CN101546005A - Optical laminate for plasma display - Google Patents
Optical laminate for plasma display Download PDFInfo
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- CN101546005A CN101546005A CNA2009101193621A CN200910119362A CN101546005A CN 101546005 A CN101546005 A CN 101546005A CN A2009101193621 A CNA2009101193621 A CN A2009101193621A CN 200910119362 A CN200910119362 A CN 200910119362A CN 101546005 A CN101546005 A CN 101546005A
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Abstract
Provided is an optical laminate for a plasma display in which a moire phenomenon can be prevented without disposing an anti-glare film and the like in order to decrease a thickness of an optical filter in a plasma display, improve a productivity of the optical filter and reduce a cost thereof. The optical laminate used for an optical filter of a plasma display comprises an electromagnetic-wave shielding film having a metal mesh and a contrast enhancing film, wherein a light diffusion pressure-sensitive adhesive layer containing organic fine particles is disposed on a surface of at least one of the electromagnetic-wave shielding film and the contrast enhancing film.
Description
Technical field
The present invention relates to be suitable for the optical laminate of the light filter of plasma display.
Background technology
Plasma display is for exciting the molecule of the rare gas of inclosure by interelectrode plasma discharge, and with the ultraviolet ray excited fluorescent material of generation, the luminous and device of displayed image of the light that makes the visible region.In this plasma display, owing to utilize plasma discharge and luminous, frequency band is therefore the unwanted electromagnetic wave of 30-130MHz can be to external leakage,, for the machine (for example signal conditioning package etc.) to other not produces harmful effect, require to do one's utmost to suppress electromagnetic wave.
For example, disclose a kind of electric conductivity reticulated film in patent documentation 1, it is used for the light filter of plasma display, by conducting fibre being constituted netted conducting fibre net or being formed by the conductive metal net that the metal of Copper Foil etc. forms.
In addition, in the light filter of plasma display,, also can use contrast to improve film in order to improve the contrast of picture.(for example, with reference to patent documentation 2)
And, in the light filter of plasma display, using under the situation of wire netting as the electromagnetic wave screen unit of electromagnetic shielded film, because improving interfering with each other of film, wire netting and contrast can produce the interference fringe phenomenon, so, need further configuration anti-dazzle film in order to prevent the interference fringe phenomenon.For example, in patent documentation 3, use the anti-dazzle film that the surface has been carried out the anti-dazzle processing in order to prevent the interference fringe phenomenon.
But during the configuration anti-dazzle film, the film number of pasting in order to form light filter increases, and therefore, exists the cost up of light filter and throughput rate to reduce, and the thickness of while light filter is the problem of thickening also.
Patent documentation 1: the spy opens the 2004-226732 communique
Patent documentation 2: the spy opens the 2007-272161 communique
Patent documentation 3: the spy opens the 2006-189867 communique
Summary of the invention
In order to address the above problem, though the object of the present invention is to provide a kind of thin thickness of the light filter that makes plasma display and can improve light filter throughput rate, reduce cost do not dispose the optical laminate that is used for plasma display that anti-dazzle film etc. also can prevent the interference fringe phenomenon.
The inventor has carried out deep repeatedly research in order to address the above problem, and found that, can reach this purpose by using specific light diffusion adhering agent layer.The present invention is based on this opinion and finishes.
That is, main points of the present invention are:
1, a kind of optical laminate that is used for plasma display, this optical laminate comprises that electromagnetic shielded film and contrast with wire netting improve film, the light filter that is used for plasma display, it is characterized in that, on the face of this electromagnetic shielded film and/or this contrast raising film, dispose the light diffusion adhering agent layer that contains organic particle.
2, according to the above-mentioned 1 described optical laminate that is used for plasma display, wherein, the mist degree of described light diffusion adhering agent layer is 5-60%.
3, according to the above-mentioned 1 or 2 described optical laminates that are used for plasma display, wherein, the thickness of described light diffusion adhering agent layer is 1-100 μ m.
4, according to any described optical laminate that is used for plasma display among the above-mentioned 1-3, wherein, the pressure-sensitive adhesive composite that constitutes described light diffusion adhering agent layer contains: (A) have (methyl) acrylate based copolymer, (B) crosslinking chemical of bridging property functional group in the molecule and (C) be more than 0.03 with respect to the difference of the refractive index of this (methyl) acrylate based copolymer and mean grain size is the organic particle of 1-15 μ m.
5, according to the above-mentioned 4 described optical laminates that are used for plasma display, wherein, the crosslinking chemical of described (B) composition is polyisocyanate compounds and/or metallo-chelate.
6, according to the above-mentioned 4 or 5 described optical laminates that are used for plasma display, wherein, with respect to the stickability resin of (methyl) acrylate based copolymer that contains (A) composition of 100 mass parts, described pressure-sensitive adhesive composite contains the organic particle of (C) composition of 0.1-3.0 mass parts.
7, according to any described optical laminate that is used for plasma display among the above-mentioned 4-6, wherein, the organic particle of described (C) composition contains the SDVB multipolymer.
According to the present invention, even a kind of optical laminate that is used for plasma display that anti-dazzle film etc. also can prevent the interference fringe phenomenon that do not dispose can be provided.Thus, can make the thickness attenuation of the light filter of plasma display, can boost productivity simultaneously, reduce cost.Especially by thickness attenuation, also can make the commodity value of plasma display higher with light filter.
Description of drawings
Fig. 1 is the diagrammatic cross-section of an example of the optical laminate that is used for plasma display of the present invention;
Fig. 2 is the diagrammatic cross-section of an other example of the optical laminate that is used for plasma display of the present invention;
Fig. 3 is the diagrammatic cross-section of an other example of the optical laminate that is used for plasma display of the present invention;
Fig. 4 is the diagrammatic cross-section of an example of the optical laminate that is used for plasma display of comparative example;
Fig. 5 improves the diagrammatic cross-section of film for the contrast of using at the optical laminate that is used for plasma display of the present invention.
Description of reference numerals
1 optical laminate of the present invention
2 contrasts improve film
3 light diffusion adhering agent layer
4 electromagnetic shielded films
5 adhesive linkages
6 anti-dazzle films
The optical laminate of 10 comparative examples
21 lens sections
22 light absorption departments
Embodiment
The optical laminate that is used for plasma display of the present invention is to comprise that electromagnetic shielded film with wire netting and contrast improve the optical laminate of film, the light filter that is used for plasma display, it is characterized in that, on the face of this electromagnetic shielded film and/or this contrast raising film, dispose the light diffusion adhering agent layer that contains organic particle.
With reference to the accompanying drawings the structure that is used for the optical laminate of plasma display of the present invention is described.
Fig. 1 is the diagrammatic cross-section of an example of the optical laminate that is used for plasma display of the present invention (below, be also referred to as " optical laminate of the present invention ").
As shown in Figure 1, first example of optical laminate 1 of the present invention is: the face upper strata that contrast improves film 2 be pressed with the light diffusion adhering agent layer that contains organic particle (below, only be called " light diffusion adhering agent layer ") 3, be pressed with electromagnetic shielded film with wire netting (below, be also referred to as " electromagnetic shielded film ") 4 on the face upper strata of this light diffusion adhering agent layer 3.
Fig. 2 and Fig. 3 are other the diagrammatic cross-section of example of the optical laminate that is used for plasma display of the present invention.Second example of optical laminate of the present invention 1 shown in Figure 2 is: improve on the film 2 in contrast, by as required and the adhesive coating 5 of lamination, lamination has the electromagnetic shielded film 4 with wire netting, is pressed with light diffusion adhering agent layer 3 on the face upper strata of this electromagnetic shielded film 4.
In addition, the 3rd example of optical laminate of the present invention 1 as shown in Figure 3 is: on the electromagnetic shielded film 4 with wire netting, by as required and the adhesive coating 5 of lamination, lamination has contrast to improve film 2, and the face upper strata of improving film 2 in this contrast is pressed with light diffusion adhering agent layer 3.That is, in the present invention, light diffusion adhering agent layer 3 is configured in contrast and improves on the face of film 2 and/or electromagnetic shielded film 4 and get final product, and is unqualified to the position that disposes.From the viewpoint of the thickness attenuation of light filter is considered, replace the adhesive linkage of configuration, preferred disposition light diffusion adhering agent layer 3 for the bonding of the interlayer of the base material of light filter and various films.
