CN1661396A - Antistatic adhering optical film, and image display - Google Patents

Antistatic adhering optical film, and image display Download PDF

Info

Publication number
CN1661396A
CN1661396A CN2005100524648A CN200510052464A CN1661396A CN 1661396 A CN1661396 A CN 1661396A CN 2005100524648 A CN2005100524648 A CN 2005100524648A CN 200510052464 A CN200510052464 A CN 200510052464A CN 1661396 A CN1661396 A CN 1661396A
Authority
CN
China
Prior art keywords
film
antistatic
optical film
polarizer
liquid crystal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2005100524648A
Other languages
Chinese (zh)
Other versions
CN100383561C (en
Inventor
细川敏嗣
佐竹正之
小笠原晶子
白藤文明
井上真一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Denko Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitto Denko Corp filed Critical Nitto Denko Corp
Publication of CN1661396A publication Critical patent/CN1661396A/en
Application granted granted Critical
Publication of CN100383561C publication Critical patent/CN100383561C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G02B5/3041—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 comprising multiple thin layers, e.g. multilayer stacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering

Abstract

The invention provides an antistatic adhesion type optical film in which an antistatic layer and an adhesive layer are laminated in turn on at least one side of an optical film, the adhesive layer is laminated on the antistatic layer through an anchor layer.

