CN105487158A - Thin type polarizer and display used thereof - Google Patents
Thin type polarizer and display used thereof Download PDFInfo
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- CN105487158A CN105487158A CN201510917180.4A CN201510917180A CN105487158A CN 105487158 A CN105487158 A CN 105487158A CN 201510917180 A CN201510917180 A CN 201510917180A CN 105487158 A CN105487158 A CN 105487158A
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- polarizer
- pressure
- sensitive adhesive
- adhesive layer
- polarizing plate
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- 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
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- 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
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a thin type polarizer and a display used thereof. To impart good durability to a polarizing plate in which a pressure-sensitive adhesive layer is disposed on at least one surface of a polarizer even in a hot environment, to make it possible to stack a polymer film thereon without making the work troublesome, to obtain a composite polarizing plate capable of reduction in thickness, by stacking a polymer film such as a retardation film on the polarizing plate with the pressure-sensitive adhesive layer, and to apply the composite polarizing plate to an image display device. The polarizing plate is a polarizing plate (10) in which a pressure-sensitive adhesive layer (2) is disposed on at least one surface of a polarizer (1), wherein the pressure-sensitive adhesive layer (2), includes a pressure-sensitive adhesive which exhibits a storage modulus of 0.15-1 MPa in a temperature range of 23-80[deg.]C. The pressure-sensitive adhesive layer (2) which exhibits a high storage modulus suppresses a dimensional change due to expansion and contraction of the polarizer (1) caused in a hot environment. Composite polarizing plates (15, 16) are obtained by locating polymer films (6) such as retardation films on the outsides of such pressure-sensitive adhesive layers (2), and an image display device is obtained by combining those with an image display element such as a liquid crystal cell (20).
Description
The divisional application that the application is the applying date is on February 13rd, 2008, Chinese application number is the Chinese patent application of 200810009732.1.
Technical field
The present invention relates to the Polarizer used in the image display devices such as liquid crystal indicator and the image display device being configured with this Polarizer.Polarizer of the present invention, has slim light-weighted formation and excellent durability in high temperature environments, therefore particularly useful in the various image display devices attempting to improve the slim lightweight of assembly self and the mobile purposes of permanance.
Background technology
Liquid crystal indicator is applied to desk-top computer and electronic watch etc. all the time, but in recent years, its purposes is expanded rapidly.That is, from mobile apparatus such as mobile phones to large-scale tv machine, regardless of screen size, all liquid crystal indicator is brought into use.In addition, except liquid crystal indicator, organic electroluminescent (organic EL) display device also has the tendency of increase centered by mobile purposes.For the Polarizer used in these image display devices, not only to its need increase, but also require to be applicable to the performance of each purposes.
Usual widely used Polarizer in image display device as above is with dichromatism pigment gas absorption quantity and the two sides of polarizer (polarisation) that obtains is the formation of the protective clear layer of representative carries out manufacturing with tri acetyl cellulose membrane by aqueous tackifier lamination on polyvinyl alcohol resin film.Under the state of being pasted in this case or as required the various optical layers such as the phase retardation film with optical characteristics or optical compensation films by bonding agent or tackifier, paste on the image-displaying member such as liquid crystal cell or organic EL display element and use.
Fig. 4 is the constructed profile of the general example of the composite polarizing plate representing this existing Polarizer and upper lamination thereof polarizer.That is, protective clear layer 4,5 is set on the two sides of polarizer 1, forms Polarizer 11.In addition, polarizer 6 is pasted by formation of pressure-sensitive adhesive layer 3 in protective clear layer 5 side wherein, and in its arranged outside for pasting the formation of pressure-sensitive adhesive layer 7 of image-displaying member etc., forms composite polarizing plate 17.Its surface of temporary protection is used for until the partition 9a pasting image display device etc. is convention in the arranged outside of pressure-sensitive adhesive 7.
But, recently in the image display device of the mobile purposes such as mobile phone, from the viewpoint of design aspect and portability, carrying out attenuating thinning for component integration.Certainly, for the Polarizer wherein used, also require further slim lightweight.
In addition, relate to various field of employment due to mobile, therefore while slim light weight is formed, also require and existing equal or better permanance.
If in order to tackle slimming as above and lightweight requirements and merely by the polarizer of Polarizer or protective clear layer thinning; in operability when then polarizer to have in the crackly characteristic of its draw direction and to carry out operation by the mode of tackifier lamination protective clear layer etc., obtain thin type light-weight Polarizer and there is restriction.In addition; also attempt replacing the structure arranging protective clear layer 4,5 on the two sides of polarizer 1 as shown in Figure 4; omit the protective clear layer 5 of the side of pasting with other blooming such as polarizer 6 grade; directly other optical films such as polarizer 6 are pressed onto on polarizer 1 by tackifier or pressure-sensitive adhesive, thus make Polarizer thinning.But in this case, when being particularly positioned under hot environment, the flexible change in size with polarizer 1 increases, and there is the inevitable insufficient problem of permanance.
On the other hand, it is also proposed with the tri acetyl cellulose membrane of other resin replacement as protective clear layer in the past.Such as; the resin solution being coated with in the one or two sides of the polarizer be made up of hydrophilic polymer and being formed by the solvent not dissolving this film is disclosed in Japanese Unexamined Patent Publication 2000-199819 publication (patent documentation 1); and obtain the Polarizer being with transparent thin film layer, also describe the protective seam configuring hyaline membrane formation on this transparent thin film layer.The diaphragm and the Polarizer formed that are formed by the adhesive layer pressure ring shape olefine kind resin be made up of the potpourri of polyvinyl alcohol tackifier and two component adhesive at least one face of polyvinyl alcohol polarizer is disclosed in Japanese Unexamined Patent Publication 2000-321430 publication (patent documentation 2).In addition, the Polarizer that at least one face of the polarizer formed at polyvinyl alcohol (PVA) based sheet is formed by the diaphragm of waterborne polymeric-isocyanates adhesive layer pressure norbornene resin formation is disclosed in Japanese Unexamined Patent Publication 2001-305345 publication (patent documentation 3).
