WO2010090449A2 - 내구성 및 내열성이 우수한 편광소자, 편광판 및 화상표시장치 - Google Patents
내구성 및 내열성이 우수한 편광소자, 편광판 및 화상표시장치 Download PDFInfo
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- WO2010090449A2 WO2010090449A2 PCT/KR2010/000672 KR2010000672W WO2010090449A2 WO 2010090449 A2 WO2010090449 A2 WO 2010090449A2 KR 2010000672 W KR2010000672 W KR 2010000672W WO 2010090449 A2 WO2010090449 A2 WO 2010090449A2
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- Prior art keywords
- polarizer
- zinc
- film
- weight
- iodine
- Prior art date
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- 230000010287 polarization Effects 0.000 title abstract description 25
- 239000011701 zinc Substances 0.000 claims abstract description 56
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052796 boron Inorganic materials 0.000 claims abstract description 49
- 239000011630 iodine Substances 0.000 claims abstract description 49
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 49
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 47
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 30
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 72
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 14
- 238000004458 analytical method Methods 0.000 claims description 10
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 6
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 claims description 6
- 239000011592 zinc chloride Substances 0.000 claims description 5
- 235000005074 zinc chloride Nutrition 0.000 claims description 5
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 4
- 238000001941 electron spectroscopy Methods 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004246 zinc acetate Substances 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000003086 colorant Substances 0.000 abstract 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 56
- 229920002451 polyvinyl alcohol Polymers 0.000 description 56
- 238000000034 method Methods 0.000 description 54
- 238000004132 cross linking Methods 0.000 description 52
- 239000007864 aqueous solution Substances 0.000 description 41
- 238000004043 dyeing Methods 0.000 description 38
- 150000003751 zinc Chemical class 0.000 description 31
- 230000008569 process Effects 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 24
- 230000003287 optical effect Effects 0.000 description 22
- 238000005406 washing Methods 0.000 description 21
- 238000002834 transmittance Methods 0.000 description 19
- 239000000853 adhesive Substances 0.000 description 13
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- 239000012153 distilled water Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 9
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- -1 iodine ions Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
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- DKNPRRRKHAEUMW-UHFFFAOYSA-N Iodine aqueous Chemical compound [K+].I[I-]I DKNPRRRKHAEUMW-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920001230 polyarylate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
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- 239000004698 Polyethylene Substances 0.000 description 1
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- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Definitions
- the present invention relates to a polarizer, a polarizing plate, and an image display device having excellent durability and heat resistance, and more particularly, to a polarizer, a polarizing plate having excellent durability and heat resistance, in which the content of zinc, boron, and iodine in a polarizing element is controlled to a specific range. And an image display apparatus.
- Polarizing plates are used in image display devices such as liquid crystal displays, organic light emitting (EL) displays, plasma display panels (PDPs), etc., and are required to have a high transmittance and a polarization degree in order to provide images with excellent color reproducibility.
- a polarizing plate is conventionally produced by dyeing a polyvinyl alcohol-based film using a dichroic iodine or a dichroic dye or the like, crosslinking, and then oriented by a method such as uniaxial stretching.
- an image display device using a polarizing plate is used for display panels of televisions, monitors, automobile dashboards, computers, notebooks, PDAs, telephones, TVs, audio / video devices, various office and industrial machines.
- the durability of the conventional polarizing plate has been improved by modifying the polyvinyl alcohol-based resin film itself and / or by using a non-sublimable dichroic dye instead of a sublimable iodine-based polarizer.
- a non-sublimable dichroic dye instead of a sublimable iodine-based polarizer.
- iodine or dichroic dye may not be sufficiently adsorbed to the polymer matrix, resulting in low polarization or poor transmittance due to modification of the matrix.
- the method using a non-sublimable dye has a problem in that it is difficult to control the orientation during the stretching of the PVA film and thus sufficient polarization cannot be obtained.
- the present invention provides a polarizing element exhibiting excellent durability and heat resistance.
- the present invention provides a polarizing plate and an image display device including a polarizing element exhibiting excellent durability and heat resistance.
- a polarizer is provided.
- a polarizing plate including a polarizing element according to an embodiment of the present invention is provided.
- an image display device including a polarizer or a polarizer according to one embodiment of the present invention.
- / I content (% by weight) to not less than 0.1 and not more than 3.0, the polarizing element, the polarizing plate and the image display apparatus including the same exhibit excellent initial orthogonal transmittance and color, and these characteristics are not only maintained, but also at high temperature conditions. Even when left unattended, it exhibits excellent durability and heat resistance in which initial excellent transmittance, polarization degree and color are maintained.
- the present inventors have studied the polarizer and the polarizing plate excellent in durability and heat resistance, the specific content relation of zinc, boron, iodine in the polarizer has a very close correlation with the heat resistance and durability, to improve the durability and heat resistance of the polarizer In order to control the specific relationship between zinc, boron and iodine rather than the zinc content of the polarizer itself, it was found that the durability and heat resistance of the polarizer were significantly increased.
- the positive reaction of the following Reaction Scheme 1 may be accelerated at high temperature, and the color change and polarization degree may be lowered after being left at high temperature.
