KR20140091363A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- KR20140091363A KR20140091363A KR1020130003540A KR20130003540A KR20140091363A KR 20140091363 A KR20140091363 A KR 20140091363A KR 1020130003540 A KR1020130003540 A KR 1020130003540A KR 20130003540 A KR20130003540 A KR 20130003540A KR 20140091363 A KR20140091363 A KR 20140091363A
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- South Korea
- Prior art keywords
- polarizer
- liquid crystal
- crystal display
- polarizing plate
- upper polarizer
- Prior art date
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
The present invention relates to a liquid crystal display device.
2. Description of the Related Art A liquid crystal display device (LCD) is one of image display devices, and has advantages of realizing light weight shortening and low power consumption compared to a cathode ray tube (CRT), which is a typical image display device Since a liquid crystal display device is not a self light emitting device, unlike a CRT, a light source is required in addition to a liquid crystal panel. A fluorescent lamp is mainly used as a light source of such a liquid crystal display device, The lower polarizer plate and the upper polarizer plate are attached to the lower polarizer plate and the upper polarizer plate, respectively.
Usually, the polarizing plate has a structure in which a pressure-sensitive adhesive layer for bonding with a liquid crystal cell and a surface protective film are provided on one side of a laminate composed of a first polarizer protective film, a polarizer and a second polarizer protective film. At this time, a polarizing plate having the same configuration as the upper polarizer and the lower polarizer can be bonded to both sides of the liquid crystal cell.
In recent years, as the liquid crystal display device has become larger and thinner and its use has expanded, there has been an increasing demand for function improvement of the polarizing plate. Accordingly, polarizing plates having different characteristics as the upper polarizing plate and the lower polarizing plate have been applied . For example, as the upper polarizer, a polarizing plate having a wide view angle compensation film, a functional coating layer (hard coat layer, antistatic layer, antireflection layer, etc.) or a laminate thereof is applied on the viewer's side of the polarizer, As the polarizing plate, a polarizing plate provided with a brightness enhancement film, a diffusion protective film, a laminate thereof, or the like is applied on the backlight unit side surface of the polarizer, in addition to the polarizer protective film. The functional film, coating layer or laminate for imparting such different properties are different from each other in physical properties such as material, thickness, stretching direction, and moisture permeability.
Conventional polarizing plates include a polyvinyl alcohol (PVA) film stretched in a certain direction and dyed with a dichroic dye as a polarizer, and the stretched PVA film is contracted in the stretching axis direction according to a change in temperature or humidity . In particular, when a polarizing plate having a different functional film, a coating layer or a laminate on a polarizer is applied to the upper polarizer and the lower polarizer, the shrinkage ratio increases due to the difference in the moisture permeability, The phenomenon is severe. As a result, a phenomenon of light leakage may occur, which may cause defects of the liquid crystal panel.
Korean Patent Laid-Open Publication No. 2012-99172 discloses a polarizing plate, a manufacturing method thereof, and an image display apparatus using the same, but fails to provide an alternative to the above problem.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device with improved warpage and suppressed light leakage.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device in which a Newton ring phenomenon is suppressed.
1. A liquid crystal display device, comprising: an upper polarizer and a lower polarizer plate each including a polarizer having a protective film bonded to at least one surface thereof; and a liquid crystal cell disposed between the upper polarizer plate and the lower polarizer plate, Wherein the absorption axes of the upper polarizer and the lower polarizer are perpendicular to each other, the shrinking force of the lower polarizer is 3.5 N / 2 mm or less, and the shrinkage force of the lower polarizer / shrinkage force of the upper polarizer is 1 or less.
2. The liquid crystal display of claim 1, wherein the upper polarizer and the lower polarizer have a thickness of 15 to 35 占 퐉.
3. The liquid crystal display of claim 1, wherein the upper polarizer and the lower polarizer have the same thickness.
4. The liquid crystal display of claim 1, wherein the upper polarizer is bonded to the upper surface of the liquid crystal cell, and the lower polarizer is bonded to the lower surface of the liquid crystal cell.
