TW200941051A - Method of stripping optical film of pressure-sensitive adhesive type and optical film of pressure-sensitive adhesive type - Google Patents

Abstract

Provided is a method by which a pressure-sensitive adhesive type optical film adherent to a glass substrate is easily stripped from the substrate without damaging the glass substrate and without leaving any adhesive residue on the glass substrate. Also provided is a pressure-sensitive adhesive type optical film which is for use in the method of stripping. The method of stripping a pressure-sensitive adhesive type optical film is for stripping the pressure-sensitive adhesive type optical film from an optical-film-bearing glass substrate, which comprises a glass substrate and a pressure-sensitive adhesive type optical film adherent thereto. The method of stripping a pressure-sensitive adhesive type optical film is characterized in that the pressure-sensitive adhesive type optical film has a pressure-sensitive adhesive layer formed from an aqueous dispersion type pressure-sensitive adhesive. The method is further characterized by exposing the optical-film-bearing glass substrate to an environment having a temperature of 40 DEG C or higher and a relative humidity of 80% or higher or having a temperature of 50 DEG C or higher and a relative humidity of 70% or higher and then stripping the pressure-sensitive adhesive type optical film from the glass substrate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for peeling an adhesive optical film from which an adhesive optical film is peeled off from a glass substrate to which an optical film is attached, and an adhesive used in the peeling method Optical film. Examples of the optical enthalpy include a polarizing plate, a phase difference plate, an optical compensation film, a brightness enhancement film, a viewing angle widening film, and the like. [Prior Art] A liquid crystal display or the like must have a polarizing element disposed on both sides of the liquid crystal cell due to the relationship between image forming methods, and is usually attached to a polarizing plate. Further, in order to improve the display quality of the display, various other optical elements other than the polarizing plate are used on the liquid crystal panel. For example, a phase difference plate for preventing coloration, a viewing angle-enlarging film for improving the viewing angle of the liquid crystal display, and a brightness enhancement film for improving the contrast of the display are used. These films are collectively referred to as optical films. When the above optical film is adhered to the liquid crystal cell, an adhesive is usually used. Further, when the optical film is bonded to the liquid crystal cell and the optical film is bonded, the materials are usually adhered to each other in order to reduce the loss of light. In this case, there is an advantage that the drying step is not required to fix the optical film. Therefore, an adhesive type optical film in which an adhesive layer is formed by previously applying an adhesive to one surface of the optical film is generally used. When the adhesive optical film is bonded to the surface of the liquid crystal cell, the bonding position is shifted or a foreign matter is caught, which causes a problem in liquid crystal display. Therefore, the adhesive optical film that has been attached is peeled off. Then, a new adhesive optical film is attached to the surface of the liquid helium unit again. However, due to the enlargement of the liquid crystal display 138007.doc 200941051 or the thinning of the liquid crystal cell, it is more and more difficult to peel off the adhesive optical iridium, especially when the adhesion of the adhesive layer is strong. A large force is required. Therefore, there is a problem that the workability is deteriorated, the cell gap of the liquid crystal cell is changed, the display quality is deteriorated, or the liquid crystal cell is damaged. Further, in order to suppress the manufacturing cost, it is required to reuse the peeled adhesive optical yoke and to rework the peeling residue without any residue. As a method for solving the above problems, there is proposed a method of softening or melting and peeling off an adhesive while inserting a heated electric heating wire (electricaUy heated wke) or a slicer between the liquid crystal panel and the optical film. Documents 1 and 2); and a method in which a slit is cut out on an optical film on a liquid crystal panel to divide and peel the sheet (Patent Document 3). Further, a method of peeling off a transparent film and an adhesive from the display material after the display material having a transparent film adhered thereto via an adhesive is immersed in an alkaline solution has been proposed (Patent Document 4). In addition, a method of bonding the peeling sheet to the optical member to be peeled off and peeling off the optical member together with the peeling sheet is proposed (Patent Document 5); and after the polarizing plate is adhered to the adhesive tape, A method of performing peeling' (Patent Document 6). Further, a method of removing a polarizing plate or the like contained on a glass substrate by immersing in concentrated sulfuric acid is proposed (Patent Document 7); the adhesive is dissolved and removed by using a solvent such as acetone or triethylene glycol. And a method of peeling off a polarizing plate (Patent Document 8); a method of removing a polarizing plate by dissolving a polarizing plate in a solvent for a polarizing plate (Patent Document 9); and an adhesive in an adhesive type optical film 138007.doc 200941051 A method of peeling off in the presence of a liquid on the peeling interface between the layer and the substrate (Patent Document 10). However, in the above method, it is necessary to perform a work of inserting a peeling jig between the liquid crystal panel and the optical film, or cutting only the optical film on the liquid crystal panel. Further, there is a problem that a large amount of residual residue is generated on the liquid crystal panel or damage to the liquid crystal panel due to the solvent. Patent Document 1: Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2002-350837. Japanese Laid-Open Patent Publication No. JP-A-2002-159955 (Patent Document No. JP-A-2002-159955) Patent Document No. JP-A-2002-159955 Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2005-224715. DISCLOSURE OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION An object of the present invention is to provide a method for peeling an adhesive optical film and an adhesive optical film used in the peeling method, which can be self-adhered to a glass with an adhesive optical film The glass substrate is not damaged on the substrate, and no residual residue is generated on the glass substrate, and the adhesive type optical iridium is easily peeled off. In particular, it is an object of the present invention to provide a method in which, even if the adhesive mechanical film is bonded to a glass substrate for a long period of time and the force is increased, and the operation of the 138007.doc 200941051 becomes extremely difficult, the residue can be left without residue. A method of peeling off an adhesive optical film. MEANS FOR SOLVING THE PROBLEMS As a result of intensive studies to solve the above problems, the inventors of the present invention have found that the above object can be attained by the following peeling method, and the present invention has been completed. That is, the present invention relates to a method for peeling an adhesive optical film which is obtained by peeling an adhesive optical film from a glass substrate with an optical film attached with an adhesive optical iridium on a glass substrate, and is characterized in that: The adhesive layer of the optical film is formed of a water-dispersible adhesive, and the peeling method exposes the glass substrate with the optical film to a temperature of 4 ° C or more and a relative humidity of 80% or more, or a temperature of 5 〇<) (: After the above and the relative humidity is 70% or more, the adhesive optical film is peeled off from the glass substrate. As described above, the glass substrate with the optical film is exposed to a specific environment ( The exposure treatment can sufficiently reduce the adhesion force of the adhesive layer of the adhesive optical film, thereby peeling off the adhesive optical film β from the glass substrate without damaging the glass substrate, without repellency and good workability, by the peeling of the present invention The method 'even when the size of the liquid crystal panel is large or the liquid crystal cell is thin, the workability is good. And by the peeling method of the present invention, even if the adhesive optical film is long When the time is applied to the glass substrate and the force is increased, the adhesive layer may be peeled off without any residue, and the adhesive layer of the above-mentioned adhesive optical film may be formed by using a water-dispersible adhesive. Then, by the above exposure treatment, the adhesive layer absorbs water and moisture 138007.doc 200941051 penetrates into the interface between the adhesive layer and the glass substrate, so that the adhesion force of the adhesive layer is sufficiently lowered, so that the reworkability is improved. Further, even if exposed After the treatment, the temperature is returned to room temperature, and then the force does not rise again, which is preferable in terms of the operation steps. The above-mentioned adhesive type optical yoke preferably has an adhesion-promoting layer between the optical film and the adhesive layer. The layer can preferably adhere the adhesive optical film to the glass substrate, and can peel off the adhesive film without peeling off and easily peel off. Further, the present invention relates to an adhesive optical film. It is used in the above-mentioned peeling method of the adhesive optical film, and has an adhesive layer formed of a water-dispersible adhesive on at least one side of the optical film, The adhesive optical film is attached to a glass substrate, and after being exposed to an environment having a temperature of 6 (rc and a relative humidity of 30°/° for 100 hours, the adhesive force is 2〇N/25 mm or more. It is exposed to a temperature of 4 (rc or more and a relative humidity of 8〇% or more, or a temperature of 50. (The above and the relative humidity is 70% or more in an environment after the 'the adhesion force is 10 N / 25 mm width or less. The adhesive optical film of the present invention is exposed to a specific environment (exposure treatment) even when the bonding force is as long as 20 N/25 mm or more in a high-temperature environment after bonding with the glass substrate for a long time. Moreover, the adhesion force of the adhesive layer can be sufficiently reduced, so that the adhesive optical film can be peeled off from the glass substrate without damaging the glass substrate, without the residue of the paste, and the workability is excellent. The adhesive optical film of the present invention is even in the liquid crystal panel. When the size is large or the liquid crystal cell is thin, it can be peeled off with good workability. [Embodiment] 138007.doc 200941051 The optical enamel-attached glass substrate of the present invention is obtained by attaching an adhesive optical film to a glass substrate, and the adhesive layer of the adhesive optical film is formed of a water-dispersible adhesive. As the water-dispersible pressure-sensitive adhesive, various water-dispersible adhesives such as a rubber-based adhesive, an acrylic-based adhesive, and a bismuth-based adhesive can be used, and it is preferably colorless and transparent, and is compatible with a liquid crystal cell (glass substrate). Further excellent acrylic acid-based adhesive The water-dispersible acrylic adhesive contains an acrylic polymer emulsion obtained by emulsion polymerization of an alkyl (meth) acrylate in the presence of an emulsifier. Further, (meth) acrylate means acrylate and/or methacrylate, and (meth) has the same meaning. The number of carbon atoms of the alkyl group of the alkyl (meth)acrylate is about 1 to 14, and specific examples thereof include ethyl (meth)acrylate (meth)acrylate and n-butyl methacrylate ((meth)acrylate). Methyl) propylene-based second butyl ester, (butyl) (meth) acrylate, (meth) acrylate, (cyclo) acrylic ring, (meth) acrylate 2 - ethyl hexanoic acid, ( Mercapto) n-octyl acrylate, isooctyl (meth) acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate, n-decyl (meth) acrylate, (fluorenyl) propyl Baked acid isophthalic acid vinegar, (meth) propionic acid n-dodecyl vinegar, (methyl) acrylic acid n-tridecyl ester, (mercapto) n-tetradecyl acrylate, etc. Used alone or in combination. + Other polymerizable monomers may be used in order to adjust the adhesion characteristics of the glass transition point or the adhesive layer of the acrylic polymer. In particular, in order to increase the adhesion to the glass substrate, or to introduce a crosslinking point for subsequent crosslinking of the obtained copolymer, and further to improve the cohesive force of the adhesive, 138007.doc 200941051 preferably uses a carboxyl group. Monomer. Examples of the carboxyl group-containing monomer include acrylic acid, methacrylic acid, carboxyethyl (meth) acrylate, carboxy amyl (meth) acrylate, itaconic acid, maleic acid, and fumaric acid. , butenoic acid, etc. Among them, acrylic acid and mercaptoacrylic acid are particularly preferably used. The amount of the monomer containing a slow-base group is preferably % by weight, more preferably 丨 to 7% by weight based on the total amount of the monomer component forming the propylene-based acid polymer.