- the heat resistance of the polarizing device is improved due to the addition of zinc, when the zinc is added in excess of an appropriate amount, the initial optical properties of the polarizing device become weak. Therefore, the zinc content in the polarizer should be controlled in an appropriate amount in terms of controlling the initial optical properties, durability and heat resistance of the polarizer.
- the zinc, boron and iodine contents in the polarizers are related to the initial optical properties, the heat resistance and the durability at high temperature conditions in the polarizers, respectively. Not only exhibits excellent initial optical properties such as initial color and polarization degree, but also exhibits excellent durability and heat resistance in which changes in initial excellent optical properties are minimized even when left under high temperature conditions. Accordingly, the present invention takes account of these characteristics of the polarizing element, so that the relation of the contents of zinc, boron and iodine in the polarizing element in a specific relation is controlled to satisfy a specific range.
- the Zn content (% by weight) x B content (weight) at all points where the depth D from the surface of the polarizer to the center (D) 0 ⁇ D ⁇ 200nm (nanometer) There is provided a polarizing element having a value of%) / I (% by weight) of 0.1 to 3.0.
- the polarizer is generally made of a polyvinyl alcohol-based film, and specifically, a film made of polyvinyl alcohol-based resin or a derivative thereof is used.
- a polyvinyl alcohol-based resin derivative any one generally known in the art may be used.
- modified polyvinyl alcohol-based resins copolymerized with unsaturated carboxylic acids or derivatives thereof, unsaturated sulfonic acids or derivatives thereof, and olefins such as ethylene and propylene can be used.
- the thickness of the polarizer is generally in the range of 20 ⁇ m (micrometer) to 34 ⁇ m (micrometer), and the polarizer according to one embodiment of the present invention is centered from the surface of the polarizer so as to exhibit not only heat resistance but also excellent initial color and degree of polarization.
- Zn * B / I value is very large at the surface of the polarizer because Zn is mainly concentrated on the surface of the polarizer with less heat resistance.
- a large Zn * B / I value is not maintained from the surface of the polarizer to the depth D to 200 nm (nanometer) from the center. That is, the conventional polarizer breaks the polarization of oriented iodine because excess zinc is concentrated on the surface, and thus the initial optical properties are degraded.
- the polarizer in which zinc is concentrated only on the surface of the polarizer exhibits poor heat resistance compared to the polarizer capable of reacting zinc with iodine and boron over a wider area, since zinc reacts with iodine and boron only in a limited region. .
- a polarizer having a value of 0.1 ⁇ Zn * B / I ⁇ 3.0 from a surface of a polarizer to a depth D of 200 nm (nanometer) in a center may be formed in a wider area. It is estimated that zinc salt reacts with the boron component, for example, to form zinc borate, and the zinc borate thus formed absorbs and / or blocks heat supplied from the outside, It is considered that the reaction of iodine is suppressed and, therefore, the heat resistance of the polarizing element according to the present invention is improved.
- the specific content relation of zinc, boron and iodine in the polarizer has a very close correlation with the heat resistance of the polarizer, and the depth (D) from the surface of the polarizer to the center (D) is 0 ⁇ D ⁇ 200nm (nanometer).
- a polarizer having a Zn * B / I value of 0.1 or more at the point exhibits excellent initial orthogonal transmittance, maintains color, and exhibits excellent durability and heat resistance in which transmittance, polarization degree and color are maintained even under high temperature conditions. If the Zn * B / I value exceeds 3.0, the initial optical properties become weak.
- the Zn * B / I value exceeding 3.0 means that the Zn content in the polarizer is excessively large or the I content is excessively small.
- the initial optical properties become weak. Therefore, in the polarizer according to the present invention, Zn * B / I values are controlled to 0.1 to 3.0 at all points where 0 ⁇ D ⁇ 200 nm (nanometer).
- the Zn * B / I values are measured by the ESCA method at all points having a depth D of 0 ⁇ D ⁇ 200 nm (nanometer) from the surface of the polarizer.
- the photon spectroscopy (XPS or ESCA) ESCALAB 250 (VG) is used to obtain the Zn * B / I value, zinc, boron and iodine content in the polarizer by the ESCA method.
- the Zn * B / I value at every point where the depth D from the surface of the polarizer to the center D 0 ⁇ D ⁇ 200 nm (ie, up to 200 nm (nanometer) from the surface) is determined by the polarizer. Is obtained by etching for 2000 seconds to a depth of up to 200 nm (nanometer) at 0.1 nm (nanometer) / sec and analyzed by Electron Spectroscopy of Chemical Analysis (ESCA) analysis.
- ESCA Electron Spectroscopy
- the Zn * B / I value is calculated as the weight of zinc, boron, and iodine, respectively, but the atomic% (at%) of zinc, boron, and iodine is measured at all points of the actual polarizer. It is calculated from the weight of each element component.
- the polarizer according to the embodiment of the present invention may be manufactured by the following method so that the above Zn * B / I range of the value is satisfied.
- a polarizer is generally produced by dyeing, crosslinking, stretching, washing with water and drying an unstretched polyvinyl alcohol-based resin (PVA) film.