On the other hand, Fig. 4 is the diagrammatic cross-section of an example of the optical laminate 10 of comparative example.In Fig. 4, the optical laminate 10 of comparative example is: on electromagnetic shielded film 4, by as required and the adhesive linkage 5 of lamination, lamination has contrast to improve film 2, and by as required and the adhesive linkage 5 of lamination, lamination has anti-dazzle film 6.By lamination anti-dazzle film 6, the number of the film of lamination increases, thereby the throughput rate of light filter reduces, and light filter thickens simultaneously, therefore with this social demand of plasma display attenuation is inconsistent.
The mist degree of the light diffusion adhering agent layer 3 that the present invention relates to is preferably 5-60%, more preferably 15-25%.The mist degree of light diffusion adhering agent layer 3 is 5% when above, can make light be diffused into the degree that can improve the interference fringe phenomenon; The mist degree of light diffusion adhering agent layer 3 is 60% when following, can guarantee that for the necessary photopermeability as the filtrator of plasma display, from this viewpoint, the mist degree that preferred light spreads adhering agent layer 3 is 5-60%.
In addition, the thickness of light diffusion adhering agent layer is preferably 1-100 μ m, more preferably 5-60 μ m.The thickness of light diffusion adhering agent layer is 1 μ m when above, can obtain sufficient light diffusion effect and bonding force; The thickness of light diffusion adhering agent layer is 100 μ m when following, can prevent by the square that pressure-sensitive adhesive composite from exposing from the light filter end or ooze out.
The contrast that the present invention relates to improves film 2 and is used for giving contrast raising effect to light filter.Contrast improves film 2 for example can be enumerated, disclosed like that as patent documentation 2, comprises the contrast raising film of lens section and light absorption department.
Extend on for example horizontal direction of the section shape of the wedge shape of light absorption department in contrast improves the plane of film 2, this light absorption department with the perpendicular direction of this horizontal direction on be that 100 μ m are a plurality of and are arranged in parallel with for example spacing.
In light absorption department, be filled with the material that for example in the transparent adhesives resin, has added the light absorption particle.
On the other hand, formation method as lens section, for example can use: heated mould is pressed to pressure sintering in the thermoplastic resin, the thermoplastic resin composition is injected the casting method that makes its curing in the mould, injection molded method, ultraviolet-curing resin composition is injected into known method in the past such as UV method of making its ultraviolet curing in the shaping dies, but in these methods, the UV method that more preferably mass productivity is good.The UV method can be used the mould of roller shape, supplies with continuous sheet, simultaneously lens unit is carried out mold pressing continuously and produces.For example, lens section is by the material of epoxy acrylate with ionizing radiation curable etc. and form.As ionizing radiation, preferred ultraviolet ray, electron ray etc.
As mentioned above, when forming lens section, form the ditch of wedge shape.In the ditch of this wedge shape, fill the light absorption particle and contained the China ink of clear binder resin of the effect of adhesive resin, by solidifying to form light absorption department.The light absorption particle has optical absorption, and therefore, the light that incides the inside of light absorption department is absorbed by this light absorption particle, can not shine the outside of light absorption department.
As the material of the clear binder resin that becomes light absorption department, the preferred material that uses resin with ionizing radiation curable etc.The light absorption particle that constitutes light absorption department can use commercially available colored particles, it can be dispersed in as the clear binder resin China and Mexicoization of adhesive resin and use.
In order to improve the easiness in the preparation, also can in above-mentioned China ink, suitably add the adjuvant of a spot of defoamer or levelling agent etc. as required.
As colored particles, can use the black pigment of carbon black as black particles etc. or material after for example the transparent particles of acrylic acid etc. dyes etc. in the black pigment of described carbon black etc. with resin particle.In addition, also can use above-mentioned black colorant material is mixed in the mixing of the various pigment of the blueness that is dispersed in except that black pigment, purple, yellow, redness and/or dyestuff or blueness, purple, yellow, the red colored material, form the material of black in fact.As blue pigment, can use copper phthalocyanine etc.; As violet pigment, can use dioxazine violet etc.; As yellow uitramarine, can use dual-azo yellow etc.; As red pigment, can use the red typel of pigment phthalandione (Network ロ モ Off Le レ Star De イ ペ Le) etc., but be not limited to this, except that pigment, can also use dyestuff.In addition, also can be with the painted color or the dyestuff that mix to disperse behind blueness, purple, yellow, redness, black pigment or the dyestuff, to resin particle for example the transparent particles of acrylic acid etc. carry out colored particles after painted.
In above-mentioned colored particles, the light absorption of black particles is higher, and is therefore preferred.
The mean grain size that the contrast that preferably the present invention relates to improves the light absorption particle in the film 2 is that 1 μ m is above, the width of the upper bottom surface of light absorption department half below.The size of light absorption particle too hour can not obtain sufficient optical absorption.On the other hand, the size of light absorption particle surpass light absorption department upper bottom surface width half and when excessive, in preparation, be difficult to fill China ink in the ditch of wedge shape, fill rate variance, the filling rate between the ditch of unit wedge shape is uneven simultaneously, produce hot spot, not preferred.
In addition, the contrast that the present invention relates to improves the light absorption particle in the film 2, is preferably the 10-50 volume % of all volumes of light absorption department.By keeping this ratio, can guarantee sufficient optical absorption, give easy preparation condition.
As adhesive resin, can use the transparent resin of the refractive index that for example has regulation, have the ultraviolet curing resin of ionizing radiation solidification or electron ray curing type resin etc.Also have directly to be cured the adhesive resin of reaction, but be generally:, cause curing reaction by being called the material that catalyzer or initiating agent are used for provocative reaction with the ionization radioactive ray.In order to occur in the curing reaction under the ultraviolet ray that wavelength is 300-400nm, will be called usually light trigger be used to excite the material of reaction of ultraviolet region to mix to count %.As light trigger, the light trigger that ketone system or acetophenone system are arranged, known has: サ Application De レ-1000, Darocure1163, Darocure1173, Irgacure183, Irgacure184, Irgacure651 etc., can suitably select according to the kind (wavelength characteristic) of the ionizing radiation that is used to solidify.As the ionizing radiation gel-type resin, suitably (vinyl pyrrolidone, acrylic acid-2-ethyl caproite, 2-Hydroxy ethyl acrylate, tetrahydrofurfuryl acrylate, acrylic acid are to cumenyl phenoxy ethyl (p-Network ミ Le Off エ ノ キ シ エ チ Le ア Network リ レ-ト) etc.) for choice reaction oligomers [epoxy acrylate system (for example, oxirane modified bisphenol A diacrylate etc.), urethane acrylate system, polyether acrylate system, polyester acrylate system, polymercaptan system etc.], reactive monomeric.For the adjusting of the flowability of the ionizing radiation curing type light absorbing material before solidifying, the ratio of components that suitably changes the lower low-molecular-weight reactive monomer of the kind of reactive oligomer or viscosity gets final product.In addition, can add suitable cementability improving agent as required.As the cementability improving agent, can enumerate for example 2-acrylyl oxy-ethyl succinic acid (acid of 2-ア Network リ ロ イ ロ キ シ エ チ Le コ Ha Network) etc.
The material of above-mentioned suitable selection is evenly disperseed (mixing) China inkization and use with three roller dispersion methods etc.The ratio of components that this is black, by estimate its curable that causes by ionizing radiation, each physical property after solidifying suitably determines to get final product, preferably in black solid constituent, colorant is that 10-50 quality %, adhesive resin are that 50-90 quality %, light trigger are 1-10 quality %.After with the method for rubbing contact method etc. China ink being filled in the ditch of wedge shape, utilize the ionizing radiation of ultraviolet ray etc. to be cured, fixing.
Improve in the film 2 in the contrast that the present invention relates to, also can use the form that on the bottom surface of the ditch of above-mentioned wedge shape, is provided with blackstreak (Block ラ Star Network ス ト ラ イ プ).The light that incides the outside on the blackstreak from observer's side has been absorbed by blackstreak, can further improve contrast.
To have that the optical laminate that is used for plasma display that above-mentioned contrast improves film 2 is arranged on the plasma display and when using, even be the environment of irradiate light to the display surface of outside, also be difficult to cause the reduction of the contrast of plasma display.
