TW200947051A - Manufacture method of image display devices - Google Patents

Abstract

The present invention illustrates a manufacture method of image display devices, which laminate a polarized plate made of polyester membrane as polarizer to the optical display unit, such as LCD unit. The manufacture method of image display devices comprises the following steps in order: transporting the polarized plate, which temporarily attached to the tensile releasing membrane, to a position opposite to the optical display unit; a first attaching step, which is to detach one end of the polarized plate from the releasing membrane and to attach at least one detached portion to the surface of the optical display unit; and a second attaching step, which is to detach the remained portion of the polarized plate from the releasing membrane while attaching the rest of the polarized plate to the optical display unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an image display device in which a polarizing plate is bonded to at least one main surface of an optical display unit. More particularly, the present invention relates to a method of manufacturing a liquid crystal panel in which a polarizing plate is bonded to at least one surface of a liquid crystal cell. [Prior Art] In general, a liquid crystal display device is formed by combining a liquid crystal cell as an optical display unit, a light source device such as a backlight unit, or a driving circuit, etc., and an image forming method is indispensable for A polarizing plate is disposed on the glass substrate on which the surface of the liquid crystal cell is formed. As a method for producing such a liquid crystal panel, a method of cutting a polarizing plate of a predetermined size and bonding it to a liquid crystal cell using an adhesive or the like has been widely used, from the viewpoint of improving yield or reducing cost, etc. The transfer of the polarizing plate to the liquid is performed by a method in which the polarizing plate is bonded to the liquid crystal cell by using a suction mechanism, and the polarizing plate is bonded to the liquid crystal cell by using a roller. For example, Patent Document 1 is used. Polarizer, usually used

136641 .doc 200947051 Protective film (for example, refer to Patent Documents 2 and 3). The polyethylene terephthalate film is inexpensive and excellent in mechanical strength or moisture resistance. Therefore, the use of the bismuth ethane vinegar film as a polarizing element protective film can be used to produce a bismuth-quality polarizing plate at a low cost. Therefore, the industry is investigating its application in a polarizing element protective film. Patent Document 1: Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. On the other hand, a polarizing plate using a polyester film such as polyethylene terephthalate as a polarizing element protective film tends to be easily bent (curled). Therefore, in the method of manufacturing an image display device of the prior art, it is difficult to adhere the polarizing plate to the optical display unit such as a liquid crystal cell with high precision. φ From the above viewpoints, an object of the present invention is to provide a method of manufacturing an image display device which can accurately bond a curved polarizing plate to an optical display unit such as a liquid crystal cell. Means for Solving the Problem The above-described problem can be solved by temporarily attaching a polarizing plate to a position corresponding to an optical display unit while temporarily attaching it to a release film as a transport sheet to which tension is applied. The polarizing plate is bonded to the optical display unit while suppressing the deformation in a state where tension is applied through the release film. 136641.doc 200947051 That is, the invention relates to a method for manufacturing an image display device, which is characterized in that a polarizing plate having at least one polyester film laminated on 70 pieces of polarized light is attached to an optical display unit via an adhesive layer. surface. The manufacturing method of the present invention includes, in order, a transporting step of transporting a polarizing plate temporarily attached to a release film having tension to a position facing the optical display unit; and a first bonding step of the polarizing plate One end portion is peeled off from the release film, and at least a part of the portion of the polarizing plate peeled off from the release film is bonded to the surface of the optical display; and the second pasting step is performed on the polarizing plate. In the pasting step, the remaining portion temporarily attached to the release film peels off the release film, and the remaining portion of the polarizing plate is attached to the optical display unit. According to an embodiment of the present invention, the release film and the polarizing plate are temporarily attached via an adhesive layer, and an adhesive layer can be used as an adhesive layer for bonding the polarizing plate to the optical display unit. According to still another embodiment of the present invention, in the transferring step, the cutting step further includes a cutting step of temporarily attaching the laminated optical product of the release film and the polarizing plate, and retaining the release film to deposit the optical layer. The member is cut to a specific size. In one aspect of the cutting step, the reel material obtained by winding the long laminated optical product with the release film and the polarizing plate attached to the temporary sealing film can cut the laminated optical product into a specific one. size. In the embodiment of the manufacturing method of the present invention, the polarizing plate is preferably formed on the main surface of the film which is opposite to the polarizing element and has an easy connection. 136641.doc 200947051 Effect of the Invention According to the invention In the state in which the polarizing plate is temporarily attached to the release film as the transport sheet to which the tension is applied, the polarizing plate is transported toward the position facing the optical display unit, so that the tension can be applied to the polarizing plate. The polarizing plate is attached to the optical display unit while suppressing its bending. Therefore, even if the polarizing plate is easily bent like a polarizing plate using a polyester film as a polarizing element protective film, it can be attached to the optical display unit with high precision.

Further, before the transfer step, the release film is temporarily held by the laminated optical product to which the release film and the polarizing plate are temporarily attached, and the other member of the laminated optical product is cut into a specific size, and a series of steps can be performed. Since the cutting from the polarizing plate is performed to the bonding to the optical display unit, the number of steps can be reduced and the yield can be expected to be improved. [Embodiment] The present invention relates to a method of manufacturing an image display device, and more particularly to a method of bonding an optical display unit to a polarizing plate. First, a preferred embodiment of the polarizing plate and the optical display unit used in the manufacturing method of the present invention will be described. <Polarizing Plate> The laminated form of the polarizing plate used in the production method of the present invention is exemplified in (4). The polarizing plate is laminated with at least a total of the polarizing element p. [Polyester film] The material for forming a polyester film The polyester film E is used as a protective film for a polarizing element. 136641.doc 200947051 is not particularly limited, and for example, terephthalic acid, metaphthalic acid, phthalic acid, '-naphthalene di-acid, 2,6-naphthalene di-f-acid, I,4-naphthalene dicarboxylic acid, 1,5-naphthalene dicarboxylic acid, —benzoic acid, diphenoxyethane di-f acid, diphenyl hard acid, 苜_ , , _ m —carboxylic acid, 13- Cyclopentane dicarboxylic acid, 1,3- private hexyl 1 formic acid, I 4 - r» V·»· Bu, succinated dicarboxylic acid, hexamethylene terephthalic acid, hexahydroisophthalic acid, C二酴__田蚊工_ k, monomethylmalonic acid, succinic acid, 3,3_diethyl succinic acid, glutaric acid, - 2,2-methylglutaric acid, hexane Acid, 2-methyladipate, = trial; 3 _ - hexamethylene monophosphate, pimelic acid, sebacic acid, dimer acid, bismuth octanoic acid, dodecane dicarboxylic acid, etc. Acid, and ethylene glycol, propanol, neopentyl glycol, 1,2-cyclohexane dimethanol, i,4-cyclohexanedimethanol, decanediol, u-propylene glycol, ... butanediol, One of each of the diols such as pentanediol 1,6-hexanol, 2,2-bis(4-hydroxyphenyl)propane, and bis(4-hydroxyphenyl)sulfone a homopolymer obtained by polycondensation, or a copolymer obtained by polycondensing one or more kinds of dicarboxylic acid with two or more kinds of diols, or a mixture of two or more kinds of dicarboxylic acids and diols of more than one kind The copolymer obtained by condensation and the resin of any one of the blended resins obtained by blending two or more of these homopolymers or copolymers. Among them, it is preferred to use a polyethylene terephthalate resin. The polyester film can be obtained, for example, by melt-extruding the above-mentioned polyester resin into a film form, and forming a film by cooling and solidifying using a washing drum. As the polyester film E', any of an unstretched film and a stretched film can be used. For example, in the case where the birefringence is required to be small, an unstretched film can be suitably used. Further, when birefringence is used for the optical compensation of a liquid crystal display device or the like, a stretched film can be suitably used. Further, the stretch film, especially the biaxial stretching 136641.doc • 10-200947051 The film may be suitably used in terms of strength. The polyacetate film E is a genus of Yan (4), and its extension method is particularly limited, and a longitudinal uniaxial stretching method, a transverse uniaxial stretching method, a vertical and horizontal sequential biaxial stretching method, a vertical and horizontal simultaneous biaxial stretching method, and the like can be employed. As an extension mechanism, • use any suitable extension machine such as (4) (4), tenter extension machine, zooming ceremony or linear motor type • biaxial extension machine. The thickness of the above-mentioned polyester film E is preferably 5 to 5 Å μm, more preferably 5 to (4)' and further preferably 10 to 150 Å. When the thickness is less than the above range, 罾# is likely to be broken when the film is easily broken, a problem occurs in strength when applied to a polarizing plate, or moisture barrier properties are insufficient, resulting in poor durability of the polarizing element. If the thickness is larger than the above range, there is a case where the film lacks flexibility to cause a decrease in the workability, or the polyester film itself becomes difficult to manufacture. [Easy adhesive layer] From the viewpoint of improving the adhesion to the polarizing element, the polyester film 较好 is preferably formed on the side of the side opposite to the polarizing element ,. Examples of the easily-adhesive layer include a hydrophilic cellulose derivative, a polyvinyl alcohol-based compound, a hydrophilic poly-S-based compound, a polyethylene-based compound, a (fluorenyl)acrylic compound, and an epoxy resin. A secret lipid, a polyamino phthalate compound, a natural polymer compound, and the like. Examples of the hydrophilic cellulose derivative include mercaptocellulose, carboxymethylcellulose, and hydroxycellulose. Examples of the polyvinyl alcohol-based compound include polyvinyl alcohol, vinyl acetate-vinyl alcohol copolymer, polyvinyl acetate, polyvinyl acetal, polyethylene methyl phthalate, and polyethylene benzylidene. In particular, in view of the adhesion to the polyester film 136641.doc -11 - 200947051, it is preferable to formulate a parent-linking agent. A preferred crosslinking agent will be described later. The hydrophilic polyester compound 'is sulfonated polyethylene terephthalate S or the like. Examples of the polyethylene-based compound include poly-N-vinylpyrrolidone, polypropylene decylamine, polyvinylimidazole, and polyvinylpyrazole. Examples of the (meth)acrylic compound include acrylic acid, acrylic acid slow-base alkyl ester, alkyl acrylate, hydroxyalkyl acrylate, hydroxyalkyl acrylate, methacrylic acid, carboxyalkyl methacrylate, and the like. Alkyl methacrylate, hydroxyalkyl methacrylate, hydroxyalkyl methacrylate, and the like. Examples of the epoxy resin include a bisphenol epoxy resin, a novolac epoxy resin, and an aromatic epoxy resin of an epoxidized polyethylene benzene material, and an aromatic: epoxy resin halide "cyclohexane ring" Oxygen resin, cyclohexyl methyl ether, epoxide resin, etc. alicyclic epoxy resin type polyepoxy condensed glycerin bond polyether 7L alcohol glycidol, polyether polyol glycidol mystery, etc. Oxygen resin. Examples of the polyamino phthalate compound include polyhydric alcohols such as acrylic polyols, poly-l-alcohols, and poly-polyols, and tetramethylene diiso-succinic acid, oxime isophorone diisocyanate, and the like. A reaction product of polyisocyanuric acid or the like. Among them, from the viewpoint of adhesion to a polyhedral mold, a polyacetic acid polyamic acid phthalate is suitably used. Examples of the natural N molecule compound include gelatin, casein, gum, and the like. 136641.doc 200947051 In the above, from the viewpoint of adhesion, a polyethylene glycol derivative or a polyaminophthalate compound can be suitably used.

Further, when the above-mentioned easy-adhesion layer is used, a crosslinking agent may be contained. In particular, when the adhesion layer is mainly such that a polyethylene (polyvinyl alcohol-based compound) or a polyethylene-based compound is usually lower in adhesion (adhesion) to the polyester film, the easy-to-attach layer H preferably contains Crosslinker. Examples of the crosslinking agent include a crosslinking agent such as a styrene-based system, a styrene-based compound, an epoxy-based compound, a phenoxy group, a phenoxy ester-based compound, a melamine-based compound, and a urethane-based compound. . Among them, a crosslinking agent having a oxazoline group, a diimine group, a fluorenyl group or an epoxy group can be suitably used from the viewpoint of enhancing the adhesion between the vinegar and the easy-adhesion layer. The ruthenium layer is preferably formed by dissolving the above compound into a solution, dispersing the emulsion, and applying it to the film. Coatings, in terms of preventing environmental pollution and obtaining explosion-proof properties, it is better to make water-based coatings = use ° and 'self-promoting aqueous coating liquids to wet the poly-S film. From the perspective of sex, you can also deploy interface active tablets! The appropriate amount of the surfactant to be added to the coating liquid varies depending on the kind of the surfactant, and the amount can be appropriately adjusted so that the layer and the polarizing element have sufficient adhesion. For example, the solid content of the aqueous coating liquid η Λ壬 θ , and the weight of the knife 1 ’ 1 may contain about 1 to 10 parts of the interface active agent. The surfactant may be any of anionic, cationic or nonionic, such as polyoxyethylene-fatty acid vinegar, sorbitan fatty acid ester, fatty acid glyceride, fatty acid metal hydrazine, alkyl sulfate, alkane. The base sulfonate and the alkyl group are succinct-like, such as J-S salt, quaternary ammonium chloride, alkylamine hydrochloric acid, 136641.doc -13-200947051 beet test surfactant. Further, an antistatic agent, a colorant, an ultraviolet absorber, a crosslinking agent, a pigment, an organic filler, or an inorganic filler may be further added to the coating liquid. The solid content concentration of the coating liquid is usually 20% by weight or less, preferably 1 to 10% by weight. When the solid content concentration is too small, the coating property to the polyester film may be insufficient. When the solid content concentration is too large, the stability of the coating liquid, the uniformity of the coating layer, and the appearance may be deteriorated. The application of the aqueous coating liquid to the polyester film can be carried out at any stage. In the case where the polyester film is an unstretched film, it may be applied at any stage after the film formation. Further, in the case where the polyester film is a stretched film, it may be applied at any stage before, after, or during the stretching after the film formation. The application of the coating during the stretching means, for example, the case where the coating is carried out before the lateral stretching after the film is longitudinally stretched by the longitudinal and transverse directions. In particular, 'when extending with a tenter stretching machine, a zooming ceremony or a linear motor type biaxial stretching machine, it is not necessary to bring the film into contact with the roll during the stretching step', so by applying the coating liquid just before the extension , a step can be performed to carry out the stretching and drying of the coating liquid, so that it is a preferable composition. When the coating liquid is applied onto the polyester film, it is considered from the viewpoint of improving the coating property. The surface of the film may be subjected to corona treatment, plasma treatment, or the like in advance. The coating amount of the coating liquid is preferably adjusted so that the thick sound of the easy-adhesive layer is about 〇·〇〇Η〇μιη, more preferably about 0 001 to 5 μιη, and particularly cum~i is called left and right. If the thickness of the coating layer is too small, the adhesion to the polarizing element may be insufficient. If the thickness is too large, there may be a case where the station 136641.doc 200947051 is generated or the haze is increased. As a coating method, it is possible to use any of the eight soil J applications & For example, a roll coating method, a gravure printing method, a filial brushing method, a spray coating method, an air knife coating method, an impregnation method, and a curtain coating method can be provided. It can be used in combination as early as possible. The coating applied to the polyester film is dried by heating or the like, and is formed on the film as an easy-adhesion layer. [Polarizing element]