5. The liquid crystal display of claim 4, wherein the lower polarizer plate has an optically functional layer on a side opposite to the side in contact with the liquid crystal cell.
6. The liquid crystal display according to 1 above, wherein the optically functional layer is selected from the group consisting of a reflection type polarization separation layer, a retardation layer, an antireflection layer, a reflection layer and a brightness enhancement layer.
INDUSTRIAL APPLICABILITY The present invention suppresses the warpage of a liquid crystal display device, in particular, the warping of the CAP type, thereby suppressing the occurrence of light leakage phenomenon and Newton ring phenomenon.
1 is a cross-sectional view showing an embodiment of a liquid crystal display device of the present invention.
Fig. 2 is a warp image of Example 1. Fig.
3 is a light source image of Example 1. Fig.
4 is a warp image of Comparative Example 3. Fig.
5 is a light source image of Comparative Example 3. Fig.
A liquid crystal cell is disposed between the upper polarizer plate and the lower polarizer plate, and the lower polarizer plate has an optical functional layer on at least one side thereof, and the liquid crystal cell is disposed between the upper polarizer plate and the lower polarizer plate. The upper polarizer plate and the lower polarizer plate each include a polarizer having a protective film, Wherein the absorption axes of the upper polarizer and the lower polarizer are perpendicular to each other, the shrinking force of the lower polarizer is 3.5 N / 2 mm or less, and the shrinkage force of the lower polarizer / shrinkage force of the upper polarizer is 1 or less, To a liquid crystal display device capable of suppressing warpage of a liquid crystal display device, in particular, CAP-type warpage, and suppressing occurrence of a light leakage phenomenon and a Newton ring phenomenon.
The liquid crystal display of the present invention includes an upper polarizer and a lower polarizer, each of which includes a polarizer having a protective film bonded to at least one surface thereof, and a liquid crystal cell is disposed between the upper polarizer and the lower polarizer, And the upper polarizer and the lower polarizer are arranged such that their absorption axes are perpendicular to each other.
Hereinafter, the present invention will be described in more detail with reference to the drawings.
Fig. 1 schematically shows a cross-sectional view of one embodiment of the liquid crystal display of the present invention.
In the present invention, the
The
The
The polyvinyl alcohol resin constituting the
Examples of the polyvinyl acetate resin include polyvinyl acetate, which is a homopolymer of vinyl acetate, and copolymers of vinyl acetate and other monomers copolymerizable therewith.
Other monomers copolymerizable with vinyl acetate include acrylamide monomers having an unsaturated carboxylic acid type, an unsaturated sulfonic acid type, an olefin type, a vinyl ether type, and an ammonium group. In addition, the polyvinyl alcohol resin may be modified. For example, polyvinyl formal or polyvinyl acetal modified with aldehydes may be used. The saponification degree of the polyvinyl alcohol resin is usually 85 to 100 mol%, preferably 98 mol% or more, and the polymerization degree is usually 1,000 to 10,000, preferably 1,500 to 5,000.
Such a polyvinyl alcohol-based resin film is used as the original film of the polarizer. The film forming method of the polyvinyl alcohol resin is not particularly limited, and a known method can be used. The thickness of the polyvinyl alcohol original film is not particularly limited, and may be, for example, 10 to 150 mu m.