Description

Antistatic adhering optical film and image display device
Technical field
The present invention relates to a kind of at optical thin film lamination antistatic backing and adhesive phase and the antistatic adhering optical film that forms successively on the one side at least.And then, the invention still further relates to the image display device of the liquid crystal indicator that uses this antistatic adhering optical film, organic EL display, PDP etc.As above-mentioned optical thin film, the optical thin film that can enumerate polaroid, polarizer, optical compensating film, briliancy raising film and form by their laminations.
With regard to LCD etc., according to its image forming mode, be absolutely necessary in the measure of the both sides of liquid crystal cells configuration polarization element, the measure of taking usually is to paste polaroid.In addition, on liquid crystal display, except polaroid, can also use various optical elements, so that improve the display quality of display.For example, can use the briliancy that enlarges film and be used to improve the display contrast for the angle of visibility that prevents painted polarizer, is used to improve the angle of visibility of LCD to improve film etc.These films are referred to as optical thin film.
These optical thin films will experience transportation and manufacturing process before usually in delivering to consumer's hand, and are injury-free and pollute in these operations for the surface that guarantees optical thin film, generally are adhesive surface protective films in its surface.After on this surface protective film being pasted surfaces such as LCD, often need it is peeled off, and after once peeling off, often will paste same again once again or other surface protective film.And, when being peeled off, this surface protective film can produce static, owing to causing the circuit of LCD screen etc., the effect of this static is damaged, and this is the problem that exists.Also exist in addition the inner array element of LCD screen is produced harmful effect and and then the orientation of liquid crystal produced dysgenic problem.In addition, be not only when protective film is peeled off this problem can take place, and, according to manufacturing process or consumer's using method, because the mutual friction of optical thin film also same problem can take place.In order to address this problem, the someone has proposed the scheme of giving static electricity resistance to the optical thin film of polaroid etc.For example, a kind of optical thin film that transparency conducting layer is set on the optical thin film that has antistatic backing that antistatic backing is set on the surface of optical thin film, one or both sides at optical thin film is disclosed.
On the other hand, in the time of on the surface that optical thin film is pasted liquid crystal cells, to use bonding agent usually.In addition, with optical thin film and liquid crystal cells or between optical thin film, carry out when bonding,, use bonding agent to carry out driving fit usually at various different materials in order to reduce the loss of light.In the case, have the advantage that does not need drying process also can make optical thin film strong bond etc., therefore, use those on a side of optical thin film, to set in advance the adhesive optical film of bonding agent usually as adhesive phase.
When using this adhesive optical film, need be cut to the size of display.During operation in said use operation, the end of adhesive optical film (cut-out portion) just often causes that bonding agent comes off from this part in case contact with people or device.Like this, when the adhesive optical film that bonding agent come off pasted on the liquid crystal cells, the part of this bonding agent that come off just can not driving fit, and therefore, this part will reflect light, thereby forms the defective that shows, this is the problem that exists.Particularly recently, the frame of display is by becoming stenosis, even the defective that produces in this end also can cause display quality significantly to reduce.In addition, after pasting this adhesive optical film on the liquid crystal display, because foreign matter such as sneaks at occasion former thereby that cause optical thin film to be peeled off from screen board, people always wish not to be called as the fault of adhesive residue in screen board one side (the just so-called residual phenomena of sticking with paste), wish that just its re-workability is good.
For this adherent zone optical thin film, the someone has proposed to give to it scheme of static electricity resistance.For example, the someone has proposed to give static electricity resistance by containing electroconductive particle in the antiglare layer that makes the polaroid surface to antiglare layer, forms the scheme (patent documentation 1) of adhesive phase simultaneously at its reverse side.Yet according to the method for patent documentation 1, it is difficult keeping its characteristic as antiglare layer, its deficient in stability.In addition, the occasion of antistatic backing is set on adhesive optical film, because the orientation that adds the liquid crystal cells that is caused of the voltage that causes in screen board inside is bad, preferably between optical thin film and adhesive phase, antistatic backing is set in order to overcome.In addition, for the antistatic adhering optical film that antistatic backing is set, also there are bonding agent is damaged and paste is residual problem or the problem aspect re-workability between optical thin film and adhesive phase.In addition, as the method for giving electrostatic-proof function to optical thin film, the someone has proposed to make the method (patent documentation 2) that contains conductive material in the adhesive phase.Yet according to the method for patent documentation 2, the characteristic that keep as adhesive phase is difficult, its deficient in stability.
(patent documentation 1) spy opens flat 10-2395251 communique.
(patent documentation 2) spy opens the 2003-294951 communique
Summary of the invention
The purpose of this invention is to provide a kind of damaged and re-workability good anti-static adhering optical film of bonding agent that is difficult to cause, it is by being the antistatic adhering optical film that forms of lamination antistatic backing and adhesive phase successively at least one side at optical thin film.And then, the purpose of this invention is to provide a kind of image display device that uses this anti-static type optical thin film.
Present inventors further investigate in order to address this problem, and found that following antistatic adhering optical film, have so far just finished the present invention.
That is, the present invention relates to a kind of at least one side of optical thin film lamination antistatic backing, anchor layer and adhesive phase and the antistatic adhering optical film that forms successively.
Can think, cause bonding agent to come off and be that adaptation at the interface between antistatic backing and adhesive phase is low making liquid crystal display regeneration that the main cause of adhesive residue be arranged the time, therefore, in this antistatic adhering optical film of the present invention, improve its adaptation by between antistatic backing and adhesive phase, forming anchor layer.Like this with regard to can big spoke degree ground being reduced in when handling antistatic adhering optical film since to the part of the caused bonding agent of contact of film end come off or when liquid crystal display is regenerated the paste of generation residual, and can improve the operability of antistatic adhering optical film.In addition, owing between optical thin film and adhesive phase, antistatic backing is set, therefore its anti-static effect is good, thereby can suppress because the peeling off caused static or because the caused static of friction of optical thin film, and can prevent that the orientation of the breakage of circuit or liquid crystal is bad of surface film.In addition, optical thin film and adhesive phase can be kept their characteristics separately, and stability is also good.
In this antistatic adhering optical film, anchor layer preferably contains polymkeric substance.In addition, the polymkeric substance of anchor layer preferably has functional group.In addition, the official that polymkeric substance had in the anchor layer has group preferably amino.As the polymkeric substance in the anchor layer, preferably use those to have the polymkeric substance of polyethyleneimine: amine structure.
In addition, in this antistatic adhering optical film, adhesive phase preferably contains a kind of like this base polymer, and this base polymer has a kind of functional group that can react with the functional group that polymkeric substance had in the anchor layer.Because the reactivity between the functional group of the base polymer in the adhesive phase and the functional group of the polymkeric substance in the anchor layer, so can improve the adaptation of adhesive phase and anchor layer further.The functional group that polymerizable raw material had in adhesive phase is carboxyl preferably.From considering, preferably use carboxyl with the viewpoint of amino reaction.In addition, adhesive phase is preferably formed by acrylic adhesives.
In addition, in antistatic adhering optical film, antistatic backing preferably contains electric conductive polymer.Electric conductive polymer in the antistatic backing preferably has functional group, and the functional group that preferably can react with the functional group that polymkeric substance had in the anchor layer of the functional group that electric conductive polymer had.Because the reactivity of these functional groups, thereby can improve the adaptation of antistatic backing and anchor layer further.
In addition, the present invention relates to a kind of image display device that uses this antistatic adhering optical film.Antistatic adhering optical film of the present invention can be according to the various user modes of the image display device of liquid crystal indicator etc., only use a slice film or several pieces film combinations are used.
Concise and to the point description of drawings
Fig. 1 is an example of the sectional view of antistatic adhering optical film of the present invention.
(to the explanation of symbol)
The 1-optical thin film
The 2-antistatic backing
The 3-adhesive phase
The 4-anchor layer
Embodiment
As shown in Figure 1, antistatic adhering optical film of the present invention is to carry out lamination according to the order of antistatic backing 2, adhesive phase 3 on a side of optical thin film 1, and has anchor layer 4 between adhesive phase 3 and antistatic backing 2.Should illustrate, though shown in Figure 1 be on a side of optical thin film 1, adhesive phase 3 to be set, also can on the both sides of optical thin film, have adhesive phase 3.In addition, with regard to the adhesive phase 3 of opposite side, also can have antistatic backing 2, and can on antistatic backing 2, come lamination adhesive layer 3 by anchor layer 4.
As the antistatic agent of the antistatic backing 2 that is used to form antistatic adhering optical film of the present invention, can use ionic surfactant class, electric conductive polymer and metal oxide etc. can give the material of static electricity resistance.
For example, as ionic surfactant, can enumerate: the various surfactants of cationic (for example quaternary, phosphonium salt type, sulfonium salt type etc.), anionic species (carboxylic acid type, sulfonate type, sulfate type, phosphate type, phosphite type etc.), zwitterionic classes (sulfobetaines type, alkyl betaine-type, alkyl imidazole betaine type etc.) or nonionic class (polyol derivative, beta-schardinger dextrin-bag connect compound, sorbitol anhydride fatty acid monoester diester, poly-cyclic ether derivative, amine oxide etc.).
As electric conductive polymer, can enumerate the polymkeric substance of polyaniline compound, polythiophene class, polypyrrole class, polyquinoxaline class etc.
In addition, as metal oxide, can enumerate tin oxide class, antimony oxide class, indium oxide class, Zinc-oxide-based etc.Wherein preferred tin oxide class.As the tin oxide compounds, for example, except tin oxide, can also enumerate the compound of antimony-doped tin oxide, indium doped stannum oxide, aluminium doped stannum oxide, tungsten doped stannum oxide, titanium dioxide-cerium oxide-tin oxide, the compound of titanium dioxide-tin oxide etc.
In addition, as the antistatic agent beyond this, can illustration acetylene carbon black, cooking stove carbon black, native graphite, Delanium, titanium is black or cationic (quaternary ammonium salt etc.), amphoteric ion type (betaine compound etc.), anionic (sulfonate etc.) or nonionic (glycerine etc.) have the homopolymer of monomer of ionic conductivity group or this monomer and other monomers multipolymer, have the polymkeric substance that has ionic conductivity from those polymkeric substance etc. with position of the acrylate of quaternary ammonium salt group or methacrylate; Utilize the permanent antistatic agent of alloying types such as the hydrophilic polymer of tygon-methacrylate copolymer etc. and acrylic resin.
In these anti-static agents, consider from the viewpoint of optical characteristics, outward appearance, anti-static effect and the anti-static effect stability when being heated and during humidification, preferably use electric conductive polymer.Especially preferably use the water-soluble conducting polymkeric substance or the water dispersible electric conductive polymer of polyaniline, polythiophene etc.This is to be formulated in the coating fluid that uses when forming antistatic backing because water-soluble conducting polymkeric substance or water dispersible electric conductive polymer can be used as the form of aqueous solution or aqueous dispersions, this coating fluid needn't use the organic solvent of non-aqueous system, can suppress because the optical thin film base material that causes of this organic solvent rotten.Aqueous solution or the aqueous dispersions aqueous solvent except that can containing water should be described.For example can enumerate the alcohols of methyl alcohol, ethanol, n-propanol, isopropyl alcohol, normal butyl alcohol, isobutyl alcohol, sec-butyl alcohol, the tert-butyl alcohol, n-amyl alcohol, isoamylol, sec-amyl alcohol, tert-pentyl alcohol, 1-ethyl-1-propyl alcohol, 2-methyl-1-butene alcohol, n-hexyl alcohol, cyclohexanol etc.
The polystyrene conversion weight-average molecular weight of the polyaniline of this water-soluble or water dispersible is preferably below 500000, more preferably below 300000.The polystyrene conversion weight-average molecular weight of the polythiophene of water-soluble or water dispersible is preferably below 400000, more preferably below 300000.When weight-average molecular weight surpasses this value, have and to satisfy this tendency water-soluble or water dispersible, when using such polymkeric substance to prepare coating fluid (aqueous solution or aqueous dispersions), because the solid constituent of remaining polymkeric substance in this coating fluid, perhaps make the coating fluid high viscosityization and be difficult to form the antistatic backing of uniform film thickness.
So-called water-soluble conducting polymkeric substance water-soluble is meant that solubleness in 100g water is more than 5g.The solubleness of this water-soluble conducting polymkeric substance in 100g water is preferably 20-30g.So-called water dispersible electric conductive polymer is meant that the electric conductive polymer of polyaniline, polythiophene etc. is difficult to finely particulate and is scattered in polymkeric substance in the water, not only the solution viscosity of aqueous dispersions little, the coating of filming is carried out easily, and the homogeneity of coating layer is good.Herein, as atomic particle diameter, consider from the homogeneity of antistatic backing, preferably below 1 μ m.