Then, the electromagnetic shielded film 4 that the present invention relates to is described.As the electromagnetic shielded film 4 that the present invention relates to, for example, as the spy open among the 2007-246879 disclosed, preferably have the laminated film of the net metal paper tinsel that on the surface of the bond layer that is provided with on the surface of transparent membrane, forms.As transparent membrane, can use the film of acryl resin, polycarbonate resin, acrylic resin, polyvinyl resin, polystyrene resin, vibrin, cellulose-based resin, polysulfone resin or Corvic etc.Usually, use preferably that physical strength is good, the film of the vibrin of the high polyethylene terephthalate resin of the transparency etc.The thickness of transparent membrane, there is no particular limitation, from having physical strength, the big this point of repellence of bending being considered, is preferably 50 μ m-200 μ m.
As the method for the wire netting that forms electromagnetic shielded film 4, for example can enumerate: on a surface of transparent membrane, metal forming is set, carries out the method for etch processes via bonding agent.As metal forming, can use the metal of copper, iron, nickel or chromium etc., the perhaps alloy of these metals is perhaps based on more than one the paper tinsel of alloy in these metals; There is no particular limitation, wherein, considers from aspects such as electromagnetic wave shielding performance height, etching easily, easy operations, preferably uses Copper Foil.
As the thickness of metal forming, be preferably 1 μ m-100 μ m, more preferably 5 μ m-20 μ m.During the thickness less than 1 μ m of metal forming, electromagnetic wave shielding performance is abundant inadequately; When the thickness of metal forming surpasses 100 μ m, can not ignore the carrying out of side etching, therefore be difficult to form the peristome of the precision of regulation by etching.
In addition, metal forming also can be given rust-proof effect and prevent reflecting properties for have the metal forming of carrying out the melanism layer after melanism is handled in the transparent membrane side.As the antirust processing on the melanism layer, also can carry out chromate and handle.When not using the metal forming of carrying out the melanism processing in advance, in the suitable operation afterwards, also can carry out melanism and handle.In addition; the formation of melanism layer can form the photo-sensitive resin can become protective seam by the composition that use be coloured to black, after etching finishes, does not remove protective seam and makes protective seam residual; thereby form the melanism layer, also can use the electrochemical plating of the coverlay of giving black system.
In addition, other method as the wire netting that forms electromagnetic shielded film 4, for example can enumerate: on transparent membrane, conductive ink is printed as diagram shape, at the enterprising row metal electric plating method of this conductive ink layer (for example, opening the 2000-13088 communique) with reference to the spy; Use has the screen mask of figure of the clathrate (netted) of regulation, the paste that will contain the palladium colloid is printed onto on the near-infrared shielding, and be impregnated in the electroplating liquor without electrolytic copper, carry out electrolytic copper free electroplating, then carrying out cathode copper electroplates, carry out the method (for example, opening the 2007-096049 communique) of the metallide of Ni-Sn alloy again with reference to the spy; With transparent membrane and metal foil layer poststack, make metal forming become netted method (for example, opening flat 11-145678 communique) by bonding agent with reference to the spy with photoetching process; On a face of transparent membrane, form the conductive processing layer, prepare thereon to be formed with transparent membrane as the metal level of electrodeposition of metals by metallide, make the electrodeposition of metals and the conductive processing layer of the transparent membrane after this metal plating become netted method (for example, opening the 2003-86991 communique) etc. with photoetching process with reference to the spy.
As transparent membrane, use separately high ethylene-ethyl acetate copolymer resin of heat fusion or ionic polymer resin etc. hot amalgamation resin film or when using with other resin film lamination, the lamination of transparent membrane and metal forming also can not be provided with bond layer, but, usually, wait by the dry laminate method of having used bond layer and carry out lamination.As the bonding agent that constitutes bond layer, can enumerate the bonding agent of acryl resin, vibrin, urethane resin, polyvinyl alcohol resin, vinyl chloride/vinyl acetate copolymer resin or ethene-vinyl acetate copolymer resin etc., in addition, also can use thermoset resin or ionizing radiation curable resin (uv curing resin, electron ray curing resin etc.).
The preferred pressure-sensitive adhesive composite that constitutes the light diffusion adhering agent layer 3 of optical laminate 1 of the present invention contains: (A) have (methyl) acrylate based copolymer, (B) crosslinking chemical of bridging property functional group in the molecule and (C) be more than 0.03 with respect to the difference of the refractive index of this (methyl) acrylate based copolymer and mean grain size is the organic particle of 1-15 μ m.
(methyl) acrylate based copolymer that has bridging property functional group in the molecule of (A) composition that uses in the pressure-sensitive adhesive composite as the light that the present invention relates in formation diffusion adhering agent layer 3, the carbon number that preferably can enumerate the alkyl of ester moiety be the monomer that has bridging property functional group in (methyl) acrylate, molecule of 1-20, with other the multipolymer of monomer that uses as required.
At this, the carbon number of the alkyl of ester moiety is that the example of (methyl) acrylate of 1-20 can be enumerated: (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) propyl acrylate, (methyl) n-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) acrylic acid pentyl ester, (methyl) Hexyl 2-propenoate, (methyl) cyclohexyl acrylate, (methyl) acrylic acid-2-ethyl caproite, (methyl) Isooctyl acrylate monomer, (methyl) decyl acrylate, (methyl) dodecylacrylate, (methyl) acrylic acid myristyl ester, (methyl) acrylic acid cetyl ester, (methyl) stearyl acrylate acid esters etc.These can use separately, also can be used in combination.
In addition, so-called (methyl) acrylic acid comprise acrylic acid and methacrylic acid both.
In addition, the monomer that has bridging property functional group in the molecule, its functional group, preferably contain at least a in hydroxyl, carboxyl, amino, the amide group, object lesson can be enumerated (methyl) acrylic acid hydroxyalkyl acrylate of (methyl) 2-Hydroxy ethyl acrylate, (methyl) acrylic acid-2-hydroxy propyl ester, (methyl) acrylic acid-3-hydroxy propyl ester, (methyl) acrylic acid-2-hydroxyl butyl ester, (methyl) acrylic acid-3-hydroxyl butyl ester, (methyl) acrylic acid-4-hydroxyl butyl ester etc.; (methyl) acrylic amide of (methyl) acrylamide, N-methyl (methyl) acrylamide, N-methylol (methyl) acrylamide etc.; (methyl) acrylic acid alkyl monosubstituted amino ester of (methyl) acrylic acid monomethyl amino ethyl ester, (methyl) acrylic acid list ethylamino ethyl ester, the amino propyl ester of (methyl) acrylic acid monomethyl, (methyl) acrylic acid list ethylamino propyl ester etc.; The ethene unsaturated carboxylic acid of acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, citraconic acid etc. etc.These monomers can use separately, also can be used in combination.
In addition, as other the monomer that uses as required, but so long as has the monomer of bridging property functional group in the molecule that uses and the compound of copolymerization just has no particular limits.For example can enumerate: the styrenic monomers of styrene, α-Jia Jibenyixi, vinyltoluene, vinyl benzoic acid etc.; The nitrile of vinyl cyanide, methacrylonitrile etc. is a monomer; The diene monomer of butadiene, isoprene etc.; The vinyl ether of vinyl benzyl methyl ether, vinyl glycidyl ether etc. is a monomer; In the l-vinyl-2-pyrrolidone etc. one or more.
As (methyl) acrylate based copolymer of (A) composition, have no particular limits for its copolymerization mode, can be in random, block, the graft copolymer any one.In addition, as molecular weight, preferably count more than 500,000 with weight-average molecular weight.This weight-average molecular weight is 500,000 when above, and is abundant with the adhesiveness and the adhesion durability of adherend, is difficult for producing peeling or comes off etc.When considering adhesiveness and adhesion durability, this weight-average molecular weight is preferably 600,000-2,200,000, is preferably 700,000-2,000,000 especially.
In addition, above-mentioned weight-average molecular weight is the value with the polystyrene conversion of gel permeation chromatography (GPC) method mensuration.
Moreover, in this molecule, have in (methyl) acrylate based copolymer of bridging property functional group, have the content of the monomeric unit of bridging property functional group in the molecule, with respect to (methyl) acrylate based copolymer, be preferably the scope of 0.01-10 quality %.This content is 0.01 quality % when above, by with the reaction of crosslinking chemical described later, crosslinked fully, permanance is good.On the other hand, this content is 10 quality % when following, can not become too high and be caused that the stickup adaptability with adherend reduces by bridging property, and is therefore preferred.Consider permanance and with stickup adaptability of adherend etc., this preferred content with monomeric unit of bridging property functional group is 0.05-8.0 quality %, is preferably the scope of 0.2-8.0 quality % especially.