(The contracting force of the lower polarizer) / (the contracting force of the upper polarizer) may be 1 or less, preferably 0.95 or less. It is possible to prevent warping of the liquid
The contracting force of the
The method of controlling the contracting force of the
The thickness of the
The thickness of the
The protective films (101a, b; 104a, b) are not particularly limited as long as they are films excellent in transparency, mechanical strength, thermal stability, moisture barrier properties and isotropy. Specifically, polyester films such as polyethylene terephthalate, polyethylene isophthalate and polybutylene terephthalate; Cellulose-based films such as diacetylcellulose and triacetylcellulose; Polycarbonate-based films; Acrylic films such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene-based films such as polystyrene and acrylonitrile-styrene copolymer; Polyolefin films; Vinyl chloride film; Polyamide-based films such as nylon and aromatic polyamide; Imidazole film; Sulfone based films; Polyether ketone-based films; A sulfided polyphenylene-based film; Vinyl alcohol film; Vinylidene chloride films; Vinyl butyral film; Allylate-based films; Polyoxymethylene-based films; Urethane-based films; Epoxy-based films; Silicone-based films, and the like. Among them, a cellulose-based film having a surface saponified (saponified) by alkali or the like is preferable in consideration of polarization characteristics or durability. Further, the
The bonding may be made of an adhesive commonly used in the art for polarizing plate manufacture, and may be subjected to a drying step after bonding.
The drying temperature and time are not particularly limited, and can be performed, for example, at 40 to 100 DEG C for 20 to 1,200 seconds.
The
The
The
The optically
The optically
As the brightness enhancement layer, for example, a multilayer laminate of a dielectric multilayer film or a multilayer laminate of a thin film having a different refractive index anisotropy may be used (Sumitomo 3M Co., Ltd.) exhibiting properties of transmitting linearly polarized light of a predetermined polarization axis to reflect other light, Manufactured by Nippon Denshoku Industries Co., Ltd., D-BEF, etc.), an orientation film of cholesteric liquid crystal polymer, or a substrate on which the alignment liquid crystal layer is supported on a film base (PCF350 manufactured by Nitto Denko or Transmax manufactured by Merck) Or the like, which reflects circularly polarized light of other wavelengths and transmits other light.
Including the optically functional layer improves the optical performance of the liquid crystal display, but may cause warping of the liquid crystal display. However, since the warpage is improved in the liquid crystal display device of the present invention, the occurrence of warpage can be minimized even when the optical functional layer is included.
The bonding is performed by an adhesive layer.
The pressure-sensitive adhesive layer may be formed from a pressure-sensitive adhesive composition comprising a pressure-sensitive adhesive resin, a crosslinking agent and, if necessary, a silane coupling agent. As the pressure-sensitive adhesive resin, an acrylic-based or urethane-based resin may be used as a main component. Among them, an acrylic resin is preferable because of its good transparency.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.
Example One.
(1) Preparation of Upper Polarizer
A polyvinyl alcohol film having a thickness of 75 탆 was immersed in a 0.3% iodine aqueous solution at 30 캜 and stretched 3-fold, immersed in a crosslinking aqueous solution containing 4% boric acid at 60 캜 and 10% potassium iodide, . Thereafter, the substrate was immersed in a 1.5% aqueous solution of potassium iodide at 30 DEG C for 10 seconds, washed and dried at 50 DEG C for 4 minutes to prepare a polarizer.
A saponified cellulose triacetyl cellulose film having a thickness of 40 탆 was bonded to both sides of the prepared polarizer using a polyvinyl alcohol adhesive and dried at 60 캜 for 4 minutes to prepare a polarizing plate.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer except that the content of boric acid in the aqueous crosslinking solution was 2%.
Example 2.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1, except that the content of boric acid in the aqueous crosslinking solution was 6%.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
Example 3.
(1) Preparation of Upper Polarizer
The polarizing plate was prepared in the same manner as in the production of the upper polarizer of Example 1, except that the aqueous solution for crosslinking was stretched so that the boric acid content was 6% and the total stretching ratio was 6 times.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
Example 4.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
Comparative Example One.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the lower polarizing plate of Example 1.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
Comparative Example 2.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 2.
Comparative Example 3.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 2.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 2.
Comparative Example 4.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 3.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 2.
Comparative Example 5.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 1.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 3.
Comparative Example 6.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 2.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 3.
Comparative Example 7.
(1) Preparation of Upper Polarizer
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 3.