- PVA polyvinyl alcohol-based resin
- the dyeing, crosslinking, and stretching steps may be performed separately or simultaneously, and the order of each step is also variable, and the order of reaction steps is not fixed.
- the dyeing step is a step of dyeing iodine or dye on a polyvinyl alcohol-based resin film, and dyeing iodine molecules or dyes having dichroism on the polyvinyl alcohol-based resin film.
- the iodine molecule or dye molecule absorbs light oscillating in the stretching direction of the polarizing plate and transmits light oscillating in the vertical direction, thereby obtaining polarized light having a specific vibration direction.
- dyeing is performed by impregnating a polyvinyl alcohol-based resin film in an iodine solution.
- the dyeing step is 0.05 to 0.2% by weight (weight percent) of iodine concentration, 0.2 to 1.5% by weight (weight percent) of potassium iodide concentration and 20 to 40 °C (degrees)
- the polyvinyl alcohol-based film is immersed in a dyeing aqueous solution of 20 to 35 ° C. (degrees) for 150 seconds to 300 seconds.
- the iodine concentration in the dyeing solution of the dyeing step is less than 0.05% by weight is not preferable because the transmittance of the polarizer is too high, if it exceeds 0.2% by weight is not preferable because the transmittance of the polarizer is too low.
- the potassium iodide concentration is less than 0.2% by weight, the amount of potassium iodide used as a dissolving aid of iodine is insufficient, so that iodine is not properly dissolved.
- the potassium iodide concentration exceeds 1.5% by weight, the solubility of potassium iodide itself in water and It is not preferable because foreign matter may occur.
- the temperature of the iodine solution is less than 20 ° C, the degree of dissolution of iodine and potassium iodide in water becomes weak, and the dyeing (dyeing) rate on the PVA film is low. It is not preferable because iodine may sublimate.
- the transmittance of the polarizing element it is preferable to immerse in 300 seconds or less.
- the iodine molecules or dye molecules are adsorbed onto the polymer matrix of the polyvinyl alcohol film by a hydroxyl group (OH) generated in an aqueous solution by at least one boron donor selected from the group consisting of boric acid, borate and borax. . If iodine molecules or dye molecules are not properly adsorbed on the polymer matrix, the polarization degree is reduced, the polarizer can not play its original role.
- OH hydroxyl group
- Crosslinking is generally performed by immersing a polyvinyl alcohol-based film in a crosslinking aqueous solution containing a boron component-providing material, but may also be performed by spraying or applying a crosslinking aqueous solution to a PVA film.
- the crosslinking step is boron concentration of 0.36 ⁇ 0.83% by weight (weight percent), potassium iodide concentration of 4-7% by weight (weight percent) and the temperature of 15 ⁇ 60 °C ( It is performed by immersing a PVA film for 30 to 120 second in the bridge
- crosslinking aqueous solution which is FIG.
- the PVA film may not be sufficiently crosslinked and the initial optical properties and durability become weak, and if it exceeds 0.83%, the solubility in water is not preferable. not.
- at least one or more selected from the group consisting of boric acid, borate, and borax may be used as the boron component providing material.
- potassium iodide or the like may be added to the crosslinking aqueous solution, such that iodine ions may be included in the crosslinking aqueous solution.
- a polarizer having little coloration that is, a neutral gray polarizer that provides an approximately constant absorbance for all wavelength ranges of visible light can be obtained.
- the concentration of potassium iodide in the crosslinked aqueous solution is preferably 4% by weight or more in order to achieve an appropriate neutral gray color.
- the temperature of the crosslinked aqueous solution is less than 15 ° C., the boron component providing material is not sufficiently dissolved. If the temperature exceeds 60 ° C., the boron component providing material is introduced into the film due to the high temperature. The reaction in which the component donor is eluted is more prevalent and no suitable crosslinking reaction occurs.
- the immersion time of the polyvinyl alcohol-based film or the dyed polyvinyl alcohol-based film in the cross-linking aqueous solution is less than 30 seconds, boron component providing material does not sufficiently penetrate in the depth direction of the PVA film 120 can not be properly crosslinked If it exceeds the second, the crosslinking proceeds excessively due to excessive inflow of the boron component providing material into the PVA film, thereby weakening the initial optical properties of the polarizer.
- the stretching step refers to stretching the film uniaxially so that the polymers of the film are oriented in a constant direction.
- the iodine molecules or dye molecules are arranged side by side in the stretching direction, so that the iodine molecules (I 2 ) or the dye molecules show dichroism, so the light oscillating in the stretching direction is absorbed and the light oscillating in the vertical direction is transmitted.
- the stretching method can be divided into wet drawing method and dry drawing method, and the dry drawing method is again an inter-roll drawing method, a heating roll drawing method, a compression drawing method, a tenter drawing method, and the like.
- the wet stretching method a tenter stretching method, an inter-roll stretching method, or the like can be used.
- the stretching method in the present invention is not particularly limited, and any stretching method known in the art may be used. Both the wet stretching method and the dry stretching method may be used, or may be used in combination if necessary.
- the stretching process may be performed simultaneously or separately with the dyeing process or the crosslinking process.