In addition, the preferred possess hydrophilic property functional group in its molecule of the water-soluble conducting polymkeric substance of above-mentioned polyaniline, polythiophene etc. or water dispersible electric conductive polymer.As the hydrophilic functional group, can enumerate sulfo group, amino, acylamino-, imino group, quaternary ammonium salt base, hydroxyl, sulfydryl, diazanyl, carboxyl, sulfate group, phosphate-based or their salt etc.Because possess hydrophilic property functional group in molecule is therefore soluble in water easily, also is scattered in the water with finely particulate easily, thereby can easily be mixed with this water-soluble conducting polymkeric substance or water dispersible electric conductive polymer.
As the example of water-soluble conducting polymkeric substance commercially available product, can enumerate polyaniline sulfonic acid (Mitsubishi Rayon corporate system, the weight-average molecular weight of polystyrene conversion are 150000) etc.As the example of water dispersible conducting polymer commercially available product, can enumerate polythiophene class electric conductive polymer (Nagasechemtex corporate system, commodity are called デ Na ト ロ Application シ リ one ズ) etc.
In addition, as the formation material of antistatic backing, can be above-mentioned antistatic agent, simultaneously, for the tunicle that improves antistatic agent form property and with the purpose of the adaptation of optical thin film, also can be to wherein adding the bond composition.When antistatic agent is the occasion of the water-based material of water-soluble conducting polymkeric substance or water dispersible electric conductive polymer, can use the bond composition of water-soluble or water dispersible.As the example of adhesive ingredients, can enumerate polyurethanes resin, polyester resin, acrylic resin, polyethers resin, cellulosic resin, polyvinyl alcohol resin, epoxy resin, polyvinylpyrrolidone, polystyrene resins, polyglycol, pentaerythrite etc.Special optimization polyurethane resinoid, polyester resin, acrylic resin.Also can in these adhesive ingredients one or more suitably be used in combination according to the purposes of bond.The use amount of adhesive ingredients is according to the difference of antistatic agent kind and different, but in the ordinary course of things, with respect to antistatic agent 100 weight portions, the use amount of bond composition preferably below 200 weight portions, 5-100 weight portion more preferably.
The surface resistivity of this antistatic backing is preferably 1 * 10 12Below Ω/, more preferably 1 * 10 11Below Ω/.When surface resistivity surpasses 1 * 10 12During Ω/, electrostatic-proof function is abundant inadequately, and peeling off of surface protection film taken place easily, perhaps is with static owing to the friction of optical thin film produces, and tends to cause that the circuit orientation destroyed or liquid crystal of liquid crystal cells is bad.
Bonding agent as the adhesive phase 3 that is used to form antistatic adhering optical film of the present invention, be not particularly limited, for example can from the polymkeric substance of acrylic polymers, silicone polymkeric substance, polyester, polyurethane, polyamide, polyethers, fluorine class or rubber-like etc., select aptly so that it is used as base polymer.Especially preferably use those optical transparences good, and show the adhesion characteristic of suitable wetting state, coherency and cementability, and all good bonding agents such as weatherability or thermotolerance.Bonding agent as showing such feature preferably uses acrylic adhesives.
Acrylic adhesives be with a kind of monomeric unit by (methyl) alkyl acrylate as the acrylic polymers of main framing as base polymer.Should illustrate that (methyl) acrylate can be acrylate and/or methacrylate, (methyl) of the present invention also has same implication.The average carbon atom number of alkyl that is used to constitute (methyl) alkyl acrylate of acrylic polymers main framing is about 1-12, concrete example as (methyl) alkyl acrylate, can illustration (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) butyl acrylate, (methyl) 2-EHA etc., they may be used singly or in combin.Wherein, preferably the carbon number in the alkyl is (methyl) alkyl acrylate of 1-9.
In order to improve cementability or stable on heating purpose, can in this acrylic polymers, import more than one various monomers by copolymerization.As the concrete example of such copolymerization monomer, for example can enumerate: (methyl) acrylic acid 2-hydroxyl ethyl ester, (methyl) acrylic acid 2-hydroxypropyl acrylate, (methyl) acrylic acid 4-hydroxy butyl ester, the own ester of (methyl) acrylic acid 6-hydroxyl, (methyl) acrylic acid 8-hydroxyl monooctyl ester, (methyl) acrylic acid 10-hydroxyl ester in the last of the ten Heavenly stems, (methyl) acrylic acid 12-hydroxyl Lauryl Ester or methacrylic acid (4-methylol cyclohexyl) etc. contain the monomer of hydroxyl; (methyl) acrylic acid, (methyl) acrylic acid carboxylic ethyl ester, (methyl) acrylic acid carboxylic pentyl ester, itaconic acid, maleic acid, fumaric acid, crotonic acid etc. contain the monomer of carboxyl; Maleic anhydride, itaconic anhydride etc. contain the monomer of anhydride group; Acrylic acid caprolactone addition product; Styrene sulfonic acid or allyl sulphonic acid, 2-(methyl) acrylamide-2-methyl propane sulfonic acid, (methyl) acrylamide propane sulfonic acid, (methyl) acrylic acid sulfopropyl ester, (methyl) acryloxy naphthalene sulfonic acids etc. contain sulfonic monomer; 2-hydroxyethyl acryloyl group phosphate etc. has the monomer of phosphate etc.
In addition, example as the monomer that is used for modification, can enumerate: (methyl) acrylamide, N, (N-replacement) amide-type monomer of N-dimethyl (methyl) acrylamide, N-butyl (methyl) acrylamide or N-methylol (methyl) acrylamide, N-hydroxymethyl-propane (methyl) acrylamide etc.; (methyl) acrylic acid ammonia ethyl ester, (methyl) acrylic acid N, (methyl) acrylic acid alkyl aminoalkyl esters monomer of N-dimethylamino ethyl ester, (methyl) acrylic acid tert-butyl group ammonia ethyl ester etc.; (methyl) alkoxyalkyl acrylate class monomer of (methyl) acrylic acid methoxyl ethyl ester, (methyl) acrylic acid ethoxy ethyl ester etc.; The succinimide class monomer of N-(methyl) acryloyl-oxy methylene succinimide or N-(methyl) acryloyl-6-oxygen base hexa-methylene succinimide, N-(methyl) acryloyl-8-oxygen base eight methylene succinimides, N-acryloyl morpholine etc. etc.
In addition, also can use the vinyl monomer of vinyl-acetic ester, vinyl propionate base ester, N-vinyl pyrrolidone, methyl ethylene pyrrolidone, vinylpyridine, vinyl piperidones, vinyl pyrimidine, vinyl piperazine, vinylpyrazine, vinyl pyrrole, vinyl imidazole, Yi Xi Ji oxazole, vinyl morpholine, N-vinyl carboxylic acid amide-type, styrene, α-Jia Jibenyixi, N-caprolactam etc.; The cyanoacrylate monomer of vinyl cyanide, methacrylonitrile etc.; (methyl) glycidyl acrylate etc. contains the acrylic monomer of epoxy radicals; The glycols acrylate monomer of (methyl) polyalkylene glycol acrylate, (methyl) acrylic acid polypropylene glycol, (methyl) acrylic acid methoxyl ethylene glycol, (methyl) acrylic acid methoxyl polypropylene glycol etc.; The acrylic ester monomer of (methyl) tetrahydrofurfuryl acrylate, fluoro (methyl) acrylate, silicone (methyl) acrylate or acrylic acid 2-methoxyl ethyl ester etc. etc.
Wherein, as the purposes of optical thin film, from consider the preferred monomer that contains carboxyls such as acrylic acid that uses with the cementability of liquid crystal cells, the viewpoint of adhesion durability.
In acrylic polymers, the ratio of this comonomer is not particularly limited, and still, the ratio meter is preferably about 0.1-10% by weight.
The mean molecular weight of acrylic polymers is not particularly limited, but its weight-average molecular weight is preferably about 300,000-2,500,000.This acrylic polymers can be made by various known method, for example, can select to use the radical polymerization of mass polymerization, solution polymerization process, suspension polymerization etc. aptly.As the initiating agent of free radical polymerization, can use various known initiating agents such as even oxygen class, peroxide.Temperature of reaction is generally about 50-80 ℃, and the reaction time is 1-8 hour.In addition, in this manufacture method, be preferably solution polymerization process,, generally can use ethyl acetate, toluene etc. as the solvent of acrylic polymers.Solution concentration is generally about 20-80 weight %.
As the base polymer of rubber adhesive, for example can enumerate: natural rubber, isoprenoid rubber, styrene-butadiene class rubber, reclaimed rubber, polyisobutylene class rubber and styrene-isoprene-phenylethene class rubber, s-B-S class rubber etc.As the base polymer of silicone bonding agent, for example can enumerate dimethyl polysiloxane, diphenyl polysiloxane etc., also can use and in these base polymers, import the polymkeric substance that forms after the functional groups such as carboxyl.
In addition, preferred above-mentioned bonding agent is the adhesive composition that contains crosslinking chemical.As the polyfunctional compound who may be fitted in the bonding agent, can enumerate organic class crosslinking chemical or multi-functional metallo-chelate.As organic crosslinking agent, can enumerate epoxies crosslinking chemical, isocyanates crosslinking chemical, imines class crosslinking chemical.As organic class crosslinking chemical, preferably isocyanates crosslinking chemical.Multi-functional metallo-chelate is to be undertaken that covalent bond or coordination combine and the product that generates by polyvalent metal and organic compound.As polyvalent metal atom, can enumerate Al, Cr, Zr, Co, Cu, Fe, Ni, V, Zn, In, Ca, Mg, Mn, Y, Ce, Sr, Ba, Mo, La, Sn, Ti etc.As the atom in covalent bond or complex bound organic compound, can enumerate oxygen atom etc., as organic compound, can enumerate Arrcostab, alcoholic compound, carboxylic acid compound, ether compound, ketonic compound etc.
The base polymer of acrylic polymers etc. does not have particular determination with the ratio that cooperates of crosslinking chemical, but, usually with respect to base polymer (Gu shape branch) 100 weight portions, crosslinking chemical (Gu shape branch) is preferably about the 0.01-10 weight portion, more preferably about the 0.1-5 weight portion.
And then, in this bonding agent, as required, can use cohesive imparting agent, plastifier aptly, contain glass fibre, filling agent of glass microballoon, metal powder, other inorganic powders etc., pigment, colorant, filling agent, antioxidant, ultraviolet light absorber, silane coupling agent etc., in addition, in the scope that does not deviate from the object of the invention, also can use various adjuvants aptly.In addition, also can make it become the diffusible adhesive phase of display light etc. by containing particulate.
In antistatic adhering optical film of the present invention, the material that is used to form the anchor layer 4 that is provided with between adhesive phase 3 and antistatic backing 2 there is not particular determination, the two all shows good adhesive property to adhesive phase 3 and antistatic backing 2 but preferably use those, and can form the material of the good tunicle of cohesiveness.In order to show such character, can use colloidal sol, silicon dioxide gel of various polymer class, metal oxide etc.Wherein, especially preferably use polymer class.
As this polymer class, can enumerate polyurethanes resin, polyester resin, in molecule, contain amino polymer class.The use form of polymer class can be any in the solvable type of solvent, water-dispersion type, the water lysotype.As water-dispersion type, the product that can use those to utilize emulsifying agent to make the various resin emulsionizations of polyurethane, polyester etc. and generate perhaps uses it after becoming self emulsion etc. by anionic group, cation group or the non-ionic group that imports water dispersible in this resin.
Preferably those have the polymkeric substance of the functional group that can react with functional group that base polymer had in the adhesive phase and/or the functional group that electric conductive polymer had in the antistatic backing to above-mentioned polymer class.As above-mentioned polymer class, preferably in its molecule, contain amino polymer class.Special preferably the use with the monomer that contains carboxyl as the acrylic polymers of the copolymerization composition occasion as the base polymer in the adhesive phase perhaps used the water-soluble or water dispersible electric conductive polymer occasion as antistatic backing.The polymkeric substance that in its molecule, contains amino that in anchor layer, uses, because the amino in its molecule can react with carboxyl in the bonding agent or with polar group (functional group) in water-soluble or the water dispersible electric conductive polymer, perhaps show the interaction of ionic interaction etc., therefore can guarantee good adaptation.
As contain amino polymer class in molecule, the dimethylamino ethyl acrylate of can enumerate polyethyleneimine, polyallylamine, polyvinylamine, polyvinyl pyridine, polyvinylpyrrolidine, representing with the copolymerization monomer of this acrylic adhesives etc. contains amino polymer of monomers etc.Wherein, polyethyleneimine preferably.
Be not particularly limited for polyethyleneimine, various products all can use.The weight-average molecular weight of polyethyleneimine is not particularly limited, but is generally 100-100 about ten thousand.For example, as the example of polyethyleneimine commercially available product, can enumerate Epomin SP series (SP-003, SP006, SP012, SP018, SP103, SP110, SP200 etc.), Epomin P-1000 of society of Nippon Shokubai Co., Ltd system etc.Wherein, Epomin P-1000 preferably.
Polyethyleneimine has polyethylene structure and gets final product, and for example can enumerate the aziridine addition product and/or the polyethyleneimine addition product of polyacrylate.Polyacrylate can obtain by (methyl) alkyl acrylate of base polymer (acrylic polymers) that is used to constitute this illustrative acrylic adhesives and copolymerization monomer thereof are carried out emulsion polymerization according to conventional method.As copolymerization monomer, can use those to have the monomer of the functional groups such as carboxyl that can react with aziridine etc.Usage ratio with monomer of functional group such as carboxyl can utilize the ratio of the aziridine that participates in reaction etc. to adjust aptly.In addition, as copolymerization monomer, as mentioned above, preferably use styrene monomer.In addition, by make carboxyl in the acrylate etc. with by the synthetic polyethyleneimine reaction of other approach, also can make polyethyleneimine become the addition product of grafting.For example, as the example of commercially available product, can enumerate the Polyment NK-380 of society of Nippon Shokubai Co., Ltd system.
Can also use the aziridine addition product of acrylic polymer emulsions and/or polyethyleneimine addition product etc. in addition.For example, as the example of commercially available product, can enumerate the Polyment SK-1000 of society of Nippon Shokubai Co., Ltd system.
As polyallylamine, be not particularly limited, for example can enumerate: the polyalkylenepolyamines of the propylamine compound of diallylamine hydrochloride-sulphuric dioxide multipolymer, diallyl methylamine hydrochloride multipolymer, polyallylamine hydrochloride, polyallylamine etc., diethylene triamine etc. and the condensation product of dicarboxylic acid, with and addition product of surfactant alkanol, polyvinylamine etc.In polyallylamine water soluble/alcohol, be preferred therefore.The weight-average molecular weight of polyallylamine is not particularly limited, but is preferably about 10000-100000.
In addition, when forming anchor layer, except use contains amino polymer class, can also carry out crosslinkedly with the compound that contains amino polymer class reaction, can improve the intensity of anchor layer like this by mixing.As can with the compound that contains amino polymer class reaction, can the illustration epoxy compound etc.