The term "polarizing element" means a film that converts natural light or polarized light into any polarized light. As the present invention, any suitable polarizing element can be employed. It is preferable to use a person who converts the light or the polarized light into a linear polarized light. In the polarizing plate used in the present invention, as the polarizing element p, any suitable one may be employed depending on the purpose. For example, iodine or a dichroic dye is adsorbed on a hydrophilic polymer film such as a polyvinyl alcohol-based chess, a partially formalized polyvinyl alcohol-based film, or an ethylene-vinyl acetate copolymer-based saponified film. A monochromatic substance obtained by uniaxial stretching; and a polyene-based alignment film such as a dehydrated material of polyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride. Further, a bismuth-type polarizing element of a guest-host type obtained by aligning a liquid crystal composition containing a dichroic substance and a liquid crystal compound in a fixed direction, as disclosed in U.S. Patent No. 5,523,863, and the like, and U.S. Patent No. 6,049,428, etc. The E-type polarizing element or the like obtained by aligning the lyotropic liquid crystal in a fixed direction as disclosed therein. In the above polarizing element, from the viewpoint of having a high degree of polarization and the adhesion to the film, it is preferable to use a polarizing element formed of a film of iodine-containing polyethylene 136641.doc -15-200947051. . As a material of the polyvinyl alcohol film applied to the polarizing element, polyvinyl alcohol or a derivative thereof is used. Examples of the polyvinyl alcohol derivative include polyethylene furfural and polyvinyl acetal, and examples thereof include an olefin such as ethylene or propylene, and an unsaturated carboxylic acid such as acrylic acid, methacrylic acid or crotonic acid. Or an alkyl ester thereof, and a modification obtained by acrylamide or the like. Usually, the polymerization degree of polyvinyl alcohol is about 1000 to 10,000, and the degree of saponification is about 80 to 1 〇〇 mol%. [Adhesive Layer] The polyester film E and the polarizing element P are preferably laminated via an adhesive layer. At this time, it is desirable to laminate the two layers with an air gap without an air gap. Further, when the polyester film E has an easy-adhesion layer on a main surface, it is preferably as shown in Figs. 1(a) to (c) such that the easy-adhesion layer forming surface faces the polarizing element Ρ The method is laminated via the adhesive layer G. The subsequent agent layer g is formed of a subsequent agent. The kind of the adhesive is not particularly limited, and various adhesives can be used. [Laminate Form of Polarizing Plate] In the above polarizing plate, the polyester film is laminated on at least one main surface of the polarizing element. As such an embodiment, for example, the shape of the phantom is shown in the following. The configuration of the phantom is described in detail below. [Layered form a] FIG. 1(a) shows the two main surfaces of the polarizing element ρ. The upper laminate has a form of a polyester film ε. In this embodiment, as shown in Fig. 1(a), an easy adhesion layer H is formed on both polyester films E. Further, a layer is laminated on the polarizing element P. The polyester film E on one of the main surfaces may be the same as the polyester film E laminated on the other main surface. 136641.doc -16- 200947051, or different. (Lamination of polarizing element and polyester film) " From the viewpoint of efficiency, the laminated vehicle of the polarizing element P and the polyester film E, as shown in Fig. 1(a), the two polyester films E are laminated with the polarizing element P via the adhesive layer G '[Layered form b] Figure (b) shows a layer of polyester film e deposited on one of the major surfaces of the polarizing element p, and

The other part of the polarizing element

A transparent film T other than polyacetal is laminated on the surface as a protective film. (Transparent film) The transparent film τ other than the vinegar is not particularly limited, and any material can be used as the material of the transparent film. For example, transparency, mechanical strength, thermal stability, moisture barrier property, and isotropic property can be used. As a specific example of such a thermoplastic resin, a thermoplastic resin such as triacetin, a polyester resin, a (four) (four) resin, a polyhard resin, or a polycarbonate resin may be mentioned. Polyammonium resin, polyamidene tree sulphate polysaturated resin, (meth) propylene glycol resin, cyclic smoky resin (norbornene resin), polyarylate resin, Polystyrene (tetra) resin, polyvinyl alcohol resin, and mixtures thereof. Further, as the transparent film T, a thermosetting resin such as a (meth)acrylic acid, an amino carboxylic acid vinegar, an acrylamide-based f fed system, a % oxygen system or a ruthenium oxide type, or an ultraviolet curing type may be used. Resin. Further, as the transparent crucible T, a polymer film described in Japanese Patent Publication No. 2-343529 (wool/37007), for example, contains (1) a side chain 136641.doc 17 200947051 having a substitution and/or An unsubstituted quinone imine-based thermoplastic resin, and (II) a resin composition having a substituted and/or unsubstituted phenyl and nitrile-based thermoplastic resin in a side chain. Specific examples thereof include a film containing a resin composition comprising an alternating copolymer of isobutylene and N-fluorenylmethyleneimine and an acrylonitrile-styrene copolymer. As the film, a film formed of a mixed extrusion of a resin composition or the like can be used. Since the film has a small phase difference and a small photoelastic coefficient, it is possible to eliminate the unevenness caused by the strain of the polarizing plate. Further, since the film has a small moisture permeability, it is excellent in humidifying durability.

The thickness of the transparent film T can be appropriately determined, and as in the case of the above polyester film, it is preferably 5 to 500 μϊη, more preferably 5 to 2 μηηι, and even more preferably 10 to 15 0 μηι 〇. As the transparent film, any one of those having a small difference in birefringence and capable of exhibiting a phase difference plate can be used. When the function of the phase difference plate is used as a transparent film, as the south molecular material, for example, #乙醇醇, polyvinyl butyl aldehyde, polymethyl vinyl ether, polyacrylic acid hydroxyacetic acid, Hydroxyethyl cellulose: hydroxypropyl cellulose, methyl cellulose, polycarbonate, polyaryl phthalate, polyethylene terephthalate, polyethylene naphthalate, sulfone, polybenzene Thioether, polyphenylene ether, polyallyl hydrazine, polyamine, polyfluorene 3, poly (hydrocarbon), polyvinyl chloride, cellulose resin, ring-shaped smoky tree, olefinic resin) or these Various binary, ternary copolymers, graft copolymers, blends, and the like. These polymer materials are formed into an alignment product (stretched film) by stretching or the like. 13664J.doc -38- 200947051 The laminate of the optical element P and the tg film E is preferably carried out via the adhesive layer G as described above. Further, the laminate of the polarizing element p and the transparent film τ is also preferably formed via the adhesive layer G. [Laminated Form c] Fig. Uc) is a form in which a polyester film e is laminated on one main surface of the polarizing element p, and a film is not laminated on the other main surface. In such a form, the laminate of the polarizing element P 〃 and the t 曰 film E is preferably carried out via the adhesive layer 如上 as described above. [Other Optical Layers] (Formation of Surface Treatment Layer) When at least i of the polyacetal film E and the polarizing element p are laminated in the polarizing plate used in the production method of the present invention, the form is not limited to the above laminated form (4). Any of the optical layers listed in ~(4) can be added. As such an optical layer, for example, a hard coat layer or an anti-reflection treatment may be applied to the main surface of the unstacked polarizing element P of the polyester film E&/or the transparent film, and anti-sticking, diffusion or anti-glare may be applied. For the purpose of the processor. In addition, examples of the optical layer which can be applied to the polarizing plate include a brightness enhancement mode, a reflection layer phase difference plate, and the like. [Lamination of optical layer] A material layer such as a brightness enhancement film, a reflection layer, or a phase difference plate can be formed by sequentially laminating in the process of manufacturing an image display device, and the pre-layered person has quality stability or assembly. Excellent workability and the like, and the advantages of the manufacturing steps can be improved. An appropriate bonding mechanism such as an adhesive layer can be used for lamination. In the laminates, the optical axes of the optical layers (the slow axis of the retardation film, or the polarization 136641.doc •19-200947051, etc., which form the absorption axis of the suitable component, etc.) can be arranged according to the phase of the target phase. . (Adhesive layer) Further, it is preferable that an adhesive layer is provided in advance on the main surface of the polarizing plate to fit the optical display unit. The adhesive for forming the adhesive layer is not particularly limited, and for example, a propionic acid-based polymer, a fluorinated polymer, a polyester, a polyamino phthalate, a polyamine, an ether, or the like can be appropriately selected and used. A polymer such as a fluorine-based or rubber-based polymer is used as the base polymer I. It is excellent in optical transparency such as an acrylic adhesive, and exhibits excellent wettability, cohesiveness, and adhesion properties, and is excellent in weather resistance and heat resistance. (Release film) For the exposure s of the adhesive layer, the release film (spacer) is temporarily attached and covered to prevent contamination or the like until it is provided for practical use. Thereby, it is possible to prevent contact with the adhesive layer in a normal operation state. As the release film, for example, a plastic film, a rubber sheet, a paper, a cloth, a non-woven fabric, a meshed "foamed sheet or a metal sheet #", and a suitable sheet such as the laminate may be used as needed. A suitable one of the oxygen-based or long-chain hydrocarbon-based, gas-based, or molybdenum-based molybdenum is applied as it is before. In addition, the release film may be temporarily attached to prevent the exposed surface of the adhesive layer from being contaminated, etc., until the polarizing plate is applied to the optical display unit such as the liquid crystal cell 70, which is applied to the actual application. A transfer sheet 136641.doc -20-200947051 for transporting the polarizing plate to a position facing the optical display unit, which will be described later. In this case, the release film is preferably one which does not elongate or elongate even if tension is applied, i.e., is formed of a material having a large tensile modulus. The release film which is such a sheet for conveyance can be preferably used, and examples thereof include a metal sheet, a polyimide film, and a polyethylene terephthalate film. <Optical display unit>

Examples of the optical display unit used in the production method of the present invention include a glass substrate unit of a liquid crystal cell, an organic EL emitter unit, and the like. In the case where the optical display unit is a liquid crystal cell, for example, TN (Twisted Nematic) type or STN (Super Twisted) can be used.

Any type of Nematic, super twisted nematic, scorpion, etc. In the liquid crystal display device, it is indispensable to arrange a polarizing plate on the glass substrate unit of the liquid crystal cell in view of the image forming method. The polarizing plate using the polyacetal film as the polarizing element protective film may be provided on one side or both sides of the glass substrate unit of the liquid crystal cell. When the above polarizing plates are disposed on both sides, the polarizing plates such as the shaws may be the same or different. In the case where the optical display unit is an organic anal light-emitting unit, as the organic light-emitting layer, a product of various organic thin films can be applied. (IV) For example, a configuration having various combinations of the following is known: a hole cloth containing a triphenylamine derivative or the like a laminate, a laminate comprising a light-emitting layer comprising a fluorescent organic solid such as ruthenium, a product of the light-emitting layer and an electronic cloth (4) containing a garden derivative, and the like, a layer of the hole, a light-emitting layer, and A laminate of an electronic implant layer or the like. In the organic EL display device having the above configuration, the organic light-emitting layer is formed by an extremely thin film having a thickness of about 10 nm; Therefore, the organic light-emitting layer can transmit light substantially completely similarly to the transparent electrode of 136641.doc 21 200947051. As a result, when the light is not emitted, the light is incident from the surface of the transparent substrate, and the light transmitted through the transparent electrode and the organic light-emitting layer and reflected by the metal electrode is again emitted to the surface side of the transparent substrate. Therefore, the organic EL display device is visually viewed from the outside. The display surface looks like a mirror. Since the phase difference plate and the polarizing plate have a function of polarizing light which is incident from the outside and reflected by the metal electrode, there is an effect that the mirror surface of the metal electrode cannot be visually observed from the outside by the polarizing action. In particular, when the retardation plate is formed of a quarter-wave plate and the angle formed by the polarization directions of the polarizing plate and the phase difference plate is adjusted to π/4 (90 Å), the mirror surface of the metal electrode can be completely shielded. That is, it is incident on the external light of the organic EL display device, and the component of the linearly polarized light is transmitted through the polarizing plate. The linearly polarized light is usually rounded off by the phase difference plate, and the angle is 1/4 of the phase difference plate. The angle formed by the polarization direction of the opaque plate and the phase difference plate is π/4 (9 〇. ), it will become a circular polarized light. The circularly polarized light is transmitted through the transparent substrate, the transparent electrode, and the organic thin film, and is reflected by the metal electrode, transmitted again through the organic thin film, the transparent electrode, and the transparent substrate, and is again linearly polarized by the phase difference plate. Further, since the linear polarization and the polarization directions of the polarizing plates are orthogonal to each other, they cannot be transmitted through the polarizing plate. As a result, the mirror surface of the metal electrode can be completely shielded. By using the above-mentioned polarizing plate in which, for example, a quarter-wave plate is laminated as an optical compensation layer in order to obtain the circularly polarized light, reflection of external light can be suppressed, and an organic EL display device having high outdoor visibility can be obtained. Further, similarly to the above-described liquid crystal display device 136641.doc -22-200947051, the organic pull display device is also excellent in terms of excellent scratch resistance. When the above polarizing plate is used in such an organic display device, a polyester film can be used as an optical compensation layer, that is, a quarter-wave plate, and a polyester film can be used only as a polarizing element protective film. Any of the components. [Formation of Image Display Device] As shown in FIG. 2, the image display device 100 is formed by bonding the polarizing plate u to the surface of the optical display unit w via an adhesive layer. In the case of the image display device, a method is employed in which a polarizing plate of a predetermined size is cut into a size of an optical display unit to be bonded, such as a liquid sa unit or an organic EL illuminator unit, and the release film is peeled off. The adhesive layer is exposed and then attached to the optical display unit in a facing manner. When forming an image display device such as a liquid crystal display device or an organic BL display device, the surface of the polarizing element #P1 and the other main surface are laminated as shown in the above-mentioned laminated form b (shown). When the film is not the same, or as shown in the laminated form c (Fig. i(c)), only one of the polarizing elements p is formed by a film having a film of the main layer _L, and the polylayer film is present in the layer. The main surface on the side of E and the other main surface have different stresses imparted to the film interface of the polarizing element p. Further, in the form in which the polyester film is laminated on both main surfaces of the polarized light piece P as shown in the laminated form a (Fig. 1 (a)), there are also many cases in which the polarizing element is present. The main surface of the opposite side of the optical display unit and the main surface of the opposite side are different in optical characteristics. Therefore, the thickness or the stretching ratio is different, resulting in the surface of the polarizing element - main 136641.doc • 23- 200947051 A main surface 'has a different stress to the film interface of the polarizing element p. That is, 'in the polarizing plate using the polyester film as the protective film of the polarizing element', there is a case where the external stress imparted to the polarizing element is different on the back side of the film due to the difference in the layer structure of the front side of the polarizing element P. . Due to the difference in external stress, the film is easily bendable. In the prior art, it is difficult to adhere the polarizing plate which is easily bent (curled) to the optical display unit with high precision. In view of the above, the present invention performs the transport step, the first pasting step, and the second pasting step in sequence. And the polarizing plate u is bonded to the optical display unit w. Hereinafter, each step will be described. [Transfer step] The transfer step is temporarily attached to the polarizing plate 11 to which the tension release film 12 is applied, as shown in the mode of Fig. 3 (a), and is transported to the optical '. W is relatively opposite. By using the release film 2 as a conveyance sheet, the polarizing plate can be conveyed to the vicinity of the optical display unit while the bending behavior of the polarizing plate is suppressed by the conveyance of the release film. Furthermore, the term "opposing the polarizing plate and the optical display unit" means not only the state in which the main surfaces of the two are parallel and facing each other, but also as shown in Fig. 3(a). The face is enough. In the case of the film 12 for transporting the sheet, the release film which is temporarily attached to prevent the exposed surface of the adhesive layer from being contaminated or the like is also used as it is. As a material which can be suitably used as such a mold release film, it is preferable to use a material which has a large tensile modulus and a large elongation even when the tension is applied as long as the tension is applied as described above. Metal sheet, polyimide film, polyparaphenylene 136643.doc -24- 200947051 ethylene formate and the like. The thickness of the release film as the conveyance sheet is preferably ι〇μιη to 100 μχη, more preferably 25 μηι~ from the viewpoint of temporary adhesion to the polarizing plate or transportability or economy. 50 μηι. The mechanism for temporarily attaching the polarizing plate to the release film as the transfer sheet # is not particularly limited, and for example, an adhesive, an adhesive tape, a water-based temporary adhesive or the like can be used. Among them, it is preferred to use an adhesive layer as a temporary attaching means, and to use the adhesive layer as an adhesive layer for bonding a polarizing plate and an optical display unit in the second and second pasting steps described later. In view of the above, it is preferred that the adhesive layer as the temporary attaching means is designed such that the adhesive layer remains on the side of the polarizing plate when the polarizing plate is peeled off from the release film. From this point of view, the side of the release film which is temporarily attached to the side of the polarizing plate is preferably coated with a suitable release agent such as a halogen-based or long-chain alkane-based, fluorine-based or molybdenum sulfide. As for the tension for conveying the release film 12, for example, in the case of a long sheet, the tension can be controlled by controlling the winding device for winding the long release film. Further, various known tension control devices can be used. The tension applied to the release film as the conveying sheet is preferably adjusted in accordance with the ease of bending of the polarizing plate or the thickness of the release film. For example, when a polyethylene terephthalate film is used as a release film, the relationship between the thickness d of the release film and the lower limit of the tension ρ per unit width of the release film is as shown in Table 1. . As can be seen from Table 1, when the product dF2 of the square of d and f is about 2.5 x 1 〇 - i N2 / m or more, the polarizing plate can be prevented from being bent while being conveyed. On the other hand, 'the tensile force F per unit width of the release film is preferably 1000 N/ from the viewpoint of preventing the elongation of the release film from being broken, or the change in optical characteristics of the polarizing plate 136641.doc • 25- 200947051. m or less. [Table 1] Thickness of the film ά (μιη) Tension per unit width F (N/m) Stress a (MPa) dF2 (N2/m) 25 100 4.0 0.25 38 90 2.4 0.3078 50 80 1.6 0.32 75 60 0.8 0.27 ~ The method of transporting the polarizing plate 11 temporarily attached to the release film 12 to the position facing the optical display unit W is not particularly limited, and it can be manually transferred or automatically conveyed by a transfer roller or the like. In order to control the tension as described above, it is preferable to carry it by using a roller conveyor having a control mechanism. [First Adhesion Step] Following the above-described transfer step, a paste step is performed. The m-th bonding step and the second pasting step described later, the release film (1)-surface is removed from the polarizing plate u, and the polarizing plate from which the release film is removed is bonded to the polarizing plate (not shown) via an adhesive layer (not shown). The steps on the optical display unit. The affixing step is as follows: > Fig. 3 is attached to the release film 12 at the end of the polarizing plate as shown in the mode, and the polarizing plate is as shown in Fig. 3 (4) The upper portion of the self-release medium is less attached to the surface of the optical display unit W. By the above steps, when the material of the polarizing plate on the film of (4) is bonded to the optical (four) unit I, the remaining portion of the film (4) is still temporarily removed (via) the release film, and then 136641.doc. 26- 200947051 Continued tension state 'Therefore it can suppress the deflection of the polarizer β

As the peeling mechanism for peeling one end portion of the polarizing plate from the release film 12, for example, a sharp-edged knife blade can be suitably used. The release film 12 can be wound up on the knife blade and then transferred back, thereby peeling off the release film, and the polarizing plate 剥离 after peeling off the release film is sent out to the optical display unit w surface. on. At this time, the release portion can be peeled off from the end portion of the polarizing plate 11 at the same time as or immediately after the peeling off, and the peeled portion is bonded to the surface of the optical display unit W. The film is peeled off immediately after the release film, and the time until the polarizing plate = the bending which hinders the bonding is shown. By peeling one end of the polarizing plate from the release film until the portion to be bonded to the light (four) display unit: the time until the upper side is 5 seconds, and β ' is preferably within 3 seconds to suppress the bending. Improve the bonding accuracy of the polarizing plate and the optical display unit. There is no particular limitation on the method of bonding the polarizing plate η to the surface of the optical display unit. From the viewpoint of uniform bonding, it is preferable to press the polarizing plate U toward the side of the button. The optical display unit w is pressed on the surface, and the surface is bonded. The pressing light 305 can be a rubber roller or a metal roller. In addition, the pressing roller is preferably equipped in such a manner that it can be lifted and lowered, and it is better to use the polarizing plate in the upper conveying step. When transporting to the position w, the pressure roller is raised to a position away from the first unit, such as the upper surface of the optical display unit (the position of the surface of the optical display unit is more than the position of the ancient surface) to open the roller interval. The pressing pressure and the 305 pressing action are controlled by appropriate control mechanisms. [Second Adhesion Step] In the above-mentioned first pasting step _ you will enter the 2nd paste step. The second sticking step is as follows. In the following manner, the pattern is shown in Fig. 3 (4), and the surface 136641.doc • 27· 200947051 is not attached to the optical display unit w in the first pasting step and 2 is attached to the mold release. The remaining portion of the film 12 is peeled off by the remaining portion of the u, and the remaining portion of the polarizing plate is attached to the optical display unit. This step can be performed separately from the ith pasting step or continuously. In the present invention, the surface of the surface-reducing film is bonded by sequentially including the above-described carrying step, the phosphorus-paste step, and the ice-paste step, so that even a polarizing film is laminated on the polarizing element. A polarizing plate that is easy to feed, such as a plate, can be attached to the optical display unit with high precision.

The peeling method of peeling off the release film from the polarizing plate in the second pasting step is not particularly limited, and for example, the same peeling method as the above-mentioned pasting step can be employed. In addition, the following method may be employed: (4) a strip-shaped film is used as a release film, and the film is wound while being applied thereto, whereby the film is temporarily attached to the release film from the polarizing plate. The remainder of the board is attached to the optical display unit. The take-up tension of the release film at this time is preferably 80 N/m or more, more preferably 100 to 1000 N/m, with respect to the unit width of the release film. By setting the tension to this range, the adhesion accuracy of the polarizing plate to the optical display unit can be further improved. Further, in Figs. 3(a) to 3(d), the position of the optical display unit W is fixed, and the blade N and the pressing roller 3〇5 are movable. However, the present invention is not limited to this embodiment. For example, as shown in FIGS. 4(a) to 4(4), the guide roller 3〇51 disposed opposite to the pressing roller 305 may be provided, and the guide roller may be driven, whereby the optical display unit W is transported to the guide roller and The above steps are continuously performed on the one side between the pressing rolls. Further, the optical display unit W is preferably cleaned before being supplied to the first pasting step. 136641.doc -28-200947051 Further, in the manufacturing method of the present invention, it is preferred that the step further comprises a cutting step of "splicing the optical article temporarily attached with the release film and the polarizing plate before the transfer step, and retaining the The release film is used to cut the other members of the laminated optical article into a predetermined size. For example, when the release film is temporarily attached to the polarizing plate via the adhesive layer, the polarizing plate and the adhesive layer are cut into a predetermined size depending on the size of the optical display unit to retain the release film. Examples of the cutting mechanism in the cutting step include a laser device, a cutter, and other known cutting mechanisms. When the polarizing plate which is easy to be curved like a polarizing plate having a protective film of a polarizing element is cut into a predetermined size in advance, there is a case where it is difficult to bend due to bending. The tendency to make. In this case, by cutting the film so as to change the film before moving the polarizing plate to the position opposite to the optical display unit, it is possible to suppress the bending of the polarizing plate by applying tension to the release film. When the crucible is cut, the workability is excellent. Further, the present invention is preferably an optical article obtained by winding a release film and a long laminated optical product obtained by :::, an optical product, and cutting it into a predetermined size. By cutting into a predetermined size by such a material, the preparation and cutting steps can be performed on a continuous production line, and the polarizing plate and the optical display unit are attached. Therefore, as shown in FIG. 4(), the selection is not shown in (4) and (4). The polarizing plate 11 can be continuously attached: on the display unit. Further, it is not necessary to use the polarizing plate. ...operating in the early film state, it is possible to improve the polarization of the previously manufactured image display by the optical film manufacturer and the panel processing due to the four places when the production is taken. 136641.doc •29- 200947051 The fixed size is cut and attached to the optical display unit, so there is no need for the end face processing of the polarizing plate of the optical film manufacturer or the dust-free packaging, the shipping package or the unpacking of the panel processing manufacturer. Further, as an embodiment of the present invention, it is also possible to perform a flaw check step after the laminated optical product is pulled from the reel material and before the cutting, to check whether or not flaws are present in the polarizing plate or the like. In the case of the inspection step, it is preferred to remove the first release film temporarily attached to the polarizing plate before the inspection. Thereby, the plaque inspection can be performed on the polarizing plate without considering the phase difference between the foreign matter attached to the first release film 12 or the foreign matter or the mark or the like, or the phase difference in the first release film. Then, a flaw check is performed after the release film removing step.瑕疵 Inspection A well-known method can be applied, and for example, an automatic inspection device and a visual inspection by an examiner can be cited. When the release film 12 temporarily attached to the polarizing plate 11 is removed before the inspection, the polarizing plate is prevented from being bent due to the cutting, and 5 is preferably after the inspection. Another release film 22 is temporarily attached to the polarizing plate 1A. When the temporary attachment is carried out, it is preferred to carry out the foaming without generating gas bubbles or the like, which is preferable because the planarity can be maintained. As a temporary attaching method, for example, the take-up film 22 of the release film is pulled apart from the release film 22, and the pair of rolls or the pair of rolls is used to hold the release film 12 and the polarizing plate U by using a light weight to make a predetermined pressure. Play a role and fit them together. The roll speed, pressure control, and conveyance control are controlled by appropriate control mechanisms. Further, the following method may be employed: according to the position coordinates of 瑕 641 641 641 641 641 641 641 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕 瑕For skipping the cut). The portion including the crucible is removed or attached to the member of the non-optical display unit, and the polarizing plate which is cut into a predetermined size and judged to be a good product is attached to the optical display unit. By this, the yield of the optical display unit can be greatly improved, and the frequency of rework can be reduced. As described above, each step of the method of manufacturing the image display device of the present invention is described by arranging a polarizing plate on the main surface of the optical display unit: a center, but it may be used in an optical display unit. A polarizing plate is attached to both main surfaces. For example, when a liquid crystal display unit is used as an optical display unit to form a liquid crystal display device, it is preferable to apply a polarizing plate to both main surfaces of the liquid crystal cell. Hereinafter, an embodiment in which an image display device is formed by using a manufacturing method of the present invention on a main surface of an optical display unit to form an image display device will be described based on the step flow chart of FIG. 6 and the step conceptual diagram of FIG. The example of the step flow of the 10 break mode of the skip cut is explained. (1) Reel material preparation step (Fig. 6, S1) A laminated optical product 1 formed as a long strip, as shown in the reel material 201, the laminated optical product is laminated with at least one sheet- The polarizing plate 1 and the adhesive layer μ and the first release film 12 are obtained by laminating the enamel film E and the polarizing element p. With the go.. Dan's polarizing plate 11 can also include the polyester film and the optical sounds r other than the polarizing element. Further, as shown in the above-described laminated form c (Fig. 1(c)), when the deflector 11 is a structure in which only a film is laminated on one main surface of the polarizing element P, the 鲂 cup The surface of the polarizing plate 11 on the side of the polarizing element P, 136641.doc - 31 · 200947051, has an adhesive layer 14 and an i-th release film 12. The reel material is disposed on a roll holder device 301 that is rotatably coupled to a motor or the like for free rotation or at a fixed rotational speed. (2) The first release film removal step (FIG. 6, S2), and then the first imaginary release is removed while the laminated optical product i is pulled and transported by the transfer mechanism 302 from the prepared reel material 2〇1. Membrane. 12. As a method of removing the release film 12, for example, a method of continuously peeling off the peeled film on the roll 212a as shown in FIG. 7 and cutting the release film into a predetermined size unit and A method of peeling and removing it with an adhesive tape, and the like. As the peeling means, the following method may be employed: in the same manner as in the case where the release film 12 is peeled off from the polarizing plate in the first pasting step, a method of piercing and reverse transfer is performed by the sharp-edged edge N1 (see FIG. 7); Alternatively, a method of peeling off the first domain film and the polarizing plate by two rolls constituting a pair of smooth rolls may be performed. (3) The fatigue inspection step (Fig. 6, § 3) Then, after the first mold release step, the flaw check is performed. The position coordinates of the cymbal obtained by the 瑕疵 inspection mechanism 303 are supplied to the skip cutting of the ❹ cutting mechanism described later. (4) Second release film bonding step (Fig. 6, S4) - Next, after the 瑕疵 inspection step, the second release film 22 is temporarily attached to the polarizing plate 11 via the _ adhesive layer 14 . The following method can be suitably employed. As shown in Fig. 7, the second release film 22' is pulled from the reel material 222 of the second release film by a pair or a plurality of pairs of rollers to hold the second release film and The polarizing plate 'adapts the predetermined pressure by the pair of the pair to bond them. I36641.doc -32· 200947051 (5) Cutting step (Fig. 6, § 5) Then, the polarizing plate 11 and the above-mentioned adhesive layer 14 are cut into a predetermined size by using the cutting mechanism 304, but the above-mentioned 2 release film 22. The cutting mechanism 304 performs cutting in such a manner as to avoid the 瑕疵 portion based on the position coordinates of the cymbal detected in the 瑕疵 inspection step. That is, the cut product including the crotch portion is removed as a defective product in the subsequent step. Alternatively, the cutting mechanism 304 can also ignore the presence of the crucible and continuously cut into a predetermined size. In this case, it may be removed or bonded to the temporary plate unit in the transport step, the first pasting step, and the second pasting step, which will be described later, without attaching the portion to the optical display unit. (6) Transfer step and first pasting step (Fig. 6, S6, S7) Then, after the cutting step, the polarizing plate u temporarily attached to the second release film via the adhesive layer 14 is transferred to a position facing the optical display unit (S6: plate transport step), one end of the polarizing plate is peeled off from the release film, and at least a part of the portion of the polarizing plate peeled off from the release film is attached The surface of the optical display unit w is combined (s7: first bonding step). (7) After the second pasting step (Fig. 6, S8), the release film is peeled off from the remaining portion of the polarizing plate which is temporarily attached to the second release film 22 in the second adhesive step, and the release film is peeled off. The remaining portion of the polarizing plate is bonded to the optical display unit, whereby the second release film 22 can be removed, and the polarizing plate 11 from which the second release film 22 is removed can pass through the adhesive layer 14 It is attached to the optical display unit w. Therefore, even if the release film is peeled off, the polarizing plate 11 can be bonded to the optical display unit W in a state where the bending of the polarizing plate 得 136641.doc - 33 · 200947051 is suppressed. The polarizing plate bonding mechanism is bonded to the optical display unit via the adhesive layer while removing the second release film ' while removing the second release film'. As shown in Fig. 3 and Fig. 4, it is preferable that the bonding roller 305 is used for bonding, and the polarizing plate 11 is pressed against the surface of the optical display unit w to be bonded. The pressing pressure and action of the roller 3〇5 are controlled by an appropriate control mechanism. As the peeling mechanism, the following method can be suitably employed: "Using the sharp-edged cutting edge N as described above, the second release film 22 is wound around the blade and conveyed in the opposite direction (reverse transfer).剥离 The second release film is peeled off from the polarizing plate η transported from the second release film 22, and the polarizing plate 经 after the second release film is peeled off is conveyed until the leading end reaches the center of the pressing roller 305 The lower portion is thus sent out to the surface of the optical display unit W. The steps of the reel material preparation step, the cutting step, the transport step, the first bonding step, and the second bonding step are performed on a continuous production line. In one of the above series of manufacturing steps, the polarizing plate 11 is attached to one main surface of the optical display unit, but a polarizing plate or other optical film may be attached to the other main surface. Further, in the manufacturing method which does not employ the cutting method of skipping cutting, the first release film removing step, the flaw detecting step, and the second release film bonding step can be omitted. (8) Product inspection step (Fig. 6, S9) It is preferred that the product inspection step is further carried out in the continuous step. As the product inspection step, an inspection step of inspecting the bonding state and an inspection step of inspecting the bonding state can be exemplified. Product inspections may be performed only for any of them 136641.doc -34- 200947051 'but it is better to perform both inspections. (9) Installation steps (Figure 6, S10)

In the product inspection step, the optical display unit W determined to be a good product is mounted in the image display device. For example, in the case of a liquid crystal display device, a liquid crystal cell having a polarizing plate adhered to both main surfaces, that is, an appropriate layer of the i-layer or two or more layers, such as a diffusion plate or an anti-glare layer, is disposed at an appropriate position on the liquid crystal panel. k reflective film, protective plate, tantalum array, lens array sheet, light

A suitable part such as a diffusion plate or a backlight is formed and incorporated in a drive circuit. Further, when the optical display unit is judged to be a defective product, the rework processing 're-bonding the polarizing plate' (4) is inspected, and if it is determined that the product is closed, the product is described as a defective product in the mounting step 1. , then move the parent to the heavy work again or discard it. The image display device manufactured in this manner can be used in various known applications, similarly to the image display device manufactured by the prior art manufacturing method. [Examples] However, the present invention is not limited to the following examples, and the examples of the present invention described below will be described by way of examples. &lt;Manufacturing Example&gt; [Manufacture of polarizing plate] The polyethylene terephthalate film (T_1〇〇 manufactured by Mitsubishi Chemical Polyester Film) was changed from w to a thickness of 3 8 μm. After processing by the electric power company, the polyester water-dispersed bismuth phthalate adhesive (the first industrial base) was coated with a coating m ^ Qiu ° test machine with a mesh #200 gravure roll. Manufactured under the trade name "Superflex 136641.doc *35 - 200947051 SF210"), dried at 15 °C for 1 minute to form a thickness of 〇·3 μπι on the poly(p-bismuthic acid) film. The above-mentioned layer is applied to a main surface of a polarizing element (having a thickness of 28 μm) obtained by stretching a polyvinyl alcohol film and dyeing with iodine via a water-soluble adhesive containing polyvinyl alcohol as a main component. A biaxially-stretched polyethylene terephthalate film which is easy to be processed is laminated as a polarizing element protective film. On the other side of the polarizing element, a triacetate having a thickness of 40 μηη is deposited via the above water-soluble adhesive. Cellulose film (K〇nica Minolta) KC4UY), made of polarizing plate. The polarizing plate is cut into an A4-size rectangle and placed at room temperature, and the polarizing plate is biaxially stretched on the polyethylene terephthalate film side as the inner side. [Liquid Crystal Unit] A commercially available LCD TV (manufactured by Sharp, trade name "AQUOS LC-M30TV") A with a diagonal size of 30 inches, and the liquid B panel mounted. The optical film adhered to the liquid crystal panel is completely removed, and the glass unit of the liquid crystal cell to which the optical film is not adhered is prepared. <Example 1> The polarizing plate obtained in the above production example is made to have a diagonal size It is cut into 30'' type, and is temporarily attached to the target with a tension of 150 N/rn via an acrylic adhesive. The thickness is 38 μπ1 and the strip shape is biaxial I. The release film formed by the ethylene diacetate film (the layer is subjected to the oxygen release treatment) is transferred to the upper portion of the liquid crystal cell, and then as shown in FIGS. 3(a) and (b). Method, stripping one part of the above release film 136641.doc 200947051 to make the above propylene The adhesive remains on the polarizing plate and is exposed. Within 2 seconds after the release film is peeled off, the peeled portion of the polarizing plate is passed through the acrylic system as shown in FIG. 3(c). Adhesively adhered to the glass surface of the liquid crystal cell. Then, the film is wound while applying 150 tension to the strip-shaped release film, whereby the remaining portion of the temporarily attached polarizing plate is As shown in FIG. 3(d), the liquid crystal panel was produced by peeling off from the release film and adhering it to the glass surface of the liquid crystal cell via the acrylic adhesive. In the above manufacturing steps, the polarizing plate does not bend once. Further, the polarizing plate in the obtained liquid crystal panel is not offset from the liquid crystal cell, but is adhered with high precision. As described above, it is difficult to operate the polarizing plate in a single sheet in a state where the curl is generated, and by applying the continuous method of the manufacturing method of the present invention, the image display device can be manufactured regardless of whether or not curling occurs. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 (a) to (c) are schematic cross-sectional views showing a laminated form of a polarizing plate. Fig. 2 is a schematic cross-sectional view showing a laminated form of an image display device. 3(a) to 3(d) are conceptual views for explaining an embodiment of the manufacturing method of the present invention. 4(a) to 4(d) are conceptual views for explaining an embodiment of the manufacturing method of the present invention. Fig. 5 is a schematic cross-sectional view showing a laminated form of a laminated optical product. Fig. 6 is a flow chart showing an example of a manufacturing method of the present invention. 136641.doc -37- 200947051 Fig. 7 is a conceptual diagram for explaining an outline of steps of an example of the manufacturing method of the present invention. [Main component symbol description] 1 laminated optical product 11 polarizing plate 12 release film 22 release film 100 image display device 305 pressing roller E polyester film G subsequent layer Η easy adhesion layer 刀 blade 偏 polarizing element 透明 transparent film W Optical display unit 136641.doc -38-

Claims (1)

200947051 X. Patent application scope: A manufacturing method for displaying an image in which a polarizing plate of a polyester film laminated on a polarizing element is attached to an optical display unit via an adhesive layer. The surface includes, in order, the following steps: [Step λ is temporarily attached to the biasing film to which the tension is applied. The light plate is transported to a position opposite to the optical display unit; and the first pasting step is performed on one side of the polarizing plate. The end portion is peeled off from the release film and at least one part of the portion of the polarizing plate peeled off from the release film is attached to the surface of the optical display unit; and the first paste is applied to the polarizing plate. The remaining portion which is temporarily attached to the 4 release film in the first pasting step is peeled off, and the remaining portion of the polarizing plate is bonded to the optical display unit. 2. The method of manufacturing an image display device according to claim 1, wherein the release film, the polarizing plate is temporarily attached via an adhesive layer, and the adhesive layer is used as the polarizing plate The adhesive layer to which the optical display unit is attached. 3. The method of manufacturing the image display device of claim 1, wherein before the transferring step, the step further comprises a cutting step of temporarily attaching the (four) optical article to the polarizing plate and retaining the optical article The release film is used to cut the other members of the laminated optical article into specific dimensions. 4. The method of manufacturing an image display device according to claim 3, wherein the cutting step is to laminate the reel material obtained by winding a long laminated optical product temporarily attached with a release film and a polarizing plate. The optical article puller is cut to a specific size. The method of manufacturing the image display device according to claim 1 or 2, wherein the polarizing plate is formed on the main surface of the polyester film opposite to the polarizing element to form an easy-to-layer layer. 136641.doc