- the temperature of the stretching bath may be 35 ° C. to 60 ° C., preferably 40 ° C. to 60 ° C.
- the temperature of the soft bath is preferably 35 ° C. to 60 ° C. in view of smooth stretching of the PVA film, stretching process efficiency, prevention of film breakage during stretching, and the like.
- the stretching process is performed simultaneously with the dyeing process, it is preferable that the stretching process is performed in the dye aqueous solution. If the stretching step is performed simultaneously with the crosslinking step, it is preferably performed in the crosslinking aqueous solution.
- the stretching time is not particularly limited, and the dyeing, crosslinking, separate zinc salt treatment, or separate phosphate treatment process, when performed with dyeing, crosslinking, separate zinc salt treatment, or separate phosphate treatment process It can also be performed in a time range.
- the wet stretching step is not particularly limited, stretching may be performed in the range of 60 seconds to 120 seconds in consideration of the orientation of the PVA film, the optical characteristics of the polarizing element, the process efficiency, and the like.
- the zinc content of the polarizing device according to the present invention is a polarizing device in relation to the boron and iodine content by adding zinc salt to at least one or more of the dyeing step, crosslinking step, wet drawing step and separate zinc salt treatment step It is possible to adjust the Zn * B / I value to be more than 0.1 and less than 3.0 at all points of medium depth (D) 0 ⁇ D ⁇ 200nm (nanometer).
- the zinc salt may be added to any one of at least one of the dyeing step, the crosslinking step, the wet drawing step and the separate zinc salt treating step, and it is more preferably added to the plurality of steps.
- the content of the zinc salt in the aqueous solution may be 0.4% by weight (wt%) to 7.0% by weight (wt%), preferably 0.5 to 6.5% by weight, more preferably 0.5 to 3.0% by weight, based on the weight of the aqueous solution. If the content of zinc salt is less than 0.4% by weight, the effect of improving durability is insignificant, and if it exceeds 7.0% by weight, foreign matter may occur on the surface of the polarizer due to solubility problems and the like. Even when the zinc salt is added to two or more processes, it may be added in an amount of 0.4 wt% to 7 wt% in the aqueous solution of each process.
- the zinc salt treatment When the zinc salt treatment is performed together with a dyeing, crosslinking or wet stretching step, the zinc salt treatment can be performed under dyeing, crosslinking or wet stretching step conditions (aqueous solution temperature and dipping time).
- the separate zinc salt treatment process may be performed at any stage before the washing step, but it is most effective to be performed just before the washing step.
- the zinc salt treatment step in particular, when the zinc salt treatment step is performed in a separate step immediately before the washing step, for example, but not limited to, solubility of the zinc salt,
- the PVA film may be immersed in an aqueous zinc salt solution at 15 ° C. to 40 ° C. for 20 to 60 seconds.
- zinc salt zinc chloride, zinc iodide, zinc sulfate, zinc nitrate, zinc acetate, or the like may be used alone or as a mixture of two or more thereof.
- the zinc salt may be added to an aqueous solution prepared in advance in each step (for example, an aqueous solution of iodine and potassium iodide in the dyeing step, a cross-linking aqueous solution in the crosslinking step) or in the preparation of the aqueous solution in each step.
- Zinc salts may also be added with iodine, potassium iodide and / or boron component providing materials.
- the temperature in the above-mentioned temperature range of the dyeing aqueous solution and / or the crosslinking aqueous solution is The higher, the more the zinc salt diffuses from the surface of the polarizing film to the deeper portion (in the thickness direction) of the polarizing element and can penetrate deeper in the 200 nm (nanometer) depth direction.
- the washing step is performed by immersing the polyvinyl alcohol-based film dyed, crosslinked and stretched in pure water such as ion-exchanged water or distilled water at a temperature of 25 to 30 ° C (degrees) for 10 to 30 seconds. If the temperature of the pure water is less than 25 °C (degrees) is not preferable in dissolving and removing foreign matters, and if it exceeds 30 °C (degrees), it is not preferable because excessive elution of boron, potassium, zinc, phosphorus, etc. from the PVA film not.
- pure water such as ion-exchanged water or distilled water
- the immersion time of the polyvinyl alcohol-based film on the pure water is less than 10 seconds, the water washing effect is insignificant, and if it exceeds 30 seconds, elution of boron, potassium, zinc, phosphorus, etc. from the PVA film is not preferable.
- Water washing is performed after the dyeing, crosslinking and stretching step to remove foreign substances remaining on the surface of the polarizer.
- foreign substances remaining on the surface of the polarizing element are removed, as well as boric acid, iodine, potassium iodide, and zinc salts contained in the polyvinyl alcohol-based film are eluted with a washing solution to remove from the polyvinyl alcohol-based film (polarizing element). Some are removed.
- water washing is performed in consideration of the content of iodine, potassium iodide, boron component providing compound, zinc salt and the like used in the dyeing step and the crosslinking step, Zn * at the depth (D) of the polarizing element 0 ⁇ D ⁇ 200nm (nanometer) It is preferable to immerse the polarizer for 10 to 30 seconds in pure water at a temperature of 25 to 30 ° C (degrees) so that the B / I value is 0.1 or more and 3.0 or less.