As the optical thin film 1 that can in antistatic adhering optical film of the present invention, use, can use those optical thin films that when forming the image display device of liquid crystal indicator etc., uses, its kind is not particularly limited.For example, as optical thin film, can enumerate polaroid.As polaroid, generally can use the polaroid that on the one or both sides of polarizer, has transparent protective film.
Polarizer is not had particular determination, can use various polarizers.As polarizer, for example can enumerate: by on the hydrophilic macromolecule film of polyvinyl alcohol film, part formalizing polyvinyl alcohol film, the partly-hydrolysed film of ethylene vinyl acetate copolymer class etc., adsorbing the dichroic substance of iodine or dichroic dye and carrying out the film that uniaxial tension forms.Polyalkenes oriented films such as the desalination acid treatment thing of the processed thing of polyvinyl alcohol (PVA) or Polyvinylchloride etc.Wherein, preferably include the polarizer of the dichroic substance of polyvinyl alcohol film and iodine etc.Thickness to these polarizers is not particularly limited, and is generally about 5-80 μ m.
By with iodine with polyvinyl alcohol film dyeing and carry out the polarizer that uniaxial tension forms, can by in the aqueous solution that for example polyvinyl alcohol (PVA) be impregnated in iodine with its dyeing, and its 3-7 that is stretched to original length doubly made.As required, also can be impregnated in the aqueous solution of the potassium iodide that can contain boric acid or zinc sulfate, zinc chloride etc. etc.And then, as required, dyeing before with polyvinyl alcohol thin film dipped in water to wash.By washing the polyvinyl alcohol film with water, in addition dirt on the polyvinyl alcohol film surface or antiblocking agent flush away, also can be had the effect that the swelling that can prevent owing to the polyvinyl alcohol film causes non-uniform phenomenons such as dye speck.Stretch and preferably after with iodine staining, carry out,, also can after stretching, use iodine staining more in addition on one side also can stretch by an Edge Coloring.Also can in the aqueous solution of boric acid or potassium iodide etc. or water-bath, stretch.
As the material that is used on these polarizer one or both sides forming transparent protective film, preferably in the equal excellent material of performance of aspects such as the transparency, physical strength, thermal stability, moisture barrier, isotropy.For example can enumerate: the polyester polymer of polyethylene terephthalate, PEN etc.; The cellulosic polymer of diacetyl cellulose or tri acetyl cellulose etc.; Acrylic polymerss such as polymethylmethacrylate; The styrenic polymer of polystyrene or acrylonitrile styrene copolymer (AS resin) etc.; Polycarbonate polymer etc.In addition, as the example of the polymkeric substance that is used to form this transparent protective film, also can enumerate: the polyolefin polymers of tygon, polypropylene, polyolefin, ethylene propylene copolymer etc. with ring texture or norborene structure; The polyvinyl chloride-base polymkeric substance; The acylamide polymer of nylon or aromatic polyamide etc.; The acid imide polymkeric substance; The sulfone base polymer; The polyether sulfone polymkeric substance; The polyether etherketone base polymer; The polyphenylene sulfide base polymer; Vinyl alcohol polymer; The vinylidene chloride base polymer; The vinyl butyral base polymer; The allylate base polymer; The polyoxymethylene base polymer; The admixture of epoxide polymer or this polymkeric substance etc.Transparent protective film also can be used as the heat curing-type of acrylic compounds, polyurethanes, acroleic acid polyurethane class, epoxies, silicone etc., the resin solidification layer of ultraviolet hardening forms.
In addition, open the thin polymer film of record in the 2001-343529 communique (WO 01/37007) about the spy, for example can enumerate contain (A) have on the side chain replace and/thermoplastic resin of the acylimino of non-replacement and (B) on side chain, have replace and/resin combination of the thermoplastic resin of non-substituted-phenyl and nitro.As concrete example, can enumerate and contain the alternating copolymer that forms by isobutylene and N-methyl maleimide and the resin combination film of acrylonitrile styrene copolymer.As film, the film that can use mixing extrudate by resin combination etc. to make.
The thickness of protective film can determine aptly, still, considers from the viewpoint of the operability of intensity or the property handled etc., film etc., is generally about 1-500 μ m.Be preferably 5-200 μ m especially.
As protective film, consider from the viewpoint of polarized light property or permanance etc., preferably the cellulosic polymer of tri acetyl cellulose.Tri acetyl cellulose film especially preferably.Should illustrate, when the occasion that protective film all is set in the both sides of polarizer, can be at table, the both sides, lining all use the protective film of being made by same polymeric material, also can use the protective film of making by different polymeric material etc.Usually carry out driving fit by the water-based cement between above-mentioned polarizer and the protective film.As the water-based cement, can illustration isocyanates cement, polyvinyl alcohol cement, gelatin class cement, ethylene latex class, water-based polyurethane, waterborne polyester class etc.
On the one side of not pasting polarizer on this transparent protective film, can form strengthened coat, or apply that adhesion is handled, is used to prevent to antireflection or in order to spread and even anti-reflective processing.
Apply purpose that strengthened coat handles and be in order to prevent the surperficial damaged of polaroid, for example the mode of the good curing tunicle of the hardness that can be brought by suitable ultraviolet curing resin such as acrylic compounds, silicone by additional one deck on the surface of transparent protective film or lubricating property waits and forms strengthened coat.Apply purpose that antireflection handles and be in order to prevent that external light is polarized the surface reflection of sheet, this purpose can reach by the method that was used to form antireflection film etc. in the past.In addition, the purpose of anti processing is in order to stick together between the adjoining course that prevents film and other adjacent materials.
In addition; the purpose that applies the counnter attack optical processing is to prevent from owing to external light is polarized obstruction that the surface reflection of sheet causes polaroid to be seen through the identification of light, for example the structure that can put the processing mode that makes surface roughening in order or cooperate suitable mode such as transparent atomic mode to give micro concavo-convex to the surface of transparent protective film by sandblast or embossing.As the particulate that is used to form this surface micro concavo-convex structure, can use and for example contain the mineral-type particulate that often have electric conductivity of mean grain size, contain the transparent particulate of organic based fine particles (comprising microballon) etc. of crosslinked or uncrosslinked polymkeric substance etc. as the silicon dioxide of 0.5-50 μ m, aluminium oxide, titania, zirconia, tin oxide, indium oxide, cadmium oxide, antimony oxide etc.In the occasion that forms surperficial micro concavo-convex structure, with respect to transparent resin 100 weight portions that form surperficial micro concavo-convex structure, atomic use amount is generally about the 2-50 weight portion, is preferably the 5-25 weight portion.Anti-reflector layer preferably is to be used to make polaroid to see through the diffusion layer (vision expanded functionality etc.) that light spreads and make expansions such as vision simultaneously.
Should illustrate, above-mentioned anti-reflection layer, antiblocking layers, diffusion layer or anti-reflector layer etc. can be arranged on transparent protective film originally on one's body, in addition, also its optical layers as other purposes can be provided with dividually with transparent protective film.
In addition, as optical thin film, for example can enumerate reflecting plate or anti-transmitting plate, polarizer (wavelength plate that contains 1/2 wavelength plate and 1/4 wavelength plate etc.), vision compensation film, briliancy and improve the film that becomes certain optical layers that film etc. is used to form liquid crystal indicator etc.These films can be individually use as optical thin film, in addition, and also can be in laminating layer on this polaroid or two-layer above use when reality is used.
Special preferably on the polaroid in addition lamination reflecting plate or semi-penetration plate and the reflection type polarizer that forms or semi-transmission type polaroid, on the polaroid in addition lamination polarizer and the ellipsoidal polarizing plate that forms or circular polarizing disk, on the polaroid in addition lamination vision compensation film and the wide visual angle polaroid that forms or on polaroid in addition the lamination briliancy improve film and the polaroid that forms.
Reflection type polarizer is provided with the reflection horizon and forms on polaroid, therefore it can be used to form a kind of reflection-type liquid-crystal display device that shows by the incident light that reflects from observer's one side (demonstration side) etc., its advantage is to omit the light source of built-in grade backlight, thereby reaches the slimming of liquid crystal indicator easily.The formation of reflection type polarizer can be as required carried out according to a kind of suitable modes such as mode of setting up the reflection horizon that comprises metal etc. by protective clear layer etc. on the one side of polaroid.
As the concrete example of reflection type polarizer, can enumerate, as required, paper tinsel by setting up the reflective metal that comprises aluminium etc. on the one side of the transparent protective film of handling through delustering or vapor-deposited film form the polaroid that the reflection horizon obtains etc.Can also enumerate in addition, contain particulate in this transparent protective film and become surperficial micro concavo-convex structure, form the polaroid that has the reflection horizon of micro concavo-convex structure and obtain again in the above by making.Incident light is penetrated and with its diffusion by soaking in the reflection horizon of above-mentioned micro concavo-convex structure, thereby has prevented the directionality of light and the outward appearance of dazzling, and has the advantage that can suppress the light and shade non-uniform phenomenon.In addition, contain atomic protective film and also have when allowing incident light and reflected light thereof see through and it can be spread, thus the advantage of inhibition light and shade non-uniform phenomenon.The reflection horizon of micro concavo-convex structure that is used to reflect the micro concavo-convex structure on transparent protective film surface can form by following method, and for example the suitable way by vacuum evaporation mode, ion plating mode, sputter mode or plating mode etc. directly is attached to metal lip-deep method of protective clear layer etc.
Reflecting plate also can not adopt the mode on the transparent protective film that directly is formed at this polaroid but according to the situation of this transparent membrane the reflection horizon is arranged on the suitable film to form reflection sheet etc. and use is provided.Moreover; the reflection horizon generally includes metal; therefore; its reflecting surface uses under by the state of linings such as transparent protective film or polaroid; to prevent reflectivity reduction owing to oxidation was caused; and, keep the viewpoint of initial stage reflectivity constantly and consider that from the viewpoint of avoiding protective seam is set by other approach this method is favourable from long-term.
In addition, the semi-transmission type polaroid can resemble this by being made into and a kind ofly by the reflection horizon light be reflected, and allows the reflection horizon of the semi-transmission types such as semi-permeable mirror of light transmission to obtain again.The semi-transmission type polaroid is arranged at the inboard of liquid crystal cells usually, when liquid crystal indicator etc. uses in brighter environment, by reflecting display image from the incident light of observing side (demonstration side), and when in darker environment, using, then can form a kind of like this liquid crystal indicator of pattern, this device uses a kind of built-in power that is built in the grade backlight of semi-transmission type polaroid rear side to come display image.That is to say that the energy that the light source that the semi-transmission type polaroid can save on backlight in bright environment etc. uses is even also can be used to form a kind of liquid crystal indicator that can use the pattern of built-in power in a kind of darker environment.
The ellipsoidal polarizing plate or the circular polarizing disk that the following describes other lamination polarizer on polaroid and constitute.In the occasion that linear polarization is changed into elliptical polarized light or rotatory polarization, perhaps elliptical polarized light or rotatory polarization are changed into the occasion of linear polarization, perhaps, all can use polarizer etc. in the occasion of the polarization direction that changes linear polarization.Particularly, perhaps rotatory polarization is transformed into the polarizer of linear polarization, can uses a kind of so-called 1/4 wavelength plate (being also referred to as λ/4 plates) as changing linear polarization into rotatory polarization.And 1/2 wavelength plate (being also referred to as λ/2 plates) uses when changing the polarization direction of linear polarization usually.
Ellipsoidal polarizing plate can compensate (preventing) because painted (blue or green or yellow) that the birefringence of the stream crystal layer of STN Super TN (STN) type liquid crystal indicator causes, and therefore can be used for the occasion of this painted demonstration black and white not etc. effectively.And then, the ellipsoidal polarizing plate that can control three-dimensional refractive index also can compensate (preventing) since produce during from the picture of oblique observation liquid crystal indicator painted, be preferred therefore.Circular polarizing disk can be effectively used to occasion that the tone of the image of the reflection-type liquid-crystal display device of color display is adjusted etc., but also has the function of reflecting of preventing.
As polarizer, can enumerate: film that the oriented film by the macromolecule starting material being carried out single shaft or the biaxial stretch-formed birefringent film that forms, liquid crystal polymer, the oriented layer of supporting liquid crystal polymer on film form etc.The thickness of polarizer also is not particularly limited, but is generally about 20-150 μ m.
As the macromolecule starting material, for example can enumerate: polyvinyl alcohol (PVA), polyvinyl butyral, polymethyl vinyl ether, Poly(Hydroxyethyl Methacrylate), hydroxyethyl cellulose, hydroxypropyl cellulose, methylcellulose, polycarbonate, the polyene propyl ester, polysulfones, polyethylene terephthalate, PEN, polyethersulfone, polyphenylene sulfide, polyphenylene oxide, polyene propyl group sulfone, polyamide, polyimide, polyolefin, Polyvinylchloride, cellulosic polymer, norbornene resin or their two metaclass, the various multipolymers of three metaclass, graft copolymer, admixture etc.These macromolecular materials can wait by stretching and make orientation thing (oriented film).