In the present invention, (methyl) acrylate based copolymer of this (A) composition can use a kind of, and use also can two or morely combine.
To be to have the monomer of bridging property functional group in (methyl) acrylate of 1-20 and the molecule and method that polymerizable monomer that other monomer of using is as required formed carries out polymerization by the carbon number of the alkyl of above-mentioned ester moiety, have no particular limits, for example can enumerate: anionic polymerization, cationic polymerization and radical polymerization etc.Wherein, be that (methyl) acrylate based copolymer aspect that has bridging property functional group in the molecule is considered from obtaining target product (A) composition well with easy operation, yield, preferred radical polymerization.
As above-mentioned polymerizable monomer is carried out polymerization with radical polymerization, obtaining target product is the concrete method that has (methyl) acrylate based copolymer of bridging property functional group in the molecule, for example, can be by polymerizable monomer and radical polymerization initiator be added in the solvent, be used for the reactor of polymerization, obtaining 60-120 ℃ of following the stirring 8-24 hour.
As above-mentioned radical polymerization initiator, have no particular limits, for example can enumerate: the superoxide of hydrogen peroxide, isobutyl peroxide, tert-butyl peroxide, peroxidating decoyl, decanoyl peroxide, laurylperoxide acyl, benzoyl peroxide, potassium persulfate, ammonium persulfate, sodium peroxydisulfate etc.; Azoisobutyronitrile, 2,2 '-azo two (4-methoxyl-2,4-methyl pentane nitrile), 2,2 '-azo two (2-cyclopropyl propionitrile), 2,2 '-azo two (2-methyl propionitrile), 2, the azo-compound of 2 '-azo two (2-methylbutyronitrile) etc.; The redox initiator of hydrogen peroxide-ascorbic acid, hydrogen peroxide-iron chloride, persulfate-sodium bisulfite etc. etc.In above-mentioned radical polymerization initiator, the azo-compound of preferred azoisobutyronitrile etc.
The addition of radical polymerization initiator, the polymerizable monomer with respect to the use of 100 mass parts is generally the 0.05-1 mass parts, is preferably the 0.1-0.8 mass parts.
As long as the solvent that uses when polymerizable monomer is carried out polymerization is not for to hinder the solvent of polyreaction just to have no particular limits.For example can enumerate: the ester class of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, methyl lactate etc.; The ketone of acetone, methyl ethyl ketone, methyl isobutyl ketone, metacetone, cyclohexanone etc.; Diethyl ether, Di Iso Propyl Ether, dibutyl ethers, 1,2-dimethoxy-ethane, tetrahydrofuran, 1, the ethers of 4-diox etc.; N, N '-dimethyl formamide, N, the amide-type of N '-dimethyl acetamide, hexamethyl phosphoramide (ヘ キ サ メ チ Le リ Application acid ホ ス ホ ロ ア ミ De), N-Methyl pyrrolidone etc.; The lactams of epsilon-caprolactams etc.; The lactone of г-lactone, delta-lactone etc.; The sulfoxide class of dimethyl sulfoxide (DMSO), diethyl sulfoxide etc.; The aliphatic hydrocarbon of pentane, hexane, heptane, octane, nonane, decane etc.; The ester ring type hydro carbons of cyclopentane, cyclohexane, cyclooctane etc.; Benzene,toluene,xylene etc. aromatic hydrocarbon based; Methylene chloride, chloroform, phenixin, 1, the halogenated hydrocarbon of 2-ethylene dichloride, chlorobenzene etc.; And by two or more mixed solvents that form in these etc.Wherein, preferably use ester class, ketone, aromatic hydrocarbon based or by the two or more mixed solvents that form in these.
When polymerizable monomer was carried out polymerization, with respect to the total amount of polymerizable monomer and solvent, the concentration of polymerizable monomer was preferably the scope of 1-60 quality %.
In the pressure-sensitive adhesive composite of the light diffusion adhering agent layer 3 that formation the present invention relates to, in the conduct molecule of (A) composition, have (methyl) acrylate based copolymer of bridging property functional group, as required, also can cooperate the stickability imparting agent.Have no particular limits for the stickability imparting agent, can from sticker in the past, suitably select in the habitual sticker to use as the stickability imparting agent.As this stickability imparting agent, can enumerate rosin series resin (pine gum, Foral, rosin ester system), xylene resin, terpenes-phenolic resin, petroleum resin, coumarone-indene resin, terpene resin, styrene resin, ethylene/acetic acid vinyl, also have the elastic body of styrene-butadiene block polymer, styrene-different propylene block copolymer, ethene-different propylene-styrene block polymer, vinyl chloride/vinyl acetate based polymer, acrylic rubber etc. etc.
Commercially available object lesson as above-mentioned stickability imparting agent has: the waste Chuan Huaxuegongyeshe system of パ イ Application Network リ ス Le KE-359[], the waste Chuan Huaxuegongyeshe system of ス-パ-エ ス テ Le A-75[], the waste Chuan Huaxuegongyeshe system of ス-パ-エ ス テ Le A-100[], the waste Chuan Huaxuegongyeshe system of ス-パ-エ ス テ Le A-125[] etc. rosin ester, the waste Chuan Huaxuegongyeshe system of ペ Application セ Le D125[], the waste Chuan Huaxuegongyeshe system of ペ Application セ Le D160[], リ カ Star Network PCJ[physics and chemistry Off ア イ Application テ Star Network society system] etc. the newtrex ester, ニ カ ノ-gas chemistry society of Le HP-100[Mitsubishi system], ニ カ ノ-gas chemistry society of Le HP-150[Mitsubishi system], the xylene resin of ニ カ ノ-Le H-80 etc., YS Port リ ス -T-115[ヤ ス Ha ラ ケ ミ カ Le society system], マ イ テ Star Network G125[ヤ ス Ha ラ ケ ミ カ Le society system] etc. terpenes-phenolic resin, FTR-6120[Mitsui Chemicals society system], FTR-6100[Mitsui Chemicals society system] etc. petroleum resin etc.
These stickability imparting agents can only be used alone, and the use that also can two or morely combine still, wherein, is given the aspect of effect etc. and considered from stickability, preferably use rosin ester system.
The content of the stickability imparting agent that adds as required in pressure-sensitive adhesive composite of the present invention without limits, for the clinging power that obtains wishing, suitably regulating content gets final product, but, total amount with respect to the stickability resinous principle of forming by (methyl) the acrylate based copolymer and the stickability imparting agent of (A) composition, the content of stickability imparting agent is preferably the scope of 0-80 quality % (amount of solid constituent), more preferably the scope of 0-40 quality % (amount of solid constituent).
Contained (B) composition is that crosslinking chemical describes in the pressure-sensitive adhesive composite of the light diffusion adhering agent layer 3 that then, formation be the present invention relates to.(B) crosslinking chemical of composition, for example can enumerate: polyisocyanate compounds, metallo-chelate, polyepoxides, poly-group with imine moiety, melamine resin, urea resin, twain-aldehyde compound, methylol polymkeric substance, Ethylenimine based compound, metal alkoxide, slaine etc., but be preferably polyisocyanate compounds and/or metallo-chelate.
At this,, can enumerate as the example of polyisocyanate compounds: 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 1,3-xylylene diisocyanate, 1, the aromatic poly-isocyanate of 4-xylylene diisocyanate etc.; The aliphatic polymeric isocyanate of HDI etc.; The ester ring type polyisocyanate of isophorone diisocyanate, hydrogenated diphenyl methane diisocyanate etc. etc.; And their biuret body, isocyanuric acid ester body, also have the reactant with the low molecule active hydrogen-contg compound of ethylene glycol, propylene glycol, neopentyl glycol, trimethylolpropane, castor-oil plant wet goods promptly to add zoarium (for example, the xylylene diisocyanate is that trifunctional adds zoarium) etc.
In addition, as metallo-chelate, can enumerate the coordination compound etc. of the polyvalent metal of tri ethylacetoacetate aluminium, ethyl acetoacetate diisopropoxy aluminium, praseodynium aluminium etc.
As polyepoxides, can enumerate bisphenol type epoxy compound, Bisphenol F type epoxy compound, 1, two (the N of 3-, N-diglycidyl aminomethyl) benzene, 1, two (N, the N-diglycidyl aminomethyl) toluene of 3-, N, N, N ', N '-four glycidyl group-4,4 '-diaminodiphenyl-methane etc.