- the washing step is different in order, the control of the substance content in the polarizing element is different, and therefore, it is preferable to perform the washing step immediately after the completion of the dyeing, crosslinking and stretching process and immediately before drying.
- the washed PVA film is placed in an oven and dried to obtain a polarizer.
- the drying step is generally carried out for 10 to 500 seconds at a temperature of 40 ⁇ 100 °C (degrees). If the drying temperature is less than 40 ° C (degrees), the moisture remaining in the PVA film is not enough to dry the film wrinkles, the color of the polarizer is not neutral gray (neutral gray) color becomes blue, the initial orthogonal physical properties This becomes vulnerable.
- the polarizer has a neutral gray color by properly adjusting the ratio of each iodine ion species through a reaction as in Scheme 1 above.
- this reaction is further accelerated by the heat supplied during the PVA film drying process, the polarizing film is close to the blue color in the previous step of color control by this principle. Therefore, when the temperature of the drying step is low, the reaction as shown in the above reaction does not occur smoothly, the color of the polarizing device is blue (bluish), and thus the initial orthogonal physical properties become weak. If the drying temperature exceeds 100 °C (degrees), the film is easily broken due to excessive drying, and the initial color of the polarizer becomes red outside the neutral gray, thereby making the initial optical properties weak.
- the drying time is less than 10 seconds, the drying is insufficient, and if it exceeds 500 seconds, the film is easily broken due to excessive drying, and the initial color of the polarizer is reddish out of neutral gray, which makes the initial optical property weak. Become.
- the iodine component, potassium iodide, and boron in at least one or more of the dyeing step, the crosslinking step and the stretching step so that the Zn * B / I value in the polarizing device is 0.1 or more and 3.0 or less.
- the content of the component providing substance and the zinc salt, the temperature of the dyeing solution and the crosslinking aqueous solution, and the immersion time, the washing temperature and the washing time of the polyvinyl alcohol-based film in these aqueous solutions can be controlled in the above ranges.
- a polarizing plate is manufactured by laminating a protective film on one or both surfaces of a polarizing device manufactured by the above method using an adhesive.
- the protective film is to prevent the exposure of the outer surface of the polarizing plate during the process and prevents the inflow of contaminants and protects the surface of the polarizing plate.
- an easy to manufacture film base material, good adhesion with a PVA film (polarizing element), and optically transparent may be preferably used, but not limited thereto.
- cellulose ester films such as triacetyl cellulose film (TAC film), cellulose acetate propionate film, polycarbonate film (PC film), polystyrene film, polyarylate film, norbornene resin film and polysulfone film are transparent. , Mechanical properties and optical anisotropy are preferred.
- Triacetyl cellulose film (TAC film) and polycarbonate film (PC film) are more preferably used because they are easily formed into a film and are excellent in workability, and in particular, TAC film is most preferably used.
- the polarizing plate protective film may be surface modified to improve adhesion to the PVA film to which the protective film is bonded.
- Specific examples of the surface treatment include corona discharge treatment, glow discharge treatment, flame treatment, acid treatment, alkali treatment, ultraviolet irradiation treatment, and the like.
- it is also preferably used to provide an undercoat layer.
- Surface modification treatment using a double alkali solution increases the adhesion of the protective film to the polarizer by introducing a -OH group to the hydrophobic protective film to modify the surface of the protective film to hydrophilic.
- an aqueous adhesive is generally used.
- any water-based adhesive generally used in the art may be used, but is not limited thereto.
- isocyanate-based adhesive, polyvinyl alcohol-based adhesive, gelatin-based adhesive, vinyl latex-based, water-based polyurethane , Aqueous polyester, and the like can be exemplified.
- a polyvinyl alcohol adhesive is used preferably.
- the water based adhesive may comprise a crosslinking agent.
- the adhesive is usually used as an aqueous solution.
- the aqueous solution concentration is not particularly limited, but is generally 0.1 to 15% by weight, preferably 0.5 to 10% by weight, and more preferably about 0.5 to 5% by weight, in consideration of coating properties and standing stability.
- the said adhesive agent can further mix
- the polarizing plate to which the protective film is adhered to one side or both sides of the polarizing element or the polarizing element is not limited thereto.
- a liquid crystal display device an organic light emitting (EL) display device, a plasma display panel (PDP), or the like may be used.
- EL organic light emitting
- PDP plasma display panel
- a 75 ⁇ m (micrometer) thick polyvinyl alcohol film was immersed at 30 ° C. for 5 minutes in a dye bath containing a dyeing solution of 30 ° C. (degrees) having a concentration of 0.1% by weight of iodine and 1% by weight of potassium iodide. Stained.
- A. Dyeing step The dyed polyvinyl alcohol film was stretched five times by immersing in a crosslinked aqueous solution at 40 ° C. (degrees) having a concentration of 5% by weight of potassium iodide and 0.64% by weight of boron for 120 seconds.
- B. Bridge and drawing stage The PVA polarizer obtained by the above process was placed in an oven and dried at 80 ° C. for 5 minutes.