As liquid crystal polymer, for example can enumerating, those the linearity atomic groups (the former mesogen of liquid crystal) that can give the conjugacy of liquid crystal aligning import to the main chain of polymkeric substance or the various liquid crystal polymers of backbone chain type on the side chain or side chain type etc.As the concrete example of main chain liquid crystalline polymer, can enumerate those and have the structure example that combines with mesogenic group by the interval group part of giving bendability as polyesters liquid-crystalline polymer, dish shape (デ ィ ス コ テ ィ ッ Network) polymkeric substance or cholesteric polymers etc. to the row orientation.Concrete example as the liquid crystal polymer of side chain type, can enumerate by comprising with polysiloxane, polyacrylate, polymethacrylate or poly-malonate as main chain backbone, with the atomic group of conjugacy interval group part, having and comprise and giving to liquid crystal polymer of the former part of liquid crystal of the para-oriented ring shape compound unit of row orientation etc. as side chain.These liquid crystal polymers for example can obtain by friction treatment is carried out on the surface of the film that is formed at polyimide on the glass plate or polyvinyl alcohol (PVA) etc., perhaps on the orientation process face of the film that forms by oblique evaporation monox etc. with the solution expansion of liquid-crystalline polymer, and it is heat-treated carries out.
The purpose of polarizer be for to for example since the caused painted or vision of the birefringence of various wavelength plates or liquid crystal layer compensate, according to application target, polarizer can have suitable phase differential, by with two or more polarizer laminations, optical characteristics that can the control phase difference etc.
In addition, above-mentioned ellipsoidal polarizing plate or reflection-type ellipsoidal polarizing plate can obtain by polaroid or reflection type polarizer and polarizer are carried out lamination according to suitable combination.Said ellipsoidal polarizing plate etc. can by in the process of being combined in of (reflection-type) polaroid and polarizer being made liquid crystal indicator successively lamination form, but, as mentioned above, the product that is made for optical thin films such as ellipsoidal polarizing plate in advance has the function admirable of quality of stability or laminating operation etc., and can improve the advantage of the manufacturing efficient of liquid crystal indicator etc.
The vision compensation film is a kind of film that field-of-view angle is enlarged of being used for, and so just can make, even be not from perpendicular to picture but the direction that slightly favours picture when watching the picture of liquid crystal indicator also can be seen relatively distinctlyer to image.As such vision compensation of phase difference plate, for example comprise the oriented film of polarizer, liquid crystal polymer etc. or on transparent base, supporting the oriented layer of liquid crystal polymer etc. and polarizer of constituting etc.As common polarizer, can use those by carrying out the thin polymer film that uniaxial tension has birefringenct property along the face direction, different therewith, as the polarizer that can be used for the vision compensation film, can use those by carry out the biaxial stretch-formed thin polymer film that forms along the face direction with birefringenct property, perhaps carry out uniaxial tension and also stretch and the refractive index that can control thickness direction that forms and thin polymer film with birefringenct property along thickness direction along the face direction, perhaps resemble and carry out the two directions film that forms etc. that stretches the tilted alignment film.Film as tilted alignment, can enumerate, for example on thin polymer film, paste heat-shrinkable film, under the effect of the convergent force that produces by heating, this thin polymer film is carried out the product that stretch processing and/or shrink process form then, perhaps handle the product that forms etc. by liquid crystal polymer being carried out tilted alignment.Base polymer as polarizer, can use and the same polymkeric substance of polymkeric substance that originally in polarizer one joint, illustrated, also can use those coloring phenomenon that can prevent that when viewing angle changes the phase differential owing to liquid crystal cells causes etc., perhaps can enlarge the suitable polymer blend of angle of visibility with good visibility.
In addition; from in order to consider, preferably use those to comprise that tri acetyl cellulose film, the optical anisotropic layer that particularly comprises the tilted alignment layer of disc-like liquid crystal polymkeric substance supporting the oriented layer of liquid crystal polymer to the viewpoint of wide view angle with good visibility.
Polaroid uses with the inboard position that the polaroid that is fitted with briliancy raising film can be arranged on liquid crystal cells usually.Briliancy improves film and shows such specific character, promptly, it reflects the linear polarization of regulation polarizing axis or the rotatory polarization of prescribed direction by the backlight of liquid crystal indicator etc. or by incidence natural lights such as inboard reflections, and see through other light, therefore, briliancy is improved polaroid that film and polaroid lamination form obtains the light that sees through of regulation polarized condition from the light of light source such as backlight by incident, do not see through simultaneously beyond this regulation polarized condition light and with its reflection.Improved by this briliancy film surface reflection light so that reverse and incides briliancy raising film once more by being arranged at reflection horizon etc. that briliancy improves the film rear side, wherein part or all is as the light of regulation polarized condition and see through, thereby can increase the light that improves film through briliancy, supply with a kind of polarisation of being absorbed by polarizer of being difficult to simultaneously, therefore the light quantity that to be utilized by the demonstration of liquid crystal display image etc. can be increased, thereby briliancy can be improved.That is to say, if do not use briliancy to improve film, then by grade backlight from the inboard of liquid crystal cells the occasion by the polarizer incident light, the light that has with the inconsistent polarization direction of polarizing axis of polarizer is almost all absorbed by polarizer, can not see through polarizer.That is to say according to the difference of used polarizer characteristic and different, have 50% light to be sponged approximately by polarizer, at this moment, but the light quantity that the brilliant image demonstration of feed flow etc. utilize reduce, thereby make the image deepening.And briliancy improves film and does not allow light with the polarization direction that can be absorbed by polarizer incide polarizer but improve film by briliancy it is carried out primary event, then by being arranged on that briliancy improves the reflection horizon etc. of film rear side and inverted, and incide briliancy once more and improve film, these processes are carried out repeatedly, at this moment, only between the two, reflect, the polarization direction of light of counter-rotating become can be by polarizer polarization direction the time polarisation could see through briliancy raising film and supply to polarizer, the image that therefore light of grade backlight can be used for efficiently liquid crystal indicator shows, thereby image is brightened.
Between briliancy raising film and above-mentioned reflection horizon etc., also diffuser plate can be set.Improve the light of the polarized condition of film reflection by briliancy, towards this reflection horizon etc., still, the diffuser plate of setting will spread equably from the light that wherein passes through, and eliminates its polarized condition simultaneously, makes it become non-polarized condition.That is to say, repeat: the light orientating reflex layer of natural light state etc., be reflected by reflection horizon etc., once more by diffuser plate, and incide briliancy once more and improve film.By briliancy improve so be provided with between film and this reflection horizon etc. a kind of have make polarisation revert to the diffuser plate of original natural light, can be when keeping the display frame briliancy, reduce the phenomenon that shows that the drawing luminance nonuniformity is even, thereby even and bright picture can be provided.Can think that by such diffuser plate is set, the multiplicity that initial incident light is reflected increases rightly, and this effect combines with the diffusion function of diffuser plate, thereby can provide evenly and bright display frame.
Improve film as above-mentioned briliancy, can use to show those laminated multi-layer bodies that for example resemble the different film of dielectric multilayer film or refractive index anisotropy and a kind ofly see through the linear polarization of regulation polarizing axis and reflect the film of the characteristic of other light, support the aligned liquid-crystal layer is arranged as the oriented film of cholesteric liquid crystal polymer or on film substrate and the film that forms, show any rotatory polarization of the left-handed or dextrorotation of reflection and see through the suitable films such as film of the characteristic of other light.
Therefore, allow like that to stipulate that at this briliancy of the linear polarization infiltration type of polarizing axis improves in the film, can be directly incident on polaroid by its polarizing axis owing to should see through light, and therefore can suppress to absorb caused loss, thereby can allow light see through efficiently owing to be polarized sheet.On the other hand, briliancy at the rotatory polarization infiltration type resemble the cholesteric improves in the film, light also can be directly incident on polarizer, but consider from the viewpoint that suppresses absorption loss, reenter the mode that is mapped to polaroid after preferably making this rotatory polarization be transformed into linear polarization by polarizer.Should illustrate,, rotatory polarization can be transformed into linear polarization by using 1/4 wavelength plate as polarizer.
In the wide wavelength coverage of visible light wave range etc., has polarizer as 1/4 wavelength plate function, can by for example with the corresponding polarizer that has as 1/4 wavelength plate function of the light light of wavelength 550nm, with the phase separation layer that shows other phase difference characteristics, for example have to wait and obtain as the overlapping mode of the phase separation layer of 1/2 wavelength plate function.Therefore, the polarizer that is disposed between polaroid and the briliancy raising film can comprise by one deck or two-layer above phase separation layer.
In addition, in cholesteric, by the combination of thing layer that reflection wavelength is different and make it become two-layer or stacked structure more than three layers, can obtain a kind of can be at the thing layer of the wide wavelength coverage internal reflection rotatory polarization of visible light wave range, according to this fact, just can obtain the rotatory polarization that in wide wavelength coverage, sees through.
In addition, polaroid also can resemble comprised lamination above-mentioned polarisation divergence type polaroid polaroid and optical layers two-layer or more than three layers.Therefore, also can be the reflection-type ellipsoidal polarizing plate that combines by above-mentioned reflection type polarizer or semi-transmission type polaroid and polarizer or semi-transmission type ellipsoidal polarizing plate etc.
The optical thin film that forms in this optical layers of lamination on the polaroid can form according to the mode of successively each being pressed layer by layer in the manufacture process of liquid crystal indicator etc., but has in the function admirable of aspects such as quality stability and assembling operation and the advantage of efficient that can improve the manufacturing process of liquid crystal indicator etc. by the mode that lamination in advance forms optical thin film.When lamination, can use suitable joint measures such as bonding coat.With above-mentioned polaroid and other optical layers when bonding, the angle that can the optic axis of these thing layers is configured to suit according to desired phase difference characteristics of application target etc.
The following describes the preparation method of antistatic adhering optical film.
With respect to optical thin film 1, use antistatic agent to form antistatic backing 2.When antistatic agent is the occasion of water-soluble conducting polymkeric substance or water dispersible electric conductive polymer, the coating fluid (aqueous solution) of this polymkeric substance can be used the rubbing method of the rolling method, method of spin coating, pipe face rubbing method, fountain type rubbing method (fountain coating), dip coated method, spraying rubbing method etc. of contrary roller rubbing method, woodburytype etc. to be coated with, drying, thereby form antistatic backing.
The thickness of antistatic backing is preferably 5-1000nm.Consider from the viewpoint that optical characteristics is low, the thickness of antistatic backing usually should be below 5000nm, still, and when the thickness of antistatic backing is blocked up, can cause in antistatic backing, causing easily destruction owing to the undercapacity of antistatic backing, often can not obtain sufficient cohesive.Therefore, the thickness of antistatic backing is preferably below 1000nm, more preferably below 500nm, below 200nm.From the viewpoint consideration of guaranteeing cohesive and suppressing to peel off static, the thickness of antistatic backing is preferably more than 5nm, more preferably more than 10nm.On the other hand, consider that from peeling off the electrostatic efficiency aspect thickness of antistatic backing is thick more good more, still, even its thickness surpasses 200nm, its effect is identical when also following with this thickness.Consider that from this point the thickness of antistatic backing is preferably 5-1000nm, more preferably 10-500nm is preferably 10-200nm especially.
When forming antistatic backing 2, can on optical thin film 1, apply activation processing.Activation processing can adopt the whole bag of tricks, for example can adopt corona treatment, low pressure UV processing, plasma treatment etc.When carrying out activation processing, use that to contain the water-soluble conducting polymkeric substance be effectively as the aqueous solution of antistatic agent, the depression of filming that takes place in the time of can being suppressed at this aqueous solution of coating like this.When carrying out activation processing, effective especially when being example polyolefin resin, norbornene resin for optical thin film 1.
Then, on the antistatic backing 2 of the static electricity resistance optical thin film that obtains according to this method, form anchor layer 4.For example, the solution of anchoring compositions such as polyethyleneimine: amine aqueous solution is coated with the rubbing method of rubbing method, dip coated method, spraying rubbing method etc. and dry, thereby on antistatic backing, further forms anchor layer.As the thickness of anchor layer, be preferably the scope of 10-1000nm, more preferably the scope of 50-500nm.When the thickness attenuation of anchor layer, can not have character as a whole, enough intensity can not be shown, thereby often sufficient adaptation can not be obtained.In addition, when the thickness of anchor layer is blocked up, tend to cause the reduction of optical characteristics.
The formation of adhesive phase 3 can be undertaken by the mode of lamination on this anchor layer 4.As the formation method, have no particular limits, for example can enumerate the method that the coat binding agent solution is dried then on anchor layer, come the method for transfer printing etc. by the release sheet that is provided with adhesive phase.The thickness of adhesive phase does not have particular determination, but is preferably about 10-40 μ m.
As the constituent material of release sheet, can enumerate: the film of synthetic resin of paper, tygon, polypropylene, polyethylene terephthalate etc., rubber sheet, paper, cloth, nonwoven fabrics, net sheet, foaming sheet or metal forming, their the suitable slender lobule body of layered product etc.In order to improve, can apply the lift-off processing of the low connectivity of silicone-treated, chain alkyl processing, fluorine processing etc. as required to the surface of release sheet from the fissility of bonding coat 3.