Further, as another polymerizable monomer, an example can be suitably used: a monomer containing a repeating acid group, a monomer containing a phosphoric acid group, a monomer containing a cyano group, a vinyl monomer, an aromatic vinyl monomer, etc. a cohesive force, a component of a material, or a monomer containing an acid needle group, a monomer containing a base group, a monomer containing a brewing amine group, a monomer containing an amine group, a monomer containing an epoxy group, N-propylene fluorene A component such as morphine or ethylene-monomer enhances the adhesion or has a functional group that functions as a crosslinking crosslinking point. These monomers may be used singly or in combination of two or more. Examples of the monomer having a rhyme group include phenylethyl acid, propyl propyl acid, 2-(indenyl) propyl decyl amide methyl propyl acid, and (methyl) acrylamide propyl citrate. (M)acrylic acid continued with two vinegars, (mercapto) propylene oxide oxysulfonic acid and the like. Examples of the monomer containing a money group include 2% minus ethyl (tetra) tartaric acid vinegar and mono [poly(oxypropylene) (methyl) propyl vinegar vinegar] vinegar. The monomer containing an atmosphere group may, for example, be propylene guess or methacrylonitrile. 138007.doc -9. 200941051 As the vinyl ester monomer, for example, vinyl acetate, vinyl propionate, vinyl laurate or the like can be listed. Examples of the aromatic vinyl monomer include a styrene, a gas styrene, a gas methyl styrene, and an α-methyl phenyl group. Examples of the monomer having an acid anhydride group include, for example, maleic anhydride, itaconic anhydride, and the like. Examples of the monomer having a hydroxyl group include, for example, 2-hydroxyindole ethyl (meth)acrylate, 2-hydroxymethyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate. , 6-hydroxyhexyl (meth)acrylate, 8-hydroxyoctyl (meth)acrylate, 10-methyl vinegar (meth) acrylate, (method, & ▲ VT 丞) acrylic 12-hydroxy laurel Ester, (4-hydroxymethylcyclohexyl)methyl N-hydroxymethyl (meth) acrylamide, N-hydroxy (meth) acrylamide, G-alcohol, allyl alcohol, 2-hydroxyethyl Vinyl ether, 4-hydroxybutyl vinyl ether, -t, -ethyl alcohol monovinyl ether, and the like. As the monomer containing a guanamine group, for example, J Magic, acrylamide, diethyl propylene amide, and the like. As a monomer containing an amine group, an example of N,N-methylamino group (meth)acrylic acid, and (meth)propionic acid N,N-dimethylaminopropyl vinegar , (Methyl) acrylonitrile, methacrylic acid, and the like. Examples of the epoxy group-containing monomer include, for example, (meth) propyl glycosyl glycidyl ester, propylene glycol glycidyl ether, and the like. Examples of the vinyl ether monomer include M s , fluorene methyl vinyl ether, ethyl vinyl sulfonate, and isobutyl ethene oxime. Further, examples of the polymerizable single monomer other than the above include a pentane monomer containing a halogen atom. As a decane series, for example, 3-(methyl) 138007.doc 200941051 propylene oxypropyl dimethoxy oxime, vinyl trimethoxy pulverization, vinyl triethoxy decane, 4-ethylene Butyl trimethoxy decane, 4 - vinyl butyl triethoxy decane, 8-vinyl octyl trimethoxy decane, 8 - ethyl octyl diethoxy sulphate, 10-methyl propyl晞醢 methoxy decyl trimethoxy decane, 10-propenyl decyl decyl trimethoxy decane, 10 methacryl decyl decyl triethoxy decane, 10 propylene methoxy fluorenyl triethoxy Base decane and the like. The above decane-based monomers may be used singly or in combination of two or more. The content of the decane-based monomer as a whole is preferably 0.01 to 3 parts by weight based on 100 parts by weight of the acrylic polymer, more preferably It is 〇〇 1 ~ 丨 weight injury. It is preferred that the decane-based monomer is copolymerized to improve durability. The acrylic acid compound is preferably "the solvent-soluble component has a weight average molecular weight of 500,000 or more, preferably 1,000,000. Above, the better is more than 10,000. In the case where the weight average molecular weight is less than 50,000, there is a tendency that the cohesive force of the viscous β composition becomes small to cause a residual of the mash. The weight average molecular weight was obtained by GPC (Gel Permeati〇n 咖 丫 丫, gel permeation chromatography). The acrylic polymer is prepared by emulsion polymerization (emulsification polymerization). The copolymer obtained by 'X' may be any of a random copolymer, a block copolymer and the like. The polymerization initiator, the emulsifier and the like are not particularly limited, and can be suitably used. As the polymerization initiator, for example, 2,2,-azobisisobutyronitrile, 138007.doc 200941051

2,2'-azobis(2·amidinopropane) dihydrochloride, 2,2,-azobis[2_(5•methyl-2-pyrimidin-2-yl)propane]dihydrochloride Salt, 2,2,-azobis(2-methylpropanoid j disulfate, 2,2,-azobis(Ν,Νι·dimethyleneisobutyl), 2,2,_couple An azo-based initiator such as nitrogen bis[(2-carboxyethyl)-2-methylpropionamidine hydrate (manufactured by Wako Pure Chemical Industries, Ltd., VA-057); persulfate unloading, persulfate, etc. ^Persulfate; di(2-ethylhexyl) tetraperoxide, mono(4-t-butylcyclohexyl) peroxydicarbonate, dibutyl 2,2-butyl peroxydicarbonate, neodymium peroxide Third butyl acid ester, third hexyl peroxypivalate, third butyl pivalate, dilauroyl peroxide, di-n-octyl peroxide, 2-ethyl peroxyhexanoic acid-hydrazine , ^, % tetradecyl butyl acrylate, diphenyl benzoate), benzhydrin peroxide, tert-butyl peroxyisobutyrate, bis(peroxylated third hexyl) cyclohexane, third a peroxide-based initiator of butyl hydroperoxide or hydrogen peroxide; a combination of persulfate and sodium hydrogen sulfite a redox initiator such as a combination of a peroxide and sodium ascorbate, which is a combination of a peroxide and a reducing agent, but is not limited thereto. The polymerization initiator may be used singly or in combination of two or more. In combination, the content of the polymerization initiator as a whole is preferably 〇.002 to 〇.5 parts by weight, more preferably 0.005 to 0.2 parts by weight, based on 1 part by weight of the monomer. Listed: sodium lauryl sulfate, ammonium lauryl sulfate, sodium dodecylbenzenesulfonate, polyoxyethylene sodium lauryl sulfate, sodium polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether ammonium sulfate, polyoxygen An anionic emulsifier such as sodium alkyl phenyl ether sulfate or sodium polyoxyethylene alkyl sulfosuccinate; polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, polyoxyethylene - a non-ionic system such as a polyoxypropylene block polymer, etc. 138007.doc • 12· 200941051 Emulsifier, etc. These emulsifiers may be used singly or in combination of two or more. Further, as a propylene group or an allyl group introduced therein Radical polymerizable Lu Yue t* base The reactive emulsifier is, for example, 八(^^八[〇>}118-10, 118-2〇, HS-1025, KH-10, BC_05, BC_1〇, BC 2〇 (manufactured by First Industrial Pharmaceutical Co., Ltd.) ' ADEKA REASOAP SEl〇N (manufactured by Asahi Kasei Co., Ltd.), etc. The reactive emulsifier is introduced into the polymer chain by polymerization, so that water resistance is improved, so that it is preferable in terms of polymerization stability and mechanical stability. The amount of the emulsifier used is preferably from 5% to 5 parts by weight, more preferably from 1 to 4 parts by weight, based on 1 part by weight of the monomer. A chain transfer agent is used. The molecular weight of the acrylic polymer can be suitably adjusted by using a chain transfer agent. Examples of the chain transfer agent include lauryl mercaptan, glycidyl mercaptan, 1·12 decyl mercaptan, thioglycolic acid, 2-phenyl alcohol, thioglycolic acid, 2-ethylhexyl thioglycolate, 2,3_dimercaptopropanol and the like.

These chain transfer agents may be used singly or in combination of two or more kinds, and the content of the chain transfer agent as a whole is about 5 parts by weight based on the weight of the monomer (10). For example, the above monomers or comonomers are first mixed, and after the emulsifier and water are formulated therein, emulsification is carried out to prepare an emulsion. At this time, the monomer may be blended with all or a portion of the total amount used, and the remainder is added dropwise during the polymerization, and then the dilute starter and optionally water are added to the emulsion for emulsion polymerization. (Emulsifying and concentrating) In addition, 'water can be used to prepare silk material, or ^ after preparation. 138007.doc 200941051 One-step preparation" Again, the amount of water is not particularly limited, it is better to polymerize the emulsion (emulsified The preparation is carried out in such a manner that the solid content of the acrylic polymer after the polymerization is 30 to 75% by weight, more preferably 35 to 6 % by weight. The method of the emulsion polymerization (emulsification polymerization) is not particularly limited, and may be appropriately selected from a single polymerization method, a total amount dropping method, a two-stage polymerization method in which these are combined, and the like. In the disposable polymerization method, for example, a monomer mixture, an emulsifier, and water are charged into a reaction vessel, and the emulsion is prepared by emulsification by stirring and mixing, and then a polymerization initiator and a reaction are added to the reaction vessel. The required water is used for emulsion polymerization (emulsification polymerization). Further, in the total amount dropping method, a monomer mixture, an emulsifier, and water are first added, and the dropwise addition liquid is prepared by emulsification by stirring and mixing, and the polymerization initiator and water are charged into the reaction container in advance. Then, the dropwise addition was added to the reaction vessel to carry out emulsion polymerization (emulsification polymerization). φ The average particle diameter of the emulsion particles is not particularly limited as long as it is excellent in mechanical stability or coatability, and is usually 0 〇 7 to 3 μηι, preferably 〇 μπι. When the average particle diameter is less than μ7 μm, the viscosity of the adhesive tends to be too high. When the average particle diameter exceeds 3 μm, the meltability between the emulsion particles decreases, and the cohesive force tends to decrease. The water knife-dispersed acrylic pressure-sensitive adhesive contains the above-mentioned acrylic polymer emulsion as a main component, and may contain a crosslinking agent as needed. The crosslinking agent may, for example, be a carbodiimide compound, a compound containing an oxazoline group, a polyisocyanate compound, a polyamine compound, a melamine resin, a urea resin, or an epoxy 138007.doc • 14-200941051 = fat. The amount of the crosslinking agent to be added is not particularly limited as long as it does not impair the adhesion characteristics, and is usually 0 (1) to 1% by weight in the solid content of the adhesive, and preferably 0.05 to 5% by weight of β. When the amount of the crosslinking agent added is large, there is a case where the elastic modulus of the adhesive layer is too high, and there is a decrease in the joint force. Further, 'adhesive components or other various additives can be added. Further, other known water-dispersible acrylic adhesives may be added. For example, an adhesive, a plasticizer, a filler, an antioxidant, an ultraviolet absorber, a decane coupling agent, or the like may be added as appropriate. The adhesive optical film is formed by forming an adhesive layer on at least one side of the optical film by the above-mentioned adhesive. - As a method of forming the adhesive layer, for example, a water-dispersible pressure-sensitive adhesive is applied to a release-treated separation membrane (such as curry or the like, drying to remove a polymerization solvent or the like to form an adhesive layer), and then A method of transferring an adhesive layer onto an optical film; or a method of applying a water-dispersible adhesive to an optical film, drying and removing a polymerization solvent or the like to form an adhesive layer, and the like.

As the method of forming the adhesive layer, various methods can be employed. For example, it can be used to use a knife coater (CGmma coffee (4), a mouth spray coater ("main die e〇ater", a lip D type coater (Πρ c rugged, slit-hanging coater) The method of the coating machine such as a slot die coater. The thickness of the adhesive layer is not particularly limited, and is usually 3 to 5 Å right, preferably 5 to 100 μηι, more preferably 5 to 4 〇 μιη. The adhesive optical film preferably has a mold-increasing layer between the optical film and the adhesive layer. As a material for forming the adhesion-promoting layer, it is preferred to use a polymerization having an adhesive layer 138007.doc •15·200941051. The polymer of the functional group for the reaction of the substance may, for example, be a polymer containing an oxazoline group or a polymer containing an amine group. The adhesion-promoting layer may be directly applied to the optical solution by a solution or an aqueous dispersion containing the above polymer. The film is formed on one side or both sides and dried. Preferably, the thickness of the adhesion-promoting layer after drying is usually nm 1 〇 to 450 nm, more preferably 15 to 4 〇〇 nm. When the thickness is in the above range, the adhesion between the optical film and the adhesive layer can be sufficiently increased.

As the optical film used in the adhesive optical film, for example, a polarizing plate can be cited. The polarizing plate is usually used for a transparent protective film on one side or both sides of the polarizer. The polarizer is not particularly limited, and various polarizers can be used. Examples of the polarizing plate include a hydrophilic high-knife film adsorbing iodine or a one-color dye, such as a polyethylene film, a partial methylated polyethylene film, a bake, a vinyl acetate copolymer-based partial saponified film, and the like. The dichroic substance is then obtained by uniaxial stretching; and a poly(4-) alignment film such as a dehydrated material of polyethylene glycol or a degassed hydrogenated product of polyethylene gas. Among these, a polarizer formed of a polyvinyl alcohol-based film and a dichroic substance such as a moth is preferred. The thickness of the polarizer is not particularly limited, and is usually about 5 to 8 squeaks. A polarizer for dyeing and uniaxially stretching a polyvinyl alcohol-based film with ruthenium can be produced, for example, by immersing a polyethylene film in a broken aqueous solution, dyeing the lamp, and allowing the polyglycol film Extend to 3 to 7 times the original length. Alternatively, the alcohol film may be impregnated into an aqueous solution of moth, and the aqueous solution may contain a side acid, zinc sulfate, zinc sulfide, etc. Further, the polyethylene film is impregnated before the coloring is required. Washing in water. By washing the polyvinyl alcohol film with 138007.doc • 16 - 200941051, the dirt or anti-caking agent on the surface of the polyethylene film can be washed away. The polyvinyl alcohol-based film swells to have an effect of preventing unevenness in dyeing unevenness. The stretching can be carried out after dyeing (4), and can be dyed-surface-extended, or can be dyed with moths after & In the aqueous solution or the water bath, such as acid or potassium lining, the thermoplastic resin which is excellent in transparency, mechanical money, thermal stability, moisture barrier property, and isotropic property can be used as the material constituting the transparent protective film. Specific examples of such a thermoplastic resin include cellulose resins such as cellulose triacetate, polyester resins, polyether mill resins, polyfluorene resins, polycarbonate resins, polyamide resins, and polyimine trees. a fat, a polyolefin tree, a (meth)acrylic resin, a cyclic polyolefin resin (a olefinic resin), a polyarylate resin, a polystyrene resin, a polyvinyl alcohol resin, and a mixture thereof. A transparent protective film is bonded to one side of the polarizer by an adhesive layer, and on the other side, a (meth)acrylic, an amine-based acid ester, or an urethane acrylate can be used. A thermosetting resin such as an epoxy resin or an oxygen-based resin or an ultraviolet curable resin is used as the transparent protective film. The transparent protective film may contain one or more optional additives. Examples of the additives include ultraviolet absorbers and antioxidants. , lubricant, plasticizer, mold release agent, anti-coloring agent, flame retardant, nucleating agent, antistatic agent, pigment, coloring agent, etc. The content of the above thermoplastic resin in the transparent protective film is preferably 50~ 100% by weight 'more preferably 5 〇 to 99% by weight, still more preferably 60 to 98% by weight, particularly preferably 70 to 97% by weight. /0. The content of the above thermoplastic resin in the transparent protective film is 50 weights / / below In the case of 138007.doc 17 200941051, the high transparency and the like of the thermoplastic resin may not be sufficiently exhibited. Further, as a transparent protective film, a patent publication No. 2001-343529 (WO 01/ The polymer film disclosed in 37007), for example, contains a thermoplastic resin having a substituted and/or unsubstituted styrene group on the (A) side bond, and (B) a substituted and/or unsubstituted phenyl group on the side chain and A resin composition of a nitrile-based thermoplastic resin, and a film containing a resin composition comprising an alternating copolymer of isobutylene and N-fluorenyl maleimide and an acrylonitrile-styrene copolymer is exemplified as a specific example. The film may be formed of a film formed of a mixed composition of a resin composition, etc. The phase difference of the films is small and the photoelastic coefficient is small, so that the unevenness due to the strain of the polarizing plate can be eliminated. Moreover, these membranes have a small moisture permeability and are therefore excellent in humidifying durability. The thickness of the transparent protective film can be appropriately determined, and the thickness of the film is usually about 500 or so from the viewpoints of workability such as strength and workability, and thin layer properties. Particularly preferably 1 to 3 〇〇 μιη, more preferably 5 to 2 〇〇 μηι. It is particularly suitable when the transparent protective film is 5 to 150 μηι. Further, 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 surfaces thereof, and a protective film formed of a different polymer material or the like may be used. As the transparent protective film, at least one selected from the group consisting of cellulose resin 'polycarbonate resin, cyclic olefinic resin, and (meth)acrylic resin is preferably used. The cellulose resin is a cellulose and a fatty acid. Specific examples of such a cellulose S 138007.doc -18- 200941051-based resin include trivalent Q-destroyed cellulose, diacetate fiber, cellulose dipropionate, and dipropionate. Among these, cellulose phthalate is particularly preferred. Cellulose triacetate ι帀 sells more products, which is also advantageous from the point of view of the convenience or cost. As an example of a commercially available product of cellulose triacetate, the product name "UV-50", "UV-80 "TD-TAC", and "UZ-TAC" manufactured by FuJi Film Co., Ltd. can be cited. Or KC Senes" manufactured by K〇nica. Usually, the in-plane retardation (Re) of the cellulose triacetate is almost zero. The thickness direction retardation (Rth) is about -6 nm. Further, the cellulose resin film having a small retardation in the thickness direction can be obtained, for example, by treating the above cellulose resin. For example, a method in which a substrate such as polyethylene terephthalate, $(tetra), or stainless steel coated with a solvent such as cyclopentanone or methyl ethyl ketone is applied to a common cellulose film is used. , heating and drying (for example, after (10) ~ 丨 ^ 下 加热 加热 加热 加热 加热 ( ( ( ( ( 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材 基材In a solvent such as a ketone, the obtained solution is applied onto a common cellulose resin film, and dried by heating (for example, drying at 80 to 150 ° C for about 3 to 10 minutes), and then the coating film is peeled off. Factory SH-80 Factory

The TD-80U is a cellulose resin crucible having a small retardation in the thickness direction, and a fatty acid cellulose resin film having a controlled degree of substitution of a fatty acid can be used. Generally, the cellulose triacetate used has a degree of substitution of about 28, and Rth can be reduced by controlling the degree of substitution of acetamidine to preferably 2.7. By adding the above-mentioned fatty acid-substituted cellulose resin to the dibutyl phthalate, 138007.doc -19- 200941051, the aniline, the brewing, the amphibious citric acid Plasticizers such as B Sa are used to control Rth to be small. The addition amount of the plasticizer $t 2 is preferably 4 parts by weight or less, more preferably 1 to 15 parts by weight, based on 100 parts by weight of the fatty acid cellulose resin. As a specific example of the cyclic polyolefin resin, cerium-based resin is preferred. The cyclic-dilute hydrocarbon-based resin is a general term for the polymerization of a cyclic-dilute hydrocarbon as a polymerized unit. For example, Japanese Patent Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The resin disclosed in the publication and the like. Specific examples thereof include a ring-opening (co)polymer of a cyclic olefin, an addition polymer of a cyclic hydrocarbon, a ring, a copolymer of a hydrocarbon and an α-dilute hydrocarbon such as ethylene or propylene (having a representative The random copolymer is a graft polymer formed by modifying the unsaturated carboxylic acid or a derivative thereof, and the like, and the like. Specific examples of the cyclic olefin include a norbornene-based monomer. As the cyclic polyolefin resin, various products are commercially available. For the specific example, the product name "ΖΕ〇ΝΕχ" and "ZEONOR" manufactured by 曰本ΖΕΟΝ股份有限公司, the trade name "ARTON" manufactured by jSR Co., Ltd., and the trade name r T〇pAS manufactured by TICONA" , Mitsui. Chemical Co., Ltd. manufactured under the trade name "APEL". As the (fluorenyl) acrylic resin, the Tg (glass transition temperature) is preferably 115 C or more, more preferably 12 Å. 〇 Above, and even better is 125. 〇 Above, especially good is 130. (The above: The Tg is excellent in the durability of the polarizing plate. The upper limit of the Tg of the (meth)acrylic resin is not particularly limited, and the moldability and the like are not particularly limited. In other words, the preferred 138007.doc -20-200941051 is 170 ° C or lower. A film having an in-plane retardation (Re) and a thickness direction retardation (Rth) of almost zero can be obtained from a (meth)acrylic resin. The methyl (meth)acrylic resin can be used in any suitable range of the (meth)acrylic resin Q, and poly(methyl) such as polymethyl methacrylate can be used as long as it does not impair the effects of the present invention. Acrylate, methyl methacrylate-(meth)acrylic acid copolymer, methyl methacrylate-(meth) acrylate copolymer, methacrylate-acrylate _(meth)acrylic acid copolymer, Methyl (meth) acrylate styrene copolymer (MS resin, etc.), a polymer having a ruthenium ring hydrocarbon group (for example, methyl methacrylate-methyl methacrylate cyclohexyl ester copolymer, methyl group) Methyl acrylate _(mercapto) acrylate ester copolymer, etc. A poly(meth)acrylic acid C1 -6 alkyl ester such as poly(methyl) acrylate may be mentioned. More preferably, methyl methacrylate is used as a main component (50 to 1% by weight, compared with A methyl methacrylate-based resin having a weight of 7 〇 to 1 〇〇 is preferable. Specific examples of the (mercapto) acrylic resin include, for example, Mitsubishi Rayon (MITSUBISHI RAYON) Co., Ltd. The (fluorenyl) acrylic resin having a ring structure in the molecule disclosed in the publication of the Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. 4-7-296, which is incorporated by the intramolecular or intramolecular cyclization reaction. The obtained (meth)acrylic resin is a (meth)acrylic resin, and a (meth)acrylic resin having a inner ring structure can also be used because the inner vinegar ring structure is used. The (meth)acrylic resin has high heat resistance, high transparency, and high mechanical strength by biaxial stretching. 138007.doc 21 200941051 As a (meth)acrylic resin having a lactone ring structure, a : Japan Japanese Patent Laid-Open Publication No. 2000-230016, Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The (meth)acrylic resin having a lactone ring structure disclosed in JP-A No. 2,5146, No. 84, etc. The (meth)acrylic resin having a lactone ring structure preferably has the following The cyclic structure represented by the formula (Chemical Formula 1). [Chemical 1] OOOR2 ψ

«A R R R and R each independently represent a hydrogen atom or an organic residue having 1 to 20 carbon atoms. Further, the organic residue may contain an oxygen atom. In the structure of the (meth)acrylic resin having an internal vinegar ring structure, the content of the internal vinegar ring structure represented by the formula (Chemical Formula 1) is preferably from 5 to 9 % by weight, more preferably 10% by weight. ～70% by weight, and more preferably 1〇~6〇% by weight '(4) It is preferably 1()~5〇% by weight β if it has an internal vinegar ring structure (in the structure of the acrylic acid resin) When the content ratio of the internal vinegar ring structure represented by the formula is less than 5% by weight, the heat resistance, solvent resistance, and surface hardness may be insufficient in the (meth)acrylic resin. If the content of the lactone ring structure represented by the formula (10) is more than 90% by weight in the structure of the (meth)acrylic resin having an internal vinegar ring structure, the olefinic resin may be lacking. Forming workability. Soil 138007.doc -22· 200941051 The mass average molecular weight (sometimes referred to as weight average molecular weight) of the (fluorenyl) acrylic resin having a lactone ring structure is preferably iOOO 2,000,000, more preferably It is 5000~1000000, and even better is 10000~5〇〇〇〇〇, especially good is 50000 ～50000. If the mass average molecular weight is outside the above range, it is not preferable from the viewpoint of moldability. The Tg of the (meth)acrylic resin having an internal vinegar ring structure is preferably U5C or more, more preferably It is 12 〇. (: The above and further preferably i25 〇 c & above, particularly preferably 13 (TC or more. Since the (meth)acrylic resin has a Tg of 115 ° C or more, for example, when it is made When the transparent protective film group is incorporated in a polarizing plate, the durability is excellent. The upper limit of the Tg of the (fluorenyl) acrylic resin having a lactone ring structure is not particularly limited, and from the viewpoint of moldability and the like. In other words, it is preferably not more than 1 〇〇c. In the case of a (mercapto)acrylic resin having a lactone ring structure, the use of a molded article obtained by subjecting it to injection is based on the method. The higher the total light transmittance measured, the better, preferably 85% or more. More preferably, it is above 嶋, and more preferably 鸠. The total light transmittance is the standard of transparency, if the total light transmittance is not At 85%, transparency may decrease. The transparent protective film is generally used when the front phase difference is less than 4 〇 (10) and the thickness direction retardation is less than 80 nm. The front phase difference is represented by η -. The thickness direction phase difference is represented by Rth = (nx_nz) xd. The Nz coefficient is represented by Nz = (nx_nz) / (nx ny). [The refractive index of the film in the slow axis direction, the fast axis direction, and the thickness direction is set to the shape, the town, and the ', respectively, and the thickness of the film. The direction of the slow axis is the maximum refractive index in the film plane 138007.doc •23- 200941051]. Moreover, the transparent protective film is preferably as colorless as possible. The phase difference in the thickness direction can be better used. _9〇nm~+75 protective film. By using the phase difference (Rth) in the thickness direction of 9 〇 nm to +75 nm, the coloring (optical coloring) of the polarizing plate caused by the transparent protective film can be almost eliminated. The thickness direction phase difference (Rth) is more preferably _8 〇 nm 〜 +6 〇 nm ' particularly preferably _7 〇 nm 〜 +45 (10). On the other hand, as the transparent protective film, a phase difference plate having a front phase difference of 40 nm or more and/or a thickness direction retardation of a phase difference of more than a claw can be used. The front phase difference is usually controlled within the range of 4 〇 to 2 〇〇 nm, and the thickness direction phase difference is usually controlled within the range of 8 〇 to 3 〇〇. When a retardation film is used as the transparent protective film, the retardation film also functions as a transparent protective film, so that the thickness can be reduced. Examples of the phase difference plate include a biaxial refractive material formed by uniaxial or double-extraction treatment of a symmetrical polymer material, an alignment film of a 16-crystal polymer, and a film.

Supports alignment layers of liquid crystal polymers, etc. The thickness of the phase difference plate is also not particularly limited and is usually about 20 to 150 μm. Examples of the polymer material include: ethylene glycol, polybutylene aldehyde, poly(ryryl vinyl ether), polyacrylic acid hydroxyacetate, hydroxyethyl cellulose, propyl propyl cellulose, fluorenyl cellulose. , polycarbon _, poly vinegar, poly milling, polyethylene terephthalate, polyethylene naphthalate, polyether polyamine, polysulfoxide, polyphenylene sulfide, polyphenylene ether, poly Allylamine, polysulfon, polystyrene, cellulose resin, cyclic polyalkylene resin (norcene-based resin) or various binary, ternary copolymers, graft copolymerization , blends, etc. These polymer materials are formed by extension or the like 138007.doc •24- 200941051 into an alignment material (stretching film). As the liquid crystal polymer, for example, a main chain type or a side chain type in which a linear atomic group (liquid crystal priming group) which imparts ugly conjugation to liquid crystal alignment in a main chain or a side chain of a substance can be introduced. For example, as a specific example of the main chain type liquid material, for example, a nematic alignment of a structure in which a base is bonded to a base: a liquid:: base structure is exemplified. A vinegar-based liquid crystal polymerized disc type polymer or a cholesteric polymer, etc. Specific examples of the side chain type liquid crystal ginseng polymer include the following: polyglycol oxide, polyacrylic acid vinegar, polymethacrylic acid brewing or polypropylene The diacid is used as a primary bond skeleton, and has a liquid crystal original base portion containing a para-substituted cyclic compound unit which is a nematic alignment imparting group as a side bond or the like via a spacer base group containing a conjugating atomic group. For example, a solution of a liquid crystal polymer is developed by rubbing a surface of a film of a polyimide film or a polyvinyl alcohol formed on a glass plate, and a mixture of an oblique oxide and an oxidized stone. The retardation plate is obtained by heat treatment on the surface to be processed, and the phase difference plate can be, for example, various wave plates or compensated for coloring or viewing angle caused by birefringence of the liquid crystal layer. An appropriate phase difference corresponding to the phase difference may be one in which two or more kinds of phase difference plates are laminated to control optical characteristics such as a phase difference, etc. The phase difference plate can be selected and used to satisfy nx=ny>nz for various uses. , nx>ny>nz, nx>ny=nz, nx>nz>ny, nz=nx>ny, nZ>nx>ny,nz>nx=ny relationship. Again, the so-called ny=nz means not only The case where ny is exactly the same as nz, and the case where ny and (10) are substantially the same. 0 138007.doc 25· 200941051 For example, in the phase difference plate satisfying nx>ny> nz, it is preferable to use the front phase difference to satisfy 40~ 100 nm, the phase difference in the thickness direction satisfies 100-320 nm, and the Nz coefficient satisfies 1.8 to 4.5. For example, in a phase difference plate (anode A plate) satisfying nx > ny = nz, it is preferable to use the front phase difference to satisfy 1 〇〇~200 nm. For example, satisfy nz=nx>ny In the difference plate (cathode A plate), it is preferable to use a front phase difference of 100 to 200 nm. For example, in a phase difference plate satisfying nx > nz > ny, it is preferable to use a front phase difference of 150 〜 300 nm, the Nz coefficient satisfies more than 0 and is 0.7 or less. Further, as described above, for example, nx=ny>nz, nz>nx>ny or nz>nx=ny can be used. The transparent protective film can correspond to the application. The liquid crystal display device is suitably selected. For example, in the case of VA (Vertical Alignment, including MVA (Multi-Domain Vertical Alignment), PVA (Patterned Vertical Alignment)), it is preferable to use a polarizing plate. The transparent protective film of at least one (liquid crystal cell side) has a phase difference. As a specific phase difference, it is desirable that Re = 0 to 240 nm and Rth = 0 to 5.00 nm. In the case of a three-dimensional refractive index, it is preferable that nx > ny = nz, nx > ny > nz, nx > nz > ny, nx = ny > nz (anode A plate, biaxial, cathode C plate). In the VA type liquid crystal display device, a combination of an anode A plate and a cathode C plate or a single biaxial film is preferably used. When a polarizing plate is used above and below the liquid crystal cell, the liquid crystal cell can have a phase difference both above and below, or can have a phase difference between any of the upper and lower transparent protective films.

For example, when IPS (In-Plane Switching) includes FFS 138007.doc -26- 200941051 (Fringe Field Switching 'Fence electric field switching, one of the polarizing plates can be used to have a phase difference or not Any of the cases having a phase difference ❹, for example, in the case where there is no phase difference, it is preferable that the liquid crystal cell has no phase difference above (the liquid crystal cell side). When there is a phase difference Preferably, the liquid crystal cell has a phase difference between the upper and lower sides, or any one of the upper and lower sides has a phase difference. The shape (for example, the upper side is a biaxial film satisfying the relationship of nx>na>ny, and the lower side does not have In the case of phase difference, either the anode side is the anode A plate and the lower side is the anode c plate. In the case of a phase difference, it is desirable that Re=-500~500 nm, Rth=-500~5 The range of 〇〇nm is preferably nX>ny=nz, nx>nz>ny, nz>nx=ny,nz>nx>ny (anode A plate, biaxial, anode c). Board). In addition, m will be the above film with phase difference The above protective function is imparted to the transparent protective film which does not have a phase difference, and the transparent protective film is subjected to surface modification treatment before the application of the adhesive in order to improve the adhesion to the polarizer. Specific examples of the treatment include corona treatment, plasma treatment, flame treatment, ozone treatment, primer treatment, glow treatment, and chemical treatment, treatment with a coupling agent, etc. Further, an antistatic layer can be suitably formed. For the surface of the transparent protective film which is not followed by the polarizer, a hard coat layer may be formed or an anti-reflection treatment may be performed, and a treatment for preventing adhesion, diffusion or anti-glare may be applied. The hard coating treatment is for preventing the surface of the polarizing plate from being damaged. The H layer of the implementer can be attached to the transparent film by, for example, a hardened film having a hardness or a sliding property formed by a suitable ultraviolet curable 138007.doc •27·200941051 type resin such as an acrylic acid or a sulphuric acid system. The surface of the protective film is formed. The anti-reflection treatment is performed to prevent external light reflection on the surface of the polarizing plate, and may be formed according to the previous The anti-adhesive treatment is performed to prevent adhesion to an adjacent layer (for example, a diffusing plate on the backlight side). The anti-glare treatment A prevents the external light from being on the surface of the polarizing plate. The reflection may be performed to prevent the polarizing plate from passing through the light, and the like may be formed by, for example, a method in which the surface is roughened by a sandblasting method or an embossing method, or a method of blending transparent fine particles is used. The surface of the protective film is provided with a fine concavo-convex structure. For the fine particles contained in the surface fine concavo-convex structure, for example, cerium oxide, aluminum oxide, titanium oxide, oxidized oxidized, tin oxide, or the like having an average particle diameter of 〇5 to 2 Å can be used. Inorganic fine particles, such as indium oxide, cadmium oxide, or cerium oxide, which are conductive, and transparent fine particles such as organic fine particles formed of a crosslinked or uncrosslinked polymer. In the case where the surface fine uneven structure is formed, the amount of the fine particles used is usually about 2 to 70 parts by weight, preferably 5 to 5 parts by weight, based on 1 part by weight of the transparent resin forming the surface fine uneven structure. The anti-glare layer can also serve as a diffusion layer (such as a viewing angle expansion function) for diffusing the polarizing plate through light to expand the viewing angle or the like. Further, the antireflection layer, the anti-adhesion layer, the diffusion layer or the anti-glare layer may be provided on the transparent protective film itself, or may be separately provided as an optical layer different from the transparent protective film. An adhesive is used in the subsequent treatment of the above polarizer and the transparent protective film. Examples of the adhesive agent include an isocyanate-based adhesive, a polyvinyl alcohol-based adhesive, 138007.doc -28 - 200941051, a gelatin-based adhesive, an ethylene-based latex, and an aqueous polyester. The above-mentioned subsequent agent is usually used as an adhesive containing an aqueous solution, and usually contains 5% to 60% by weight of a solid matter. In addition to the above, examples of the adhesive for the polarizer and the transparent protective film include an ultraviolet curable adhesive, an electron beam curable (tetra) agent, and the like. The electron beam-curable polarizing plate exhibits excellent adhesion to the above various transparent protective films by an adhesive. Further, the filler used in the present invention may contain a metal compound filler. Further, examples of the optical film include a reflector or a reflection-transmissive plate, a phase difference plate (including a wave plate of 1/2 or 1/4 or the like), a visual compensation film, a brightness enhancement film, and the like, and a liquid crystal display device is formed. Used as an optical layer at the same time. These may be used alone as an optical film, or may be laminated on the above polarizing plate in one or two or more layers in actual use. Particularly preferred is a reflective polarizing plate or a semi-transmissive polarizing plate formed by further laminating a reflecting plate or a semi-transmitting reflecting plate on a polarizing plate, and an elliptically polarizing plate or a circularly polarized light formed by further laminating a phase difference plate on the polarizing plate. The plate or the yoke further laminates a wide viewing angle polarizing plate formed by the visual compensation film on the polarizing plate, or further forms a polarizing plate formed by the brightness enhancing film on the polarizing plate. The reflective polarizing plate is obtained by providing a reflective layer on a polarizing plate, and is used to form a liquid crystal display device of a type that reflects incident light from the viewing side (display side) and can be omitted. A light source such as a backlight makes the liquid crystal display device easy to be thinned. The reflective polarizing plate can be formed by a suitable method such as a method of providing a reflective layer containing a metal or the like on one surface of the polarizing plate via a transparent protective layer or the like. As a specific example of the reflective polarizing plate, a single surface of the transparent protective metal which is subjected to the extinction treatment of 138007.doc • 29-200941051 as needed may be exemplified by a reflective surface containing aluminum or the like (4). Disagreement (four) and so on. In addition, a two-dimensional fine concavo-convex structure is formed to form a reflective layer having a fine concavo-convex structure and two fine concavo-convex structures. The above-mentioned fine concavo-convex or glare appearance suppresses the advantages of uneven brightness and lightness...

Γ: The protective film also has the advantage that when the incident light and the reflected light thereof pass through the protective film, the specific light is diffused, thereby further suppressing uneven brightness and the like. Reflecting the fine concavo-convex structure on the surface of the transparent protective film, the reflective layer of the fine concavo-convex structure, for example, can be directly attached to the transparent protection by a suitable method such as m test mode, material electricity type, antimony f or electric ore method. Formed by methods such as the surface of the layer. The reflecting plate may be formed by providing a reflecting layer on a suitable film of the transparent film to form a reflecting sheet or the like without using a transparent protective film directly disposed on the polarizing plate. Further, since the reflective layer usually contains a metal, it is prevented from being lowered by the oxidation, and the viewpoint of maintaining the initial reflectance for a long period of time or avoiding the viewpoint of additionally providing a protective layer is preferable. A form of use in which a protective film, a polarizing plate, or the like is covered. Further, the semi-transmissive polarizing plate can be obtained by replacing the reflective layer of the reflected light with the semi-transmissive reflective layer such as a half mirror which reflects and transmits light. The transflective 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 a liquid crystal display device or the like is used in a relatively bright environment, the semi-transmissive polarizing plate is brought from the viewing side 138007 .doc -30- 200941051 (display side) is reflected by the incident light to display an image. In a relatively dark environment, an image is displayed using a built-in power source such as a backlight built in the back side of the transflective polarizer. That is, the semi-transmissive polarizing plate is useful for forming a liquid crystal display device of the type described below, that is, the liquid crystal display device is equivalent to a relatively bright environment, which can save energy for using a light source such as a backlight, and can be used in a relatively dark environment. Built-in power supply for display. An elliptically polarizing plate or a circularly polarizing plate formed by further laminating a phase difference plate on a polarizing plate will be described. A phase difference plate or the like is used for converting linearly polarized light into elliptically polarized or circularly polarized light, converting elliptically polarized or circularly polarized light into linearly polarized light, or changing the direction of polarization of linearly polarized light. In particular, as a phase difference plate that converts linearly polarized light into circularly polarized light or converts circularly polarized light into linearly polarized light, a so-called 1/4 wave plate (also referred to as λ/4 plate) is used. The 1 /2 wave plate (also known as the λ/2 plate) is usually used to change the direction of the polarization of the linearly polarized light. The circularly polarizing plate can be effectively used to compensate (prevent) the coloring (blue or yellow) generated by the birefringence of the liquid crystal layer in a super twisted nematic (STN) type liquid crystal display device, thereby performing the coloring without the above coloring. The situation of black and white display, etc. Further, the elliptically polarizing plate whose three-dimensional refractive index is controlled can also compensate (prevent) the coloring which occurs when the face of the liquid crystal display device is viewed from the oblique direction, which is preferable. The circularly polarizing plate can be effectively used, for example, for adjusting the image hue of a 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 obtained by laminating a polarizing plate, a reflective polarizing plate and a phase difference plate in an appropriate combination. The ellipse 138007.doc -31 - 200941051 circular polarizing plate or the like can also be sequentially laminated in the manufacturing process of the liquid crystal display device by forming a combination of a (reflective) polarizing plate and a phase difference plate. In the case of forming an optical film such as an elliptically polarizing plate in advance, it is excellent in quality stability, laminating workability, and the like, and can improve the manufacturing efficiency of a liquid crystal display device or the like. The visual compensation film is used to expand the film of the viewing angle ′ so that the face is viewed even in a direction slightly inclined from the screen perpendicular to the screen of the liquid crystal display device.