As poly-group with imine moiety, can enumerate N, N '-diphenyl methane-4,4 '-two (1-aziridine acid amides) [N, N '-ジ Off エ ニ Le メ Application-4,4 '-PVC ス (1-ア ジ リ ジ Application カ Le ボ キ シ ア ミ De)], three (β-'-aziridino propionic acid) trihydroxymethylpropanyl ester, three (β-'-aziridino propionic acid) tetramethylol methane ester, N, N '-Toluene-2,4-diisocyanate, two (1-aziridine acid amides) triethylene melamines of 4-etc.
In the present invention, above-mentioned crosslinking chemical can use separately, and use also can two or morely combine.In addition, its use amount is relevant with the kind of crosslinking chemical, but (methyl) acrylate based copolymer that has bridging property functional group in the molecule with respect to conduct (A) composition of 100 mass parts generally is chosen to be the 0.01-20 mass parts, is preferably the scope of 0.1-10 mass parts.
Constitute the organic particle of conduct (C) composition contained in the pressure-sensitive adhesive composite of the light diffusion adhering agent layer 3 that the present invention relates to, difference with respect to the refractive index of (methyl) acrylate based copolymer of (A) composition is more than 0.03, be preferably more than 0.05, more preferably more than 0.07.During the poor less than 0.03 of refractive index, the light diffusion effect reduces, and is difficult to prevent the interference fringe phenomenon.In addition, the difference of the refractive index of described (methyl) acrylate based copolymer and organic particle is generally below 0.2.
Moreover, be preferably less than 0.5 as the organic particle of (C) composition and (A) difference of the proportion of (methyl) acrylate based copolymer of composition, more preferably less than 0.3, is preferably less than 0.2 especially.The difference of described proportion also can be 0.Diminish by difference described proportion, can make the disperse state homogenising of the organic particle in the pressure-sensitive adhesive composite, its result can access the pressure-sensitive adhesive composite that is used for plasma display of bringing into play the good effect that prevents the interference fringe phenomenon.
In addition, as the organic particle of (C) composition, be preferably the particulate of monodispersity.The particulate of monodispersity can make light spread equably.
In addition, the mean grain size of organic particle is preferably 1-15 μ m, and more preferably 2-10 μ m is preferably 3-5 μ m especially.During mean grain size less than 1 μ m, the secondary aggegation of organic particle takes place sometimes; When surpassing 15 μ m, when pasting, can not get sufficient adhesiveness sometimes.
In addition, the value of mean grain size for measuring with the centrifugal settling penetrant method.Measure to use centrifugal automatic particle size distribution device (the hole field makes made, trade name " CAPA-700 "), the liquid that will be formed by the isopropyl alcohol of the organic particle of 1.2g and 98.8g fully stirs afterwards as the mensuration sample.
Content as the organic particle of (C) composition, with respect to 100 mass parts by (methyl) acrylate based copolymer of (A) composition and the stickability resinous principle formed of the stickability imparting agent that adds as required, be preferably the 0.1-3.0 mass parts, more preferably the scope of 0.1-2.0 mass parts.Be 0.1 mass parts when above, can bring into play the effect that prevents the interference fringe phenomenon; Be 3.0 mass parts when following, total light transmittance is reduced, therefore preferred.
Organic particle as (C) composition, can enumerate for example polyolefin-based resins particle of polyethylene particles, polypropylene particles etc., the macromolecule particle of SDVB copolymer particle, polystyrene particle, acrylic resin particle etc., also can be the cross-linked polymer particle after crosslinked, for example cross-linked styrene divinyl benzene copolymer particle, cross-linked acrylic acid resin beads etc.Can also serve as reasons and be selected from the particle that the two or more multipolymers that carry out copolymerization formation in ethene, propylene, styrene, methyl methacrylate, benzoguanamine, formaldehyde, melamine, the butadiene etc. form.
In the organic particle of above-mentioned (C) composition, SDVB copolymer particle (also containing cross-linked styrene divinyl benzene copolymer particle) is because of transparency height and can obtain good light diffusing preferably.
The SDVB copolymer particle has commercially availablely, for example can suitably use and to combine the trade name " SX-350H " of grinding chemistry (strain) system etc.
Constitute the pressure-sensitive adhesive composite of the light diffusion adhering agent layer 3 that the present invention relates to, as required, also can contain the various adjuvants of ultraviolet light absorber, light stabilizer, antioxidant etc.
After the pressure-sensitive adhesive composite that the present invention relates to is the complex mixing stirring that above-mentioned (A) composition, (B) composition, (C) are become to grade, use the known apparatus for coating of scraper plate coating machine, roll-type knife type coater, reverse roll coating machine, intaglio plate coating machine, chill coating machine etc., the thickness that coating is wished on the face of contrast raising film 2, after the drying, lamination electromagnetic shielded film 4, perhaps on the face of electromagnetic shielded film 4, be coated with the thickness of wishing, after the drying, the lamination contrast improves film 2, obtains optical laminate shown in Figure 11 thus.
The pressure-sensitive adhesive composite that the present invention relates to, as mentioned above, also can directly be coated on contrast improves on film 2, the electromagnetic shielded film 4 etc., but also can be in advance by on support or stripping film, being coated with the thickness of wishing, after obtaining being configured as the light diffusion adhering agent layer 3 of sheet, on contrast raising film 2, electromagnetic shielded film 4 etc., carry out lamination etc.
In addition, the support that uses during as the light diffusion adhering agent layer 3 that obtains being configured as sheet, have no particular limits, for example can use: polyvinyl alcohol (PVA), Triafol T, polymethylmethacrylate, polycarbonate, polysulfones are that resin, polynorbornene are the flaky plastic material that uses in the various opticses of resin etc.; The resin film of tygon, polypropylene, polyethylene terephthalate, Polyvinylchloride, ethylene vinyl acetate copolymer, polyurethane, polystyrene, polyimide etc.; The paper of good quality paper, artistic paper, laminated paper etc.; Metal forming; Spin cloth; Nonwoven fabrics; Perhaps their layered product.The thickness of such support is generally 6-300 μ m, is preferably 12-200 μ m.
In addition, on the face of the opposition side that is provided with support of the light diffusion adhering agent layer 3 that is configured as sheet that the present invention relates to, general lamination is useful on the stripping film of protection pressure-sensitive adhesive composite.As stripping film, for example can use the stripping film after the sheet material of selecting is carried out the lift-off processing of silicones etc. from above-mentioned support.And the light that the present invention relates to diffusion adhering agent layer 3, also can be for not using the shape of above-mentioned support.In this case, the light diffusion adhering agent layer 3 that the present invention relates to is to use with the shape of protecting with stripping film on its two sides.As stripping film, as required, can suitably use light exfoliated stripping film and/or heavy exfoliated stripping film.
Used as required adhesive linkage 5 in the optical laminate 1 of the present invention, so long as have stickability, securely between the adhering film or the bonding agent of film and transparency carrier, any bonding agent all can.For example, can use pressure-sensitive adhesive composite after from the pressure-sensitive adhesive composite that uses at light diffusion adhering agent layer 3, removing organic particle.
On the above-mentioned optical laminate of the present invention 1 that obtains, can also lamination of transparent substrate, complementary color filtrator, prevent reflective filter device, near-infrared absorbing filtrator, neon light absorption filtrator, UVA filtrator etc., form light filter.
Formation as light filter, for example, the contrast of the optical laminate 1 by adhesive linkage 5 lamination Fig. 1 on the face of transparency carrier improves film 2 or electromagnetic shielded film 4, as required by adhesive linkage 5 lamination complementary color filtrator and prevent that the reflective filter device from obtaining on the face of the opposition side of transparency carrier respectively successively.Prevent that the reflective filter device generally is configured in the most external of looking hearer's side of seeing plasma display.Prevent between reflective filter device and the transparency carrier though the complementary color filtrator also can be configured in, also can be configured between optical laminate 1 and the transparency carrier or the inside of optical laminate 1 (plasma display device side).
Above-mentioned transparency carrier gets final product in that visible wavelength region is transparent, can enumerate the mineral compound article shaped of glass, quartz etc. and transparent organic polymer article shaped.As the organic polymer article shaped, can enumerate polyethylene terephthalate (PET), polysulfones, polyethersulfone (PES), polystyrene (PS), PEN (PEN), polyarylate, polyetheretherketone (PEEK), polycarbonate (PC), polypropylene (PP), polyimide, Triafol T (TAC), polymethylmethacrylate (PMMA) etc., but be not limited thereto.Wherein consider preferred polyethylene terephthalate (PET) from price, thermotolerance, transparent aspect.