In addition, on each layer of the optical thin film of antistatic adhering optical film of the present invention or adhesive phase etc., also can wait to make it have ultraviolet absorption ability etc. by the mode of using the ultraviolet light absorber of salicylate compounds or methyl benzoate compounds, benzotriazole compound or cyanoacrylate compound, nickel complex salt compounds etc. for example to handle.
Antistatic adhering optical film of the present invention can preferably be used for forming the various image display devices of liquid crystal indicator etc.The formation of liquid crystal indicator can be carried out according to the method for routine.That is to say, in the ordinary course of things, liquid crystal indicator can be by with liquid crystal cells and antistatic adhering optical film and assemble aptly with the component parts of illuminator etc. as required, loading onto driving circuit then forms, but in the present invention, except using optical thin film this point of the present invention, all the other do not have particular determination, can carry out according to the method for routine.As liquid crystal cells, can use for example liquid crystal cells of any pattern such as TN type or STN type, π type.
Can be formed on the liquid crystal indicator of configuration antistatic adhering optical film on the one or both sides of liquid crystal or in illuminator, use the suitable liquid crystal indicator etc. of backlight or reflecting plate etc.In the case, optical thin film of the present invention can be arranged on the one or both sides of liquid crystal cells.When the occasion that optical thin film is arranged on both sides, the optical thin film of these both sides can be identical or different.And then, when forming liquid crystal indicator, can configuration one deck on the suitable position or two-layer more than for example diffuser plate, anchor layer, antireflection film, fender, prism array, lens array thin slice, light diffusing sheet, suitable parts such as backlight.
The following describes Organnic electroluminescent device (organic EL display).Optical thin film of the present invention (polaroid etc.) is also applicable to organic EL display.Usually, organic EL display is by lamination of transparent electrode, organic luminous layer, metal electrode form luminophor (luminophor of organic electroluminescent) successively on transparency carrier.Herein, organic luminous layer is the layered product of various organic films, and known for example has: layered product that layered product that the luminescent layer that is made of the fluorescence organic solid of the hole injection layer that contains triphenylamine derivative etc. and anthracene etc. forms or the electron injecting layer that is made of such luminescent layer Yu perylene derivant etc. form or the structure with the various combinations such as layered product that formed by these hole injection layers, luminescent layer and electron injecting layer.
Organic EL display is by coming to organic luminous layer injected hole and electronics to transparency electrode and metal electrode impressed voltage, because the energy that these holes produced when combining with electronics again excites fluorescent material, just send light when the fluorescent material that is excited returns to ground state, organic EL display relies on this principle luminous exactly.The mechanism of combination is identical with general diode again in the so-called way, can expect thus, and electric current and luminous intensity demonstrate with respect to the voltage that adds and follow the strong non-linear of rectification.
In organic EL display, for light that will take place in the organic luminous layer takes out, it is transparent must having an electrode at least, can use transparency electrode that the transparent conductive body by tin indium oxide (ITO) etc. forms as anode usually.On the other hand, in order can easily to inject electronics and to improve luminescence efficiency, using the little material of work function is important as negative electrode, uses the metal electrode of Mg-Ag, Al-Li etc. usually.
In having the organic EL display of this structure, formed organic luminous layer is that a kind of thickness has only the film about 10nm.Therefore, organic luminous layer is also the same with transparency electrode can allow light almost completely pass through.Its result, non-when luminous by the surperficial incident of transparency carrier and see through transparency electrode and organic luminous layer and then the light that reflected by metal electrode, surface one side from transparency carrier penetrates again, therefore, when from visual observation, the display surface of organic EL display looks that to resemble minute surface the same.
In the organic EL display of the luminophor that contains organic electroluminescent, coming the face side of luminous organic luminous layer to have transparency electrode by impressed voltage, simultaneously has metal electrode in the inside of organic luminous layer side, in this organic EL display, can polaroid be set in the face side of transparency electrode, between these transparency electrodes and polaroid, polarizer be set simultaneously.
Polarizer and polaroid have a kind of effect that makes the light generation polarisation that reflects from outside incident and by metal electrode, because a kind of effect of can't see the minute surface of metal electrode from the outside is played in this polarisation effect.Particularly, the minute surface of metal electrode can be covered fully using 1/4 wavelength plate to constitute polarizer and the angle of the polarization direction of polaroid and polarizer being adjusted under the condition of π/4.
That is to say in inciding the exterior light of this organic EL display, to have only the linear polarization composition to pass through from polaroid.And this linear polarization generally will be transformed into elliptical polarized light by polarizer, still, is 1/4 wavelength plate at polarizer particularly, and the angle of the polarization direction of polaroid and polarizer is π/4 o'clock, and this linear polarization just is transformed into rotatory polarization.
This rotatory polarization sees through transparency carrier, transparency electrode, organic film, reflected by metal electrode then, and then see through organic film once more, transparency electrode, transparency carrier, and then be transformed into linear polarization by polarizer.So the polarization direction of this linear polarization and polaroid is perpendicular, therefore can not see through polaroid.Its result can be covered the minute surface of metal electrode fully.
(embodiment)
Specifically describe the present invention below by embodiment, but the present invention is not subjected to the qualification of these embodiment.Should illustrate that part and % in each example all are as benchmark with weight.
Embodiment 1
(preparation of optical thin film)
The polyvinyl alcohol film that with thickness is 80 μ m stretches 5 times in 40 ℃ iodine aqueous solution, then 50 ℃ dry 4 minutes down, obtained polarizer.Use the polyvinyl alcohol bonding agent on the both sides of this polarizer, to paste the tri acetyl cellulose film then, thereby obtained polaroid.
(formation of antistatic backing)
Use a kind of with 80% 2-isopropanol water solution with water-dispersion type polythiophene class electric conductive polymer solution (Nagasechemtex corporate system, trade name: 5 times of solution that form of dilution デ Na ト ロ Application P-502RG).With this solution coat on the one side of this polaroid, the control coating weight so that with heating wire (ワ ィ ャ one バ one) (#8) dried thickness become 150nm, then 80 ℃ of dryings 2 minutes, thus the formation antistatic backing.
(formation of anchor layer)
Use a kind of with 50% 2-aqueous propanol solution with polyethyleneimine (Japanese catalyst society system, trade name P-1000) 50 times of solution that form of dilution.On the antistatic backing of the polaroid that has antistatic backing that obtains by this method, the control coating weight is so that becoming 100nm with the dried thickness of heating wire (#5), be dried then with this solution coat, thus the formation anchor layer.
(formation of adhesive phase)
Use a kind of containing to comprise butyl acrylate: acrylic acid: the weight-average molecular weight of the multipolymer of acrylic acid 2-hydroxyl ethyl ester=100: 5: 0.1 (weight ratio) is that the solution (Gu shape divides 24%) of 2,000,000 acrylic polymers is as base polymer.Divide 100 parts with respect to the solid shape of the polymkeric substance in this acrylic polymers solution, to wherein adding glycuronate (ュ ロ ネ one ト) L3.2 part and the adjuvant (KBM-403 by the Japanese polyurethane corporate system as the isocyanates multi-functional compounds, SHIN-ETSU HANTOTAI's silicone corporate system) 0.6 part and the solvent (ethyl acetate) that is used to regulate viscosity, thus make binder solution (Gu shape divides 11%).Using contrary roller rubbing method is that the coating weight of 25 μ m is coated on mould release film (polyethylene terephthalate base material: ダ ィ ャ ホ ィ Le MRF38 with this binder solution according to dried thickness, Mitsubishi Chemical's polyester) on, and then add mould release film in the above, use the heated air circulation type oven drying, thereby form adhesive phase.
(preparation of antistatic adhering optical film)
Applying one deck has formed the mould release film of adhesive phase on the anchor layer that is formed at this static electricity resistance polaroid surface, thereby has made antistatic adhering type polaroid.
Embodiment 2
In embodiment 1, except the formation method of anchor layer being changed into following method, all the other prepare antistatic adhering type polaroid according to method similarly to Example 1.
(formation of anchor layer)
Use a kind of with methyl isobutyl ketone with the polyethyleneimine addition product of polyacrylate (Japanese catalyst society system, trade name Polyment NK380) 50 times of solution that form of dilution.Be coated on obtaining solution on the antistatic backing of the polaroid that has antistatic backing that makes according to the method in formation one joint of antistatic backing among the embodiment 1 according to the coating weight of using the dried thickness of heating wire (#5) as 100nm, be dried then, thereby formed anchor layer.
Embodiment 3
(optical thin film)
Use the polarizer (80 μ m) that a kind of norbornene resin by uniaxial tension (JSR corporate system, trade name ァ one ト Application) is made and the process surface corona is handled.
(formation of antistatic backing)
Use a kind of aqueous solution that contains 1 weight % water-soluble poly aniline sulfonic acid (weight-average molecular weight of polystyrene conversion is 150000 for Mitsubishi Rayon corporate system, trade name PAS).This aqueous solution is coated on the side of this polarizer, drying is 2 minutes in 80 ℃ air drier, thereby forms antistatic backing (thickness 200nm).
(formation of anchor layer)
Use a kind of aqueous solution with 50% 2-propyl alcohol with polyethyleneimine (Japanese catalyst society system, trade name P-1000) 50 times of solution that form of dilution.This solution according on the antistatic backing that is coated on the polarizer that has antistatic backing that obtains by this method in the coating weight that with the dried thickness of heating wire (#5) is 100nm, is dried then.
(lamination of adhesive phase)
The mould release film that is formed with adhesive phase that applying one deck makes in embodiment 1 on the anchor layer of the static electricity resistance polarizer that obtains by this method, thus antistatic adhering type polarizer made.
(preparation of antistatic adhering type polarizing film)
Go up the adhesive phase of applying adhesion type polaroid (day Dong Diangongshe system, trade name SEG 5425 DU) at the opposite side (side of adhesive phase is not set) of this antistatic adhering type polarizer, thereby make antistatic adhering type ellipsoidal polarizing plate.
Comparative example 1
In embodiment 1, except anchor layer is not set, make antistatic adhering type polaroid according to method similarly to Example 1.
Comparative example 2
In embodiment 1, except antistatic backing is not set, make the adhesion type polaroid according to method similarly to Example 1.
Comparative example 3
In embodiment 3, except anchor layer is not set, make antistatic adhering type ellipsoidal polarizing plate according to method similarly to Example 3.
Carry out following evaluation for antistatic adhering optical film that in this embodiment and comparative example, obtains etc.Evaluation result is shown in Table 1.
(bonding agent is damaged)
The antistatic adhering optical film that to make by this method becomes the size of 25mm * 150mm by thomson knife-edge stamping-out, and the end that cuts off is contacted 20 times with level and smooth SUS steel plate.The end of each antistatic adhering optical film of visualization is estimated according to following benchmark then.And the damaged area of bonding agent is shown.The results are shown in the table 1.
Zero: do not have bonding agent damaged.
△: do not have the above bonding agent of 0.3mm damaged.
*: there is the above bonding agent of 0.3mm damaged.
(adhesive residue)
The antistatic adhering optical film of making is cut into the size of 100mm * 100mm, it is attached on the liquid crystal display.This liquid crystal display was placed 48 hours under 40 ℃ * 92% humidified condition, with hand antistatic adhering optical film is peeled off from liquid crystal display then, estimate according to following benchmark.
Zero: do not have adhesive residue.
△: adhesive residue is on screen board.
(adaptation)
With the antistatic adhering optical film of making cut into 25mm wide * the long size of 50mm.The evaporation face of the evaporated film that its bonding agent aspect is formed with evaporation indium-tin oxide on the surface of the thick pet film of one 50 μ m fits together, and places more than 20 minutes it in the environment of 23 ℃/60%RH then.With hand the end of pet film is peeled off then, confirming that adhesive attachment is in pet film one rear flank, use cupping machine (Shimadzu Seisakusho Ltd.'s corporate system, Autograph AG-1), the haulage speed of dividing according to 300mm/ in room temperature environment (25 ℃) is carried out 180 ° peeling off, and so measures the adaptation (N/25mm) of antistatic backing and adhesive phase.This adaptation (N/25mm) is preferably more than 15N/25mm, more preferably more than 18N/25mm.
(anti-static effect)
The antistatic adhering optical film of making is cut into the size of 100mm * 100mm, it is attached on the liquid crystal display.Place one to have 10000cd/m this liquid crystal display 2On the backlight of briliancy; (base material: thickness is the polyethylene terephthalate of 38 μ m to the wall-attached surface protective film in the above; adhesive phase: thickness is the acrylic adhesives of 20 μ m) afterwards, along 180 ° direction this protective film is peeled off according to the speed that 7m/ divides.Use a moment multichannel photometry detecting device (Da Peng electronics corporation system, MCPD-3000) measure because the bad release time (second) of the orientation caused demonstration of confusion of liquid crystal.
(sheet resistance value)
The surface resistivity of use surface resistance analyzer (Mitsubishi Chemical's (strain) makes, Hiresta MCP-HT450) mensuration antistatic backing under the condition that adds 500V voltage (Ω/).
Table 1
Bonding agent is damaged Adhesive residue Adaptation (N/25mm) Show bad release time (second) Surface resistivity (Ω/)
Embodiment 1 ????○ ????○ ????24.2 ????1～2 ??2×10 7
Embodiment 2 ????○ ????○ ????18 ????1～2 ??2×10 7
Embodiment 3 ????○ ????○ ????22 ????2～3 ??7×10 7
Comparative example 1 ????× ????× ????9 ????4～5 ??2×10 7
Comparative example 2 ????△ ????○ ????24 More than 1800 ??1×10 14
Comparative example 3 ????× ????× ????12.1 ????2～3 ??7×10 9

