WO2007105378A1 - 粘着型光学フィルム及び画像表示装置 - Google Patents
粘着型光学フィルム及び画像表示装置 Download PDFInfo
- Publication number
- WO2007105378A1 WO2007105378A1 PCT/JP2007/050989 JP2007050989W WO2007105378A1 WO 2007105378 A1 WO2007105378 A1 WO 2007105378A1 JP 2007050989 W JP2007050989 W JP 2007050989W WO 2007105378 A1 WO2007105378 A1 WO 2007105378A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- water
- optical film
- film
- adhesive
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/16—Optical coatings produced by application to, or surface treatment of, optical elements having an anti-static effect, e.g. electrically conducting coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/003—Presence of (meth)acrylic polymer in the primer coating
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2843—Web or sheet containing structurally defined element or component and having an adhesive outermost layer including a primer layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2891—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
Definitions
- the present invention relates to an adhesive optical film in which an adhesive layer is laminated on at least one surface of an optical film via an anchor layer.
- the present invention also relates to an image display device such as a liquid crystal display device, an organic EL display device, and a PDP using the adhesive optical film.
- the optical film include a polarizing plate, a retardation plate, an optical compensation film, a brightness enhancement film, and a laminate of these.
- polarizing elements For a liquid crystal display or the like, it is indispensable to dispose polarizing elements on both sides of the liquid crystal cell.
- a polarizing plate having a transparent protective film on one or both sides of a polarizer is required. It is stuck.
- various optical elements are being used for liquid crystal panels in order to improve display quality of displays. For example, a retardation plate for preventing coloring, a viewing angle widening film for improving the viewing angle of a liquid crystal display, and a brightness enhancement film for increasing the contrast of the display are used. These films are collectively called optical films.
- the adhesive is usually used.
- the adhesive between the optical film and the liquid crystal cell or the optical film is usually in close contact with each other using an adhesive in order to reduce the loss of light.
- the adhesive has an advantage that a drying step is not required to fix the optical film. Therefore, the adhesive is a pressure-sensitive adhesive optically provided in advance as an adhesive layer on one side of the optical film. Film is commonly used.
- the pressure-sensitive adhesive optical film a pressure-sensitive adhesive optical film provided with a pressure-sensitive adhesive layer via an anchor layer is used in order to improve the anchoring property of the pressure-sensitive adhesive layer to the optical film (Patent Document). 1).
- the adhesive optical film is highly durable under various environmental conditions, for example, in a high heat and high humidity environment, as the use of image display devices such as televisions, monitors, car navigation systems, and mobile phones expands. Even if it is used for a long time, the optical properties are No change is required (the transparent protective film does not degrade and degrade with polarizing plates, and the polarization characteristics do not change), and appearance defects such as foaming and peeling of the adhesive layer are not required. ing. In particular, demands for improving the appearance of conventional adhesive optical films are increasing due to the increase in size, brightness, and definition of liquid crystal displays.
- Patent Document 2 In order to prevent decomposition and deterioration of the protective film, a method of reducing the amount of acrylic acid in the adhesive (Patent Document 2) and a method of adding tertiary amine to the adhesive (Patent Document 3) are known. Speak. However, these methods have been unable to suppress changes in polarization characteristics of the polarizing plate and foaming and peeling of the pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive layer and the anchor layer are conventionally formed using a water-dispersed material due to the problem of force and environment, which has been conventionally formed using a solvent-type material. A lot is coming.
- Patent Document 1 Japanese Patent Laid-Open No. 10-20118
- Patent Document 2 JP 59-111114 A
- Patent Document 3 Japanese Patent Laid-Open No. 4-254803
- an adhesive layer is laminated on at least one surface of an optical film via an anchor layer, and at least one of the anchor layer and the adhesive layer is formed of a water-dispersible material.
- An adhesive optical film having a high durability and capable of suppressing changes in optical properties to a small extent even under high heat and high humidity environments. For the purpose. Furthermore, it aims at providing the image display apparatus using the said adhesion type optical film. Means for solving the problem
- the present invention provides an adhesive optical film in which an adhesive layer is laminated on at least one surface of an optical film via an anchor layer.
- the anchor layer is 5 to 300 nm
- the adhesive layer is 5 to 50 ⁇ m
- At least one of the anchor layer and the pressure-sensitive adhesive layer is formed of a water-dispersed material containing ammonia
- the layer formed of the water-dispersed material containing ammonia has an ammonia amount of 10 ng or more per 1 cm 2 of the pressure-sensitive adhesive optical film as measured from the layer,
- Adhesive optical film The present invention relates to an adhesive optical film characterized in that the total ammonia contained in 1 cm 2 is 2000 ng or less.
- the pressure-sensitive adhesive optical film is suitable when the pressure-sensitive adhesive layer is formed of a water-dispersed acrylic pressure-sensitive adhesive containing ammonia.
- the adhesive optical film is suitable when the anchor layer is formed of an anchor agent containing ammonia and containing a water-dispersed polymer.
- the anchor agent may further contain an antistatic agent.
- an antistatic agent By containing an antistatic agent in the anchor agent, an antistatic function can be imparted to the anchor layer.
- the present invention relates to an image display device using at least one adhesive optical film.
- the pressure-sensitive adhesive optical film of the present invention is used in combination of one sheet or a plurality of films depending on various usages of image display devices such as liquid crystal display devices.
- the adhesive optical film of the present invention relates to a case where the anchor layer and Z or the adhesive layer are formed of a water-dispersible material from the viewpoint of the environment.
- the water-dispersed material is often neutralized with ammonia in order to maintain the dispersion stability of the aqueous dispersion.
- An agent layer can be formed.
- the amount of ammonia contained per lcm 2 of the pressure-sensitive adhesive optical film which is measured due to the ammonia contained in the anchor layer and Z or the pressure-sensitive adhesive layer, is controlled to be not less than lOng. If the amount of ammonia is less than 10 ⁇ g, appearance defects such as streaks and unevenness occur in the resulting adhesive optical film, which is not preferable.
- the ammonia amount is preferably 15 ng or more, more preferably 20 ng or more.
- the proportion of ammonia present in the anchor layer and / or the pressure-sensitive adhesive layer is also increased.
- the proportion of ammonia present in the anchor layer and Z or the pressure-sensitive adhesive layer increases, the polarization specification of the polarizing plate changes when, for example, a polarizing plate is used as an optical film in a high heat and high humidity environment. As a result, the optical characteristics are affected, and high durability under high heat and high humidity environments cannot be satisfied. Further, it is not preferable in that an appearance defect is caused by foaming or peeling of the anchor layer or the pressure-sensitive adhesive layer.
- the total ammonia amount per lcm 2 of the adhesive optical film which is measured due to the ammonia contained in the anchor layer and / or the adhesive layer, is controlled to be 2000 ng or less.
- the ammonia amount is preferably 1800 ng or less, more preferably 1500 ng or less.
- the ammonia amount is measured as the total amount contained in the anchor layer and the pressure-sensitive adhesive layer.
- FIG. 1 is a cross-sectional view of an example of an adhesive optical film of the present invention.
- FIG. 2 is a cross-sectional view of another example of the pressure-sensitive adhesive optical film of the present invention.
- a pressure-sensitive adhesive layer 3 is laminated on one side of an optical film 1 with an anchor layer 2 interposed therebetween.
- an antistatic layer 4 can be provided.
- the antistatic layer 4 is between the anchor layer 2 and the adhesive layer 3.
- the antistatic layer can be provided between the optical film 1 and the anchor layer 2 and between each layer.
- the anchor layer 2 and the pressure-sensitive adhesive layer 3 are formed of at least one of the water dispersible materials.
- the anchor layer 2 can be provided with an antistatic function by containing an antistatic agent such as a water-dispersed conductive polymer in the anchor layer forming material.
- the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive.
- the pressure-sensitive adhesive is not particularly limited, and for example, an acrylic polymer, silicone polymer, polyester, polyurethane, polyamide, polyether, fluorine-based or rubber-based polymer is appropriately selected and used. be able to. In particular, those excellent in optical transparency, exhibiting appropriate wettability, cohesiveness, and adhesive pressure-sensitive adhesive properties and excellent in weather resistance, heat resistance, etc. are preferably used. An acrylic pressure-sensitive adhesive is preferably used as one exhibiting such characteristics.
- the acrylic pressure-sensitive adhesive has, as a base polymer, an acrylic polymer having an alkyl (meth) acrylate monomer unit as a main skeleton.
- (meta) acrylate refers to ate and Z or meta acrylate, and (meta) in the present invention has the same meaning.
- the average number of carbon atoms of the alkyl group of the alkyl (meth) acrylate that constitutes the main skeleton of the acrylic polymer is about 1 to 12, and specific examples of the alkyl (meth) acrylate include methyl (meth) acrylate.
- alkyl (meth) acrylates having 1 to 9 carbon atoms in the alkyl group are preferred.
- One or more kinds of monomers are introduced into the acrylic polymer by copolymerization for the purpose of improving adhesiveness and heat resistance.
- Specific examples of such copolymerization monomers include (meth) acrylic acid 2-hydroxyethyl, (meth) acrylic acid 2-hydroxypropyl, (meth) acrylic acid 4-hydroxybutyl, and (meth) acrylic acid.