(2) Preparation of lower polarizer plate
A polarizing plate was prepared in the same manner as in the preparation of the upper polarizer of Example 3.
Experimental Example .
(1) Measurement of contraction force
The polarizers prepared in Examples and Comparative Examples were heated at 80 DEG C for 240 minutes, cut into a size of 10 mm * 2 mm (long side stretching direction), and measured for shrinkage force with SII SS6100 equipment.
The measurement results are shown in Table 1 below.
(2) Measurement of bending
The polarizing plates produced in the above Examples and Production Examples were bonded to both sides of 0.5 T Glass. Thereafter, the sample was allowed to stand in an oven at 60 DEG C for 24 hours, and then allowed to stand at room temperature for 2 hours. Thereafter, warpage was measured with a two-dimensional measuring machine of INTEK IMS Co. and the maximum value thereof is shown in Table 1 below.
The warp images of Example 1 and Comparative Example 3 are shown in Fig. 2 and Fig. 4, respectively.
(3) Light beam observe
The polarizing plates produced in the above Examples and Production Examples were bonded to both sides of 0.5 T Glass. Thereafter, it was left in an oven at 60 ° C for 24 hours, and then left at room temperature for 1 hour. Then, it was mounted on a backlight to observe whether light leakage occurred.
Observation results are shown in Table 1 below, and the light leakage images of Example 1 and Comparative Example 3 are shown in FIG. 3 and FIG. 5, respectively.
○: Light leakage occurs at the edge.
Δ: Light leakage occurs at the edge part finely.
Ⅹ: Light leakage phenomenon does not occur.
(N / 2 mm)
(N / 2 mm)
Referring to Table 1 and FIGS. 2 to 5, in Examples 1 to 4 in which the relationship between the contracting force of the lower polarizer and the contracting force of the upper polarizer is included in the scope of the present invention, the maximum value of the CAP type bending height is 0.13 to 0.22 It can be seen that the light leakage does not occur.
However, in Comparative Examples 1 to 7, the maximum value of the CAP type bending height was significantly bent to 0.37 to 0.63, and light leakage occurred at the edge portion.
100: liquid
102: upper polarizer 103: liquid crystal cell
104a, b: protective film 105: lower polarizer
106: Optical functional layer 107: Upper polarizer
108: Lower polarizer plate
Claims (6)
A liquid crystal cell is disposed between the upper polarizer and the lower polarizer,
Wherein the lower polarizer plate has an optically functional layer on at least one side thereof,
Wherein the upper polarizer and the lower polarizer have absorption axes perpendicular to each other,
The contracting force of the lower polarizer is 3.5 N / 2 mm or less,
(Shrinking force of the lower polarizer / shrinking force of the upper polarizer) is 1 or less.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020130003540A KR20140091363A (en) | 2013-01-11 | 2013-01-11 | Liquid crystal display device |
PCT/KR2013/011746 WO2014109489A1 (en) | 2013-01-11 | 2013-12-17 | Liquid crystal display |
CN201380069847.9A CN104919363A (en) | 2013-01-11 | 2013-12-17 | Liquid crystal display |
TW102146633A TW201428362A (en) | 2013-01-11 | 2013-12-17 | Liquid crystal display device |
JP2015552567A JP2016504632A (en) | 2013-01-11 | 2013-12-17 | Liquid crystal display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020130003540A KR20140091363A (en) | 2013-01-11 | 2013-01-11 | Liquid crystal display device |
Publications (1)
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KR20140091363A true KR20140091363A (en) | 2014-07-21 |
Family