Claims (12)

1. antistatic adhering optical film, its on the one side at least of optical thin film successively lamination antistatic backing, anchor layer and adhesive phase are arranged.
2. antistatic adhering optical film as claimed in claim 1, wherein, this anchor layer contains polymkeric substance.
3. antistatic adhering optical film as claimed in claim 2, wherein, this polymkeric substance has functional group.
4. antistatic adhering optical film as claimed in claim 3, wherein, this functional group is amino.
5. antistatic adhering optical film as claimed in claim 4, wherein, this polymkeric substance has the polyethyleneimine: amine structure.
6. antistatic adhering optical film as claimed in claim 3, wherein, this adhesive phase contains a kind of base polymer with functional group, and described functional group has the reactivity that can react with this functional group that this polymkeric substance had in this anchor layer.
7. antistatic adhering optical film as claimed in claim 6, wherein, this 8 functional group that this base polymer had is a carboxyl.
8. antistatic adhering optical film as claimed in claim 1, wherein, this adhesive phase comprises acrylic adhesives.
9. antistatic adhering optical film as claimed in claim 3, wherein, this antistatic backing contains electric conductive polymer.
10. antistatic adhering optical film as claimed in claim 9, wherein, this electric conductive polymer has functional group.
11. antistatic adhering optical film as claimed in claim 10, wherein, this functional group that this electric conductive polymer had has the reactivity that can react with this functional group that this polymkeric substance had in this anchor layer.
12. an image display device, it comprises the antistatic adhering optical film described in each of claim 1～11.
CNB2005100524648A 2004-02-26 2005-02-28 Antistatic adhering optical film, and image display Active CN100383561C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP51908/2004 2004-02-26
JP2004051908A JP4837257B2 (en) 2004-02-26 2004-02-26 Antistatic adhesive optical film and image display device
JP51908/04 2004-02-26