The complementary color filtrator is display color in order to improve from the luminous excitation of plasma display device and color reproduction scope, power-off etc. and being used to color of regulating light filter.For example, the toning pigment can be distributed to the preparation of compositions film forming behind the adhesive resin, perhaps it be coated on transparency carrier or other the functional filtrator, as required drying, solidify and handle etc. and form.
As the toning pigment of complementary color filtrator, can as required the pigment combination in any be got up to use from the visible region being the known pigment that 380-780nm has maximum absorption wavelength.As can be, can suitably use the spy to open 2000-275432 communique, spy and open 2001-188121 communique, spy and open 2001-350013 communique, spy and open disclosed pigment in the 2002-131530 communique etc. as the known pigment of toning pigment.And in addition, also can use the pigment of anthraquinone system, naphthalene system, azo system, phthalocyanine system, methylene azole series, tetraazatetradecane porphyrin system, the sour cyanines in side system, the cyanines system etc. of the visible light of absorbing yellow light, red light, blue light etc.
As the adhesive resin of complementary color filtrator, can use the resin of vibrin, urethane resin, acryl resin, epoxy resin etc.In addition, as the drying of adhesive resin, the mode of curing, can suitably use: will be from the dry dry solidification mode of the solvent (perhaps spreading agent) of solution (perhaps emulsion), utilization is by the polymerization of the heat of heat, ultraviolet ray, electron ray etc., the curing mode of cross-linking reaction, perhaps utilizes the curing mode etc. of reaction of crosslinked, the polymerization etc. of the functional group of hydroxyl in the resin, epoxy radicals etc. and the isocyanate group in the hardening agent etc.
As the near-infrared absorbing filtrator, the commercially available film that use has a near infrared ray absorption (for example, Japan society's system, commodity No2832 by name that twists flax fibers and weave), the preparation of compositions film forming that perhaps will contain near infrared absorbing coloring matter in adhesive resin perhaps also can and be laminated on the transparent base the composition coating.As near infrared absorbing coloring matter, can use the near infrared range that produces because of xenon gaseous discharge that the front that can be absorbed in plasma display device uses under the situation of light filter, emitted by plasma display device, be the near infrared absorbing coloring matter of the wavelength region may of 800nm-1100nm.Near infrared transmitance that preferably should the zone is below 20%, more preferably below 10%.Simultaneously, the near-infrared absorbing filtrator, preferably in the visible region, be that the wavelength region may of 380nm-780nm has sufficient light penetration.
As near infrared absorbing coloring matter, specifically, can use the polymethine based compound, the cyanines based compound, the phthalocyanine based compound, naphthalene phthalocyanine based compound, the naphthoquinones based compound, the anthraquinone based compound, the dithiol based compound, the imines based compound, the diimine based compound, amine compound, the pyrans based compound, there is not wood (セ リ リ ウ system) based compound in the thiophene, the sour cyanines based compound in side, ketone coordination compound class, the nickel coordination compound class, dithiol is the organic system near infrared absorbing coloring matter of metal complex class, tin oxide, indium oxide, magnesium oxide, titanium dioxide, chromium oxide, zirconia, nickel oxide, aluminium oxide, zinc paste, iron oxide, antimony oxide, massicot, bismuth oxide, lanthana, tungsten oxide etc. inorganic that contains caesium is one or more in the near infrared absorbing coloring matter.
In addition, as adhesive resin, can use the resin of in above-mentioned complementary color filtrator, enumerating.
Neon light absorption filtrator is for when light filter is used for plasma display, can absorb neon light from plasma display device radiation, be the luminescent spectrum of neon atom and being set up.Because the luminescent spectrum zone of neon light is wavelength 550-640nm, preferably be provided with to such an extent that to make the spectrophotometric transmittance of neon light absorption filtrator be below 50% at the 550-640nm place.Neon light absorption filtrator can be with the pigment that utilizes as the pigment that has absorption maximum at least in the wavelength region may of 550-640nm in the past, is dispersed in the adhesive resin of enumerating in the above-mentioned complementary color filtrator and forms.
As the object lesson of this pigment, can enumerate cyanines systems, oxygen alcohol (オ キ ソ ノ-Le) and be, methine system, inferior phthalocyanine or porphyrin system etc.
In addition, as the UVA filtrator, for example ultraviolet light absorber can be dispersed in the adhesive resin and form.As ultraviolet light absorber, can enumerate organic system compound, material that the inorganic based compound of being made up of the zinc paste of finely particulate, cerium oxide etc. forms etc. by benzotriazole, benzophenone etc.As this adhesive resin, can use the resin of in above-mentioned complementary color filtrator, enumerating.
Moreover, as preventing reflection (AR) filtrator, for example, be generally the sandwich construction behind low-index layer and the high refractive index layer alternatively laminated, also can utilize the damp process of the dry process of evaporation or sputter etc. or coating etc. to form.In addition, low-index layer uses Si oxide, magnesium fluoride, fluorine resin etc., and high refractive index layer uses titanium dioxide, zinc sulphide, zirconia, niobium oxide etc.
In addition, for galled spots, the pollution of each layer of the surface that prevents light filter or light filter, as required also can the lamination diaphragm.As diaphragm, can enumerate hard coat (HC layer), stain-proofing layer etc.
Embodiment
Then, the present invention will be described in more detail by embodiment.The present invention is not limited to these examples.
In addition, mist degree and thickness, the refractive index of organic particle and the refractive index of (methyl) acrylate based copolymer of total light transmittance of optical laminate (%) and interference fringe test, light diffusion adhering agent layer are estimated according to following method.
The total light transmittance of＜optical laminate (%) 〉
For the optical laminate of embodiment and comparative example,, measure total light transmittance (%) with integrating sphere type light penetration determinator (Japanese electric look society system, commodity " NDH-2000 " by name) according to JIS K7105-1981.
The interference fringe test of＜optical laminate 〉
The optical laminate of embodiment and comparative example, make made, " ス-パ-カ Star -PN1-600 " with the wild smart mechanism of clipping apparatus (bush clover), be adjusted to the size of 233mm * 309mm, with the copper mesh side surface of thin film to fluorescent light, and be arranged on place apart from this fluorescent light 30cm, confirm interference fringe from the opposition side range estimation.
The mensuration of interference fringe is undertaken by 5 subjects, 5 people all are judged as under the situation that does not produce interference fringe and are designated as ◎, 5 philtrums, 4 people are judged as under the situation that does not produce interference fringe and are designated as zero, 5 philtrum 1-3 people are judged as under the situation that does not produce interference fringe and are designated as △, and 5 people all are judged as under the situation that produces interference fringe and are designated as *.
The mist degree of＜light diffusion adhering agent layer 〉
The stripping film on the two sides of the light diffusion adhering agent layer that is used for optical laminate that obtains in embodiment and the comparative example, the two sides covers with stripping film peeled off remove, according to JIS K7105-1981, with integrating sphere type light penetration determinator (NEC industry (strain) system, commodity " NDH-2000 " by name), measure diffusion transmitance { Hd (%) } and total light transmittance { Ht (%) }, calculate the mist degree of bright dipping diffusion adhering agent layer with following formula.
Mist degree=(Hd/Ht) * 100
The thickness of＜light diffusion adhering agent layer 〉
Constant voltage thickness measurement machine, commodity " PG02 " by name (measure the son footpath and be 5mm) with テ Network ロ Star Network society system are measured.In addition, the stripping film on the two sides by the light diffusion adhering agent layer that is used for optical laminate will obtain in embodiment and the comparative example, that the two sides covers with stripping film is peeled off and is removed, measure for overlapping 10, then measured value is calculated the thickness of bright dipping diffusion adhering agent layer divided by 10.
The refractive index of＜organic particle 〉
Organic particle is downloaded on the microslide, drips the refractive index titer on organic particle, covered is made sample.Examine under a microscope this sample, the refractive index of refractive index titer that is difficult to see the profile of organic particle most is the refractive index of organic particle.
The refractive index of＜(methyl) acrylate based copolymer 〉
According to JIS K7142-1996, measure with (strain) ア go system Abbe refractomecer (Na light source, wavelength are 589nm).