Hyaline membrane disclosed in these patent documentations 1 ~ 3 or cyclic olefin resin film (norbornene resin film also roughly synonym) are if be made up of the film with polarizer function, then can cut down the component that image display device is pasted, obtain slim Polarizer.
But, when using tackifier in the lamination of polarizer and transparent polymer film, owing to this tackifier to be applied on polarizer and after making its dry or solidification, the mode of laminated polymeric thing film, carrying out lamination, that the optic axis of film is had a certain degree relative to the axle of polarizer is very difficult, therefore in the image display device of mobile purposes the composite polarizing plate of useful especially ellipse or rotatory polarization mode easy formation in existing problems.
In addition, foregoing norbornene resin film pastes on polarizer by known use bonding agent (pressure-sensitive adhesive).Such as, laminated thermoplastic saturated norbornene resin film is disclosed at least one face of polarizer in Japanese Unexamined Patent Publication 6-51117 publication (patent documentation 4) as the Polarizer of protective seam.In addition; disclose in Japanese Unexamined Patent Publication 8-43812 publication (patent documentation 5) in the Polarizer of the both sides lamination diaphragm of polarizer; at least one of its diaphragm is made up of the diaphragm simultaneously with phase retardation film function; as the example of diaphragm with phase retardation film function, list thermoplastic norbornene resinoid.In these patent documentations 4 and 5, as the bonding agent used in the lamination of polarizer and norbornene resin film, list natural rubber, synthetic rubber elastic body, vinyl chloride/vinyl acetate co-polymer, Polyvinylalkylethers, polyacrylate, modified polyolefin hydrocarbon resin class bonding agent etc.But; these publications are all defined in the explanation of the formation method of adhesive phase or the laminating method with protective seam; although alternatively achieve the object forming thin polarizer, in permanance raising, do not record characteristic or the effect of its concrete bonding agent.
Therefore, the Polarizer field of slimming and light-weighted mobile purposes is realized in the reduction by component parts, require exploitation a kind of thin polarizer, even if its maintenance thin and while good durability, employ with the lamination operation of the polymer film or other optical layers with optical characteristics in it manufactures the also very high pressure-sensitive adhesive of degree of freedom.
Summary of the invention
The object of the invention is to the good durability by giving the Polarizer arranging formation of pressure-sensitive adhesive layer at least one side of polarizer (polarisation) in high temperature environments, and the pressure-sensitive adhesive used has releasable, thus thereon laminated polymeric thing film time, can manufacture when workability is not miscellaneous in the lamination operation of polarizer and polymer film.The polymer film such as lamination polarizer on the Polarizer that another object of the present invention is to be provided in this band pressure-sensitive adhesive and the composite polarizing plate of overall thinning can be realized.In addition, another object of the present invention is these Polarizers or composite polarizing plate to be applied to image display device.
To achieve these goals, the formation of Polarizer of the present invention is: at least one side of polarizer, arrange formation of pressure-sensitive adhesive layer, and this formation of pressure-sensitive adhesive layer shows the store elastic modulus of 0.15 ~ 1MPa under the temperature range of 23 ~ 80 DEG C.By arranging the hard formation of pressure-sensitive adhesive layer of such display higher store elastic modulus, the change in size of Polarizer under hot environment can be made little.
It is effective for arranging above-mentioned formation of pressure-sensitive adhesive layer at the one side of polarizer and arrange the protective seam comprising transparent resin film on the other surface.In this Polarizer, polarizer can show dichromatic pigment gas absorption quantity and the film that obtains is formed on polyvinyl alcohol based resins film by iodine or dichroic organic dye etc.In addition, the thickness of formation of pressure-sensitive adhesive layer is preferably 1 ~ 40 μm.In addition, preferred formation of pressure-sensitive adhesive layer has releasable, and in its exposed surface, there is the partition (separator) through the process of silicone release agent.
In addition, according to the present invention, also provide a kind of composite polarizing plate, it configures polymer film in the formation of pressure-sensitive adhesive layer side of the Polarizer with above-mentioned formation of pressure-sensitive adhesive layer.Polymer film as used herein, is formed by having the film of phase differential in face, and has the function of protective seam and polarizer concurrently, can obtain being reduced and slim light-weighted composite polarizing plate by component number.In addition, the slim composite polarizing plate of ellipse or rotatory polarization pattern can be obtained thus.
Above-mentioned Polarizer or composite polarizing plate can the optical layers of other display optical function of lamination further.Such as; the one side of polarizer arranges above-mentioned formation of pressure-sensitive adhesive layer, the Polarizer of protective clear layer is set on the other surface or in the composite polarizing plate of the polymer films such as this formation of pressure-sensitive adhesive layer side configuration phase difference plate; on the opposing face of the protective clear layer closely sealed with polarizer, the surface-treated layers such as hard conating, anti-reflection layer, anti-dazzle photosphere can be had.
In addition; the one side of polarizer above-mentioned formation of pressure-sensitive adhesive layer is set and arrange on the other surface as required protective clear layer Polarizer or in the composite polarizing plate of the polymer films such as this formation of pressure-sensitive adhesive layer side configuration phase difference plate; in the opposition side (when arranging protective clear layer for outside it) in the face contacted with the described formation of pressure-sensitive adhesive layer of polarizer; reflecting plate or semi-penetration plate can be pasted, and form the slim composite polarizing plate of reflection-type or translucent reflective type.
In addition; polarizer one side above-mentioned formation of pressure-sensitive adhesive layer is set and arrange on the other surface as required protective clear layer Polarizer or in the composite polarizing plate of the polymer films such as this formation of pressure-sensitive adhesive layer side configuration phase difference plate; in the opposition side (when arranging protective clear layer for outside it) in the face contacted with the described formation of pressure-sensitive adhesive layer of polarizer; also can paste brightness and improve film, and form the utilizable slim composite polarizing plate of brightness raising system.
Image display device of the present invention, has and resembles liquid crystal cell or the such image-displaying member of organic EL display element and above-mentioned Polarizer or composite polarizing plate.In this image display device, at least one side of image-displaying member configures described Polarizer or composite polarizing plate.
Invention effect
Polarizer of the present invention be at least one side of polarizer, be configured in 23 ~ 80 DEG C temperature range in show the Polarizer of the formation of pressure-sensitive adhesive layer of the store elastic modulus of regulation.And, in the outside of this formation of pressure-sensitive adhesive layer, by lamination, other has polymer film, the such as polarizer of optical function, the sheet number of the film pasted on image-displaying member can be reduced, obtain the formation of more slim light weight, meanwhile, even if formation of pressure-sensitive adhesive layer also can suppress the change in size of shrinking with polarizer in high temperature environments, the thin polarizer of excellent durability and slim composite polarizing plate can be obtained.In addition, by itself and the image-displaying member such as liquid crystal cell or organic EL display element being combined, thinning can be obtained and the image display device of excellent durability.
Accompanying drawing explanation
Fig. 1 represents that figure is cutd open in the signal of the example that the layer of Polarizer of the present invention is formed.
Fig. 2 is the constructed profile representing the example that the layer of composite polarizing plate of the present invention is formed.
Fig. 3 is the constructed profile representing example composite polarizing plate of the present invention being installed to liquid crystal panel.
Fig. 4 is the constructed profile representing existing Polarizer and the general example of the composite polarizing plate of lamination polarizer thereon.
Symbol description:
1 polarizer
2 formation of pressure-sensitive adhesive layer (store elastic modulus is high)
3 formation of pressure-sensitive adhesive layer (existing)
4,5 protective clear layers
6 polymer films (polarizer)
7 formation of pressure-sensitive adhesive layer
8 other optical layers
9,9a partition
10 Polarizers
11 Polarizers (existing)
15,16 composite polarizing plates
17 composite polarizing plates (existing)
20 liquid crystal cells
Embodiment
Below, suitably present invention will be described in detail with reference to the accompanying.Fig. 1 is the schematic cross-section of the example that the layer showing Polarizer of the present invention is formed.With reference to Fig. 1, Polarizer 10 of the present invention is the Polarizers arranging formation of pressure-sensitive adhesive layer 2 at least one side of polarizer 1.Further, this formation of pressure-sensitive adhesive layer 2 is made up of the formation of pressure-sensitive adhesive layer of the store elastic modulus showing 0.15 ~ 1MPa in the temperature range of 23 ~ 80 DEG C.At any temperature that this said " showing the store elastic modulus of 0.15 ~ 1MPa in the temperature range of 23 ~ 80 DEG C " refers in this temperature range, store elastic modulus is all the value in above-mentioned scope.Store elastic modulus usually rises with temperature and reduces gradually, if therefore the store elastic modulus of 23 DEG C and 80 DEG C all in above-mentioned scope, then can be observed at the temperature of this scope, show the store elastic modulus of above-mentioned scope.
The formation of pressure-sensitive adhesive layer of the so high store elastic modulus of display can be set on the two sides of polarizer 1; but generally speaking; arrange the formation of pressure-sensitive adhesive layer 2 showing store elastic modulus as above at the one side of polarizer 1, it is favourable that another face of polarizer 1 arranges the protective seam 4 comprising transparent resin film.The exposed surface of formation of pressure-sensitive adhesive layer 2 configures partition 9, what paste by this surperficial temporary protection until with other component is convention.
Polarizer 1 has the film selecting linearly polarized light function from the natural light of incidence, such as, can use the light polarizing film of dichromatism pigment gas absorption quantity on polyvinyl alcohol based resins film.The polyvinyl alcohol resin forming polarizer 1 can by obtaining the saponification of polyvinyl acetate resin.As polyvinyl acetate resin, except as except the independent polymeric polyvinyl acetate (PVA) of vinyl acetate, can also illustrate vinyl acetate and can with the interpolymer of other monomer of its copolymerization.As with other vinyl acetate copolymerized monomer, can enumerating such as: unsaturated carboxylic acid class, olefines, vinyl ethers, unsaturated sulfonic acid class, there is the acrylic amide etc. of ammonium.The saponification degree of polyvinyl alcohol resin, is generally about 85 ~ about 100 % by mole, preferably more than 98 % by mole.This polyvinyl alcohol resin can modification further, such as, can use with the polyvinyl formal of aldehydes modification or polyvinyl acetal etc.In addition, the degree of polymerization of polyvinyl alcohol resin, is generally about 1000 ~ about 10000, and preferably about 1500 ~ about 5000.
The film that described polyvinyl alcohol resin is made can use as the unstretching film of polarizer 1 (former anti-Off ィ Le system).The film build method of polyvinyl alcohol resin is not particularly limited, and can form film by known method.The thickness comprising the unstretching film of polyvinyl alcohol resin is not particularly limited, such as, be about 1 μm ~ about 150 μm.If consider the easiness etc. stretched, then preferably its thickness is more than 10 μm.
Polarizer 1 through by the operation of such polyvinyl alcohol resin film uniaxial tension, with dichromatism pigment, the dyeing of polyvinyl alcohol resin film is made its operation of adsorbing dichromatism pigment, be adsorbed with the operation of the polyvinyl alcohol resin film of dichromatism pigment and this boric acid aqueous solution process with boric acid aqueous solution process after the operation of carrying out washing manufacture.As dichromatism pigment, iodine or dichromatic organic dyestuff can be used.
At least one side of polarizer 1 forms formation of pressure-sensitive adhesive layer 2.So-called pressure-sensitive adhesive, refer to only by compacting adhere to other material surface, in addition it is peeled off from sticky surface time, even if adherend there is intensity also can the viscoelastic body of trace slash removing hardly, also referred to as bonding agent.Formation of pressure-sensitive adhesive layer 2 can by the past for being formed based on the various bonding agents of image display device.Such as, acrylic compounds, rubber-like, polyurethanes, silicone, polyvingl ether etc. are had.In addition, also can be energy ray-curable, thermohardening type etc.Wherein, the bonding agent of polymkeric substance based on the acrylic resin that preferably clear, weatherability, thermotolerance etc. are excellent.
As acrylic adhesives, be not particularly limited, can be applicable to using (methyl) the esters of acrylic acid base polymers such as (methyl) butyl acrylate, (methyl) ethyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) acrylic acid-2-ethyl caproite and using the copoly type base polymers of more than two kinds such as these (methyl) acrylate.In addition, can copolymerized polar monomer in these base polymers.As polar monomer, can enumerate such as: (methyl) acrylic acid, (methyl) 2-hydroxypropyl acrylate, (methyl) acrylic acid-2-hydroxyl ethyl ester, (methyl) acrylamide, (methyl) acrylic acid-2-N, N-dimethylaminoethyl, (methyl) glycidyl acrylate etc. have the monomer of carboxyl, hydroxyl, amide group, amino, epoxy radicals etc.
These acrylic adhesives can be used alone certainly, but usually and use crosslinking chemical.As crosslinking chemical, the divalent that forms carboxylic metallic salt between carboxyl can be illustrated or between polyvalent metal ion and carboxyl, form the poly epoxy compounds forming ester bond between the polyamine compounds of amido link and carboxyl or the polyisocyanate compound etc. forming amido link between polyol compound and carboxyl.Wherein, polyisocyanate compound widely uses as organic crosslinking chemical.
So-called energy ray-curable bonding agent, refer to there is the irradiation being subject to ultraviolet or electron ray homenergic ray and the character of solidifying, at energy-ray pre-irradiation, there is cohesive and be close to adherends such as films, be there is the bonding agent of the character being cured by the irradiation of energy-ray, can regulating closing force.As energy ray-curable bonding agent, particularly preferably use ultraviolet-curing adhesive.Energy ray-curable bonding agent generally with acrylic adhesives and energy-ray polymerizable compound for major component.Usually coordinate crosslinking chemical further, and also can coordinate light trigger, photosensitizing agent etc. as required.
In the adhesive composition for the formation of formation of pressure-sensitive adhesive layer 2, except above-mentioned base polymer and crosslinking chemical, as required in order to regulate the bounding force, cohesive force, viscosity, elastic modulus, glass transition temperature etc. of bonding agent, also can coordinating example as natural materials or the adjuvant as suitable in resene, tackifying resin, antioxidant, dyestuff, pigment, defoamer, anticorrosive, Photoepolymerizationinitiater initiater etc. of synthetic.In addition, the formation of pressure-sensitive adhesive layer of display light scattering also can be formed containing particulate.
In the present invention, the formation of pressure-sensitive adhesive layer 2 arranged at least one side of polarizer 1 is made up of the formation of pressure-sensitive adhesive layer of the store elastic modulus showing 0.15 ~ 1MPa in the temperature range of 23 ~ 80 DEG C.Store elastic modulus can use commercially available determination of viscoelasticity device such as shown in embodiment described later, and the determination of viscoelasticity device " DYNAMICANALYZERRDA11 " that REOMETRIC society manufactures measures.Store elastic modulus about the 0.1MPa at the most of the pressure-sensitive adhesive used in the blooming of common image display device or its use, in contrast to this, the store elastic modulus 0.15 ~ 1MPa of the formation of pressure-sensitive adhesive layer 2 specified in the present invention is high values.By using the high like this store elastic modulus of display, namely hard pressure-sensitive adhesive, the change in size that the contraction phase of the polarizer produced under can reducing hot environment is adjoint.That is, good permanance can be obtained.
The means making the store elastic modulus of formation of pressure-sensitive adhesive layer 2 become high level like this are not particularly limited, and such as, in common adhesive composition described above, coordinate oligomer, and the oligomer specifically coordinating urethane acrylate class is effective.Preferably after coordinating such urethane acrylate quasi-oligomer, irradiation energy line makes it solidify, and can show high store elastic modulus like this.Coordinating the adhesive composition of urethane acrylate quasi-oligomer or to be coated on support membrane and the membranaceous pressure-sensitive adhesive carrying out ultraviolet curing and formed, is known.
The method that polarizer 1 is formed formation of pressure-sensitive adhesive layer 2 is not particularly limited, such as, can arrange by the following method, after the one or two sides of polarizer 1 uses adhesive composition as above to form formation of pressure-sensitive adhesive layer 2, lamination comprises the method for the partition of the resin molding having carried out the demoulding process such as silicone; Or form formation of pressure-sensitive adhesive layer 2 on partition described above after, be transferred to the method etc. on polarizer 1.In addition, when polarizer 1 forms formation of pressure-sensitive adhesive layer, the process for improving adaptation can be carried out as required on the face (one or two) of the stickup side of polarizer 1 or formation of pressure-sensitive adhesive layer 2, such as corona treatment etc.
The thickness of formation of pressure-sensitive adhesive layer 2 is preferably 1 ~ 40 μm.In order to obtain target thin polarizer of the present invention, in the scope not damaging the characteristic such as processability and permanance, be preferably formed thin formation of pressure-sensitive adhesive layer 2, such as, form 3 ~ 25 μm, while maintenance good workability, be applicable in the size that can suppress polarizer.
The formation of pressure-sensitive adhesive layer 2 of above-mentioned explanation is preferably set at the one side of polarizer 1, and the protective seam 4 comprising transparent resin film is set in another face of polarizer 1.As protective seam 4, suitable hyaline membrane can be used.Wherein, the film comprising the excellent resin such as the transparency and uniform optical characteristics, physical strength, thermal stability is preferably used.Such as, the acrylic resin film such as the cellulosic resin film such as triacetyl cellulose and diacetyl cellulose, polyethylene terephthalate and the polyester resin such as polyethylene glycol isophthalate, polybutylene terephthalate film, poly-(methyl) methyl acrylate and poly-(methyl) ethyl acrylate, polycarbonate resin film, polyether sulfone resin molding, polysulfones resin molding, polyimide based resin film, polyolefin resin film can be enumerated, the cyclic olefin resin film etc. that is monomer with cyclic olefins such as norborene, but be not limited to these.Protective seam 4 is bonding with polarizer 1, can use tackifier or pressure-sensitive adhesive.
The surface of protective seam 4 can arrange the surface-treated layers such as hard conating, anti-reflection layer, anti-dazzle photosphere as required.Hard conating is formed to prevent the damage on Polarizer surface; mainly suitably can select from the ultraviolet curing resin such as resin such as acrylic compounds or silicone and the adaptation of protective clear layer 4 and the excellent resin of hardness, and be formed on the surface of protective clear layer 4.
In addition, anti-reflection layer is formed to prevent the reflection of Polarizer exterior light on the surface, can be formed by known method.Anti-dazzle photosphere is formed to prevent the visibility obstacle that external light reflection to the surface of Polarizer produces; the general surface roughening mode by such as sandblasting mode or embossing processing mode etc. or be coated with the coating fluid the formation such as the mode of solidification that mixed transparent particulate obtains in ultraviolet curing resin, makes the surface of protective clear layer 4 forms concavo-convex formation.
The Polarizer of the present invention 10 more than formed, can by obtaining composite polarizing plate at formation of pressure-sensitive adhesive layer 2 side configuration polymer film.Fig. 2 is the constructed profile representing the example that the layer of composite polarizing plate of the present invention is formed.Composite polarizing plate 15 shown in Fig. 2 is formed at formation of pressure-sensitive adhesive layer 2 side configuration polymer film 6 under the state peeling off partition 9 from the Polarizer 10 shown in Fig. 1.In this embodiment, polymer film 6 is made up of polarizer.The surface of polymer film 6 is provided with formation of pressure-sensitive adhesive layer 7, and its surface is by partition 9a temporary protection in addition.
Polymer film 6 can be formed by previously as the various resins illustrated in the resin forming protective seam 2.Particularly advantageously polymer film 6 is by having phase differential in face and the film had as the function of polarizer is formed.There is the polymer film 6 of phase differential in face; can suitably select as the characteristic required by the polarizer i.e. uniform polymer film of its Birefringent optical, the compensation (also comprising the meaning of viewing angle compensation) etc. of the phase differential produced using the defencive function of polarizer 1 and liquid crystal panel uses as object.As its example, can unrestrictedly use the polymer film in the past used in image display device, the film that birefringent film, discotic mesogenic or the nematic crystal orientation that can enumerate the stretched film comprising various transparent polymer etc. are fixed, the film etc. forming above-mentioned liquid crystal layer on film base material.On film base material when immobile liquid crystal layer, preferably use the cellulosic resin films such as triacetyl cellulose as the film base material supporting aligned liquid-crystal layer.
As the polymkeric substance of form dielectric grid film, can enumerate such as: polycarbonate-based, polyolefins, polyarylate class, the cyclic polyolefin hydro carbons etc. that is polyamide-based, that be monomer with ring-type alkene classes such as norborene such as polyvinyl alcohol, polystyrene type, polymethylmethacrylate class, polypropylene.Stretched film can be the film by the process of the appropriate ways such as single shaft or twin shaft.In addition, also can be used under the bonding with heat-shrinkable film by applying convergent force and/or tensile force and the birefringence film of the refractive index of controlling diaphragm thickness direction.
Polymer film 6 can comprise the kind of the film of previous materials by unrestricted choice according to actual needs, in the present invention for the purpose of the slimming of Polarizer, the polymer film 6 particularly preferably with polarizer function is laminated to formation of pressure-sensitive adhesive layer 2 side of Polarizer 10.In addition, as required, can form with the resin molding with phase difference function the protective seam 4 being arranged on the opposition side of the formation of pressure-sensitive adhesive layer 2 of polarizer 1.
When being particularly formed in the composite polarizing plate of elliptical polarized light or the rotatory polarization pattern used in the image display device of mobile purposes, effectively can use λ/2 plate or λ/4 plate.The composite polarizing plate of elliptical polarized light or rotatory polarization pattern has and is become elliptically polarized light or circularly polarized light when the polarized light of incidence is rectilinearly polarized light, and when the polarized light of incidence be elliptically polarized light or circularly polarized light become the function of rectilinearly polarized light.Particularly as elliptically polarized light or circularly polarized light can being become rectilinearly polarized light and rectilinearly polarized light can being become the polarizer of elliptically polarized light or circularly polarized light, can use and be called λ/4 plate and the polarizer showing the phase differential of 1/4 wavelength relative to the wavelength of incident light.In addition, λ/2 plate has the function in the direction changing linearly polarized light.In addition, λ/2 plate and λ/4 flaggy pressure are made optic axis with the angular cross of regulation, broadband λ/4 plate showing the phase differential of 1/4 wavelength in extensive wavelength coverage can be obtained.
The composite polarizing plate of above-mentioned elliptical polarized light pattern is effective for the coloring phenomenon preventing from producing due to the birefringence of liquid crystal in liquid crystal indicator.The composite polarizing plate of rotatory polarization pattern improves object etc. with brightness and effectively uses in reflection-type or translucent reflective type image display device.The composite polarizing plate of rotatory polarization pattern, also has anti-reflective function.
In composite polarizing plate 15 of the present invention, the outside of polymer film 6 that the formation of pressure-sensitive adhesive layer 2 that store elastic modulus is high is pasted, in order to image display device lamination or with other optical layers lamination, formation of pressure-sensitive adhesive layer 7 is preferably set.In addition, in the exposed surface of this formation of pressure-sensitive adhesive layer 7, preferably there is the partition 9a comprising the resin molding having carried out the release agent process such as silicone.
The formation of pressure-sensitive adhesive layer 7 of the arranged outside of polymer film 6, can be the general formation of pressure-sensitive adhesive layer used in conventional images display device or the blooming for it, the store elastic modulus degree of the formation of pressure-sensitive adhesive layer 2 arranged at least one side of polarizer 1 in the present invention need not be had.As an example, the pressure-sensitive adhesive of polymkeric substance based on acrylic polymers or silicone polymkeric substance, polyester, polyurethane etc. can be used.Wherein, preferred choice for use resemble the such optical transparence of acrylic pressure-sensitive adhesivee stick excellent, keep suitable wetting state and cohesive force, with the cohesive of base material also excellent and have weatherability and thermotolerance etc., heat and humidification condition under do not produce the pressure-sensitive adhesive problem of peeling off such as swelling or peel off.
Formation of pressure-sensitive adhesive layer 7 containing for giving light scattering particulate, can coordinate filling agent, pigment or the colorant, antioxidant, ultraviolet light absorber etc. that comprise glass fibre or glass microsphere (beads), resin microsphere, metal powder or other inorganic powder etc. as required.Ultraviolet light absorber has salicylate compounds or benzophenone compound, benzotriazole compound, cyanoacrylate compound, nickel complex salt compounds etc.
The formation of formation of pressure-sensitive adhesive layer 7 can in the following manner such as: adhesive composition is dissolved or dispersed in the organic solvent such as toluene and ethyl acetate the solution preparing 10 ~ 40 % by weight, and this solution is directly coated the mode on the surface of polymer film 6; The partition having carried out the demoulding process such as silicone in advance forms formation of pressure-sensitive adhesive layer, and this its transfer to mode on polymer film 6.The thickness of formation of pressure-sensitive adhesive layer 7 is determined according to its bounding force etc., is generally the scope of 1 ~ 50 μm.
The polarizer 1 being provided with the high formation of pressure-sensitive adhesive layer of store elastic modulus 2 is not particularly limited with the laminating method of polymer film 6, can carry out lamination by existing known technology.As an example, can enumerate and use overlay film roller (Stickers closes ロ ー Le) etc., carry out the optic axis of polymer film 6 is intersected vertically with the polarizing axis of polarizer or parallel laminating method or carry out making the optic axis of polymer film 6 become the laminating method of predetermined angular relative to the polarizing axis of polarizer.Composite polarizing plate of the present invention, is carrying out making the polarizing axis of polarizer 1 become in the formation of the rotatory polarization of the lamination of predetermined angular or elliptical polarized light pattern can especially effectively use with the optic axis of polymer film 6.
In addition, Polarizer of the present invention or composite polarizing plate, can the optical layers of lamination more than 1 layer or 2 layers other display optical function when it uses.Be not particularly limited about this optical layers, can enumerate such as: reflection horizon, semi-penetration layer, light diffusion layer, polarizer, solar panel, brightness improve film etc.
The composite polarizing plate of reflection-type, may be used for making the reflected incident light from visual side and carrying out in the liquid crystal indicator of the type shown, can omit the light sources such as backlight, therefore easily make liquid crystal indicator slimming.In addition, the composite polarizing plate of translucent reflective type, may be used in the open as reflection-type, in the dark as the liquid crystal indicator using the infiltration type of the light source such as backlight to carry out the type shown.For the formation of the reflection horizon of the composite polarizing plate of reflection-type, such as, can set up the paper tinsel or vapor-deposited film comprising the metals such as aluminium on the protective seam 4 of polarizer 1 and be formed.In addition, for the formation of the semi-penetration layer of the composite polarizing plate of translucent reflective type, can by formation such as the method that described reflection horizon is made half-mirror (halfmirror), the methods that maybe reflecting plate containing pearl pigment display light permeability and Polarizer bonded.
On the other hand; the composite polarizing plate of diffused; it is the composite polarizing plate simultaneously with the function making incident light spread; can use on the protective seam 4 of polarizer 1, such as carry out delustring process method, coating containing various methods such as the method for the resin of particulate, the methods of the gluing film containing particulate, form the light diffusion layer of minute concave-convex structure from the teeth outwards.
In addition, the dual-purpose composite polarizing plate of reflection diffusion is the composite polarizing plate that the method in the reflection horizon by such as arranging its concaveconvex structure of reflection on the minute concave-convex structure face of diffused composite polarizing plate etc. arranges diffusive reflective layer.The reflection horizon of minute concave-convex structure makes incident light spread by diffuse reflection, has the advantage etc. that can prevent directive property and dazzle (ギ ラ Star キ), suppress light and shade inequality.In addition, containing fine-grained resin bed or film, spreading through making it when this layer at incident light and reflected light thereof, therefore also having and can suppress the unequal advantage of light and shade further.Reflecting the reflection horizon of surperficial minute concave-convex structure, can be formed by utilizing the methods such as evaporation or coating such as such as vacuum evaporation, ion plating, sputtering directly to set up metal on the surface of minute concave-convex structure.In addition, in order to form the particulate that surperficial minute concave-convex structure coordinates, such as mean grain size can be used to be 0.1 ~ 30 μm of mineral-type particulate comprising silicon dioxide, aluminium oxide, titanium dioxide, zirconia, tin oxide, indium oxide, cadmium oxide, antimony oxide etc., to comprise the organic particulate etc. of crosslinked or uncrosslinked polymkeric substance etc.
As the example of polarizer, can enumerate, with in the dephased polymer film of tool 6, identical polarizer is described.
Solar panel is set up in order to objects such as light path control, therefore can be formed as prism array sheet or lens array sheet or band point sheet material (De ッ ト pays Let シ ー ト) etc.
Brightness improves film, have by a part for the natural light of incidence with the form of linearly polarized light or circularly polarized light through, and by the film of the function of remaining light reflection recycling, to use to improve the brightness of liquid crystal indicator.Its example can be enumerated: made to produce anisotropy in reflectivity by film multi-disc laminations mutually different for the anisotropy of refractive index and the reflection-type linearly polarized light separating sheet be designed to, the reflection-type rotatory polarization separating sheet etc. the alignment films of cholesteric liquid crystal polymer or this aligned liquid-crystal layer are supported on film base material.
Above-described various optical layers, use bonding agent or tackifier to be formed integrally with Polarizer or composite polarizing plate, the bonding agent for this reason used or tackifier are not particularly limited, can the suitable bonding agent of choice for use or tackifier.From the viewpoint of the simplicity of gluing operation with prevent optical skew generation etc., preferably use pressure-sensitive adhesive.As the example of pressure-sensitive adhesive, can enumerate previously with reference to the same pressure-sensitive adhesive that Fig. 2 is described pressure-sensitive adhesive 7.In addition, when the formation of pressure-sensitive adhesive layer of formation exposes from the teeth outwards, in order to preventing pollution etc., partition can be configured.Also can use and previously described same partition as partition.
Polarizer of the present invention or composite polarizing plate, can be configured on various image-displaying member, obtain image display device.Such as, be configured to the single or double of liquid crystal cell, can liquid crystal indicator be obtained.The liquid crystal cell used is arbitrary liquid crystal cell, and such as, the various liquid crystal panel such as the passive waked-up type liquid crystal cell that the active matrix drive-type liquid crystal cell that film transistor type can be used to be representative, super-twist nematic are representative forms liquid crystal indicator.When the both sides of liquid crystal cell arrange Polarizer of the present invention or composite polarizing plate, both can be the same or different.
Fig. 3 represents that composite polarizing plate of the present invention is installed to the constructed profile of the example on liquid crystal panel.
In this embodiment, the state of partition 9a is being peeled off from the composite polarizing plate 15 shown in Fig. 2, the one side (in figure upside) of liquid crystal cell 20 is pasted by its formation of pressure-sensitive adhesive layer 7, and carry out lamination (in this condition at the another side (downside of figure) of liquid crystal cell 20 with the order of high formation of pressure-sensitive adhesive layer 2/ polarizer 1/ protective clear layer 4 of formation of pressure-sensitive adhesive layer 7/ polymer film (polarizer) 6/ store elastic modulus, be equivalent to the composite polarizing plate shown in Fig. 2), the composite polarizing plate 16 that outside lamination has other optical layers 8 is pasted onto in addition in this formation of pressure-sensitive adhesive layer 7 side.Liquid crystal indicator in this example, the upside of figure is visual side, is configured to the downside of figure when arranging backlight.Now, other optical layers 8 can be reflection horizon, semi-penetration layer, solar panel, brightness raising film etc.
In addition, composite polarizing plate of the present invention also can effectively for having rotatory polarization or the elliptical polarized light pattern of anti-reflective function in the flat-panel screens such as the image display device beyond liquid crystal indicator, such as organic EL display.The image display device that certain Polarizer of the present invention or composite polarizing plate are suitable for, is not limited to the image display device illustrated in this.
Embodiment
Below, illustrate the present invention further by embodiment and comparative example, but the present invention is not by the restriction of these examples.In addition, in following example, store elastic modulus and size changing rate are the values measured by following method.
[elastic modulus]
The store elastic modulus of pressure-sensitive adhesive (G ') is using the thick cylinder of 8mm φ × 1mm as test film, use the determinator " DYNAMICANALYZERRDAII " that REOMETRIC society manufactures, try to achieve with the torsional shear method of frequency 1Hz (twist with the fingers り せ ん break method).
[size changing rate]
The Polarizer made in each example is carried out cutting with the size of diagonal angle 2.7 inches (about 6.9cm) makes polarisation absorption axle become 120 degree relative to long limit clockwise direction, this formation of pressure-sensitive adhesive layer side is pasted on the glass plate that thickness is 0.7mm, under the condition of temperature 50 C, pressure 0.5MPa, carry out high pressure steam process in 20 minutes.Naturally, after cooling, each sample is put into the baking oven that temperature keeps 85 DEG C, carry out the maintenance heat test of 500 hours.Use the two-dimentional determinator " NEXIVVMR-12072 " that Co., Ltd. ニ コ Application manufactures, the size of Polarizer before and after determination test, by following formula driven dimension rate of change.In addition, respectively dimension measurement is carried out to the long limit of Polarizer and minor face, obtains the size changing rate on long limit and the size changing rate of minor face respectively, and using the size changing rate of its mean value as Polarizer entirety.
Size changing rate (%)=[size before (size after the size-test before test)/test] × 100
In addition, in following example, as the pressure-sensitive adhesive that the surface of polarizer is directly arranged, use following tackifier.
Pressure-sensitive adhesive A: coordinate urethane acrylate oligomer with acrylic acid multipolymer at butyl acrylate, and interpolation isocyanates crosslinking chemical obtains organic solvent solution further, being coated on demoulding treated side that the thickness having carried out demoulding process is the polyethylene terephthalate film (partition) of 38 μm by die type coating machine by this organic solvent solution makes dried thickness be 15 μm, the Web-form adhesive obtained thus.
The store elastic modulus of formation of pressure-sensitive adhesive layer 23 DEG C be 0.40MPa, be 0.18MPa at 80 DEG C.
Pressure-sensitive adhesive B: at the thickness having carried out demoulding process be the polyethylene terephthalate film (partition) of 38 μm demoulding treated side on be provided with the commercially available Web-form adhesive that thickness is the acrylic pressure-sensitive adhesivee adhesive layer of 15 μm.Do not coordinate urethane acrylate oligomer.The store elastic modulus of this formation of pressure-sensitive adhesive layer 23 DEG C be 0.05Ma, be 0.04MPa at 80 DEG C.
Pressure-sensitive adhesive C: at the thickness having carried out demoulding process be the polyethylene terephthalate film (partition) of 38 μm demoulding treated side on be provided with the commercially available Web-form adhesive that thickness is the acrylic pressure-sensitive adhesivee adhesive layer of 15 μm.Do not coordinate urethane acrylate oligomer.The store elastic modulus of this formation of pressure-sensitive adhesive layer 23 DEG C be 0.10Ma, be 0.04MPa at 80 DEG C.
Embodiment 1
On the one side of the polarizer that the film being 25 μm by the thickness of iodine gas absorption quantity on polyvinyl alcohol (PVA) is formed; by the tackifier be made up of the aqueous solution containing polyvinyl alcohol (PVA) and water-soluble epoxy resin; paste the diaphragm that thickness is the tri acetyl cellulose membrane formation of 40 μm, prepare Polarizer thus.Pressure-sensitive adhesive A is pasted in this polyvinyl alcohol film side, obtains the thin polarizer corresponding to Fig. 1.
In addition, prepare the polarizer of band pressure-sensitive adhesive, its phase differential in thickness 40 μm, face is the phase retardation film (" エ ス シ ー Na Off ィ Le system " that Sekisui Fine Chemical Co., Ltd. manufactures that the norborneol resinoid of 140nm is formed, trade name) one side on the acrylic pressure-sensitive adhesivee stick of thickness setting 25 μm, and its surface partition covers and forms.After the partition of the thin polarizer previously obtained is peeled off, the side that acrylic pressure-sensitive adhesivee stick is not set of the polarizer of above-mentioned band pressure-sensitive adhesive is pasted in its formation of pressure-sensitive adhesive layer side, make its optic axis absorb axle clockwise direction relative to the polarisation of Polarizer at 45 °, make the slim composite polarizing plate corresponding with Fig. 2.The gross thickness of the slim composite polarizing plate obtained is 148 μm except the partition of most surface, and the weight of unit area is 17.55mg/cm
2.
Comparative example 1
On the two sides of the polarizer formed with the identical polyvinyl alcohol film that embodiment 1 uses; by the tackifier be made up of the aqueous solution containing polyvinyl alcohol (PVA) and water-soluble epoxy resin; paste the diaphragm that thickness is the tri acetyl cellulose membrane formation of 40 μm respectively, prepare Polarizer thus.On its one side, paste pressure-sensitive adhesive B, then the partition of pressure-sensitive adhesive B is peeled off, paste the side that acrylic pressure-sensitive adhesivee stick is not set of the polarizer of the identical band pressure-sensitive adhesive used with embodiment 1 in this formation of pressure-sensitive adhesive layer side, make the composite polarizing plate corresponding with Fig. 4.The formation of this composite polarizing plate is the typical example of generally commercially available existing composite polarizing plate.The gross thickness of the slim composite polarizing plate obtained is 188 μm except the partition of most surface, and the weight of unit area is 21.18mg/cm
2.
Comparative example 2
Except changing to except pressure-sensitive adhesive B by the pressure-sensitive adhesive configured between polarizer and polarizer in embodiment 1, make slim composite polarizing plate similarly to Example 1.
Comparative example 3
Except changing to except pressure-sensitive adhesive C by the pressure-sensitive adhesive configured between polarizer and polarizer in embodiment 1, make slim composite polarizing plate similarly to Example 1.
Then, for the composite polarizing plate that embodiment 1 and comparative example 1 ~ 3 make, according to aforesaid determination of test method size changing rate.The store elastic modulus of the formation of pressure-sensitive adhesive layer that measurement result and the gross thickness of each composite polarizing plate, the weight of unit area and polarizer are arranged is shown in Table 1 in the lump.
Table 1
As can be seen from Table 1; the of the present invention slim composite polarizing plate that embodiment 1 obtains; compared with the example comparative example 1 of existing composite polarizing plate; by the dephased polymer film of lamination tool (polarizer) as protective seam; the formation sheet number of composite polarizing plate can be reduced, thus realize slim light weight.In addition, size changing rate when placing under the hot conditions of 85 DEG C, the slim composite polarizing plate adopting the comparative example 2 and 3 of identical formation except formation of pressure-sensitive adhesive layer difference with embodiment 1 is more than 2.0%, and existing composite polarizing plate (comparative example 1) is 1.9%, on the other hand, the composite polarizing plate of embodiment 1 is 1.5%, can inhibit the change in size of polarizer with confirming the validity.Therefore, Polarizer of the present invention and composite polarizing plate, can maintain good permanance.
Claims (6)
1. a composite polarizing plate, it is characterized in that, at the formation of pressure-sensitive adhesive layer side of Polarizer configuration polymer film, and at the arranged outside formation of pressure-sensitive adhesive layer of polymer film, the store elastic modulus of the formation of pressure-sensitive adhesive layer that the one side of polarizer is arranged is higher than the store elastic modulus of the formation of pressure-sensitive adhesive layer of the arranged outside at polymer film
Described Polarizer is following Polarizer:
The one side of polarizer directly arranges formation of pressure-sensitive adhesive layer,
Another face of polarizer is arranged by the tackifier of non-pressure-sensitive adhesive the protective seam comprising transparent resin film,
Described formation of pressure-sensitive adhesive layer shows the store elastic modulus of 0.15 ~ 1MPa under the temperature range of 23 ~ 80 DEG C.
2. composite polarizing plate as claimed in claim 1, wherein, polarizer is dichromatism pigment gas absorption quantity and polarizer of obtaining on polyvinyl alcohol resin film.
3. composite polarizing plate as claimed in claim 1, wherein, the thickness of formation of pressure-sensitive adhesive layer is 1 ~ 40 μm.
4. composite polarizing plate as claimed in claim 1, wherein, polymer film has phase differential in face.
5. a composite polarizing plate, is characterized in that, the optical layers of other display optical function of lamination on composite polarizing plate according to claim 1.
6. an image display device, is characterized in that, has image-displaying member and composite polarizing plate according to claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-031659 | 2007-02-13 | ||
| JP2007031659A JP5082480B2 (en) | 2007-02-13 | 2007-02-13 | Thin polarizing plate and image display device using the same |
| CNA2008100097321A CN101246233A (en) | 2007-02-13 | 2008-02-13 | Thin polarizer and image display apparatus using the same |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100097321A Division CN101246233A (en) | 2007-02-13 | 2008-02-13 | Thin polarizer and image display apparatus using the same |
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| CN105487158A true CN105487158A (en) | 2016-04-13 |
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| CNA2008100097321A Pending CN101246233A (en) | 2007-02-13 | 2008-02-13 | Thin polarizer and image display apparatus using the same |
| CN201510917180.4A Pending CN105487158A (en) | 2007-02-13 | 2008-02-13 | Thin type polarizer and display used thereof |
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| CNA2008100097321A Pending CN101246233A (en) | 2007-02-13 | 2008-02-13 | Thin polarizer and image display apparatus using the same |
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| JP (1) | JP5082480B2 (en) |
| KR (1) | KR101505194B1 (en) |
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| Publication number | Publication date |
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| JP5082480B2 (en) | 2012-11-28 |
| CN101246233A (en) | 2008-08-20 |
| KR101505194B1 (en) | 2015-03-24 |
| KR20080075779A (en) | 2008-08-19 |
| JP2008197309A (en) | 2008-08-28 |
| TWI509297B (en) | 2015-11-21 |
| TW200900757A (en) | 2009-01-01 |
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Application publication date: 20160413 |