- a TAC film having a thickness of 80 ⁇ m (micrometer) was bonded to both surfaces of the polarizer with a polyvinyl alcohol adhesive and dried at 80 ° C. for 5 minutes to prepare a polarizer.
- a polarizing device and a polarizing plate were manufactured in the same manner as in Comparative Example 1 except that 1.0 wt% of zinc nitrate was added in the crosslinking and stretching step (B).
- a polarizing device and a polarizing plate were manufactured in the same manner as in Comparative Example 1, except that zinc nitrate was added at 4.0 wt% in the crosslinking and stretching step (B).
- the iodine concentration is 0.4% by weight, the potassium iodide concentration is 8% by weight, and in the crosslinking and stretching step (B), the boron concentration is 0.91% by weight, the potassium iodide concentration is 9% by weight and the temperature of the crosslinking aqueous solution is 62%.
- the polarizing element was adjusted to °C (degree), the zinc chloride concentration was added at 0.16% by weight, and immersed in distilled water of 15 °C (degree) for 1 second in the washing step (C) in the same manner as in Comparative Example 1 And a polarizing plate was prepared.
- a polarizing element and a polarizing plate were manufactured in the same manner as in Comparative Example 1 except that the potassium iodide concentration was 0.01 wt% and the zinc chloride concentration was 3.0 wt% in the crosslinking and stretching step (B).
- the iodine concentration is adjusted to 0.03% by weight
- the boron concentration is 0.46% by weight
- zinc nitrate is 1.0% by weight
- the temperature of the crosslinking aqueous solution is adjusted to 50 ° C (degrees).
- a polarizing element and a polarizing plate were manufactured in the same manner as in Comparative Example 1, except that it was immersed in distilled water at 15 ° C. for 1 second.
- the crosslinking and stretching step (B) was carried out by adding a 2.0 wt% zinc nitrate to the temperature of the crosslinked aqueous solution at 50 ° C (degrees), and then immersed in distilled water at 25 ° C (degrees) for 20 seconds to wash the water (C). Except for performing the polarizing element and the polarizing plate in the same manner as in Comparative Example 1.
- the crosslinking and stretching step (B) was carried out by adding a 3.0 wt% zinc sulfate to 55 ° C (degrees) at a temperature of the crosslinked aqueous solution, and then immersed in distilled water at 25 ° C (degrees) for 10 seconds to wash the water (C). Except for performing the polarizing element and the polarizing plate in the same manner as in Comparative Example 1.
- the crosslinking and stretching step (B) was carried out by adding the temperature of the crosslinked aqueous solution to 55 ° C (degrees), boron concentration of 0.55% by weight, and zinc chloride (2.0% by weight), followed by distilled water at 25 ° C (degrees).
- a polarizing element and a polarizing plate were manufactured in the same manner as in Comparative Example 1, except that the washing step (C) was performed by dipping for seconds.
- the crosslinking and stretching step (B) was carried out by adding the temperature of the crosslinked aqueous solution to 55 ° C (degrees), boron concentration of 0.46% by weight and zinc iodide (2.0% by weight), followed by distilled water at 25 ° C (degrees).
- a polarizing element and a polarizing plate were manufactured in the same manner as in Comparative Example 1, except that the washing step (C) was performed by dipping for seconds.
- the iodine concentration is adjusted to 0.12% by weight, the potassium iodide concentration to 1.2% by weight, respectively, in the crosslinking and stretching step (B), the boron concentration is 0.55% by weight, zinc acetate at 0.5% by weight and
- the polarizing device and the polarizing plate were prepared in the same manner as in Comparative Example 1 except that the temperature of the crosslinked aqueous solution was adjusted to 58 ° C. (degree) and immersed in distilled water at 25 ° C. (degrees) for 10 seconds in the washing step (C). .
- the iodine concentration is adjusted to 0.12% by weight, the potassium iodide concentration to 1.2% by weight, respectively, in the crosslinking and stretching step (B), the boron concentration is 0.46% by weight, zinc nitrate at 6.5% by weight and
- the polarizing device and the polarizing plate were prepared in the same manner as in Comparative Example 1 except that the temperature of the crosslinked aqueous solution was adjusted to 60 ° C (degrees) and immersed in distilled water at 30 ° C (degrees) for 20 seconds in the washing step (C). .
- the polarizing plates prepared by the methods of Comparative Examples 1-6 and Examples 1-6 were cut to a size of 50 mm x 50 mm, and then bonded to glass with an acrylic adhesive to prepare a specimen. Thereafter, the initial optical properties of each polarizing plate, that is, single transmittance (Ts), orthogonal transmittance (Tc), single color (a, b), and orthogonal color (x, y) were measured. Thereafter, the polarizing plate was left in an oven at 100 ° C. (degrees) for 500 hours, and the optical properties were measured again, and the optical properties before and after heat resistance were compared, and the relative change in ⁇ L * ab (delta L * ab) was orthogonal. The color x relative change and the Tc relative change are shown in Table 2 below. On the other hand, the polarizing plate manufacturing conditions of Comparative Example 1-6 and Example 1-6 are shown in Table 1.