In addition, electromagnetic shielded film that uses in embodiment 1-3 and the comparative example 1 and contrast improve film, and be as described below.
1, electromagnetic shielded film
Preparing thickness and be the pet film (Japan twist flax fibers and weave (strain) system " コ ス モ シ ヤ イ Application A4100 ") of 100 μ m and single face, to have carried out the thickness that melanism handles be the Copper Foil (Furukawa サ-キ Star ト Off オ イ Le (strain) system, goods number are BW-S) of 10 μ m.Use the bonding agent that constitutes by urethane resin (military field pharmaceutical industries (strain) system, mix) with the mass ratio of ケ ラ Star Network A310 (host)/ ケ ラ Star Network A10 (hardening agent)/ethyl acetate=12/1/21, to paste with the surface and the described pet film of the melanism treated side opposition side of described Copper Foil, obtain the layered product of the structure of pet film/bond layer/Copper Foil.
Then, Copper Foil side at the layered product that obtains, coating is the resist solution of principal ingredient with the casein, drying obtains photo-sensitive resin, the mask that use is formed with figure carries out the ultraviolet exposure that is adjacent to, and exposure back water develops, be cured processing after, under 100 ℃ temperature, toast, form the resist figure.As the figure of mask, using spacing is that 300 μ m, live width are the figure of 10 μ m.Be formed with on the above-mentioned layered product of resist figure, from resist figure side, after spraying solution of ferrous chloride (Baum is 42, temperature be 30 ℃) and carrying out etching, wash, carrying out resist with aqueous slkali then peels off, wash after peeling off and drying, obtain the electromagnetic shielded film (copper mesh laminated film) of the structure of pet film/bond layer/copper mesh.The aperture opening ratio of copper mesh is 80%, thickness is 10 μ m.
2, contrast improves film
50 mass parts as the acrylic acid of ionizing radiation curable composition to cumenyl phenoxy ethyl (Xin Zhong village chemical industry society system, commodity are called " NK エ ス テ Le ACMP-1E ", solid component concentration is 100 quality %, simple function group), the oxirane modified bisphenol A diacrylate of 50 mass parts (Xin Zhong village chemical industry society system, commodity are called " NK エ ス テ Le ABE-300 ", solid component concentration is 100 quality %, two functional groups), the 1-hydroxy cyclohexyl phenylketone as Photoepolymerizationinitiater initiater of 3 mass parts (チ バ ス ペ シ ヤ Le テ イ ケ ミ カ Le ズ society system, イ Le ガ キ ユ ア 184, solid component concentration is 100 quality %), 0.1 the 2-acrylyl oxy-ethyl succinic acid as the cementability improving agent of mass parts (Xin Zhong village chemical industry society system, commodity are called " NK エ ス テ Le A-SA ", solid component concentration is 100 quality %) mix, obtain the ionizing radiation solidification compound.
Use the scraper plate coating machine ionizing radiation solidification compound that obtains to be coated on transparent base material (eastern レ (strain) system of polyethylene terephthalate system, commodity are called " Le ミ ラ-T60 ", thickness is 50 μ m, surfaceness (Ra) is 0.001 μ m (hereinafter referred to as " a PET film ")) on, make that the thickness (target film thickness) of ionizing radiation curable layer (semi-cured state) is 100 μ m, described ionizing radiation solidification compound with coating is clipped in overturn the roller die tool of shape and the state between the described PET film of forming, and irradiation ultraviolet radiation (uses fusion H bulb, illumination is 400mW/cm
2, light quantity is 300mJ/m
2), form lens section 21 as shown in Figure 5.
To in described ionizing radiation curing composition, be dispersed with material, be filled between the lens section 21 that forms by above-mentioned operation, and (use fusion H bulb, illumination to be 400mW/cm by irradiation ultraviolet radiation as the carbon black of light absorption particle
2, light quantity is 300mJ/m
2), form blackstreak, make the contrast with lens section 21 and light absorption department 22 shown in Figure 5 and improve film 2.
At this, the specification of the contrast raising film 2 in the present embodiment is as described below.In addition, aperture opening ratio is represented to observe contrast when improving layer from the luminescent layer side of PDP, with respect to the ratio of the area of the light transmission of removing blackstreak of gross area; Trapezoidal cone angle is represented: the trapezoidal chamfered portion of section shape is with the normal angulation of contrast raising layer with the boundary surface (exiting surface) of PET film.
Aperture opening ratio: 75%
The also column pitch of lens section 21: 100 μ m
The refractive index of the raw material of lens section 21: 1.56
The refractive index of transparent resin: 1.55
The upper bottom surface width of light absorption department 22: 6 μ m
Trapezoidal cone angle: 5 °
The particle diameter of light absorption particle: 5 μ m
The concentration of light absorption particle: 25%
The butyl acrylate of 77 mass parts, the ethyl acrylate of 20 mass parts, the acrylic acid of 3 mass parts and the azoisobutyronitrile as polymerization initiator of 0.3 mass parts are added in the ethyl acetate of 200 mass parts, stirred 17 hours down at 65 ℃, the solution that obtain containing refractive index and be 1.47, proportion is 1.20, weight-average molecular weight is 800,000 acrylate copolymer (A1), the solid component concentration of this solution is 29 quality %.
To be the organic particle (crosslinked particle of monodispersity that forms by the SDVB multipolymer of 0.187 mass parts with respect to the described acrylate copolymer (A1) of 100 mass parts, mean grain size is 3.5 μ m, refractive index is 1.59, proportion is 1.05, combine chemistry (strain) system of grinding: SX-350H), (ア Le ミ キ レ-ト) is that crosslinking chemical (is combined and ground chemistry (strain): M-5A) to the aluminium chelate compound of 4 mass parts, the methyl ethyl ketone of 30 mass parts, and the toluene of 5 mass parts, under agitation, add to successively in the solution of aforesaid propylene acid ester copolymer (A1), obtain being used for the pressure-sensitive adhesive composite of light diffusion adhering agent layer.
Then, with the scraper plate coating machine the described pressure-sensitive adhesive composite that is used for light diffusion adhering agent layer is applied to the lift-off processing face side of pet film (リ Application テ Star Network (strain) system, trade name " SP-PET38T103-1 ") as heavy exfoliated stripping film.Afterwards, carried out dried 1 minute under 90 ℃, obtaining thickness on described pet film is the light diffusion adhering agent layer of 25 μ m.And, on the bonding plane that exposes of this light diffusion adhering agent layer, cover the light exfoliated stripping film (リ Application テ Star Network (strain) system, trade name " SP-PET381031H (AF) ") of polyethylene terephthalate.
Then, peel off the described light exfoliated stripping film (リ Application テ Star Network (strain) system, trade name " SP-PET381031H (AF) ") of two sides, bonding plane is pasted on the face opposite with the copper mesh face of electromagnetic shielded film with the light diffusion adhering agent layer that is used for optical laminate of stripping film covering.Then, the exfoliated stripping film of weight (リ Application テ Star Network (strain) system, trade name " SP-PET38T1O3-1 ") of another side that covering is used for the adhesion sheet of plasma display is peeled off, paste contrast and improve on the film, obtain the optical laminate of layer structure as shown in Figure 1.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
Except that the thickness of light diffusion adhering agent layer is 10 μ m, obtain the optical laminate of layer structure as shown in Figure 1 similarly to Example 1.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
Except that the thickness of light diffusion adhering agent layer is 50 μ m, obtain the optical laminate of layer structure as shown in Figure 1 similarly to Example 1.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
The butyl acrylate of 68.5 mass parts, the methyl acrylate of 30 mass parts, the 2-Hydroxy ethyl acrylate of 1 mass parts, the acrylic acid amides of 0.5 mass parts and the azoisobutyronitrile as polymerization initiator of 0.3 mass parts are added in the ethyl acetate of 200 mass parts, stirred 17 hours down at 65 ℃, the solution that obtain containing refractive index and be 1.48, proportion is 1.22, weight-average molecular weight is 800,000 acrylate copolymer (A2), the solid component concentration of this solution is 29 quality %.