The image also looks clearer. Such a visually-compensated retardation plate includes, for example, an alignment film such as a retardation film or a liquid crystal polymer, or an alignment layer in which a liquid crystal polymer or the like is supported on a transparent substrate. A common phase difference plate is a polymer film having birefringence obtained by uniaxially extending in the plane direction, and a phase difference plate used as a visual compensation film is used for biaxial stretching in the plane direction. a polymer film having birefringence; or a birefringent polymer or a tilting alignment such as a birefringent polymer having a refractive index in the thickness direction which is uniaxially extended in the plane direction and extending in the thickness direction The stretch film or the like ◎ as the oblique alignment 臈, for example, the polymer film is subjected to a heat shrink film and the film is stretched or/or shrunk by a shrinking force generated by heating. Or the liquid crystal polymer is obliquely aligned to the formed person or the like. The material raw material polymer of the phase difference plate is the same as the polymer described in the above phase difference plate, and can be used to prevent coloring or the like caused by a change in the viewing angle based on the phase difference of the liquid crystal cell, or to enlarge the visual recognition. A good perspective, etc., is suitable for the purpose. Further, in terms of achieving a wide viewing angle of good visibility, it is preferable to use a cellulose triacetate film to support an alignment layer containing a liquid crystal polymer, in particular, a disk type liquid crystal polymerization. An optically compensated phase difference plate of the optically anisotropic layer of the oblique alignment layer of the object. A polarizing plate obtained by laminating a polarizing plate and a brightness enhancing film is usually used on the back side of the liquid crystal cell. The brightness enhancement film exhibits characteristics such as that when a backlight of a liquid crystal display device or the like is incident, or when natural light is incident from the back side, the brightness enhancement film polarizes a specific polarization axis or a specific direction. Circular light is reflected to transmit other light; a polarizing plate formed by laminating a brightness enhancement film and a polarizing plate emits light from a light source such as a backlight to obtain a transmitted light of a specific polarization state and causes light other than the specific polarization state Reflect without passing through. The light reflected on the brightness enhancement film surface is further inverted by a reflection layer or the like provided on the rear side thereof, and then incident into the brightness enhancement film again, and the brightness enhancement film forms part or all of the incident light. By transmitting 'in a specific polarization state, the amount of light transmitted through the brightness enhancement film is increased, and the polarization which is hard to be absorbed by the polarizer is supplied, so that the amount of light available for liquid crystal display image display or the like is increased, whereby the brightness can be improved. In other words, when light is incident on the back side of the liquid crystal cell from the back side of the liquid crystal cell without using a brightness enhancement film, most of the light whose polarization direction does not coincide with the polarization axis of the polarizer is absorbed by the polarizer. Cannot pass the polarizer. That is, although the characteristics of the polarizer used differ depending on the characteristics of the polarizer used, usually about 50% of the light is absorbed by the polarizer, and the amount of light available for liquid crystal image display or the like is correspondingly reduced, resulting in darkening of the image. The brightness enhancement film allows light having a polarization direction that is absorbed by the polarizer to be incident on the polarizer, and is reflected once on the brightness enhancement film, and further through a reflective layer or the like provided on the rear side of the brightness enhancement film. After the light is reversed, 138007.doc -33 - 200941051 is again incident on the brightness enhancement film. The brightness enhancement film repeatedly performs the above operation, so that only the polarization direction of the light reflected and inverted between the two is passed. The polarized light in the polarizing direction of the polarizer passes through the brightness enhancement film and is supplied to the polarizer. Therefore, light such as a backlight can be efficiently used for image display of the 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 of the brightening/reflecting is advanced toward the reflecting layer or the like, and the diffusing plate is provided to uniformly diffuse the passing light while eliminating the polarized state and becoming a non-polarized state. In other words, the operation is performed in such a manner that the light in the natural light state advances toward the reflective layer or the like, is reflected by the reflective layer or the like, and is again incident on the brightness enhancement film through the diffusion plate, so that the brightness enhancement film and the reflection layer are used. Between the setting, the diffusing plate that restores the polarized light to the original natural light can maintain the brightness of the display screen, and at the same time reduce the uneven brightness of the display screen, thereby providing a uniform and bright picture. It is considered that by providing the diffusion plate, the number of times of reflection of the initial incident light is moderately increased, and combined with the diffusion work of the diffusion plate, thereby providing a uniform and bright display screen. As the brightness enhancement film, for example, a multilayer film of a dielectric film or a multilayer laminate of a film having a different refractive index anisotropy can be used, and a linear polarized light of a specific polarization axis is transmitted. Other characteristics of light reflection; and such as the alignment film of the cholesteric liquid crystal polymer or the alignment of the liquid crystal layer to support the film substrate, exhibiting any kind of circular polarization of left-handed or right-handed rotation Other characteristics of light transmission. Therefore, in the above-described type of brightening 138007.doc 34-200941051 film which transmits a linearly polarized light of a specific polarizing axis, the transmitted light can be directly incident into the polarizing plate in accordance with the polarization axis of the polarizing plate, thereby suppressing polarization. The absorption loss caused by the plate allows the transmitted light to pass through efficiently. On the other hand, a brightness enhancement film of a type that transmits circularly polarized light like a cholesteric liquid crystal layer can also directly inject circularly polarized light into a polarizer. However, from the viewpoint of suppressing absorption loss, it is preferable to pass a phase difference. The plate converts the circularly polarized light into a linearly polarized light and then injects it into the polarizing plate. Further, circularly polarized light can be converted into linearly polarized light by using a quarter-wave plate as the retardation plate. A phase difference plate functioning as a quarter-wave plate in a wide-wavelength region such as a visible light region can be obtained, for example, by a phase difference of a function of 1/4 wave plate for pale light having a wavelength of 55 〇 nm. The plate has a phase difference layer exhibiting other phase difference characteristics, for example, a phase difference layer which functions as a 1/2 wave plate, and the like. Therefore, the phase difference plate disposed between the polarizing plate and the brightness enhancement film may be one or more layers including two or more layers. Further, in the cholesteric liquid crystal layer, by combining the reflection wavelengths to form an arrangement structure of two or more layers, it is possible to obtain a circularly polarized light in a wide wavelength range such as a visible light region, and based on this, Through a wide range of wavelengths through the circular polarization. Further, the polarizing plate may be formed by laminating a polarizing plate and two or more optical layers as in the above-described polarization separating type polarizing plate. Therefore, a reflective elliptically polarizing plate or a semi-transmissive elliptically polarizing plate formed 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 the polarizing plate may be formed by sequentially stacking the layers in the manufacturing process of the liquid crystal display device or the like, 138007.doc -35 - 200941051, but formed by laminating in advance. In the case of optical enthalpy, it is excellent in quality stability, assembly workability, etc., and can be improved in the manufacturing steps of a liquid crystal display device or the like. Adhesive layer # Appropriate attachment mechanism can be used for lamination. When the polarizing plate is bonded to another optical layer, the optical axis can be appropriately arranged according to the phase difference characteristic of the target or the like. The optical film-attached glass substrate of the present invention is attached to a glass substrate (liquid crystal) to which an adhesive optical film is attached. The adhesive layer of the adhesive optical film is formed of a water-dispersible adhesive containing an emulsifier, and when bonded to a glass substrate, it exhibits high adhesion immediately after adhesion, and even in a high-temperature and high-humidity environment. Gives excellent durability. The peeling method of the adhesive optical film of the present invention is characterized in that the glass substrate with the optical film is exposed to a temperature of 4 〇〇c or more and a relative humidity of 8% or more (condition i) or a temperature of 50°. After c or more and the relative humidity is 70% or more (Condition 2), the adhesive optical film is peeled off from the glass substrate. When the glass substrate with the optical film is exposed to the conditions of the condition 丨 or the condition 2, the adhesive force at the interface between the adhesive layer and the glass substrate is lowered, whereby the adhesive optical film can be easily peeled off. Moreover, even if the adhesive optical film is bonded to the glass substrate for a long time in a two-temperature environment and the adhesion force is 20 N/25 mm or more, it can be exposed to the condition 丨 or condition 2, Reduce the adhesion force to below 10 N/25 mm width. Therefore, the glass substrate of a large size can also be excellent in workability and peeling easily. The preferred conditions for the exposure treatment are a temperature of 80 ° C or higher and a relative humidity of 80% or more. Moreover, the temperature of the exposure treatment is preferably i 〇 (rc or less. If the temperature of the exposure treatment exceeds 1 〇 (TC, the liquid crystal display as the adherend may be damaged. Exposure treatment) The time is preferably 1 hour or more, more preferably 2 hours or more. In the case of less than 1 hour, the adhesive layer cannot sufficiently absorb water, and the adhesion at the interface between the adhesive layer and the glass substrate cannot be sufficiently lowered. Therefore, when peeling, the glass substrate is damaged or a large amount of paste residue is generated to cause a decrease in reworkability. On the other hand, the exposure treatment time is usually 48 hours or less. Since the effect is hardly changed even if it exceeds 48 hours, it is manufactured. The present invention is not specifically limited by the examples, but the present invention is not limited to the examples. Further, parts and % in each example are based on weight. Production Example 1 (Preparation of Monomer Preform Emulsion) 88 parts of butyl acrylate, 5 parts of N-cyclohexyl methacrylate, 5 parts of acrylic acid, and mono [poly(oxypropylene) fluorenyl group were added to each apparatus. Ethyl ester phosphate (average degree of polymerization of propylene oxide is about 5 〇) 2 parts and propylene methoxy propyl dimethoxy decane (Shin-Etsu Chemical Co., KBM-503) 0.03 parts and mixed 'preparation a monomer mixture. Then, a reactive emulsifier (First Industrial Pharmaceutical Co., Ltd., AqUAL〇n HS-1025) 20 g and 446 g of ion-exchanged water were added to 500 g of the monomer mixture, using a homogenizer (special machine (The stock was emulsified by stirring at 5000 (rpm) for 5 minutes to prepare a monomer pre-emulsion. 138007.doc 37- 200941051 (Preparation of water-dispersed acrylic adhesive) with stirring blade, thermometer, In a reaction vessel of a nitrogen gas introduction tube and a condenser, 96 g of a monomer pre-emulsion, 275 g of ion-exchanged water, and a reactive emulsifier AQUALON HS-1〇25 (40 g) were added, and the reaction vessel was purged with nitrogen. 5 g of ammonium persulfate was added and polymerization was carried out for 1 hour at 65 <>c. Then, the temperature in the reaction vessel was raised to 75. 〇, 0.35 g of ammonium persulfate was added. Thereafter, it was passed for 3 hours. Add 869 g of monomer pre-emulsion to the reaction volume in an hour Thereafter, the polymerization reaction was carried out for 3 hours after the dropwise addition, and then the polymerization reaction was carried out for 3 hours at 75 ° C while replacing with nitrogen to obtain an emulsion having a solid content of 40%. Then, the obtained emulsion was cooled to a chamber. The water-dispersed acrylic adhesive was prepared by adding 10% ammonia water to the pH to adjust the pH to 8. (Formation of the adhesive layer) The water-dispersible propionic acid-based adhesive was adhered to dryness. The coating layer is applied to the release film in a thickness of 23 μm (Mitsubishi Chemical Polyester)

(Mitsubishi Chemical Polyester Film), DIAFOIL MRF3 8, PET film) on one side and dried at 120 ° C for 2 minutes to form an adhesive layer. (Production of polarizing plate) A polyvinyl alcohol film having a thickness of 80 μm was stretched to 5 times in an iodine solution at 40 °C. Thereafter, the polyvinyl alcohol film was picked up from the iodine solution, and a polarizer was obtained by drying at 5 minutes (using a polyvinyl alcohol-based adhesive) to coat the cellulose triacetate on both sides of the polarizer. Membrane, thereby making a polarizing plate. (Production of Adhesive Polarizing Plate A) 138007.doc •38- 200941051 Acrylic polymerization containing oxazoline groups in a water/isopropyl alcohol (1/1 by weight) mixed solution The viscous coating agent was prepared by diluting the solid material (EPOCROS WS-700) to a solid content of 〇·25°/〇. The adhesion coating agent was applied to the above polarized light using Meyer bar #5. On one side of the board, it was dried at 40 ° C for 2 minutes to form a tackifying layer. Then, the above adhesive layer was transferred onto the adhesion-promoting layer to prepare an adhesive polarizing plate A. - (Measurement of the force) The initial adhesion force of the adhesive polarizing plate A and the adhesion force after 60 ° C / 100 hours were measured by the following method. As a result, the initial adhesion force was 7.8 (N/25 mip), after 60 ° C / 100 hours. The subsequent force is 36.0 (N/25 mm). <Initial adhesion force> The adhesive polarizing plate A is cut into a width of 25 mm to obtain a sample, and 2 kg is used. The roll was crimped once on the glass substrate (Corning (Corning #1737)) and attached to the glass substrate, and then placed in a 5 〇〇c, 5 atmosphere autoclave for 15 minutes. Thereafter, it was cooled to 25 〇 c. Then, the sample was peeled off from the glass substrate using a tensile tester at a peeling angle of 180. The peeling speed was 300 mm/min, and the adhesion at this time was measured (N). /25 mm) • <60 ° C / adhesion after 100 hours>, the adhesive polarizing plate A was cut to a width of 25 mm to obtain a sample, and a 2 kg roller was used on a glass substrate (Corning). The sample was crimped back and forth on Corning #1737 to be attached to a glass substrate, and then placed in a 5 Torr <t, 5 atmosphere autoclave for 15 minutes, followed by 6 Torr. Allow to stand for 1 hour in an environment with a humidity of 3〇%, then cool to 25. (:. After 138007.doc -39- 200941051, use a tensile tester to have a peeling angle of 180%. The peeling speed is The sample was peeled off from the glass substrate at a condition of 300 mm/min, and the adhesion (N/25 mm) at this time was measured. Example 2 (Preparation of Acrylic Polymer Solution) In a reaction vessel equipped with a stirring blade, a thermometer, a nitrogen introduction tube, and a condenser, '100 parts of butyl acrylate, 5 parts of acrylic acid, benzoyl peroxide with 0.1 parts, and ethyl acetate B were added. The ester was prepared as a monomer solution having a monomer concentration of 80%. One side was stirred while introducing a nitrogen gas for 1 hour to carry out nitrogen replacement, and the liquid temperature in the reaction vessel was maintained at around 60 ° C for 6 hours. 'This produces an acrylic polymer solution. The acrylic acid polymer has a weight average molecular weight of 1.6 million. (Preparation of Acrylic Adhesive) In 100 parts (solid matter) of the above acrylic polymer solution, 0.8 parts of Dolce & sulphuric acid vinegar compound (Nippon P〇lyUrethane, ❹CORONET L) was added. To prepare an acrylic adhesive. (Formation of Adhesive Layer) The above-mentioned acrylic adhesive is applied to a release film (Mitsubishi Chemical Polyester), DIAFOIL MRF3 8, PET film in such a manner that the thickness of the adhesive layer after drying is 21. On one side of the substrate, it was dried at i5 ° °c for 3 minutes to form an adhesive layer. (Production of Adhesive Polarizing Plate B) The adhesive layer was transferred onto a polarizing plate to prepare an adhesive polarizing plate B ° 138007.doc 200941051 (measurement of force). The adhesive polarizing plate B was measured in the same manner as described above. The initial adhesion force and the adhesion after 60 ° C / 1 hr. As a result, the initial adhesion force was 14.8 (N/25 mm) 'The adhesion force after 60 ° C / 100 hours was 31 〇 (N / 25 mm) 〇 Production Example 3 - (Formation of the adhesive layer) In Production Example 1 Water-dispersed acrylic adhesive, added as a cross