- Monohydric acid group-containing monomer Prolacton adduct of acrylic acid; Styrene sulfonic acid Caryl sulfonic acid, 2- (meth) acrylamide 2-methyl propane sulfonic acid, (meth) acrylamide propane sulfonic acid, sulfopropyl (meth)
- examples thereof include sulfonic acid group-containing monomers such as attalylate and (meth) atalyloxynaphthalene sulfonic acid; and phosphoric acid group-containing monomers such as 2-hydroxyethyl acryloyl phosphate.
- (N-substituted) amides such as (meth) acrylamide, N, N dimethyl (meth) acrylamide, N-butyl (meth) acrylamide, N-methylol (meth) acrylamide, N-methylolpropane (meth) acrylamide, etc.
- examples of copolymerizable monomers other than the above include silane-based monomers containing a silicon atom.
- silane monomer for example, 3-Atalyloxypro Pyrtriethoxysilane, Vinyltrimethoxysilane, Vinyltriethoxysilane, 4-Vinylbutyltrimethoxysilane, 4-Butylbutyltriethoxysilane, 8-Buluoctyltrimethoxysilane, 8 Vinyloctyltriethoxysilane, 10- Examples thereof include methacryloyloxydecyltrimethoxysilane, 10-acryloyloxydecyltrimethoxysilane, 10-methacryloyloxydecyltriethoxysilane, and 10-acryloyloxydecyltriethoxysilane.
- carboxyl group-containing monomers such as acrylic acid are preferably used from the viewpoint of adhesion to liquid crystal cells and adhesion durability for optical film applications.
- the proportion of the copolymerization monomer in the acrylic polymer is not particularly limited, but is preferably about 0.1 to 10% by weight.
- the average molecular weight of the acrylic polymer is not particularly limited, but the weight average molecular weight is preferably about 300,000 to 2.5 million.
- the acrylic polymer is produced by various known techniques depending on the type of adhesive (solvent type, water dispersion type).
- a solution polymerization method can be employed to prepare an acrylic polymer for use in a solvent-type adhesive.
- the radical polymerization initiator various known ones such as azo-based and peroxyacid-based initiators can be used.
- the reaction temperature is usually about 50-80 ° C and the reaction time is 1-8 hours.
- an acrylic polymer solvent ethyl acetate, toluene or the like is generally used.
- Solution concentration is usually about 20-80% by weight
- an emulsion polymerization method can be employed to prepare an acrylic polymer used for the water-dispersed pressure-sensitive adhesive.
- a suspension polymerization method can also be employed.
- the polymerization initiator, the emulsifier and the like used in the emulsion polymerization method are not particularly limited and can be appropriately selected and used.
- Examples of the polymerization initiator include 2,2'-azobisisobutyric-tolyl, 2,2'-azobis.
- the polymerization initiator may be used alone or in admixture of two or more kinds, but the total content is 0.005 to 100 parts by weight of the monomer. It is preferable to be about ⁇ 1 part by weight, more preferably about 0.02-0.5 part by weight.
- a chain transfer agent may be used for the emulsion polymerization!
- a chain transfer agent By using a chain transfer agent, the molecular weight of the acrylic polymer can be appropriately adjusted.
- chain transfer agent examples include lauryl mercabtan, glycidyl mercabtan, mercaptoacetic acid, 2-mercaptoethanol, thioglycolic acid, 2-ethylhexyl thiodalcholate, and 2,3 dimercapto 1 propanol.
- chain transfer agents may be used alone or in admixture of two or more, but the total content is 0.01 to 100 parts by weight of monomer. -0.5. About 5 parts by weight.
- the emulsifier examples include sodium lauryl sulfate, ammonium lauryl sulfate, sodium dodecylbenzene sulfonate, ammonium polyoxyethylene alkyl ether sulfate, sodium polyoxyethylene alkyl ether ether sulfate, and the like.
- ON-based emulsifier, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene fatty acid ester, polyoxyethylene polyol Examples include non-one emulsifiers such as xylpropylene block polymers. These emulsifiers may be used alone or in combination of two or more.
- reactive emulsifiers emulsifiers into which radical polymerizable functional groups such as probe groups and aryl ether groups are introduced, specifically, for example, Aqualon HS-10, HS-20, KH- 10, BC-05, BC-10, BC-20 (Daiichi Kogyo Seiyaku Co., Ltd.), Adekaria Soap SE10N (Asahi Den-en).
- Reactive emulsifiers are preferable because they are incorporated into the polymer chain after polymerization and thus have improved water resistance.
- the amount of the emulsifier used is 0.3 to 100 parts by weight of the monomer, more preferably 0.5 to 5 parts by weight, and 0.5 to 5 parts by weight from the viewpoint of polymerization stability and mechanical stability.
- the above-mentioned monomers and copolymerization monomers are first mixed, and an emulsifier and water are added thereto, followed by emulsification to prepare emulsion.
- the monomer at this time can be blended in whole or part of the total amount used, and the rest can be added dropwise during the polymerization.
- a polymerization initiator and, if necessary, water are added to the emulsion to carry out emulsion polymerization.
- Water can be appropriately selected depending on the polymerization method described later, which may be blended only at the time of preparing the emulsion, or may be blended thereafter.
- the amount of water is not particularly limited, but is adjusted so that the solid content concentration of the acrylic polymer after emulsion polymerization is 30 to 75% by weight, preferably 35 to 70% by weight. It is preferable.
- the method of emulsion polymerization is not particularly limited, and can be appropriately selected such as a batch polymerization method, a total amount dropping method, or a two-stage polymerization method combining these.
- a monomer mixture, an emulsifier, and water are charged into a reaction vessel and emulsified by stirring and mixing to prepare emulsion, and then a polymerization initiator and, if necessary, water are added to the reaction vessel.
- Emulsion polymerization for example, a monomer mixture, an emulsifier, and water are charged into a reaction vessel and emulsified by stirring and mixing to prepare emulsion, and then a polymerization initiator and, if necessary, water are added to the reaction vessel.
- a monomer mixture, an emulsifier and water are added and emulsified by stirring and mixing to prepare a dropping solution, and a polymerization initiator and water are charged in a reaction vessel, and then dropped.
- the liquid is dropped into the reaction vessel and emulsion polymerization is performed.
- the pressure-sensitive adhesive (solvent type, water-dispersed type!)
- a pressure-sensitive adhesive composition containing a crosslinking agent can be obtained.
- the crosslinking agent that can be incorporated into the pressure-sensitive adhesive include organic crosslinking agents and polyfunctional metal chelates.
- the organic crosslinking agent include an epoxy crosslinking agent, an isocyanate crosslinking agent, an imine crosslinking agent, an oxazoline crosslinking agent, a melamine crosslinking agent, and an aziridine crosslinking agent.
- the organic crosslinking agent is preferably an isocyanate crosslinking agent.
- the polyfunctional metal chelate is one in which a polyvalent metal is covalently bonded or coordinated with an organic compound.
- Multivalent metal atoms include Al, Cr, Zr, Co, Cu, Fe, Ni, V, Zn, In, Ca, Mg, Mn, Y, Ce, Sr, Ba, Mo, La, Sn, Ti, etc. Can be given.
- Examples of the atoms in the organic compound to be covalently bonded or coordinated include oxygen atoms, and examples of the organic compound include alkyl esters, alcohol compounds, carboxylic acid compounds, ether compounds, and ketone compounds. .
- the mixing ratio of the base polymer such as an acrylic polymer and the crosslinking agent is not particularly limited! However, usually, the crosslinking agent (solid content) is preferably about 0.01 to 10 parts by weight and more preferably about 0.1 to 5 parts by weight with respect to 100 parts by weight of the base polymer (solid content).
- Sarakuko has a tackifier, a plasticizer, glass fiber, glass beads, metal powder, other inorganic powders, a filler, a pigment, a colorant, and the like as necessary. Fillers, antioxidants, ultraviolet absorbers, silane coupling agents, and the like, and various additives can be appropriately used within the range V and without departing from the object of the present invention. Moreover, it is good also as an adhesive layer etc. which contain microparticles
- the water-dispersed pressure-sensitive adhesive When a water-dispersed pressure-sensitive adhesive (particularly a water-dispersed acrylic pressure-sensitive adhesive) is used as the pressure-sensitive adhesive, the water-dispersed pressure-sensitive adhesive is neutralized with ammonia water.
- Ammonia water is usually used as an aqueous solution having a concentration of 1 to 20%.
- the ammonia water is blended so that the amount of ammonia contained in the pressure-sensitive adhesive layer formed on the optical film is not less than lOng, and the amount of ammonia contained in the pressure-sensitive adhesive optical film is not more than 2000 ng. Be controlled. Control of the amount of ammonia contained in the pressure-sensitive adhesive layer is appropriately adjusted depending on the amount of ammonia contained in the anchor layer, the thickness of the pressure-sensitive adhesive layer, and the like.
- the amount of the ammonia water is usually the solid content 1 contained in the water-dispersed pressure-sensitive adhesive. It is preferable to blend so that the amount of ammonia contained in the ammonia water is about 0.05 to 5 parts by weight, more preferably 0.1 to 1 parts by weight with respect to 00 parts by weight.
- water-dispersed pressure-sensitive adhesive neutralized with ammonia water in addition to the above additives, for example, known ones such as a pH buffer, an antifoaming agent, and a stabilizer can be appropriately used. .
- the material for forming the anchor layer is not particularly limited, and examples thereof include various polymers, metal oxide sols, silica sols, and the like. Of these, polymers are particularly preferably used.
- the polymer may be used in any of solvent-soluble type, water-dispersed type, and water-soluble type.
- polymers examples include polyurethane-based resins, polyester-based resins, talyl-based resins, polyether-based resins, cellulose-based resins, polybulal alcohol-based resins, polyvinylpyrrolidone, and polystyrene-based resins.
- examples include greaves.
- polyurethane resin, polyester resin, and acrylic resin are particularly preferable.
- a cross-linking agent can be appropriately blended with these rosins.
- These other binder components can be used alone or in combination of two or more as appropriate.
- examples of the polymers include polymers containing an amino group in the molecule.
- polymers containing an amino group in the molecule include polyethyleneimine, polyallylamine, polybulamine, polybulurpyridine, polybulurpyrrolidine, and dimethylaminoethyl acrylate which is a copolymer monomer of the above acrylic adhesive. And polymers of amino group-containing monomers. Of these, polyethyleneimine is preferred.
- the anchor layer is formed of a water dispersion type material
- a water dispersion type polymer is used.
- the water-dispersible polymer include those obtained by emulsifying various types of resins such as polyurethane and polyester using an emulsifier, and water-dispersible key groups, cationic groups, or non-ions in the resin. Examples include self-emulsified by introducing a group.
- a crosslinking reaction type water-soluble compound can be used as a material for forming the anchor layer.
- a cross-linking water-soluble compound is a compound, oligomer, or polymer that is soluble in water before the cross-linking reaction, and forms a three-dimensional network structure and becomes insoluble in water after the cross-linking reaction.
- a two-component reactive water-soluble epoxy resin a melamine-formalin resin, a urea-formalin resin, and the like.
- a two-component reaction type water-soluble epoxy resin comprises a water-soluble polyfunctional epoxy resin and a water-soluble curing agent as main components, and by mixing both, an addition-type crosslinking reaction occurs.
- water-soluble polyfunctional epoxy resins include triglycidyl isocyanurate, sorbitol polyglycidyl ether, (poly) dalicerol polyglycidyl ether, (poly) ethylene glycol diglycidyl ether, and (poly) propylene glycol diglycidyl.
- water-soluble polyfunctional epoxy resins include triglycidyl isocyanurate, sorbitol polyglycidyl ether, (poly) dalicerol polyglycidyl ether, (poly) ethylene glycol diglycidyl ether, and (poly) propylene glycol diglycidyl.
- examples thereof include aliphatic glycidyl ethers such as ethers and alicyclic glycidyl ethers such as sorbitan polyglycidyl ethers.
- water-soluble curing agents include aliphatic polyamines such as diethylenetriamine, triethylenetetramine, and polyamidoamine, imidazoles such as 2-methylimidazole and 2-ethyl-4-methylimidazole, and benzyl.
- aliphatic polyamines such as diethylenetriamine, triethylenetetramine, and polyamidoamine
- imidazoles such as 2-methylimidazole and 2-ethyl-4-methylimidazole
- benzyl examples include tertiary amines such as dimethylamine, acid anhydrides such as methyl hymic anhydride and phthalic anhydride, and Lewis acids such as boron trifluoride.
- Urea mono-formalin or melamine mono-formalin is obtained by subjecting an initial prepolymer obtained by addition reaction of urea and formaldehyde or melamine and formaldehyde to a dehydration condensation reaction.
- the initial prepolymer may be denatured with phenols or benzoguanamine.
- Examples of the commercial products of the initial prepolymers include the Euramin series (Mitsui Chemicals) and the Yucarac series (Sanwa Chemical Co., Ltd.).
- the anchor agent is used after neutralization with ammonia water.
- Ammonia water is usually used as an aqueous solution having a concentration of 1 to 20%.
- the composition of the ammonia water is controlled so that the amount of ammonia contained in the anchor layer formed on the optical film is not less than lOng and the amount of ammonia contained in the adhesive optical film is not more than 2000 ng. Is done. Control of the amount of ammonia contained in the anchor layer is appropriately adjusted depending on the amount of ammonia contained in the adhesive layer, the thickness of the anchor layer, and the like.
- the amount of the ammonia water is usually such that the ammonia contained in the ammonia water is about 0.05 to 5 parts by weight with respect to 100 parts by weight of the solid content contained in the water-dispersed polymer. Further, it is preferable to blend in an amount of 0.1 to 1 part by weight.
- the anchor agent may contain an antistatic agent.
- the antistatic agent is not particularly limited as long as it can impart conductivity, and examples thereof include ionic surfactants, conductive polymers, metal oxides, carbon black, and carbon nanomaterials.
- Examples of the ionic surfactant include a cationic system (quaternary ammonium salt type, phospho-um salt type, sulfo-um salt type, etc.), and aion type (carboxylic acid type, Sulfonate type, sulfate type, phosphate type, phosphite type, etc.), amphoteric ion type (sulfobetaine type, alkylbetaine type, alkylimidazolium betaine type, etc.), non-one type (multivalent alcohol derivative) , ⁇ -cyclodextrin inclusion complex, sorbitan fatty acid monoester, sorbitan fatty acid diester, polyalkylene oxide derivative, amine oxide, etc.).
- a cationic system quaternary ammonium salt type, phospho-um salt type, sulfo-um salt type, etc.
- aion type carboxylic acid type, Sulfonate type, sulfate type, phosphat
- the conductive polymer a polymer having good optical properties, appearance, antistatic effect and antistatic effect when heated and humidified is used.
- a conductive polymer include polymers such as polyarine, polythiophene, polypyrrole, and polyquinoxaline.
- polyarine, polythiophene, and the like that are likely to become an ultraviolet curable conductive polymer, a water-soluble conductive polymer, or a water-dispersible conductive polymer are preferably used.
- the coating liquid for forming the antistatic layer can be prepared as an aqueous solution or an aqueous dispersion, and there is no need to use an organic solvent for the coating liquid. . Therefore, it is possible to suppress deterioration and deterioration of the optical film base material due to the organic solvent.
- the aqueous solution or aqueous dispersion preferably contains only water as a solvent from the viewpoint of adhesion, but may contain a hydrophilic solvent.
- hydrophilic solvent examples include methanol, ethanol, ⁇ propanol, isopropanol, ⁇ -butanol, isobutanol, sec butanol, tert-butanol, n-amyl alcohol, isoamyl alcohol, sec amyl alcohol, tert amyl alcohol.
- alcohols such as 1-ethyl-1-propanol, 2-methyl-1-butanol, n-xanol, and cyclohexanol.
- Weight average molecule of water-soluble or water-dispersible polyarin in terms of polystyrene The amount is preferably 500,000 or less, more preferably 300,000 or less.
- the water-soluble or water-dispersible polythiophene has a weight average molecular weight in terms of polystyrene of preferably 400 000 or less, more preferably 300000 or less. When the weight average molecular weight exceeds the above value, the water solubility or water dispersibility tends to be insufficient.
- the water solubility of the water-soluble conductive polymer means a case where the solubility in 100 g of water is 5 g or more.
- the solubility of the water-soluble conductive polymer in 100 g of water is preferably 20-30 g.
- a water-dispersible conductive polymer is a polymer in which a conductive polymer such as polyaline or polythiophene is in the form of fine particles and dispersed in water.
- the aqueous dispersion has a small liquid viscosity and can be easily applied to a thin film. Or the uniformity of the coating layer is excellent.
- the fine particle size of 1 ⁇ m or less is preferable in terms of the uniformity of the antistatic layer.
- the water-soluble conductive polymer or water-dispersible conductive polymer such as polyarin and polythiophene preferably has a hydrophilic functional group in the molecule.
- hydrophilic functional groups include sulfone groups, amino groups, amide groups, imino groups, quaternary ammonium bases, hydroxy groups, mercapto groups, hydrazino groups, carboxyl groups, sulfate ester groups, and phosphate esters. Group or a salt thereof.
- Examples of commercially available water-soluble conductive polymers include poly-phosphorus sulfonic acid (manufactured by Mitsubishi Rayon Co., Ltd., weight average molecular weight in terms of polystyrene of 150,000).
- Examples of commercially available water-dispersible conductive polymers include polythiophene-based conductive polymers (manufactured by Nagase Chemtech, Denatron series).
- Examples of the metal oxide include tin oxide, antimony oxide, indium oxide, and zinc oxide. Of these, tin oxide is preferable.
- Examples of tin oxide-based materials include tin oxide, antimony-doped tin oxide, indium-doped tin oxide, aluminum-doped tin oxide, tungsten-doped tin oxide, and titanium oxide cerium oxide. Examples thereof include a composite of um tin monoxide and a composite of titanium oxide tin oxide.
- the metal oxide is usually fine and preferably has a particle or needle shape. The average particle diameter of the fine particles is about 1 to 100 nm, preferably 2 to 50 nm.
- Materials other than the above include acetylene black, ketjen black, natural graphite, artificial graphite, titanium black, carbon nanomaterial, cationic type (quaternary ammonium salt, etc.), zwitterionic type (betaine) Homopolymers or copolymers of ionic conductive groups of anion type (sulfonates, etc.) or nonion type (glycerin, etc.), having a quaternary ammonium base
- Examples thereof include materials obtained by alloying an ionic conductive polymer such as a polymer having a structural unit derived from acrylate or metatalylate, or a hydrophilic polymer such as a polyethylene metatalylate copolymer into an acrylic resin.
- the carbon nanomaterial include carbon nanotubes, carbon nanohorns, carbon nanowalls, and fullerenes. Among these, it is preferable to use carbon nanotubes.
- the blending amount of the antistatic agent is, for example, 70 parts by weight or less, preferably 50 parts by weight or less, with respect to 100 parts by weight of the polymers used in the anchor agent.
- the point of the antistatic effect is preferably 10 parts by weight or more, more preferably 20 parts by weight or more.
- An antistatic layer can also be formed using the antistatic agent as shown in FIG.
- a binder component may be used in combination as appropriate.
- the binder component is not particularly limited, and various types of resin such as thermosetting resin and ultraviolet curable resin can be used.
- the noinder component polymers used for forming the anchor layer can be used.
- the optical film used in the pressure-sensitive adhesive optical film of the present invention those used for forming an image display device such as a liquid crystal display device are used, and the kind thereof is not particularly limited.
- the optical film includes a polarizing plate.
- a polarizing plate having a transparent protective film on one side or both sides of a polarizer is generally used.
- the polarizer is not particularly limited, and various types can be used.
- polarizers include hydrophilic polymer films such as polyalcohol-based films, partially formalized polybulal alcohol-based films, and ethylene / acetic acid copolymer-based partially-coated films, and iodine and dichroic dyes.
- Polyvinyl alcohol, uniaxially stretched by adsorbing dichroic substances Polyethylene oriented films and the like such as dehydrated treated products and polyhydrochlorinated dehydrochlorinated products.
- a polarizer having a dichroic substance power such as a polybutyl alcohol film and iodine is preferable.
- the thickness of these polarizers is not particularly limited, but is generally about 5 to 80 / zm.
- a polarizer obtained by dyeing a polyvinyl alcohol film with iodine and uniaxially stretching it is prepared by, for example, dyeing polyvinyl alcohol by immersing it in an aqueous solution of iodine and stretching it 3 to 7 times the original length. Can do. If necessary, it can also be immersed in an aqueous solution of potassium iodide or the like which may contain boric acid, zinc sulfate, or sodium chloride. Furthermore, if necessary, the polybulal alcohol film can be immersed in water and washed before dyeing. By washing the polybulal alcohol film with water, it is possible to clean the surface of the polybulal alcohol film and the anti-blocking agent.
- the stretching may be performed after dyeing with iodine, may be performed while dyeing, or may be stretched and dyed with strong iodine. It can be stretched in an aqueous solution of boric acid or potassium iodide or in a water bath.
- a material for forming the transparent protective film provided on one or both sides of the polarizer a material excellent in transparency, mechanical strength, thermal stability, moisture barrier property, isotropy, and the like is preferable.
- polyester-based polymers such as polyethylene terephthalate and polyethylene naphthalate
- cenorelose-based polymers such as dicetinoresenolose and triacetinoresenellose
- acrylic polymers such as polymethylmetatalylate, polystyrene
- examples include styrene polymers such as styrene copolymers (AS resin) and polycarbonate polymers.
- polyethylene, polypropylene, polyolefins having a cyclo or norbornene structure polyolefin polymers such as ethylene / propylene copolymers, salt bubul polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, Snorephone-based polymer, Polyetherenorenolephone-based polymer, Polyethylene-noreno-ketone-based polymer, Polyphenylene sulfide-based polymer, Vinyl alcohol-based polymer, Vinylidene chloride-based polymer, Vinyl butyral-based polymer, Arylate-based polymer, Polyoxymethylene-based Polymer, epoxy polymer, or polymer block
- polymers that form the transparent protective film include lends.
- the transparent protective film can also be formed as a cured layer of thermosetting or ultraviolet curable resin such as acrylic, urethane, acrylurethane, epoxy, and silicone.
- a polymer film described in JP-A-2001-343529 for example, (A) a thermoplastic resin having a substituted and Z or unsubstituted imide group in the side chain, and (B) a side chain And a resin composition containing a thermoplastic resin having a substituted and Z or unsubstituted file and -tolyl group.
- a specific example is a film of a resin composition containing an alternating copolymer of isobutylene and N-methylmaleimide and an acrylonitrile / styrene copolymer.
- a film such as a mixed extruded product of a resin composition can be used.
- the thickness of the protective film can be appropriately determined, but is generally about 1 to 500 m from the viewpoints of workability such as strength and handleability, and thin film properties. In particular, 5 to 200 m is preferable.
- a protective film having a thickness of 90 nm to +75 nm is preferably used.
- the thickness direction retardation (Rth) is more preferably from 80 nm to +60 nm, and particularly preferably from 70 nm to +45 nm.
- a cellulose polymer such as triacetyl cellulose is preferred from the viewpoints of polarization characteristics and durability.
- a triacetyl cellulose film is particularly preferable.
- protective films having the same polymer material strength may be used on the front and back sides, or different protective films having the same polymer material strength may be used.
- the polarizer and the protective film are usually in close contact with each other through an aqueous adhesive or the like.
- water-based adhesives include isocyanate-based adhesives, polyvinyl alcohol-based adhesives, gelatin-based adhesives, vinyl-based latex-based, water-based polyurethane, water-based polyester, and the like.
- a hard coat layer or an antireflection coating is provided on the surface of the transparent protective film to which the polarizer is not adhered. It may be subjected to a stop treatment, prevention of sticking, or treatment for diffusion or anti-glare.
- the hard coat treatment is performed for the purpose of preventing the surface of the polarizing plate from being scratched.
- curing with excellent UV hardness curable resin such as acrylic and silicone is excellent in hardness and sliding properties. It can be formed by a method of adding a film to the surface of the transparent protective film.
- the antireflection treatment is performed for the purpose of preventing reflection of external light on the surface of the polarizing plate, and can be achieved by forming an antireflection film or the like according to the conventional art.
- the sticking prevention treatment is performed for the purpose of preventing adhesion with an adjacent layer of another member.
- the anti-glare treatment is performed for the purpose of preventing external light from being reflected on the surface of the polarizing plate and obstructing visual recognition of the light transmitted through the polarizing plate. It can be formed by imparting a fine concavo-convex structure to the surface of the transparent protective film by an appropriate method such as a surface roughening method or a method of blending transparent fine particles.
- the fine particles to be included in the formation of the surface fine concavo-convex structure include silica, alumina, titanium dioxide, zirconium oxide, tin oxide, indium oxide, cadmium oxide, and acid oxide having an average particle diameter of 0.5 to 50 ⁇ m.
- Transparent fine particles such as inorganic fine particles that may have conductivity such as antimony and organic fine particles (including beads) that also have crosslinked or uncrosslinked polymer are used.
- the amount of fine particles used is generally about 2 to 50 parts by weight with respect to 100 parts by weight of the transparent resin forming the surface fine concavo-convex structure, and 5 to 25 parts by weight preferable.
- the anti-glare layer may also serve as a diffusion layer (viewing angle expanding function or the like) for diffusing the light transmitted through the polarizing plate and expanding the viewing angle.
- the antireflection layer, the anti-sticking layer, the diffusion layer, the antiglare layer, and the like can be provided on the transparent protective film itself, and as a separate optical layer from the transparent protective film. It can also be provided.
- the optical film is used for forming a liquid crystal display device such as a reflection plate, an anti-transmission plate, a retardation plate (including wavelength plates such as 1Z2 and 1Z4), a viewing angle compensation film, and a brightness enhancement film. And an optical layer that has a problem. These can be used alone as an optical film, or can be laminated on the polarizing plate for practical use and used in one or more layers.
- a reflective polarizing plate or a semi-transmissive polarizing plate in which a polarizing plate is further laminated with a reflective plate or a semi-transmissive reflective plate, and an elliptical polarizing plate or a circular plate in which a retardation plate is further laminated on a polarizing plate.
- a polarizing plate, a wide viewing angle polarizing plate in which a viewing angle compensation film is further laminated on the polarizing plate, or a polarizing plate in which a brightness enhancement film is further laminated on the polarizing plate are preferable.
- the reflective polarizing plate is a polarizing plate provided with a reflective layer, and is used to form a liquid crystal display device that reflects incident light from the viewing side (display side).
- the built-in light source such as a backlight can be omitted and the liquid crystal display device can be thinned easily.
- the reflective polarizing plate can be formed by an appropriate method such as a method in which a reflective layer having a metal isotropic force is attached to one surface of the polarizing plate via a transparent protective layer or the like, if necessary.
- a reflective layer is formed by attaching a foil vapor deposition film made of a reflective metal such as aluminum on one side of a transparent protective film matted as necessary.
- the transparent protective film may include fine particles having a surface fine uneven structure, and a reflective layer having a fine uneven structure on the surface.
- the reflective layer having the fine concavo-convex structure described above has the advantage that incident light is diffused by irregular reflection to prevent directivity and glaring appearance, and to suppress unevenness in brightness and darkness.
- the protective film containing fine particles has an advantage that incident light and its reflected light are diffused when passing through it and light and darkness can be further suppressed.
- the reflective layer having a fine concavo-convex structure reflecting the surface fine concavo-convex structure of the transparent protective film can be formed by, for example, applying the metal to the surface of the transparent protective layer by an appropriate method such as a vacuum deposition method, an ion plating method, a sputtering method, or a plating method It can be performed by a method of attaching directly to the screen.
- a reflective sheet having a reflective layer provided on an appropriate film according to the transparent film can be used.
- the reflective layer usually has a metallic force
- the usage state in which the reflective surface is covered with a transparent protective film or a polarizing plate is used to prevent the reflectance from being lowered by oxidation, and thus the long-term initial reflectance. It is more preferable in terms of sustainability and avoiding the separate provision of a protective layer.
- the transflective polarizing plate is the above-mentioned! It can be obtained by using a semi-transmissive reflective layer such as a mirror.
- the transflective polarizing plate is usually provided on the back side of the liquid crystal cell.
- the incident light from the viewing side is reflected to display an image.
- the transflective polarizing plate can save energy when using a light source such as a knocklight in a bright atmosphere, and can be used with a built-in power supply even in a relatively low atmosphere. It is useful for the formation of
- a phase difference plate or the like is used when changing linearly polarized light into elliptically or circularly polarized light, changing elliptically or circularly polarized light into linearly polarized light, or changing the polarization direction of linearly polarized light.
- a so-called 1Z4 wavelength plate also called a ⁇ 4 plate
- a 1Z2 wavelength plate (also referred to as ⁇ 2 plate) is usually used to change the polarization direction of linearly polarized light.
- the elliptically polarizing plate compensates (prevents) coloring (blue or yellow) caused by double bending of the liquid crystal layer of the super twist nematic (STN) type liquid crystal display device, and displays the above-mentioned coloring! It is used effectively in such cases. Further, the one having a controlled three-dimensional refractive index is preferable because it can compensate (prevent) coloring that occurs when the screen of the liquid crystal display device is viewed from an oblique direction.
- the circularly polarizing plate is effectively used, for example, when adjusting the color tone of an image of a reflective liquid crystal display device in which an image is displayed in color, and also has an antireflection function.
- Examples of the retardation plate include a birefringent film obtained by uniaxially or biaxially stretching a polymer material, a liquid crystal polymer alignment film, and a liquid crystal polymer alignment layer supported by the film. It is done.
- the thickness of the retardation plate is not particularly limited, but is generally about 20 to 150 / ⁇ ⁇ .
- polymer material examples include polyvinyl alcohol, polyvinyl butyral, polymethylbinole ether, polyhydroxy ethinoaretalylate, hydroxy ethynole cellulose, hydroxypropyl cellulose, methenorescenellose, polycarbonate, polyarylate, Polysulfone, polyethylene terephthalate, polyethylene naphthalate, polyetheroles Lufone, Polyphenylene sulfide, Polyphenylene oxide, Polyallylsulfone, Polyamide, Polyimide, Polyolefin, Polychlorinated butyl, Cellulosic polymer, Norbornene-based resin, Binary or ternary system Examples include copolymers, graft copolymers, and blends. These polymer materials become an oriented product (stretched film) by stretching or the like.
- liquid crystal polymer examples include various main-chain and side-chain types in which a conjugated linear atomic group (mesogen) imparting liquid crystal alignment is introduced into the main chain or side chain of the polymer.
- main chain type liquid crystal polymer examples include a nematic orientation polyester liquid crystal polymer, a discotic polymer and a cholesteric polymer having a structure in which a mesogenic group is bonded at a spacer portion that imparts flexibility. It is done.
- side-chain liquid crystal polymers include polysiloxane, polyacrylate, polymetatalylate, or polymalonate as the main chain skeleton, and nematic alignment imparted via a spacer unit consisting of conjugated atomic groups as side chains. And those having a mesogenic moiety that is a unit force of a para-substituted cyclic compound.
- These liquid crystal polymers are, for example, formed on a surface subjected to alignment treatment such as those obtained by rubbing the surface of a thin film such as polyimide or polybulualcohol formed on a glass plate, or those obtained by obliquely vapor deposition of acid cage. This is done by developing a liquid crystalline polymer solution and heat-treating it.
- the retardation plate may have an appropriate retardation according to the purpose of use, such as for the purpose of compensating for coloring, viewing angle, etc. due to birefringence of various wavelength plates and liquid crystal layers. It may be a laminate in which more than one kind of retardation plate is laminated to control optical characteristics such as retardation.
- the elliptically polarizing plate and the reflective elliptical polarizing plate described above are obtained by laminating a polarizing plate or a reflective polarizing plate and a retardation plate in an appropriate combination.
- the elliptical polarizing plate or the like that can be formed can be formed by sequentially laminating them separately in the manufacturing process of the liquid crystal display device so as to be a combination of a (reflection type) polarizing plate and a retardation plate.
- an optical film such as an elliptically polarizing plate is advantageous in that it has excellent quality stability and lamination workability, and can improve the manufacturing efficiency of a liquid crystal display device.
- the viewing angle compensation film causes the screen of the liquid crystal display device to be oriented slightly obliquely rather than perpendicularly to the screen. This film is intended to widen the viewing angle so that the image can be seen relatively clearly even when viewed with strength.
- a viewing angle compensation phase difference plate for example, a phase difference plate, an alignment film such as a liquid crystal polymer, or a support in which an alignment layer such as a liquid crystal polymer is supported on a transparent substrate can be used.
- a normal retardation plate uses a birefringent polymer film that is uniaxially stretched in the plane direction, whereas a retardation plate used as a viewing angle compensation film is biaxially stretched in the plane direction.
- Birefringence such as a polymer film having a birefringence and a birefringence that has a controlled refractive index in the thickness direction that is uniaxially stretched in the plane direction and is also stretched in the thickness direction.
- a film or the like is used.
- the tilted alignment film include a film obtained by bonding a heat-shrinkable film to a polymer film and stretching or z-shrinking the polymer film under the action of the contraction force by heating, or a film obtained by obliquely aligning a liquid crystal polymer. Etc.
- the raw material polymer for the phase difference plate is the same as the polymer described in the previous phase difference plate, preventing coloration due to a change in the viewing angle based on the phase difference of the liquid crystal cell and expanding the viewing angle for good viewing. Anything suitable for the purpose can be used.
- a liquid crystal polymer alignment layer is supported by a triacetyl cellulose film in order to achieve a wide viewing angle with good visibility.
- the optically compensated retardation plate can be preferably used.
- a polarizing plate obtained by bonding a polarizing plate and a brightness enhancement film is usually used by being provided on the back side of the liquid crystal cell.
- the brightness enhancement film reflects the linearly polarized light with a predetermined polarization axis or circularly polarized light in a predetermined direction when natural light is incident due to a backlight of a liquid crystal display device or the like, or reflection from the back side, and transmits other light.
- a polarizing plate in which a brightness enhancement film is laminated with a polarizing plate allows light from a light source such as a backlight to be incident to obtain transmitted light in a predetermined polarization state, and reflects light without transmitting the light other than the predetermined polarization state. Is done.
- the light reflected on the surface of the brightness enhancement film is further inverted through a reflective layer provided behind the brightness enhancement film and re-incident on the brightness enhancement film, and part or all of the light is transmitted as light having a predetermined polarization state.
- a reflective layer provided behind the brightness enhancement film and re-incident on the brightness enhancement film, and part or all of the light is transmitted as light having a predetermined polarization state.
- the brightness enhancement film allows light having a polarization direction that is absorbed by the polarizer to be reflected once by the brightness enhancement film without being incident on the polarizer, and further through a reflective layer or the like provided on the back side thereof. Inverting and re-entering the brightness enhancement film is repeated, and only the polarized light whose polarization direction is such that the polarization direction of the light reflected and inverted between the two can pass through the polarizer is obtained. Is transmitted to the polarizer so that light such as a backlight can be efficiently used for displaying images on the liquid crystal display device, and the screen can be brightened.
- a diffusion plate may be provided between the brightness enhancement film and the reflective layer.
- the polarized light reflected by the brightness enhancement film is directed to the reflection layer and the like, but the installed diffuser diffuses the light passing therethrough at the same time and simultaneously cancels the polarization state to become a non-polarized state. That is, the light in the natural light state is directed to the reflection layer and the like, is reflected through the reflection layer and the like, passes through the diffusion plate again, and reenters the brightness enhancement film.
- the brightness of the display screen is maintained, and at the same time, uneven brightness of the display screen is reduced.
- the number of repetitions of the initial incident light increased moderately, and combined with the diffusion function of the diffuser, it was possible to provide a uniform brightness V and display screen. It is done.
- the brightness enhancement film transmits linearly polarized light having a predetermined polarization axis and transmits other light such as a dielectric multilayer thin film or a multilayer laminate of thin film films having different refractive index anisotropies.
- Reflecting one of the left-handed or right-handed circularly polarized light and transmitting the other light, such as those that show reflective properties, such as oriented films of cholesteric liquid crystal polymer and those oriented liquid crystal layers supported on a film substrate Appropriate things such as those showing the characteristics to be used can be used.
- a retardation plate that functions as a 1Z4 wavelength plate at a wide wavelength in the visible light region or the like exhibits, for example, a retardation plate that functions as a 1Z4 wavelength plate for light colors with a wavelength of 55 Onm and other retardation characteristics. It can be obtained by a method of superposing a retardation layer, for example, a retardation layer functioning as a 1Z2 wavelength plate. Therefore, the retardation plate disposed between the polarizing plate and the brightness enhancement film may have a retardation layer force of one layer or two or more layers.
- the cholesteric liquid crystal layer also reflects circularly polarized light in a wide wavelength range such as a visible light castle by combining two or more layers with different reflection wavelengths and having an overlapping structure. Based on this, transmission circular polarization in a wide and wavelength range can be obtained.
- the polarizing plate may be a laminate of a polarizing plate such as the above-described polarization-separating polarizing plate and two or more optical layers. Therefore, a reflective elliptical polarizing plate or a semi-transmissive elliptical polarizing plate in which the above-mentioned reflective polarizing plate or semi-transmissive polarizing plate and a retardation plate are combined may be used.
- the optical film in which the optical layer is laminated on the polarizing plate can be formed even in a method of laminating separately in the manufacturing process of a liquid crystal display device or the like. It has excellent quality stability and assembly work! /, And has the advantage of improving the manufacturing process of liquid crystal display devices.
- an appropriate adhesive means such as an adhesive layer can be used.
- the polarizing plate and the other optical layer are bonded, their optical axes can be arranged at an appropriate angle depending on the target retardation characteristics.
- the anchor agent is applied on the optical film described above and dried to form an anchor layer.
- the solid concentration of the anchor agent coating solution is preferably adjusted to about 0.1 to 5% by weight.
- a coating method reverse coating, gravure coating, etc.
- the amount of ammonia contained in the anchor layer can be controlled by adjusting the drying temperature and the drying time.
- the drying temperature is preferably 30 to 150 ° C, more preferably 40 to 120 ° C, and the drying time is 0.5 to 10 minutes, further 1 to 5 minutes.
- the anchor layer has a thickness of 5 to 300 nm.
- the thickness of the anchor layer is preferably 10 to 200 nm. If it is less than 5 nm, it is not sufficient in securing the anchoring property of the optical film and the pressure-sensitive adhesive layer. On the other hand, when the thickness exceeds 300 nm, for example, when the anchor contains an antistatic agent, the anchor layer may be insufficient in strength due to insufficient strength of the anchor layer or may not be able to obtain sufficient anchorage immediately. .
- the optical film can be subjected to an activation treatment.
- Various methods can be used for the activation treatment, such as corona treatment, low-pressure UV treatment, plasma treatment, and the like.
- the activation treatment is effective when a water-dispersed material (and a water-dispersible conductive polymer as an antistatic agent) is used as the anchor layer.
- the activation treatment is effective in the case of optical film strength, particularly polyolefin resin and norbornene resin.
- the pressure-sensitive adhesive layer is formed by laminating on the anchor layer.
- the method for forming the pressure-sensitive adhesive layer is not particularly limited, and examples thereof include a method of applying a pressure-sensitive adhesive solution or an aqueous dispersion to the anchor layer and drying, a method of transferring a release sheet provided with the pressure-sensitive adhesive layer, and the like.
- the coating method is the same as for the anchor agent.
- the thickness of the pressure-sensitive adhesive layer is 5 to 50 / ⁇ ⁇ . Sarako is 10-40 m.
- the amount of ammonia contained in the pressure-sensitive adhesive layer can be controlled by adjusting the drying temperature and the drying time.
- the drying temperature is preferably 80 to 200 ° C, more preferably 100 to 150 ° C, and the drying time is 0.5 to 10 minutes, further 1 to 5 minutes.
- the constituent materials of the release sheet include paper, polyethylene, polypropylene, polyethylene terephthalate and other synthetic resin films, rubber sheets, paper, cloth, non-woven fabrics, nets, foam sheets, metal foils, and laminates thereof. Suitable thin leaf bodies and the like can be mentioned.
- Release sheet surface In order to improve the peelability of the adhesive layer strength, low adhesion release treatment such as silicone treatment, long chain alkyl treatment, fluorine treatment, etc. is applied as necessary! ,.
- each layer such as an optical film and an adhesive layer is made of an ultraviolet absorber such as a salicylic acid ester compound, a benzophenol compound, a benzotriazole compound, a cyanoacrylate compound, or a nickel complex compound.
- an ultraviolet absorber such as a salicylic acid ester compound, a benzophenol compound, a benzotriazole compound, a cyanoacrylate compound, or a nickel complex compound. Ultraviolet absorbing ability may be imparted by treatment.
- the pressure-sensitive adhesive optical film of the present invention can be preferably used for forming various image display devices such as liquid crystal display devices.
- the liquid crystal display device can be formed according to the conventional method. That is, a liquid crystal display device is generally formed by appropriately assembling components such as a liquid crystal cell, an adhesive optical film, and an illumination system as necessary, and incorporating a drive circuit. In other words, except for the use of the optical film, there is no particular limitation, and the conventional film can be applied.
- the liquid crystal cell any type such as an arbitrary type such as a TN type, an STN type, or a ⁇ type can be used.
- An appropriate liquid crystal display device such as a liquid crystal display device in which an adhesive optical film is disposed on one or both sides of a liquid crystal cell or a backlight in a lighting system or a reflector is used can be formed.
- the optical film can be installed on one side or both sides of the liquid crystal cell.
- optical films are provided on both sides, they may be the same or different.
- appropriate components such as a diffusion plate, an antiglare layer, an antireflection film, a protective plate, a prism array, a lens array sheet, a light diffusion plate, and a backlight are placed at appropriate positions. Two or more layers can be arranged.
- organic electroluminescence device organic EL display device
- the optical film (polarizing plate or the like) of the present invention can also be applied to an organic EL display device.
- a transparent electrode, an organic light emitting layer, and a metal electrode are sequentially laminated on a transparent substrate to form a light emitter (organic electroluminescent light emitter).
- the organic light emitting layer is a laminate of various organic thin films, for example, a laminate of a hole injecting layer having an isotropy such as a triphenylamine derivative and a light emitting layer having a fluorescent organic solid force such as anthracene.
- a laminate of such a light emitting layer and a perylene derivative or the like electron injection layer or Alternatively, configurations having various combinations such as a laminate of these hole injection layer, light emitting layer, and electron injection layer are known.
- an organic EL display device holes and electrons are injected into an organic light-emitting layer by applying a voltage to a transparent electrode and a metal electrode, and energy generated by recombination of these holes and electrons. Emits light on the principle that it excites the fluorescent material and emits light when the excited fluorescent material returns to the ground state.
- the mechanism of recombination in the middle is the same as that of a general diode, and as can be expected from this, the current and emission intensity show strong nonlinearity with rectification with respect to the applied voltage.
- the organic EL display device in order to extract light emitted from the organic light emitting layer, at least one of the electrodes must be transparent, and is usually formed of a transparent conductor such as indium tin oxide (ITO).
- ITO indium tin oxide
- a transparent electrode is used as the anode.
- metal electrodes such as Mg Ag and A1-Li are used.
- the organic light emitting layer is formed of a very thin film with a thickness of about lOnm. For this reason, the organic light emitting layer transmits light almost completely like the transparent electrode. As a result, light that is incident on the surface of the transparent substrate when not emitting light, passes through the transparent electrode and the organic light emitting layer, and is reflected by the metal electrode again returns to the surface side of the transparent substrate. When viewed, the display surface of the OLED display looks like a mirror.
- an organic EL display device including an organic electroluminescent light emitting device including a transparent electrode on the front surface side of an organic light emitting layer that emits light when a voltage is applied and a metal electrode on the back surface side of the organic light emitting layer
- a polarizing plate can be provided on the surface side of the electrode, and a retardation plate can be provided between the transparent electrode and the polarizing plate.
- the retardation plate and the polarizing plate have a function of polarizing light incident from the outside and reflected by the metal electrode, the effect of preventing the mirror surface of the metal electrode from being visually recognized by the polarization action. is there.
- the retardation plate is a 1Z4 wavelength plate and the angle between the polarization directions of the polarizing plate and the retardation plate is adjusted to ⁇ Z4, the mirror surface of the metal electrode can be completely shielded.
- the external light incident on the organic EL display device is linearly polarized by the polarizing plate. Only transparent.
- This linearly polarized light is generally elliptically polarized by the retardation plate, but it is circularly polarized when the retardation plate is a 1Z4 wavelength plate and the angle between the polarization direction of the polarizing plate and the retardation plate is ⁇ ⁇ 4. .
- This circularly polarized light is transmitted through the transparent substrate, the transparent electrode, and the organic thin film, reflected by the metal electrode, again transmitted through the organic thin film, the transparent electrode, and the transparent substrate, and again converted into linearly polarized light on the retardation plate. Become. And since this linearly polarized light is orthogonal to the polarization direction of the polarizing plate, it cannot be transmitted through the polarizing plate. As a result, the mirror surface of the metal electrode can be completely shielded.
- a polybulal alcohol film with a thickness of 80 ⁇ m was stretched 5 times in an aqueous iodine solution at 40 ° C and then dried at 50 ° C for 4 minutes to obtain a polarizer.
- a polarizing plate was obtained by bonding a triacetyl cellulose film on both sides of this polarizer using a polyvinyl alcohol-based adhesive.
- Solid solution concentration from solution A (Nagase ChemteX Corp., Denatron P-502RG, solid content 4%) containing water-dispersible polythiophene conductive polymer and water-dispersible polyester resin, and 10% ammonia water A 4% water-dispersed material (anchor agent) was prepared.
- Solution A The ratio (weight ratio) of aqueous ammonia was 100: 0.1 in this order.
- the anchor agent was applied with a wire bar so that the thickness after drying was lOOnm, and dried at 100 ° C. for 1 minute to form an anchor layer.
- the base polymer contains an acrylic polymer with a weight average molecular weight of 2 million consisting of a copolymer of butyl acrylate: acrylic acid: 2-hydroxyethyl acrylate: 100: 5: 0.1 (weight ratio) A solution (24% solids) was used.
- Coronate L manufactured by Nippon Polyurethane Co., Ltd.
- an isocyanate-based multifunctional compound is added to 3.2 parts of 100 parts of polymer solids, and additives (Shin-Etsu Silicone Co., Ltd., KBM-403) are 0. 6 parts of a solvent for adjusting viscosity (ethyl acetate) was added to prepare an adhesive solution (solid content 11%).
- Example 1 a pressure-sensitive adhesive polarizing plate was produced in the same manner as in Example 1 except that the temperature at which the anchor layer was formed was changed from 1 minute at 100 ° C to 1 minute at 50 ° C. .
- Acrylic acid ester (Polyment NK380, manufactured by Nippon Shokubai Co., Ltd.) was prepared with toluene to a solid content S2% to prepare a solvent-type material (anchor agent).
- the anchor agent was applied to one side of the polarizing plate of Example 1 with a wire bar so that the thickness after drying was lOOnm, and dried at 40 ° C. for 2 minutes to form an anchor layer.
- the water-dispersed pressure-sensitive adhesive composition prepared in Example 2 was placed on a release film (Mitsubishi Chemical Polyester, Diafoil MRF38, polyethylene terephthalate base material) so that the thickness after drying was 25 ⁇ m. After applying by the reverse roll coating method, it was dried with a hot air circulating oven at 130 ° C for 3 minutes to form an adhesive layer. The pressure-sensitive adhesive layer was bonded to the surface of the anchor layer formed on the polarizing plate obtained above to produce a pressure-sensitive adhesive polarizing plate.
- a release film Mitsubishi Chemical Polyester, Diafoil MRF38, polyethylene terephthalate base material
- Example 1 the preparation of the water-dispersible material (anchor agent) was carried out in the same manner as in Example 1 except that the ratio (weight ratio) of solution A: ammonia water was changed to 100: 0.01 in this order. In the same manner, an adhesive polarizing plate was produced.
- Example 1 in preparing the water-dispersible material (anchor agent), the solution A: ammonia The ratio of water (weight ratio) was changed in order to 100: 1, and the drying conditions for forming the anchor layer were changed from 100 ° C for 1 minute to 23 ° C for 1 minute. Except for this, an adhesive polarizing plate was produced in the same manner as in Example 1.
- Example 2 the formation of the anchor layer was changed to the formation of the anchor layer described in Example 4, and in preparing the water-dispersed pressure-sensitive adhesive composition, 3 parts of 30 parts by weight of ammonia water with a concentration of 10% were added. In the same manner as in Example 2, except that the drying conditions for forming the adhesive layer were changed from 3 minutes at 100 ° C to 3 minutes at 150 ° C. Was made.
- Example 2 the formation of the anchor layer was changed to the formation of the anchor layer described in Example 4, and in preparing the water-dispersed pressure-sensitive adhesive composition, 30 parts of calorie added with 10% ammonia water was added to 50 parts.
- An adhesive polarizing plate was produced in the same manner as in Example 2 except that the part was changed to the part.
- the adhesive polarizing plate was cut into 9 cm ⁇ 9 cm and subjected to boiling extraction at 120 ° C. for 1 hour in pure water. From this extract, ammonia ions were quantified by ion chromatogram (DIONEX, DX-500). Five samples were measured, the average value was derived from the values, and the value converted per lcm 2 was used as the ammonia amount.
- ⁇ No problem.
- X There is a defect (streaks, unevenness).
- the adhesive polarizing plate was cut into a 15-inch size to prepare a sample. This sample was bonded to a glass plate and the degree of polarization was measured. The polarization degree at this time is defined as the initial polarization degree (A). In addition, the sample was placed in an environment of 90 ° C and an environment of 60 ° C and 95% RH, respectively. After leaving for 1000 hours, the degree of polarization was measured in the same manner as described above. The degree of polarization at this time is defined as the degree of polarization after processing (B). The degree of polarization was measured with a spectral hardness system (DOT-3C, manufactured by Murakami Color Research Laboratory). From the initial polarization degree (A) and the post-treatment polarization degree (B), the amount of change in polarization degree (AB) was calculated.
- A initial polarization degree
- B degree of polarization after processing
- Forming agent X 60 ° C / 95 ° / oRH X
- Example 1 Water dispersion type 1 4 Solvent type 1 4 0 0. 4 0. 3
- Example 2 Water dispersion type 1 4 Water dispersion type 1 850 ⁇ 0. 5 0.5
- Example 4 Solvent type Single water dispersion type 1 400 ⁇ 0. 4 0. 5
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/993,935 US8609243B2 (en) | 2006-03-13 | 2007-01-23 | Pressure-sensitive adhesive optical film and image display |
CN2007800001657A CN101310202B (zh) | 2006-03-13 | 2007-01-23 | 粘合型光学薄膜及图像显示装置 |
KR1020097008548A KR101132583B1 (ko) | 2006-03-13 | 2007-01-23 | 점착형 광학 필름 및 화상 표시 장치 |
EP07713681.0A EP1995612B1 (en) | 2006-03-13 | 2007-01-23 | Adhesive optical film and image display |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-067569 | 2006-03-13 | ||
JP2006067569A JP4236273B2 (ja) | 2006-03-13 | 2006-03-13 | 粘着型光学フィルム及び画像表示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007105378A1 true WO2007105378A1 (ja) | 2007-09-20 |
Family
ID=38509217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/050989 WO2007105378A1 (ja) | 2006-03-13 | 2007-01-23 | 粘着型光学フィルム及び画像表示装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8609243B2 (ja) |
EP (1) | EP1995612B1 (ja) |
JP (1) | JP4236273B2 (ja) |
KR (2) | KR101132583B1 (ja) |
CN (1) | CN101310202B (ja) |
TW (1) | TW200801153A (ja) |
WO (1) | WO2007105378A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009116103A (ja) * | 2007-11-07 | 2009-05-28 | Sumitomo Chemical Co Ltd | 偏光板 |
CN102388324A (zh) * | 2009-03-27 | 2012-03-21 | 3M创新有限公司 | 具有显示面板的光学组件及其制备和拆卸方法 |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5517144B2 (ja) * | 2008-03-03 | 2014-06-11 | 住友化学株式会社 | 粘着剤層付位相差フィルムおよびそれを用いた楕円偏光板、液晶表示装置 |
JP5348581B2 (ja) * | 2008-03-04 | 2013-11-20 | 住友化学株式会社 | 粘着剤層付位相差フィルム、ならびにそれを用いた楕円偏光板および液晶表示装置 |
KR101458901B1 (ko) * | 2008-04-29 | 2014-11-10 | 삼성디스플레이 주식회사 | 가요성 표시 장치의 제조 방법 |
JP2010043158A (ja) * | 2008-08-11 | 2010-02-25 | Nitto Denko Corp | 偏光板用接着剤、偏光板、光学フィルムおよび画像表示装置 |
WO2010061563A1 (ja) * | 2008-11-27 | 2010-06-03 | 三井・デュポンポリケミカル株式会社 | 電子部品用保護フィルム、その製造方法および用途 |
US8581212B2 (en) * | 2009-01-23 | 2013-11-12 | Chimei Innolux Corporation | Portable UV monitoring device |
KR101771758B1 (ko) * | 2009-12-09 | 2017-08-25 | 닛토덴코 가부시키가이샤 | 광학 필름용 점착제층, 점착형 광학 필름, 그 제조 방법 및 화상 표시 장치 |
US10738172B2 (en) | 2009-12-17 | 2020-08-11 | 3M Innovative Properties Company | Display panel assembly and methods of making same |
US20130034713A1 (en) * | 2009-12-17 | 2013-02-07 | Busman Stanley C | Display panel assembly and methods of making same |
JP2013522453A (ja) * | 2010-03-24 | 2013-06-13 | スリーエム イノベイティブ プロパティズ カンパニー | ディスプレイパネルを有する光学アセンブリ、並びにその製造及び分解方法 |
JP5863285B2 (ja) | 2010-06-22 | 2016-02-16 | 日東電工株式会社 | 水分散型粘着剤組成物および粘着剤層の製造方法 |
JP5612388B2 (ja) * | 2010-07-30 | 2014-10-22 | 日東電工株式会社 | 透明導電性フィルム用粘着剤層、粘着剤層付き透明導電性フィルム、透明導電性積層体、およびタッチパネル |
US20130164478A1 (en) * | 2010-08-05 | 2013-06-27 | Oji Holdings Corporation | Double-faced pressure-sensitive adhesive sheet, double-faced pressure-sensitive adhesive sheet with release sheet, process for producing same, and transparent laminate |
JP2012087290A (ja) * | 2010-09-21 | 2012-05-10 | Nitto Denko Corp | 光学フィルム用粘着剤層、その製造方法、粘着剤層付光学フィルムおよび画像表示装置 |
JP5091304B2 (ja) * | 2010-12-24 | 2012-12-05 | 日東電工株式会社 | 粘着型光学フィルムの製造方法 |
JP2013148722A (ja) * | 2012-01-19 | 2013-08-01 | Nitto Denko Corp | 粘着剤層付光学フィルムおよび画像表示装置 |
CN102642353B (zh) * | 2012-03-26 | 2014-09-03 | 明基材料有限公司 | 光学膜粘贴结构及其制作方法 |
JP2014534988A (ja) * | 2012-05-30 | 2014-12-25 | エルジー・ケム・リミテッド | 水系組成物、これを含む光学フィルム、これを用いた偏光板及び液晶表示装置 |
JP5732435B2 (ja) * | 2012-06-08 | 2015-06-10 | 日東電工株式会社 | アンカー層形成用塗布液、粘着剤層付光学フィルムおよびその製造方法 |
JP5707365B2 (ja) * | 2012-06-08 | 2015-04-30 | 日東電工株式会社 | 粘着剤層付光学フィルムの製造方法 |
JP5769667B2 (ja) * | 2012-06-08 | 2015-08-26 | 日東電工株式会社 | 粘着剤層付光学フィルムの製造方法 |
KR101510719B1 (ko) * | 2013-05-29 | 2015-04-10 | (주)티엠에스 | 재접착성 다층 양면테이프 및 그의 제조방법 |
CN103627341A (zh) * | 2013-11-19 | 2014-03-12 | 常熟市长江胶带有限公司 | 绝缘胶带 |
US9791269B2 (en) | 2014-08-29 | 2017-10-17 | Jutta Krebber | Dent mirror |
JP2017119753A (ja) * | 2015-12-28 | 2017-07-06 | 日東電工株式会社 | 表面保護フィルム、表面保護フィルムの製造方法、及び、光学部材 |
KR20190028357A (ko) * | 2016-07-19 | 2019-03-18 | 세키스이가가쿠 고교가부시키가이샤 | 조광 적층체 및 조광 적층체용 수지 스페이서 |
TWI763976B (zh) * | 2018-07-25 | 2022-05-11 | 日商日東電工股份有限公司 | 易接著薄膜及其製造方法、偏光板、以及影像顯示裝置 |
WO2020111235A1 (ja) * | 2018-11-29 | 2020-06-04 | 日東電工株式会社 | 粘着剤層付き偏光フィルム及び画像表示装置 |
JP7372824B2 (ja) * | 2018-11-29 | 2023-11-01 | 日東電工株式会社 | 粘着剤層付き偏光フィルム及び画像表示装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59111114A (ja) | 1982-12-16 | 1984-06-27 | Sekisui Chem Co Ltd | 接着層を有する偏光板 |
JPH04254803A (ja) | 1991-01-30 | 1992-09-10 | Nippon Kayaku Co Ltd | 粘着型偏光板又は粘着型位相差板 |
JPH1020118A (ja) | 1996-07-08 | 1998-01-23 | Sekisui Chem Co Ltd | 粘着型偏光板 |
WO2001037007A1 (fr) | 1999-11-12 | 2001-05-25 | Kaneka Corporation | Film transparent |
JP2001343529A (ja) | 2000-03-30 | 2001-12-14 | Kanegafuchi Chem Ind Co Ltd | 偏光子保護フィルムおよびその製造方法 |
JP2002309212A (ja) * | 2001-04-18 | 2002-10-23 | Nitto Denko Corp | ガラス板用水分散型粘着シートおよび粘着型光学フィルム、液晶表示装置 |
JP2003049148A (ja) * | 2001-08-08 | 2003-02-21 | Nitto Denko Corp | 粘着型光学フィルムおよび液晶表示装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1659457A (zh) * | 2002-06-11 | 2005-08-24 | 日东电工株式会社 | 偏振片、偏振片用胶粘剂、光学薄膜及图像显示装置 |
US20050158136A1 (en) * | 2004-01-15 | 2005-07-21 | Nitto Denko Corporation | Cutting method and cutting apparatus for layered sheet, layered sheet, optical element and image display |
JP4481020B2 (ja) * | 2004-01-22 | 2010-06-16 | 日東電工株式会社 | 光学部材用粘着組成物、光学部材用粘着層、光学部材用粘着シートおよび光学部材 |
-
2006
- 2006-03-13 JP JP2006067569A patent/JP4236273B2/ja active Active
-
2007
- 2007-01-23 WO PCT/JP2007/050989 patent/WO2007105378A1/ja active Application Filing
- 2007-01-23 KR KR1020097008548A patent/KR101132583B1/ko active IP Right Grant
- 2007-01-23 EP EP07713681.0A patent/EP1995612B1/en not_active Not-in-force
- 2007-01-23 CN CN2007800001657A patent/CN101310202B/zh active Active
- 2007-01-23 KR KR1020077022197A patent/KR100924667B1/ko active IP Right Grant
- 2007-01-23 US US11/993,935 patent/US8609243B2/en active Active
- 2007-01-26 TW TW096102956A patent/TW200801153A/zh unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59111114A (ja) | 1982-12-16 | 1984-06-27 | Sekisui Chem Co Ltd | 接着層を有する偏光板 |
JPH04254803A (ja) | 1991-01-30 | 1992-09-10 | Nippon Kayaku Co Ltd | 粘着型偏光板又は粘着型位相差板 |
JPH1020118A (ja) | 1996-07-08 | 1998-01-23 | Sekisui Chem Co Ltd | 粘着型偏光板 |
WO2001037007A1 (fr) | 1999-11-12 | 2001-05-25 | Kaneka Corporation | Film transparent |
JP2001343529A (ja) | 2000-03-30 | 2001-12-14 | Kanegafuchi Chem Ind Co Ltd | 偏光子保護フィルムおよびその製造方法 |
JP2002309212A (ja) * | 2001-04-18 | 2002-10-23 | Nitto Denko Corp | ガラス板用水分散型粘着シートおよび粘着型光学フィルム、液晶表示装置 |
JP2003049148A (ja) * | 2001-08-08 | 2003-02-21 | Nitto Denko Corp | 粘着型光学フィルムおよび液晶表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1995612A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009116103A (ja) * | 2007-11-07 | 2009-05-28 | Sumitomo Chemical Co Ltd | 偏光板 |
CN102388324A (zh) * | 2009-03-27 | 2012-03-21 | 3M创新有限公司 | 具有显示面板的光学组件及其制备和拆卸方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2007248485A (ja) | 2007-09-27 |
KR20090050108A (ko) | 2009-05-19 |
EP1995612A1 (en) | 2008-11-26 |
CN101310202A (zh) | 2008-11-19 |
TWI352107B (ja) | 2011-11-11 |
JP4236273B2 (ja) | 2009-03-11 |
EP1995612A4 (en) | 2010-09-22 |
US8609243B2 (en) | 2013-12-17 |
KR100924667B1 (ko) | 2009-11-03 |
KR101132583B1 (ko) | 2012-04-06 |
KR20080007314A (ko) | 2008-01-18 |
US20090123718A1 (en) | 2009-05-14 |
CN101310202B (zh) | 2010-06-02 |
EP1995612B1 (en) | 2013-11-20 |
TW200801153A (en) | 2008-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007105378A1 (ja) | 粘着型光学フィルム及び画像表示装置 | |
US8331025B2 (en) | Polarizing plate, manufacturing method thereof, optical film and image display | |
TWI393925B (zh) | 抗靜電性黏著型偏光板及其製造方法,液晶面板,及液晶顯示裝置 | |
US8551612B2 (en) | Polarizing plate, manufacturing method thereof, optical film and image display | |
JP4805240B2 (ja) | 粘着型光学フィルムおよび画像表示装置 | |
JP5231158B2 (ja) | 偏光板、光学フィルムおよび画像表示装置 | |
JP4714452B2 (ja) | 帯電防止性粘着型光学フィルム及び画像表示装置 | |
WO2008001601A1 (fr) | Film optique adhésif et dispositif d'affichage d'image | |
WO2006043451A1 (ja) | 帯電防止性光学フィルム、帯電防止性粘着型光学フィルム、それらの製造方法および画像表示装置 | |
WO2007046396A1 (ja) | 粘着型光学フィルムおよびその製造方法 | |
WO2006043449A1 (ja) | 帯電防止性粘着型光学フィルム及び画像表示装置 | |
JP4721368B2 (ja) | 帯電防止性粘着型光学フィルム及び画像表示装置 | |
JP4367704B2 (ja) | 帯電防止性粘着型光学フィルム及び画像表示装置 | |
WO2006059490A1 (ja) | 光学フィルム用粘着剤、光学フィルム用粘着剤層およびその製造方法、粘着型光学フィルム、ならびに画像表示装置 | |
JP2009157352A (ja) | 偏光板、その製造方法、光学フィルムおよび画像表示装置 | |
WO2006080185A1 (ja) | 光学部材用粘着剤組成物、光学部材用粘着剤層、粘着型光学部材、及び画像表示装置 | |
WO2006043448A1 (ja) | 帯電防止性粘着型光学フィルム及び画像表示装置 | |
WO2006003827A1 (ja) | 粘着剤付き光学フィルムおよび画像表示装置 | |
WO2006043450A1 (ja) | 帯電防止性光学フィルム、帯電防止性粘着型光学フィルム、及び画像表示装置 | |
JP5187930B2 (ja) | 粘着剤組成物、粘着剤層、およびその製造方法 | |
WO2006098138A1 (ja) | 光学用粘着剤、粘着型光学フィルム、画像表示装置および粘着型光学フィルムの剥離方法 | |
JP4870653B2 (ja) | 偏光板、その製造方法、光学フィルムおよび画像表示装置 | |
JP2006232910A (ja) | 光学用粘着剤、粘着剤付き光学フィルムおよび画像表示装置 | |
JP5041532B2 (ja) | 偏光板、光学フィルムおよび画像表示装置 | |
JP2004341155A (ja) | 粘着剤付光学部材、その製造方法および画像表示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780000165.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077022197 Country of ref document: KR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07713681 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007713681 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11993935 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097008548 Country of ref document: KR |