- the optical properties were measured by an N & K analyzer (N & K Technology Inc.), and the single transmittance (Ts) and single color (a, b) were measured with one polarizer, and the orthogonal transmittance (Tc) and the orthogonal color (x , y) was cut in one direction of the polarizing plate, the other one in the direction perpendicular to the stretching direction, and the two polarized plates were orthogonal to each other so that the absorption axis is 90 ° (degrees), and then the transmittance was measured. .
- L *, a *, b * are the color values of the group state
- L *, a *, b * are the color L * values, a * values, b * value, measured using a N & K analyzer on a single polarizer specimen
- L * 0 , a * 0 and b * 0 are the color values of the initial single phase of the polarizer
- L * 500 , a * 500 , b * 500 is the color value of single phase measured after 500 hours in 100 °C (degree) oven.
- Tc (%) 100 * (Tc 500 -Tc 0 ) / Tc 0
- Tc 0 is the initial orthogonal transmittance of each polarizing plate
- Tc 500 is orthogonal transmittance measured after 500 hours standing in 100 ° C (degree) oven, and orthogonal transmittance (Tc) was measured at the same single transmittance (Ts.) Value).
- x (%) 100 * (x 500 -x 0 ) / x 0
- x is the color value of the orthogonal state of two polarizers.
- X represents the color value of the xyz Chromaticity coordinates, and is calculated from the orthogonal color value of the two polarizers with an N & K analyzer.
- N & K analyzer 0 silver Color value of initial orthogonal state of polarizer, x 500 Measured after 500 hours in an oven at 100 ° C Color value of the orthogonal state of the polarizing plate.
- Tc relative rate of change Example Tc (%) / Comparative Example 1 Tc (%)
- Electron Spectroscopy of Chemical Analysis (ESCA) analysis is performed by using an optoelectronic spectrometer (XPS or ESCA, model name ESCA LAB 250 system (VG)) to etch the surface of the polarizer step by step as shown in Table 3 below.
- XPS optoelectronic spectrometer
- ESCA model name ESCA LAB 250 system
- the atomic% (at%) of zinc, boron and iodine at the point corresponding to the depth was measured and the weight of each element component was calculated from this to obtain a Zn * B / I value.
- ESCA analysis conditions were as follows.
- Base chamber pressure 2.5 x 10 -10 mbar
- CAE Constant Analyzer Energy
- Charge Compensation Use low energy flood gun, no ion flood gun.
- the polarizing device was etched by the etching time of Table 3 to measure the contents of zinc, boron and iodine at a depth of 200 nm (nanometer) from the surface of the polarizing device. By etching for 10 seconds, the polarizing element 1 nm (nanometer) is etched. In this test, etching was carried out to a total depth of 200 nm (nanometer) (2000 seconds) in the steps as shown in Table 3 below, and the contents of zinc, boron and iodine at each point of the polarizer were measured.
- the polarization element depth (D) 0 to D ⁇ 200nm (nanometer) Zn * B / I value includes the polarization elements of Examples 1 to 6 satisfying the scope of the present invention It was confirmed that the polarizing plate was small in the color after heat resistance and the rate of change in the orthogonal transmittance. As described above, the polarizing element and the polarizing plate according to one embodiment of the present invention have excellent durability and heat resistance, so that the change in optical properties at a high temperature is small and excellent physical properties can be secured even from harsh conditions. However, the polarizing plates of Comparative Examples 2 to 6 showing a large Zn * B / I value only on the surface of the polarizing element showed poor durability and heat resistance compared to the polarizing plates of the examples.
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Abstract
Description
Claims (7)
- 편광소자 표면으로부터 중심으로의 깊이(D) 0≤D≤200nm(나노미터)인 모든 지점에서 아연함량(중량%, 중량 퍼센트)x붕소함량(중량%, 중량 퍼센트)/요오드함량(중량%, 중량 퍼센트) 값이 0.1 ~ 3.0인 편광소자.
- 제 1항에 있어서, 상기 아연 성분은 염화아연, 요오드화아연, 황산아연, 질산아연 및 초산아연으로 구성되는 그룹으로부터 선택된 최소 일종으로부터 유래함을 특징으로 하는 편광소자.
- 제 1항에 있어서, 상기 붕소성분은 붕산, 보레이트 및 보락스로 구성되는 그룹으로부터 선택된 최소 일종으로부터 유래함을 특징으로 하는 편광소자.
- 제 1항에 있어서, 상기 요오드 성분은 요오드(I2) 및 요오드화 칼륨으로 구성되는 그룹으로부터 선택된 최소 일종으로부터 유래함을 특징으로 하는 편광소자.
- 제 1항에 있어서, 편광소자 표면으로부터 중심으로의 깊이(D) 0≤D≤200nm(나노미터)인 모든 지점에서 아연함량(중량%)x붕소함량(중량%)/요오드함량(중량%) 값은편광소자를 0.1㎚(나노미터)/sec(초)로 최대 200nm(나노미터) 깊이까지 2000초 동안 에칭하여 ESCA(Electron Spectroscopy of Chemical Analysis)분석법으로 얻어짐을 특징으로 하는 편광소자.
- 청구항 1 내지 5중 어느 한항의 편광소자를 포함하는 편광판.
- 청구항 1 내지 5중 어느 한항의 편광소자를 포함하는 화상표시장치.
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US13/147,555 US20110310481A1 (en) | 2009-02-03 | 2010-02-03 | Polarization device, polarization plate and video display device having superior durability and heat resistance |
JP2011547816A JP2012517025A (ja) | 2009-02-03 | 2010-02-03 | 耐久性及び耐熱性に優れた偏光素子、偏光板、画像表示装置 |
CN2010800064338A CN102301261A (zh) | 2009-02-03 | 2010-02-03 | 具有优异耐久性和耐热性的偏振片件、偏振板及视频显示器 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN103091760A (zh) * | 2011-11-07 | 2013-05-08 | 第一毛织株式会社 | 具有提高的光耐久性的偏振器及其制备方法 |
CN113614591A (zh) * | 2019-03-20 | 2021-11-05 | 三星Sdi株式会社 | 偏振板及包括其的光学显示装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2020204330A1 (ko) * | 2019-03-29 | 2020-10-08 | 주식회사 엘지화학 | 광학 적층체 |
JP2022527886A (ja) * | 2019-03-29 | 2022-06-07 | エルジー・ケム・リミテッド | 光学積層体 |
KR102484679B1 (ko) * | 2019-03-29 | 2023-01-05 | 주식회사 엘지화학 | 광학 적층체 |
WO2020204331A1 (ko) * | 2019-03-29 | 2020-10-08 | 주식회사 엘지화학 | 광학 적층체 |
JP2022150490A (ja) * | 2021-03-26 | 2022-10-07 | 住友化学株式会社 | 偏光フィルム及び偏光板の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004240042A (ja) * | 2003-02-04 | 2004-08-26 | Fuji Photo Film Co Ltd | 偏光板 |
JP2005266048A (ja) * | 2004-03-17 | 2005-09-29 | Sumitomo Chemical Co Ltd | ヨウ素系偏光フィルム、その製造方法及びそれを用いた偏光板 |
KR20080093361A (ko) * | 2007-04-16 | 2008-10-21 | 닛토덴코 가부시키가이샤 | 편광판, 광학 필름 및 화상 표시 장치 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3979688B2 (ja) * | 1996-11-07 | 2007-09-19 | 日本合成化学工業株式会社 | 偏光フィルムの製造方法 |
JP2000035512A (ja) * | 1998-07-17 | 2000-02-02 | Sumitomo Chem Co Ltd | 偏光フィルム |
TWI243264B (en) * | 2000-12-04 | 2005-11-11 | Fuji Photo Film Co Ltd | Optical compensating sheet and process for producing it, polarizing plate and liquid crystal display device |
JP4043263B2 (ja) * | 2002-03-18 | 2008-02-06 | 日東電工株式会社 | 偏光子の製造方法、偏光子、偏光板および画像表示装置 |
US20070035681A1 (en) * | 2003-09-19 | 2007-02-15 | Masaru Okada | Polarizing film, polarizing plate and liquid crystal display device |
JP2006047978A (ja) * | 2004-06-29 | 2006-02-16 | Nitto Denko Corp | 偏光子、その製造方法、偏光板、光学フィルムおよび画像表示装置 |
US7839569B2 (en) * | 2004-09-22 | 2010-11-23 | Fujifilm Corporation | Polarizing plate and liquid crystal display |
-
2010
- 2010-02-03 WO PCT/KR2010/000672 patent/WO2010090449A2/ko active Application Filing
- 2010-02-03 JP JP2011547816A patent/JP2012517025A/ja active Pending
- 2010-02-03 KR KR1020100010171A patent/KR20100089793A/ko active Search and Examination
- 2010-02-03 US US13/147,555 patent/US20110310481A1/en not_active Abandoned
- 2010-02-03 CN CN2010800064338A patent/CN102301261A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004240042A (ja) * | 2003-02-04 | 2004-08-26 | Fuji Photo Film Co Ltd | 偏光板 |
JP2005266048A (ja) * | 2004-03-17 | 2005-09-29 | Sumitomo Chemical Co Ltd | ヨウ素系偏光フィルム、その製造方法及びそれを用いた偏光板 |
KR20080093361A (ko) * | 2007-04-16 | 2008-10-21 | 닛토덴코 가부시키가이샤 | 편광판, 광학 필름 및 화상 표시 장치 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103091760A (zh) * | 2011-11-07 | 2013-05-08 | 第一毛织株式会社 | 具有提高的光耐久性的偏振器及其制备方法 |
CN113614591A (zh) * | 2019-03-20 | 2021-11-05 | 三星Sdi株式会社 | 偏振板及包括其的光学显示装置 |
CN113614591B (zh) * | 2019-03-20 | 2023-11-03 | 三星Sdi株式会社 | 偏振板及包括其的光学显示装置 |
Also Published As
Publication number | Publication date |
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KR20100089793A (ko) | 2010-08-12 |
WO2010090449A3 (ko) | 2010-11-25 |
JP2012517025A (ja) | 2012-07-26 |
CN102301261A (zh) | 2011-12-28 |
US20110310481A1 (en) | 2011-12-22 |
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