10 A mixture of the iron and the imine compound (Nissin Textile Co., Ltd.' CARBODILITE E-04) to obtain an adhesive composition. Further, the amount of the crosslinking agent added is 〇4 weight 〇/〇 in the solid content of the water-dispersible acrylic pressure-sensitive adhesive. Then, the adhesive composition was applied to one side of a release film (Mitsubishi Chemical Polyester Co., Ltd., DIAF 〇IL MRF38, PET film) so that the thickness of the dried adhesive layer was 23 μm. The film was dried at 120 ° C for 2 minutes to form an adhesive layer. (Production of Adhesive Polarizing Plate C) An adhesive polarizing plate C was produced in the same manner as in Production Example 1 except that the above adhesive layer was used. (Measurement of the force) The initial adhesion force of the adhesive polarizing plate C and the adhesion force after 60 ° C / 100 hours were measured in the same manner as described above. As a result, the initial adhesion force was 2.3 (N/25 mm). The adhesion force after 60 ° C / 100 hours is 30 (N / 25 mm) or more. Production Example 4 (Formation of Adhesive Layer) 138007.doc 200941051 In the water-dispersed acrylic adhesive of Production Example 1, a carbodiimide compound as a crosslinking agent (Nissin Textile Co., Ltd., carb〇dilite) was added. Adhesive composition was obtained in E-04). Further, the amount of the crosslinking agent added is in the solid content of the water-dispersible acrylic pressure-sensitive adhesive. /〇. Then, the adhesive composition is applied to one side of a release film (Mitsubishi Chemical Polyester (diene), diaf〇il - MRF38, PET film) so that the thickness of the dried adhesive layer reaches 23 μm. The adhesive layer was formed by drying at 120 ° C for 2 minutes. © (Production of Adhesive Polarizing Plate D) An adhesive polarizing plate D was produced in the same manner as in Production Example i except that the above adhesive layer was used. (Measurement of Force) The initial adhesion of the pressure-sensitive polarizing plate D and the adhesion force after 60 ° C / 100 hours were measured in the same manner as above. As a result, the initial adhesion force was 2j (N/25 mm), and the adhesion force after 60 ° C / 100 hours was 30 (n / 25 mm) or more. Production Example 5 ® (Formation of Adhesive Layer) In the water-dispersed acrylic adhesive of Production Example 1, it was added as a cross.

" A carbonic acid diimide compound (Nissin Textiles Co., Ltd.' CARBODILITE E_04) of a binder to obtain an adhesive composition. Further, the amount of the crosslinking agent added is 1 〇 weight 〇/〇β in the solid content of the water-dispersible acrylic acid adhesive, and then the adhesive composition is made to make the thickness of the adhesive layer after drying. Applying to 3 〇μηη on one side of the release film (Mitsubishi Chemical Polyester Co., Ltd., diaf〇il MRF38 'PET film), drying at 120 ° C for 2 minutes to form a sticky 138007.doc -42 - 200941051 . Primer layer. (Production of Adhesive Polarizing Plate E) An adhesive polarizing plate E was produced in the same manner as in Production Example 1 except that the above adhesive layer was used. (Measurement of Force) "The initial adhesion force of the pressure-sensitive polarizing plate E and the adhesion force after 60 ° C / 100 hours were measured in the same manner as above. As a result, the initial adhesion force was 2 6 (N/25 mm) '60 ° C / 100 hours and the adhesion was 30 (N / 25 mm) or more. β Examples 1 to 12, Comparative Examples 1 to 3 A tacky polarizing plate was cut into a width of 25 mm to obtain a sample, and a sample of 2 kg was used for the sample on a glass substrate (Corning's Corning #1737). After crimping, it was attached to a glass substrate, and then placed in a 5 (rc, 5 atmosphere autoclave for 15 minutes, and then placed in an environment of 6 ° C, a relative humidity of 30% for 100 hours, after which After cooling to Naiyi, the exposure treatment was carried out under the conditions disclosed in Table 1, and the mixture was cooled to a temperature. After the ginseng, the tensile tester was used, and the peeling angle was 18 〇. The peeling speed was 300 mm/rnin. The conditions were peeled off from the glass substrate, and the adhesion force (N/25 mm) at the time of the detachment was measured. Comparative Examples 4 and 5 The splicers were respectively measured in the same manner as described above except that the adhesive polarizing plate (4) was used. Force (N/25 mm). Examples 13 and 14 In addition to the use of the adhesive polarizing plate C, the splicing force (N/25 mm) was measured in the same manner as above. 138007.doc -43- 200941051 Example 15,16 Except that the adhesive polarizer D is used, it is measured separately in the same manner as above. Then force (N / 25 mm). Example 1 except for using 7,1 8 adhesive-type polarizing plate E, measured in the manner as described above are the same as the adhesive force (N / 25 mm). [Table 1]

Conditions of exposure treatment Next force (N/25 mm) Temperature (°C) Relative humidity (%) Time (h) Example 1 40 80 40 3.3 Example 2 40 92 40 8.5 Example 3 50 70 17 7.4 Example 4 50 70 40 1.7 Example 5 50 90 17 2.1 Example 6 60 70 17 1.7 Example 7 60 90 17 1.5 Example 8 70 70 17 1.6 Example 9 80 80 4 1.2 Example 10 80 80 8 1.1 Example 11 80 90 8 0.8 Example 12 85 85 4 0.9 Example 13 40 92 17 0.7 Example 14 60 90 40 0.8 Example 15 40 92 17 0.7 Example 16 60 90 40 0.8 Example 17 40 92 17 0.6 Example 18 60 90 40 0.8 Comparative Example 1 30 80 40 14.7 Comparative Example 2 30 90 40 11.5 Comparative Example 3 40 70 40 10.8 Comparative Example 4 40 92 40 19.5 Comparative Example 5 60 90 40 26.8 138007.doc -44-

Claims (1)

200941051 VII. Patent application scope: 1' kind of adhesive film peeling method, which is characterized by peeling adhesive optical lens on glass substrate with optical film attached with adhesive optical film on glass substrate, its characteristics The adhesive layer of the adhesive optical film is formed of a water-dispersible adhesive, and the peeling method exposes the glass substrate with the optical film to a temperature of 40 C or more and a relative humidity of 8 Å/. After the above or the temperature is 5 〇〇 c or more and the relative humidity is 70% or more, the adhesive optical film is peeled off from the glass substrate. 2. The method of peeling an adhesive optical cartridge according to claim 1, wherein the adhesive optical film has a tackifying layer between the optical film and the adhesive layer. An adhesive type optical film for use in a method of peeling an adhesive type optical film according to claim 1 or 2, comprising an adhesive layer formed of a water-dispersible adhesive on at least one side of the optical film The adhesive optical film is attached to a glass substrate, and after exposure for 1 hour in an environment of a temperature of 60 C and a relative humidity of 30%, the adhesive force is 20 N/25 mm. Above the width, exposed to a temperature of 40. (: Above and the relative humidity is 80% or more, or the temperature is 5〇〇c or more and the relative humidity is 70% or more, the adhesion force is 10 N/25 mm or less. 138007.doc 200941051 IV. The designated representative: (1) The representative representative of the case is: (none) (2) The symbol of the symbol of the representative figure is simple: 5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: (none) 138007 .doc