To be the organic particle (crosslinked particle of monodispersity that forms by the SDVB multipolymer of 0.0435 mass parts with respect to the described acrylate copolymer (A2) of 100 mass parts, mean grain size is 3.5 μ m, refractive index is 1.59, proportion is 1.05, combine chemistry (strain) system of grinding: SX-350H), 0.45 being trifunctional, the xylylene diisocyanate of mass parts adds zoarium (comprehensive chemistry (strain) system of grinding: TD-75), 0.06 the 3-glycidoxypropyltrime,hoxysilane of mass parts (SHIN-ETSU HANTOTAI's chemical industry (strain) system: KBM403), the toluene of the methyl ethyl ketone of 30 mass parts and 5 mass parts, under agitation, add to successively in the solution of aforesaid propylene acid ester copolymer (A2), obtain being used for the pressure-sensitive adhesive composite of light diffusion adhering agent layer.
Then, with the scraper plate coating machine the described pressure-sensitive adhesive composite that is used for light diffusion adhering agent layer is applied to the lift-off processing face side of pet film (リ Application テ Star Network (strain) system, trade name " SP-PET38T103-1 ") as heavy exfoliated stripping film.Afterwards, carried out dried 1 minute under 90 ℃, obtaining thickness on described pet film is the light diffusion adhering agent layer of 25 μ m.And, on the bonding plane that exposes of this light diffusion adhering agent layer, cover the light exfoliated stripping film (リ Application テ Star Network (strain) system, trade name " SP-PET381031H (AF) ") of polyethylene terephthalate.
Then, obtain the optical laminate of layer structure as shown in Figure 1 similarly to Example 1.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
The solution of the acrylate copolymer (A2) that use embodiment 4 obtains, except that (combine chemistry (strain) system of grinding: addition SX-350H) changes to from 0.0435 mass parts 0.87 mass parts, obtains being used for the pressure-sensitive adhesive composite of light diffusion adhering agent layer similarly to Example 4 with described organic particle.
Then, obtain the optical laminate of layer structure as shown in Figure 1 similarly to Example 1.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
Except that layer structure as shown in Figure 2, obtain the optical laminate of embodiment 6 similarly to Example 1.Obtaining the total light transmittance (%) of optical laminate and the mist degree of interference fringe test and light diffusion adhering agent layer estimates according to said method.The result is shown in the 1st table.
Embodiment 7
Except that layer structure as shown in Figure 3, obtain the optical laminate of embodiment 7 similarly to Example 1.Obtaining the total light transmittance (%) of optical laminate and the mist degree of interference fringe test and light diffusion adhering agent layer estimates according to said method.The result is shown in the 1st table.
Comparative example 1
The solution of the acrylate copolymer (A1) that use embodiment 1 obtains (is combined and is ground chemistry (strain) system: SX-350H), obtain pressure-sensitive adhesive composite similarly to Example 1 except that not containing described organic particle.
Then, use the pressure-sensitive adhesive composite that obtains to obtain the layered product of layer structure as shown in Figure 1 similarly to Example 1.Contrast at this layered product improves on the face of film 2, by pressure-sensitive adhesive composite (thickness is 25 μ m) the lamination anti-dazzle film (リ Application テ Star Network (strain) system, trade name " AGPET100 * 5 ") that obtains, obtain the optical laminate of the comparative example 1 of layer structure as shown in Figure 4.The mist degree of total light transmittance of the optical laminate that obtains (%) and interference fringe test and light diffusion adhering agent layer is estimated according to said method.The result is shown in the 1st table.
Shown in the 1st table, the embodiment 1,6 and 7 of optical laminate of diffusion bonding agent layer that use has the thickness of the mist degree of regulation and layer all can bring into play and the total light transmittance of comparative example 1 equal extent and interference fringe phenomenon prevent effect, optical laminate of the present invention 1 substitute as a comparative example is effective.In addition, the total light transmittance of embodiment 2 and 4 optical laminate is suitable with embodiment 1,6 and 7, also can bring into play the effect that prevents the interference fringe phenomenon, and, though the total light transmittance of the optical laminate of embodiment 3 and 5 is lower, but, also can bring into play the effect that prevent interference fringe phenomenon suitable with embodiment 1,6 and 7.
Industrial applicibility
Optical laminate of the present invention is suitable as the optical laminating that is used for filter of plasma display Body.
Claims (7)
1, a kind of optical laminate that is used for plasma display, this optical laminate comprises that electromagnetic shielded film and contrast with wire netting improve film, the light filter that is used for plasma display, it is characterized in that, on the face of this electromagnetic shielded film and/or this contrast raising film, dispose the light diffusion adhering agent layer that contains organic particle.
2, the optical laminate that is used for plasma display according to claim 1, wherein, the mist degree of described light diffusion adhering agent layer is 5-60%.
3, the optical laminate that is used for plasma display according to claim 1, wherein, the thickness of described light diffusion adhering agent layer is 1-100 μ m.
4, according to any described optical laminate that is used for plasma display among the claim 1-3, wherein, the pressure-sensitive adhesive composite that constitutes described light diffusion adhering agent layer contains: (A) have (methyl) acrylate based copolymer, (B) crosslinking chemical of bridging property functional group in the molecule and (C) be more than 0.03 with respect to the difference of the refractive index of this (methyl) acrylate based copolymer and mean grain size is the organic particle of 1-15 μ m.
5, the optical laminate that is used for plasma display according to claim 4, wherein, the crosslinking chemical of described (B) composition is polyisocyanate compounds and/or metallo-chelate.
6, the optical laminate that is used for plasma display according to claim 4, wherein, with respect to the stickability resin of (methyl) acrylate based copolymer that contains (A) composition of 100 mass parts, described pressure-sensitive adhesive composite contains the organic particle of (C) composition of 0.1-3.0 mass parts.
7, the optical laminate that is used for plasma display according to claim 4, wherein, the organic particle of described (C) composition contains the SDVB multipolymer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008086999 | 2008-03-28 | ||
| JP2008086999 | 2008-03-28 | ||
| JP2009062739 | 2009-03-16 |
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| CN101546005A true CN101546005A (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101193621A Pending CN101546005A (en) | 2008-03-28 | 2009-03-24 | Optical laminate for plasma display |
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| CN102981199A (en) * | 2012-11-13 | 2013-03-20 | 东北大学秦皇岛分校 | Surface plasma nanometer ring light filter |
| CN103119522A (en) * | 2010-09-30 | 2013-05-22 | 大日本印刷株式会社 | Volume hologram transfer foil |
| CN105295759A (en) * | 2015-10-14 | 2016-02-03 | 东莞市纳利光学材料有限公司 | OCA (Optical Clear Adhesive) optical film with anti-electromagnetic wave effect and preparation method thereof |
| CN106170522A (en) * | 2014-03-28 | 2016-11-30 | 王子控股株式会社 | Double-faced pressure-sensitive adhesive sheet and optical component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103119522A (en) * | 2010-09-30 | 2013-05-22 | 大日本印刷株式会社 | Volume hologram transfer foil |
| CN102981199A (en) * | 2012-11-13 | 2013-03-20 | 东北大学秦皇岛分校 | Surface plasma nanometer ring light filter |
| CN106170522A (en) * | 2014-03-28 | 2016-11-30 | 王子控股株式会社 | Double-faced pressure-sensitive adhesive sheet and optical component |
| CN105295759A (en) * | 2015-10-14 | 2016-02-03 | 东莞市纳利光学材料有限公司 | OCA (Optical Clear Adhesive) optical film with anti-electromagnetic wave effect and preparation method thereof |
| CN105295759B (en) * | 2015-10-14 | 2018-05-08 | 东莞市纳利光学材料有限公司 | A kind of OCA optical adhesive films with anti-electromagnetic wave effect and preparation method thereof |
| CN105404039B (en) * | 2015-12-23 | 2018-10-26 | 东莞市纳利光学材料有限公司 | A kind of liquid crystal display and preparation method thereof with anti-electromagnetic wave OCA optical adhesive films |
| CN108472941A (en) * | 2015-12-30 | 2018-08-31 | 3M创新有限公司 | Absorb the binder film and correlation technique of infrared ray |
| CN108472941B (en) * | 2015-12-30 | 2021-06-15 | 3M创新有限公司 | Infrared absorbing adhesive films and related methods |
| CN108459365A (en) * | 2017-02-20 | 2018-08-28 | 琳得科株式会社 | Image display with position detecting function |
| CN110268310A (en) * | 2017-03-06 | 2019-09-20 | 日东电工株式会社 | Liquid crystal display panel and liquid crystal display device |
| CN110806611A (en) * | 2018-08-06 | 2020-02-18 | 张家港康得新光电材料有限公司 | Optical diaphragm and ambient light sensor with same |
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Application publication date: 20090930 |