Publications (2)

Publication Number Publication Date
CN1661396A true CN1661396A (en) 2005-08-31
CN100383561C CN100383561C (en) 2008-04-23

Family

ID=35010820

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100524648A Active CN100383561C (en) 2004-02-26 2005-02-28 Antistatic adhering optical film, and image display

Country Status (4)

Country Link
JP (1) JP4837257B2 (en)
KR (1) KR20060042224A (en)
CN (1) CN100383561C (en)
TW (1) TWI366009B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107884849A (en) * 2016-11-04 2018-04-06 江苏日久光电股份有限公司 Complex optical film
CN109196321A (en) * 2016-05-30 2019-01-11 日东电工株式会社 Piezoelectric transducer and the display for having used the piezoelectric transducer
CN113504668A (en) * 2017-03-28 2021-10-15 日东电工株式会社 Embedded liquid crystal panel and liquid crystal display device
TWI775458B (en) * 2020-08-26 2022-08-21 日商昭和電工股份有限公司 Transparent conductive substrate

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7759442B2 (en) 2005-01-26 2010-07-20 Nitto Denko Corporation Adhesive composition, adhesive optical film and image display device
KR100830814B1 (en) * 2005-10-14 2008-05-20 주식회사 엘지화학 Acrylic pressure sensitive adhesive compositions
JP4505642B2 (en) * 2005-11-24 2010-07-21 フジコピアン株式会社 Attaching sheet
JP4505645B2 (en) * 2006-02-17 2010-07-21 フジコピアン株式会社 Affixing the fixed sheet
JP4505644B2 (en) * 2006-02-17 2010-07-21 フジコピアン株式会社 Fixed sheet
JP4505646B2 (en) * 2006-02-20 2010-07-21 フジコピアン株式会社 Fixed sheet
KR20070096145A (en) * 2006-03-14 2007-10-02 광 석 서 Antistatic coating formulation for polarizer films and antistatic polarizer film using the same
JP4505649B2 (en) * 2006-03-23 2010-07-21 フジコピアン株式会社 Fixed sheet
WO2007114179A1 (en) 2006-03-28 2007-10-11 Dai Nippon Printing Co., Ltd. Optical laminated body
KR100728329B1 (en) * 2006-05-16 2007-06-13 정종구 Pressure sensitive adhesive film for surface protection
JP5245391B2 (en) * 2006-12-22 2013-07-24 大日本印刷株式会社 OPTICAL LAMINATE, PROCESS FOR PRODUCING THE SAME, AND COMPOSITION FOR ANTISTATIC LAYER
JP5250307B2 (en) * 2007-07-11 2013-07-31 日東電工株式会社 Adhesive optical film and image display device
JP2013014664A (en) * 2011-07-01 2013-01-24 Nitto Denko Corp Multilayer adhesive article and adhesive sheet
JP2013014665A (en) * 2011-07-01 2013-01-24 Nitto Denko Corp Multilayer adhesive article and adhesive sheet
CN103635554A (en) * 2011-07-01 2014-03-12 日东电工株式会社 Multilayer adhesive article and adhesive sheet
JP6599619B2 (en) * 2015-02-17 2019-10-30 日東電工株式会社 Adhesive sheet and optical member
JP6599618B2 (en) * 2015-02-17 2019-10-30 日東電工株式会社 Adhesive sheet and optical member
WO2018021051A1 (en) * 2016-07-28 2018-02-01 日東電工株式会社 Separator-covered reinforcing film
KR101897974B1 (en) * 2017-08-25 2018-09-12 엘지디스플레이 주식회사 Liquid crystal display device with a built-in touch screen
JP7036623B2 (en) * 2018-02-28 2022-03-15 積水化学工業株式会社 Laminate

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124601A (en) * 1990-09-14 1992-04-24 Nitto Denko Corp Polarizing plate
JPH0726223A (en) * 1993-07-08 1995-01-27 Dainippon Printing Co Ltd Highly transparent and slightly sticky antistatic protective film
US5662985A (en) * 1996-05-21 1997-09-02 Mobil Oil Corporation Two-side coated label facestock
JP3155723B2 (en) * 1997-04-07 2001-04-16 株式会社日本触媒 Antistatic agent using water-soluble conductive polymer
JPH107795A (en) * 1996-06-24 1998-01-13 Hitachi Chem Co Ltd Conductive resin sheet
JPH1191038A (en) * 1997-07-24 1999-04-06 Sumitomo Chem Co Ltd Antistatic plate
JP2000026817A (en) * 1998-07-14 2000-01-25 Teijin Ltd Surface-protective film
JP4414016B2 (en) * 1999-05-24 2010-02-10 日東電工株式会社 Surface protection film
CN1277275C (en) * 2000-04-03 2006-09-27 大日本印刷株式会社 Transparent, electrically conductive and heat-sealable material and ladded container for carrier tape using the same
JP4007920B2 (en) * 2002-02-01 2007-11-14 日東電工株式会社 Adhesive optical film and image display device
JP4007502B2 (en) * 2002-02-01 2007-11-14 日東電工株式会社 Adhesive optical film and image display device
JP4514392B2 (en) * 2002-02-26 2010-07-28 日東電工株式会社 Method for producing protective film for polarizing plate
JP4170102B2 (en) * 2003-01-23 2008-10-22 藤森工業株式会社 Surface protective film and laminate using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109196321A (en) * 2016-05-30 2019-01-11 日东电工株式会社 Piezoelectric transducer and the display for having used the piezoelectric transducer
CN107884849A (en) * 2016-11-04 2018-04-06 江苏日久光电股份有限公司 Complex optical film
CN113504668A (en) * 2017-03-28 2021-10-15 日东电工株式会社 Embedded liquid crystal panel and liquid crystal display device
TWI775458B (en) * 2020-08-26 2022-08-21 日商昭和電工股份有限公司 Transparent conductive substrate

Also Published As

Publication number Publication date
KR20060042224A (en) 2006-05-12
JP2005238651A (en) 2005-09-08
CN100383561C (en) 2008-04-23
TW200540471A (en) 2005-12-16
JP4837257B2 (en) 2011-12-14
TWI366009B (en) 2012-06-11

Similar Documents

Publication Publication Date Title
CN1661396A (en) Antistatic adhering optical film, and image display
CN1661395A (en) Antistatic optical film, antistatic adhering optical film, their prodn. and image display
CN101040196A (en) Antistatic adhesive optical film and image display
CN100458467C (en) Charge-preventing optical film, charge-preventing adhesive optical film, manufacturing method thereof, and image display device
CN100592110C (en) Antistatic adhering optical film, its manufacture method and image display
CN100485420C (en) Antistatic adhesive optical film and image display device
JP4007920B2 (en) Adhesive optical film and image display device
CN1603866A (en) Pressure sensitive adhesive composition for optical members, pressure sensitive adhesive layer for optical members, pressure sensitive adhesive optical member and image display
CN1957274A (en) Optical film with surface protection film and image display
CN1540372A (en) Electrostatic resistance optical film, its prepn. method and image displaying device
KR100888573B1 (en) Adhesive for optical film, adhesive layer for optical film and method for producing same, adhesive optical film, and image display
CN1734297A (en) Retardation pressure-sensitive adhesive layer and method of producing the same, pressure-sensitive adhesive optical film and method of producing the same, and image display
CN1800288A (en) Pressure sensitive adhesives for optical film, manufacturing methods thereof
CN1625702A (en) Adhesive type optical film and image display
TW200817734A (en) Adhesive optical film and image display device
CN1732493A (en) Image display manufacturing method, image display, adhesive optical film
CN100478712C (en) Antistatic optical film, antistatic adhesive optical film and image display
CN1947041A (en) Optical member, method of manufacturing the same, and image display device applying the same
CN1618602A (en) Method for stripping adhesive optical film
CN1820217A (en) Optical film having adhesive and image display apparatus
JP4341813B2 (en) Optical member with adhesive, method for producing the same, and image display device
JP2005048003A (en) Adhesive composition for optical member, adhesive layer for optical member, adhesive optical member and method for producing the same, image display device, and method for producing adhesive optical member

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant