KR20140074493A - Thin type polarising plate - Google Patents
Thin type polarising plate Download PDFInfo
- Publication number
- KR20140074493A KR20140074493A KR1020120142497A KR20120142497A KR20140074493A KR 20140074493 A KR20140074493 A KR 20140074493A KR 1020120142497 A KR1020120142497 A KR 1020120142497A KR 20120142497 A KR20120142497 A KR 20120142497A KR 20140074493 A KR20140074493 A KR 20140074493A
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- ultraviolet
- acrylate
- meth
- ultraviolet absorbing
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Classifications
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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
-
- 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
- G02B5/3075—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state for use in the UV
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Polarising Elements (AREA)
Abstract
The present invention relates to a thin polarizing plate, and more particularly, to a polarizing plate comprising a polarizer, an acrylate-based film laminated on one surface thereof, and a pressure-sensitive adhesive layer containing an ultraviolet absorbing copolymerizable monomer having an ultraviolet absorbing group and a copolymerizing functional group on the other surface thereof, And is excellent in durability under conditions of ultraviolet light shielding property, high temperature or high temperature and high humidity.
Description
The present invention relates to a thin polarizer excellent in ultraviolet blocking property and durability.
The liquid crystal display comprises a liquid crystal cell in which a transparent electrode, a liquid crystal layer, and a color filter are sandwiched between glass plates, and a polarizing plate laminated on both surfaces of the liquid crystal cell.
The polarizing plate has a polarizer and a polarizer protective film laminated on both sides thereof. A cellulose-based protective film or a cycloolefin-based protective film is used as the polarizer protective film to be bonded to the pressure-sensitive adhesive, and a cellulose-based protective film is generally used on the opposite side.
At this time, the cellulose-based protective film which is not bonded to the pressure-sensitive adhesive essentially contains a UV-blocking agent for suppressing the liquid crystal deformation due to ultraviolet rays introduced from external light or backlight.
On the other hand, liquid crystal displays are required to be durable and resistant to heat, moisture and heat as they are inexpensive and thin, as well as being transported through hot and humid areas such as tropical regions, near sea areas, near equator It is expanding.
A polarizer protective film bonded to the pressure sensitive adhesive is removed and a low moisture permeable protective film such as a cycloolefin type or acrylate type is used as a material of the polarizer protective film.
However, low moisture-permeable protective films such as cycloolefin-based or acrylate-based films are less compatible with ultraviolet screening agents than cellulose-based protective films, and bleed-out phenomenon occurs.
In addition, the cycloolefin-based or acrylate-based protective film produced by the melt extrusion method has a problem in that the ultraviolet screening agent is volatilized or decomposed in the production step.
Accordingly, a method of containing various ultraviolet screening agents in a pressure-sensitive adhesive composition (Korean Patent Laid-Open Publication No. 2010-9550, 2011-135767) is proposed. However, although the ultraviolet shielding function is imparted to the pressure-sensitive adhesive composition, there is a problem that the ultraviolet screening agent bleeds out to the glass substrate of the liquid crystal cell to deteriorate durability such as heat resistance.
It is an object of the present invention to provide a polarizing plate which can be thinned by removing a polarizer protective film bonded to a pressure-sensitive adhesive, and is excellent in ultraviolet barrier property and durability by applying an acrylate film as a polarizer protective film.
In order to achieve the above object, the present invention provides a thin polarizer in which an acrylate-based film is laminated on one surface of a polarizer, and a pressure-sensitive adhesive layer containing an ultraviolet absorbing copolymerizable monomer having an ultraviolet absorbing group and a copolymerizing functional group on the other surface thereof is laminated do.
The ultraviolet absorbing copolymerizable monomer may be at least one selected from the group consisting of oxyphenone, benzotriazole, salicylic ester, benzophenone, cyanoacrylate, triazole, triazine, nickel complex salt and inorganic powder Absorbing group, and at least one copolymerizable functional group selected from the group consisting of a (meth) acryl group, a vinyl group, an allyl group and a styryl group.
Preferably, the ultraviolet absorbing group of the ultraviolet absorbing copolymerizable monomer may be at least one selected from the group consisting of oxyphenone, benzotriazole and triazine.
More preferably, the ultraviolet absorbing copolymerizable monomer is
The pressure-sensitive adhesive layer may contain an acrylic copolymer in which (1) a (meth) acrylate monomer having an alkyl group of 1-12 carbon atoms and 2) an ultraviolet absorbing copolymerizable monomer having an ultraviolet absorbing group and a copolymerizing functional group are copolymerized.
The ultraviolet absorbing copolymerizable monomer having 2) the ultraviolet absorbing group and the copolymerizing functional group may be 1) copolymerized in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the (meth) acrylate monomer having an alkyl group having 1-12 carbon atoms .
The thin polarizer according to the present invention is advantageous in that the polarizer protective film and the pressure-sensitive adhesive layer are respectively formed on both sides of the polarizer, so that the thickness of the polarizer can be remarkably reduced compared with the conventional one.
Further, the thin polarizer according to the present invention has an advantage of being excellent in ultraviolet barrier property and durability under high temperature or high temperature and high humidity conditions even when an acrylate-based protective film having no ultraviolet blocking effect is applied.
In addition, the polarizing plate according to the present invention can be usefully used when a liquid crystal display device including a polarizing plate is transported through a high temperature and high humidity region such as a tropical region, a region adjacent to the sea, and an equator.
In addition, the polarizing plate according to the present invention can be effectively used even when a backlight having a large amount of heat is used for better sharpness, or when the distance between the polarizing plate and the backlight is reduced while the liquid crystal display is thinned.
The present invention relates to a thin polarizer excellent in ultraviolet blocking property and durability.
Hereinafter, the present invention will be described in detail.
In the thin polarizing plate of the present invention, an acrylate-based film is laminated on one surface of a polarizer, and a pressure-sensitive adhesive layer containing an ultraviolet absorbing copolymerizable monomer having an ultraviolet absorbing group and a copolymerizing functional group on the other surface thereof is laminated.
The ultraviolet absorbing copolymerizable monomer may be at least one selected from the group consisting of oxyphenone, benzotriazole, salicylic ester, benzophenone, cyanoacrylate, triazole, triazine, nickel complex salt and inorganic powder And may have at least one functional group selected from the group consisting of a (meth) acrylic group, a vinyl group, an allyl group and a styryl group. Preferably, the ultraviolet absorbing group of the ultraviolet absorbing copolymerizable monomer is at least one selected from the group consisting of an oxyphenone series, a benzotriazole series, and a triazine series. Considering the compatibility with the monomer to be copolymerized, the ease of copolymerization, and the easiness of the material production process, the ultraviolet absorbing copolymerizable monomer
The pressure sensitive adhesive layer directly formed on one side of the polarizer can be bonded to the glass substrate of the liquid crystal cell, thereby making it possible to form a thinner structure than the conventional polarizing plate.
In addition, the ultraviolet absorbing copolymerizable monomer contained in the pressure sensitive adhesive layer is suitable for use with an acrylate film having an ultraviolet absorbing group which is not easy to add an ultraviolet screening agent. The ultraviolet absorbing copolymerizable monomer is copolymerized, The phenomenon that the ultraviolet screening agent bleeds out is prevented, and the durability can be excellent.
These acrylic monomers may be synthesized or commercially available products. As a synthesizing method, European Patent No. 2065362, Journal of Photochemistry 2011. 26, Macromolecules 2004. 882, US Patent No. 2011-196169, US Patent No. 5714134, US Patent No. 5672704, and the like can be used.
(1) a (meth) acrylate monomer having an alkyl group of 1-12 carbon atoms and (2) an acrylic-based copolymer containing an acrylic copolymer in which the ultraviolet absorbing copolymerizable monomer having the ultraviolet absorbing group and the copolymerizing functional group are copolymerized Lt; / RTI >
Here, (meth) acrylate means acrylate and methacrylate.
Examples of the (meth) acrylate monomer having an alkyl group having 1-12 carbon atoms include n-butyl (meth) acrylate, 2-butyl (meth) acrylate, (Meth) acrylate, ethyl (meth) acrylate, methyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (Meth) acrylate, n-butyl acrylate, nonyl (meth) acrylate, decyl (meth) acrylate and lauryl Or a mixture thereof. These may be used alone or in combination of two or more.
The ultraviolet absorbing copolymerizable monomer having 2) the ultraviolet absorbing group and the copolymerizing functional group is preferably contained in 1) in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the (meth) acrylate monomer having an alkyl group having 1-12 carbon atoms, More preferably 0.5 to 3 parts by weight. If the content is less than 0.1 part by weight, the ultraviolet ray shielding effect may be insufficient. If the content is more than 5 parts by weight, the ultraviolet ray shielding effect may be satisfied, but the transmittance and the adhesive property of the visible ray region may be affected. Can cause.
The acrylic copolymer of the present invention may further contain a polymerizable monomer having a crosslinkable functional group in addition to the ultraviolet absorbing copolymerizable monomer (2).
The polymerizable monomer having a crosslinkable functional group includes, for example, a monomer having a hydroxy group, a monomer having a carboxyl group, a monomer having an amide group, a monomer having a tertiary amine group, etc. These monomers may be used alone or in combination.
Examples of the monomer having a hydroxy group include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 4-hydroxybutyl Hydroxypropyleneglycol (meth) acrylate, hydroxyalkylene glycol having 2 to 4 carbon atoms in the alkylene group (e.g., methoxyethyl (meth) acrylate, Hydroxybutyl vinyl ether, 8-hydroxyoctyl vinyl ether, 9-hydroxynonyl (meth) acrylate, 4-hydroxybutyl vinyl ether, Vinyl ether, and 10-hydroxydecyl vinyl ether, among which 4-hydroxybutyl vinyl ether is preferable.
Examples of the monomer having a carboxyl group include monovalent acids such as (meth) acrylic acid and crotonic acid; Dicarboxylic acids such as maleic acid, itaconic acid, and fumaric acid, and monoalkyl esters thereof; 3- (meth) acryloylpropionic acid; A succinic anhydride ring-opening addition adduct of 2-hydroxyalkyl (meth) acrylate in which the alkyl group has 2 to 4 carbon atoms, anhydrous succinic ring opening adduct of a hydroxyalkylene glycol (meth) acrylate having 2 to 4 carbon atoms in the alkylene group , Compounds obtained by ring-opening addition of succinic anhydride to caprolactone adducts of 2-hydroxyalkyl (meth) acrylates whose alkyl groups have 2-3 carbon atoms, and among these, (meth) acrylic acid is preferable.
Examples of the monomer having an amide group include (meth) acrylamide, N-isopropyl acrylamide, N-tertiary butyl acrylamide, 3-hydroxypropyl (meth) acrylamide, 4-hydroxybutyl (Meth) acrylamide, 8-hydroxyoctyl (meth) acrylamide, and 2-hydroxyethylhexyl (meth) acrylamide. Of these, (meth) acrylamide is preferable.
Examples of the monomer having a tertiary amine group include N, N- (dimethylamino) ethyl (meth) acrylate, N, N- (diethylamino) ethyl (meth) Methacrylate, and the like.
The polymerizable monomer having such a crosslinkable functional group is preferably contained in an amount of 0.05 to 10 parts by weight, more preferably 0.1 to 8 parts by weight, per 100 parts by weight of the (meth) acrylate monomer having an alkyl group having 1-12 carbon atoms good. When the content is less than 0.05 part by weight, the cohesive force of the pressure-sensitive adhesive becomes small and durability may be deteriorated. When the content is more than 10 parts by weight, a high gel fraction may lower the adhesive strength and cause durability problems.
The acrylic copolymer of the present invention may further contain other polymerizable monomers other than the above monomers in a range not lowering the adhesive force, for example, 10 parts by weight or less based on the total amount.
The method for producing the copolymer is not particularly limited and can be produced by methods such as bulk polymerization, solution polymerization, emulsion polymerization or suspension polymerization, which are commonly used in the art, and solution polymerization is preferable. In addition, a solvent, a polymerization initiator, a chain transfer agent for molecular weight control and the like which are usually used in polymerization can be used.
The acrylic copolymer preferably has a weight average molecular weight (polystyrene conversion, Mw) of 50,000 to 2,000,000, more preferably 400,000 to 2,000,000 as measured by Gel Permeation Chromatography (GPC). If the weight-average molecular weight is less than 50,000, cohesion between co-polymers may be insufficient to cause durability problems. If the weight average molecular weight is more than 2,000,000, a large amount of a diluting solvent may be required to ensure fairness in coating.
Further, the pressure-sensitive adhesive layer of the present invention may further contain a crosslinking agent.
The crosslinking agent can improve the adhesion and durability, and can maintain the reliability at a high temperature and the shape of the pressure-sensitive adhesive.
The cross-linking agent may be an isocyanate-based, epoxy-based, melamine-based, peroxide-based, metal chelating-based, oxazoline-based, or the like. Preferred is a double isocyanate-based or epoxy-based.
Examples of the isocyanate-based isocyanate include isocyanate-based compounds such as tolylene diisocyanate, xylene diisocyanate, 2,4-diphenylmethane diisocyanate, 4,4-diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, tetramethyl xylene diisocyanate, Diisocyanate compounds such as isocyanate; An adduct obtained by reacting 3 moles of a diisocyanate compound with 1 mole of a polyhydric alcohol compound such as trimethylolpropane, an isocyanurate compound in which 3 moles of a diisocyanate compound is self-condensed, a diisocyanate obtained from 2 moles of 3 moles of a diisocyanate compound And multifunctional isocyanate compounds containing three functional groups such as burette, triphenylmethane triisocyanate and methylene bistriisocyanate in which the remaining one mole of diisocyanate is condensed in urea.
The epoxy system may be an ethylene glycol diglycidyl ether, a diethylene glycol diglycidyl ether, a polyethylene glycol diglycidyl ether, a propylene glycol diglycidyl ether, a tripropylene glycol diglycidyl ether, a polypropylene glycol di Hexanediol diglycidyl ether, polytetramethylene glycol diglycidyl ether, glycerol diglycidyl ether, glycerol triglycidyl ether, diethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, Glycerol polyglycidyl ether, polyglycerol polyglycidyl ether, resorcinol diglycidyl ether, 2,2-dibromoneopentyl glycol diglycidyl ether, trimethylol propane triglycidyl ether, pentaerythritol poly Glycidyl ether, sorbitol polyglycidyl ether, adipic acid diglycidyl ester, phthalic acid diglycidyl ester, tris (glycidyl) isocyanurate N, N, N ', N'-tetraglycidyl-m-hexyldicyclohexyl) isocyanurate, 1,3-bis (N, N-glycidylaminomethyl) cyclohexane, Xylylenediamine, and the like.
Examples of the melamine type include hexamethylol melamine, hexamethoxymethyl melamine, and hexabutoxymethyl melamine.
Such a crosslinking agent may be contained in an amount of 0.1 to 15 parts by weight, preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the acrylic copolymer. If the content is less than 0.1 part by weight, the cohesive force may become small due to insufficient crosslinking, which may impair the properties of durability and cutability. If the content exceeds 15 parts by weight, a problem may occur in relaxing the residual stress due to the excessive crosslinking reaction.
In addition to the above components, the pressure-sensitive adhesive composition may further contain various additives such as a silane coupling agent, a tackifier resin, an antioxidant, a leveling agent, a surface lubricant, a dye, an antioxidant, and the like in order to control the adhesion, cohesion, viscosity, Pigments, antifoaming agents, fillers, antistatic agents, and the like.
The double silane coupling agent is preferably contained in order to improve adhesion between the pressure-sensitive adhesive and the base material. The double silane coupling agent preferably contains an alkoxysilane containing a functional group such as an amino group, an epoxy group, an acetoacetyl group, a polyalkylene glycol group, Can be used.
The amount of such an additive may be suitably controlled within a range that does not impair the effect of the present invention. For example, the silane coupling agent may be contained in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the acrylic copolymer in consideration of adhesion strength and durability have.
The present invention uses an acrylate-based film as a polarizer protective film laminated on one surface of a polarizer. The acrylate-based film has higher price competitiveness than the cycloolefin-based film, which is widely known as a low moisture permeable film, and thus has higher utilization.
The acrylate-based film is a film containing a (meth) acrylate resin and contains 50 parts by weight or more of the resin relative to 100 parts by weight of the total resin composition. A polymethyl methacrylate (PMMA) film is preferable in consideration of ease of handling and price competitiveness.
The acrylate-based film is one example of components commonly used in the art, including 1) 45 to 99% by weight of a (meth) acrylate monomer and 2) 1 to 50% by weight of a polymerizable monomer. Suspension, emulsion, bulk, or emulsion polymerization methods.
In addition, the acrylate-based film of the present invention may contain a multi-layered acrylic particulate composite.
The acrylate-based film may be subjected to a surface treatment to facilitate bonding with a polarizer. For example, a dry treatment such as a primer treatment, a plasma treatment or a corona treatment, a chemical treatment such as an alkali treatment (saponification treatment) And a coating treatment for forming an easy adhesive layer.
The bonding method and the adhesive are not particularly limited as they are conventional in the art. After bonding the polarizer and the protective film, a drying treatment may be performed
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Such variations and modifications are intended to be within the scope of the appended claims.
Manufacturing example 1 and comparison Manufacturing example 1: Production of acrylic copolymer
A monomer mixture having the composition shown in the following Table 1 was put in a 1 L reactor equipped with a cooling device for regulating the temperature of the nitrogen gas and refluxing, and 100 parts by weight of ethyl acetate (EAc) was added as a solvent. Nitrogen gas was then purged for one hour to maintain oxygen at 72 < 0 > C to remove oxygen. After the mixture was homogeneously mixed, 0.07 part by weight of azobisisobutyronitrile (AIBN) was added as a reaction initiator and reacted for 8 hours to prepare an acrylic copolymer.
(Parts by weight)
MA: methyl acrylate
AA: Acrylic acid
2-HEA: 2-hydroxyethyl acrylate
A-1: 
A-2: 
A-3: 
Manufacturing example 2 and compare Manufacturing example 2-5: Preparation of pressure-sensitive adhesive composition
As shown in Table 2 below, the acrylic copolymer, crosslinking agent and silane coupling agent of Example 1 and Comparative Example 1 were mixed and diluted in an organic solvent to prepare a pressure-sensitive adhesive composition.
(Parts by weight)
Coupling agent
Blocker
B-2: Cor-HXR, Coronate-HXR (HDI isocyanurate, manufactured by Nippon Polyurethane Kogyo Co., Ltd.)
B-3: melamine-based, hexamethylol melamine ( Waterstone Technology , LLC )
Silane coupling agent: 3-glycidoxypropyltrimethoxysilane (KBM-403, Shin-Etsu)
C-1: 
C-2: 
C-3: 
Example 1-8 and Comparative Example 1-4
The pressure-sensitive adhesive composition prepared above was applied on a release film coated with silicone release agent to a thickness of 25 탆 and dried at 100 캜 for 1 minute to form an adhesive layer. Thereafter, a release film was laminated on the pressure-sensitive adhesive layer to produce a pressure-sensitive adhesive sheet.
An adhesive composition containing a polyallylamine resin (product of Nitobosa, PAA-01) was coated on one surface of a polarizer having iodine adsorption oriented to a dry film thickness of 0.1 mu m, and then a corona-treated polymethyl Methacrylate film was bonded. On the other side, the release film was peeled off from the pressure sensitive adhesive sheet prepared above, and the pressure sensitive adhesive layer was laminated by sticking processing to produce a polarizer with a pressure sensitive adhesive. The prepared polarizing plate was stored for a curing period under the conditions of 23 캜 and 60% RH.
Experimental Example
The physical properties of the polarizing plates prepared in the above Examples and Comparative Examples were measured by the following methods, and the results are shown in Table 3 below.
1. Durability (heat resistance, Wet heat )
The prepared polarizer with a pressure-sensitive adhesive was cut into a size of 90 mm × 170 mm, and the release film was peeled off. Then, the optical absorption axis was perpendicularly attached to both sides of the glass substrate (110 mm × 190 mm × 0.7 mm). At this time, the applied pressure was 5 kg / cm < 2 >, and the clean room operation was performed so that bubbles or foreign matter would not occur. The heat resistance characteristics were evaluated by observing the occurrence of bubbles or peeling after being left at a temperature of 80 ° C. for 1000 hours. The moisture resistance characteristics were evaluated by observing the occurrence of bubbles or peeling after being left at a temperature of 60 ° C. and 90% RH for 1000 hours Respectively. At this time, the sample was allowed to stand at room temperature for 24 hours immediately before evaluating the state of the specimen.
<Evaluation Criteria>
○: Bubbles or peeling <5
X: 10 pieces < bubble &
2. Ultraviolet ray Barrier property
The produced polarizer with a pressure-sensitive adhesive was irradiated with light having a wavelength of 365 nm, and the transmittance was measured.
<Evaluation Criteria>
?: Transmittance of a 365 nm wavelength to a polarizing plate sample is 0
X: Transmittance of the 365 nm wavelength to the polarizing plate sample is not 0
As shown in Table 2, the polarizing plate in which the pressure-sensitive adhesive layer containing the polarizer-protective film and the ultraviolet-absorbing copolymerizable monomer were formed on both sides of the polarizer according to the present invention had a higher UV- It was confirmed that the adhesion durability under the conditions was excellent.
In addition, since the polarizer protective film is not used in comparison with the conventional one, the thickness of the polarizer protective film can be reduced and the thickness can be reduced.
Claims (6)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407769A (en) * | 2015-03-31 | 2017-11-28 | 三星Sdi株式会社 | Polarizer and the optical display device for including it |
| KR20190126088A (en) * | 2017-03-29 | 2019-11-08 | 닛토덴코 가부시키가이샤 | Single protection polarizing film provided with an adhesive layer, an image display apparatus, and its continuous manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007138117A (en) * | 2005-11-22 | 2007-06-07 | Nippon Shokubai Co Ltd | Ultraviolet absorbing adhesive composition |
| JP2009079156A (en) * | 2007-09-26 | 2009-04-16 | Nippon Shokubai Co Ltd | Uv absorbing polymer composition |
| JP2010044211A (en) * | 2008-08-12 | 2010-02-25 | Sumitomo Chemical Co Ltd | Polarizing plate and image display device using the same |
-
2012
- 2012-12-10 KR KR1020120142497A patent/KR102009381B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007138117A (en) * | 2005-11-22 | 2007-06-07 | Nippon Shokubai Co Ltd | Ultraviolet absorbing adhesive composition |
| JP2009079156A (en) * | 2007-09-26 | 2009-04-16 | Nippon Shokubai Co Ltd | Uv absorbing polymer composition |
| JP2010044211A (en) * | 2008-08-12 | 2010-02-25 | Sumitomo Chemical Co Ltd | Polarizing plate and image display device using the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407769A (en) * | 2015-03-31 | 2017-11-28 | 三星Sdi株式会社 | Polarizer and the optical display device for including it |
| KR20190126088A (en) * | 2017-03-29 | 2019-11-08 | 닛토덴코 가부시키가이샤 | Single protection polarizing film provided with an adhesive layer, an image display apparatus, and its continuous manufacturing method |
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| KR102009381B1 (en) | 2019-08-09 |
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| E601 | Decision to refuse application | ||
| AMND | Amendment | ||
| X701 | Decision to grant (after re-examination) | ||
| GRNT | Written decision to grant |