment can be used in ιυ~1〇torr toilet: six"ru ^ force, first beam current value is 1~10 mA, processing speed minute, titanium crucible thickness is 15~, acceleration voltage is 1 50~250 kV , call to shoot my helmet ^ c ! ο ... in the 〇. 5~12〇Mrad conditions. Smelly treatment can be carried out according to the usual method. The viscous optical film can be preferably used in the formation of a liquid crystal display device == device. The formation of the liquid crystal display device can be based on /. # ' The liquid crystal display device is usually formed by assembling a liquid crystal cell, a type of optical 臈, and an optional illumination system, and assembling the field to form a drive circuit, etc., in addition to the use of 134088.doc *38 in the present invention. 200920601 The adhesive optical film of the present invention is not particularly limited, and any of the types such as TN type, STN type, ^ type, VA type, and ips type may be used depending on the liquid crystal cell. An adhesive optical film may be disposed on one side or both sides of the liquid crystal cell

^ a 7 7F device' or a suitable liquid crystal display device such as a backlight or reflector used in an illumination system. In this case, the optical film of the present invention can be disposed on one side or both sides of the liquid crystal cell. When the optical film is placed on both sides, the same may be the same or different. Further, when forming a liquid crystal display device, for example, one or two or more layers of a diffusion plate, an anti-glare layer, an anti-reflection film, a protective plate, a ruthenium array plate, a lens array sheet, a light diffusion plate, a backlight, etc. may be appropriately used. The parts are placed in the proper position. Next, there is an electroluminescent device (organic display device), and an optical film (polarizing plate or the like) of the present invention can also be used in an organic EL_display device. In general, an organic EL display device is formed by sequentially laminating a transparent electrode, an organic light-emitting layer and a metal electrode on a transparent substrate to form an illuminant (organic electroluminescence). Here, the organic light-emitting layer is a laminate of various organic thin films, and for example, a laminate including a hole injection layer such as a triphenylamine derivative and a light-emitting layer containing a fluorescent organic solid such as ruthenium or the like is known. A laminate of such a light-emitting layer and an electron injecting layer such as an anthracene derivative, or a laminate having a combination of a hole injection layer such as a germanium, a light-emitting layer, and a layer of an electron injecting layer. The σ organic EL display device emits light according to the following principle, that is, by applying a voltage on the transparent electrode and the metal electrode, the hole and the electron are injected first, and the energy generated by the recombination of the holes and the electrons is generated. Excitation 134088.doc •39- 200920601 Fluorescent material 'radiation first when the excited fluorescent material returns to the substrate state. The mechanism of recombination is the same as that of a normal diode, and it is also predicted that the current and the intensity of the light show a strong nonlinearity with respect to the rectification with respect to the applied electric power. In the organic EL display device, in order to extract the light emitted from the organic light-emitting layer, at least one of the electrodes must be transparent, and a transparent electrode formed of a transparent conductor such as indium tin oxide (ITO) is usually used as the anode. On the other hand, in order to facilitate electron injection and improve luminous efficiency, it is important to use a substance having a small work function as a cathode, and a metal electrode such as Mg-Ag or the like is usually used. In the organic EL display device of such a configuration, when the thickness of the organic light-emitting layer is about 1 〇 nm, an extremely thin ridge is formed. Therefore, the organic light-emitting layer also partially transmits light to the transparent electrode, and the light that is incident from the surface of the transparent substrate, passes through the transparent electrode and the organic light-emitting layer, and is reflected by the metal electrode to the surface of the transparent substrate again. The side is ejected, so that the display surface of the organic EL display device looks like a mirror when viewed from the outside. In an organic EL display device including an organic electroluminescence display illuminator including a transparent electrode on the surface side of the organic light-emitting layer that emits light by application of a voltage, and a metal electrode formed on the back side of the organic light-emitting layer, A polarizing plate is disposed on a surface side of the transparent electrode, and a phase difference plate is disposed between the transparent electrode and the polarizing plate. Since the phase difference plate and the polarizing plate have a function of polarizing light incident from the outside and reflected by the metal electrode, the polarizing action has the effect of not observing the mirror surface of the metal electrode from the outside. In particular, if the phase difference plate is formed by a quarter-wave plate and the angle of 134088.doc -40-200920601 formed by the polarization direction of the polarizing plate and the phase difference plate is adjusted to π/4, the mirror surface of the metal electrode can be completely shielded. . In other words, the external light incident on the organic EL display device is transmitted through only the linearly polarized light component by the polarizing plate. The linearly polarized light is generally elliptically polarized by the retardation plate, but is made to be circularly polarized especially when the retardation plate is a "4 wavelength plate and the angle formed by the polarizing direction of the polarizing plate and the retardation plate is π/4. The circularly polarized light passes through the transparent substrate, the transparent electrode, and the organic thin film, is reflected by the metal electrode, passes through the organic thin film, the transparent electrode, and the transparent substrate again, and becomes linearly polarized again on the phase difference plate. Further, since the linearly polarized light is orthogonal to the polarizing direction of the polarizing plate, it cannot pass through the polarizing plate. The result 'can completely obscure the mirror surface of the metal electrode. EXAMPLES Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited to the examples. Furthermore, the parts and % in each case are based on weight. Example 1 (Optical film) A polyvinyl alcohol-based film having a thickness of 80 μm was extended 5 times in an iodine solution, and dried to obtain a polarizer. An optical film (polarizing plate) was formed by laminating a saponified 80 η 之 三 醯 醯 cellulose film on both sides of the polarizer by a polyvinyl alcohol-based adhesive. (Preparation of acrylic polymer) 1 part by weight of butyl acrylate, 3 parts of acrylic acid, 01 parts of acrylic acid 2_, and 2 parts of 2,2,-azobisisobutyronitrile The solution was prepared by adding it to a reaction vessel equipped with a cooling tube, a nitrogen introduction tube, a thermometer, and a stirring device together with ethyl acetate. Next, while blowing nitrogen gas into the solution, the mixture was stirred, and the reaction was carried out at 55 ° C for 8 hours to obtain an acrylic acid-containing polymer having a weight average molecular weight of 2,200,000. liquid. Further, ethyl acetate was added to the solution containing the acrylic acid-based compound to obtain an acrylic acid-based polymer solution having a solid content adjusted to 3 % by weight. (Formation of Adhesive Layer) A crosslinking agent having 0.5 parts of a compound having an isocyanate group as a main component as a crosslinking agent (Japanese Polyurethane) as a crosslinking agent is sequentially prepared in an amount of 1 part by weight relative to the above-mentioned acrylic polymer solution. Manufactured by the company, the trade name "CORONATE L", and 75 parts of γ-glycidoxypropyltrimethoxydecane as a decane coupling agent (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "), thereby preparing an adhesive solution. Applying the above adhesive solution to the surface of the release-treated release sheet containing polyethylene terephthalate film (thickness: 38 μm) so as to be dried to a thickness of 25 μm, after drying An adhesive layer is formed. (Surface treatment: plasma treatment): In a rat atmosphere, the surface of one of the polarizing plates and the surface of the adhesive layer formed on the release-treated surface of the release sheet were subjected to electropolymerization treatment. : Li processing conditions set to output: 〇 15 kw 'specific energy density: work W / cm (electrode area · 15 〇 2, bar 15 〇 cm), frequency: 5 kHz, gas flow 〇 L / min, line speed is 2 m/min. The surface-active treatment is formed on the release core of the release sheet, and the adhesive is formed to form an adhesive optical film (Weng 134088.doc -42-200920601-type polarizing plate). Example 2 = In the application of m, the mixture was treated with a mixture of 95% nitrogen gas and 5% oxygen gas, respectively, and the adhesive film was obtained in the same manner as in the example. Membrane (adhesive polarizing plate). Example 3 In Example 1, the plasma treatment was carried out in a mixed gas atmosphere of 95% nitrogen gas and 5% gas gas, respectively, and the adhesive optical enthalpy was obtained in the same manner as in Example i. Adhesive polarizer). [Example 4] In Example 1, a precipitation sheet of a thickness of 100, which is a biaxially stretched substrate, was used as a photonic film, and the examples were the same as in the examples. Adhesive optical film (adhesive phase difference plate) is obtained in the same manner. Example 5 In Example 1, one side of the polarizing plate was subjected to plasma treatment under a nitrogen atmosphere, and on the other hand, the surface of the adhesive layer was electrically charged in a mixed gas atmosphere of 95% nitrogen and 5% oxygen. An adhesive optical film (adhesive polarizing plate) was obtained in the same manner as in Example 1 except for the slurry treatment. Example 6 In Example 1, 'a plasma treatment was performed on one side of a polarizing plate under a mixed gas of 95% nitrogen gas and 5% ammonia gas. On the other hand, at 95% gas, 5 . /. In the same manner as in Example 1, except that the surface of the adhesive layer was subjected to electricity treatment in the mixed gas atmosphere of oxygen, a viscous optical 臈 (adhesive polarizing plate) was obtained in the same manner as in Example 1. (Example 7) An adhesive type optical film (adhesive type polarizing plate) was obtained in the same manner as in Example ’ except that corona treatment was carried out instead of the plasma treatment in Example 1. The conditions for corona treatment were set to output: 〇, 丨kw, rod electrode gap 1 mm, and line speed 2 m/min. Comparative Example 1 In the example ^', only the surface of the polarizing plate was subjected to plasma treatment, except for the following! An adhesive optical film (adhesive polarizing plate) was obtained in the same manner. Comparative Example 2 In Example 1, only the surface of the adhesive layer was subjected to a plasma treatment, and an adhesive optical film was obtained in the same manner as in Example 1 except for 1:2 (adhesion Comparative Example 3 in Example 7, only The polarizing plate was subjected to a krypton treatment, and the same as in Example 7, except for the skin, a polarizing plate. $Adhesive optical film was obtained (adhesive type comparative example 4 in Example 7), and only the surface of the adhesion θ 9 was subjected to corona treatment, and otherwise, a "type polarizing plate" was used in the same manner as in Example 7. Adhesive type optical film (adhesive comparative example 5 was the same as in the first embodiment except that the surface of the polarizing plate and the surface of the adhesive layer were not subjected to plasma treatment in Example 1 except for 134088.doc • 44 · 200920601). The adhesive optical film (adhesive polarizing plate) was obtained in the following manner. The adhesive optical film obtained in the above examples and comparative examples was evaluated as follows. The evaluation results are shown in the table. (Adhesive residue) It was produced by the above method. Adhesive polarizing film is cut into 50 sheets according to the size of 5〇mmx 1 500 mm' and adhered to the glass plate (C〇rning & 无 无 无 无 玻璃 玻璃 #1737) at 50 ° C x 5 MPa The environment was placed for 15 minutes. Secondly, the adhesive polarizing film was peeled off from the glass at a speed of 300 mm/min in the direction of 1800 mm. Thereafter, the sheet of the sample to which the adhesive was adhered on the glass was visually confirmed. Number (number of attached sheets). (Adhesive Lack) The adhesive polarizer made by the above method is stamped into a size of 25 mm x 150 mm with a Tomson knife die, and the cut end (25 mm width side) is contacted 20 times in a row for 20 times (alkaline made by Corning). After the glass #n37p, the contact portion of each of the adhesive optical films was visually confirmed and evaluated according to the following criteria: 〇: No adhesive having a depth of 150 μm or more was insufficient. Δ: The depth was more than 150 μηι, There is no adhesive for 30 〇μιη, but there is no problem in practical use. Χ : There is a lack of adhesive with a depth of 300 μm or more. (Adhesion) The adhesive polarizing film made by the above method is cut into claws. The size of the mantra is formed by depositing the adhesive layer of the adhesive polarizing film with the indium-oxidized 134088.doc •45-200920601 tin on the surface of a 50 μπ thick polyethylene terephthalate film. The vapor-deposited surface of the black coating was attached in abutting manner, and left in an environment of 23/6〇% RH for 20 minutes or more. Thereafter, the polyethylene terephthalate film was peeled off by hand. End, confirm that the adhesive is attached to After the polyethylene terephthalate film side, the stress at the time of peeling at a speed of 3 〇〇mm/min in the 180 direction was measured using a tensile tester AG-1 manufactured by Shimadzu Corporation (25 C) (N/ 25 mm) (Curling) The adhesive polarizing film made by the above method was punched into a size of 100 mm x 150 mm using a Tomson knife mold, and it was placed in a glass plate (c无rning & 1 737) The distance between the cut end portion (1 mm width side) and the glass (the amount of curl) was measured, and the evaluation was performed according to the following criteria. 〇: No curl of more than 10 mm. △: There is a curl of more than 10 mm and less than 20 mm, but there is no problem in practical use. X: There is a curl of 30 mm or more. 134088.doc -46- 200920601 Evaluation Curl <] 〇〇〇〇〇XXXXX Concealed (N/25 mm) Bu inch 黏 黏 黏 & & 〇〇〇〇〇 〇〇〇〇〇 XXXXX Ϊ S S| 0/50 0 /50 0/50 0/50 0/50 0/50 0/50 25/50 42/50 12/50 14/50 45/50 Surface treatment adhesive layer surface plasma treatment (nitrogen) plasma treatment (nitrogen + Oxygen) Plasma treatment (nitrogen + ammonia) Plasma treatment (nitrogen + oxygen) Plasma treatment (nitrogen + ammonia) Corona treatment 1 Plasma treatment (nitrogen) » Corona treatment 1 One side of optical film Treatment (nitrogen) Plasma treatment (nitrogen + oxygen) Plasma treatment (nitrogen + ammonia) Plasma treatment (nitrogen) Plasma treatment (nitrogen) Plasma treatment (nitrogen + oxygen) Corona treatment plasma treatment (nitrogen) 1 Corona treatment 1 I | Example 1 | Example 2 1 Example 3 I | Example 4 | Example 5 | Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 - 47- 134088.doc

Claims (1)

200920601, the scope of application for patents: 1. The method for forming the main scorpion pancreas of the viscous optical film, which has the step of laminating the adhesive layer on at least one side of the optical film, wherein: the above-mentioned lamination step is After the surface of the optical film and the surface of the adhesive layer to be subjected to the lamination step are subjected to surface active treatment, the surface of the surface of the optical film and the surface of the adhesive layer are laminated. 2. The method of producing an adhesive optical film according to the present invention, wherein the surface treatment treatment is selected from the group consisting of plasma treatment, corona discharge treatment, ultraviolet treatment, electron beam treatment, and ozone treatment. Such as the request item! The method for producing an adhesive optical film, wherein the surface treatment is an electric shock treatment, and the plasma treatment is carried out in at least any gas selected from the group consisting of nitrogen, oxygen, ammonia m and helium. 4. The method for producing an adhesive optical film according to Item 3, wherein the surface of the optical film and the surface of the adhesive layer are surface-treated, and the surface of the optical film is And the plasma treatment of any at least one side of the surface of the adhesive layer is carried out in a gas containing oxygen. An adhesive optical 臈' is by the request item! Obtained by the manufacturing method of any one of four. An image display device using at least an optical film. A method of adhesive bonding according to claim 4, wherein an adhesive optical material is formed on at least one side of the optical crucible, and a layer of (4) layers is laminated on the surface of the optical film to be laminated and the surface of the adhesive layer is 134088. After performing surface treatment on .doc 200920601, the surface of the surface treated optical film and the surface of the adhesive layer are laminated, thereby enhancing the optical film and the adhesive layer in the adhesive optical film obtained by the laminate. Adhesion and suppression of curling of the adhesive optical film. CC 134088.doc 200920601 VII. Designated representative map: (1) The representative representative of the case is: (none) (2) The symbolic symbol of the representative figure is simple: 8. If there is a chemical formula in this case, please reveal the characteristics that can best display the invention. Chemical formula: (none) 134088.doc