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Family Applications (1)
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KR1020130003540A KR20140091363A (en) | 2013-01-11 | 2013-01-11 | Liquid crystal display device |
Country Status (5)
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JP (1) | JP2016504632A (en) |
KR (1) | KR20140091363A (en) |
CN (1) | CN104919363A (en) |
TW (1) | TW201428362A (en) |
WO (1) | WO2014109489A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023287136A1 (en) * | 2021-07-16 | 2023-01-19 | 동우 화인켐 주식회사 | Optical laminate and manufacturing method therefor, smart window comprising same, and window and door for vehicle and building, having same applied thereto |
WO2023008859A1 (en) * | 2021-07-26 | 2023-02-02 | 동우 화인켐 주식회사 | Optical laminate and smart window comprising same |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4888853B2 (en) | 2009-11-12 | 2012-02-29 | 学校法人慶應義塾 | Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same |
EP2587304B1 (en) | 2010-06-22 | 2019-12-18 | Toyobo Co., Ltd. | Liquid crystal display device, polarizer and protective film |
KR101719862B1 (en) | 2011-05-18 | 2017-03-24 | 도요보 가부시키가이샤 | Liquid crystal display device, polarizing plate, and polarizer protection film |
JP6180113B2 (en) | 2011-05-18 | 2017-08-16 | 東洋紡株式会社 | Polarizing plate and liquid crystal display device suitable for three-dimensional image display compatible liquid crystal display device |
US10234727B2 (en) * | 2014-10-28 | 2019-03-19 | Sharp Kabushiki Kaisha | Mirror display comprising a half mirror plate including a reflective polarizer and a polarization conversion layer |
JP2017156399A (en) * | 2016-02-29 | 2017-09-07 | 住友化学株式会社 | Set of polarizing plates and liquid crystal panel |
JP6205089B1 (en) * | 2016-03-31 | 2017-09-27 | 東洋紡株式会社 | Liquid crystal display |
TWI683143B (en) | 2017-07-14 | 2020-01-21 | 南韓商Lg化學股份有限公司 | Polarizing plate and display device |
JP2018067020A (en) * | 2018-01-23 | 2018-04-26 | 住友化学株式会社 | Set of polarizing plates and liquid crystal panel |
KR20200087435A (en) * | 2019-01-11 | 2020-07-21 | 주식회사 엘지화학 | Polarizing Plate |
KR102621169B1 (en) * | 2019-01-11 | 2024-01-05 | 산진 옵토일렉트로닉스 (난징) 컴퍼니 리미티드 | Preparation Method of Polarizing Plate |
KR102662107B1 (en) * | 2019-01-11 | 2024-05-02 | 산진 옵토일렉트로닉스 (난징) 컴퍼니 리미티드 | Preparation Method of Polarizing Plate |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002006133A (en) * | 2000-06-19 | 2002-01-09 | Nitto Denko Corp | Polarizing element, polarizing plate, and liquid crystal display device employing the same |
TWI296727B (en) * | 2001-09-19 | 2008-05-11 | Nitto Denko Corp | Polarizing plate and method of manufacturing the same, and liquid crystal display using the polarizing plate |
KR100978951B1 (en) * | 2003-12-05 | 2010-08-31 | 엘지디스플레이 주식회사 | Liquid Crystal Panel using for Liquid Crystal Display Device |
JP3985969B2 (en) * | 2004-09-29 | 2007-10-03 | 日東電工株式会社 | Liquid crystal panel and liquid crystal display device |
JP2009109993A (en) * | 2007-10-12 | 2009-05-21 | Sumitomo Chemical Co Ltd | Set of polarizing plate, liquid crystal panel using the same, and liquid crystal display device |
KR20110130573A (en) * | 2010-05-28 | 2011-12-06 | 동우 화인켐 주식회사 | Liquid crystal display device |
-
2013
- 2013-01-11 KR KR1020130003540A patent/KR20140091363A/en not_active Application Discontinuation
- 2013-12-17 TW TW102146633A patent/TW201428362A/en unknown
- 2013-12-17 JP JP2015552567A patent/JP2016504632A/en active Pending
- 2013-12-17 CN CN201380069847.9A patent/CN104919363A/en active Pending
- 2013-12-17 WO PCT/KR2013/011746 patent/WO2014109489A1/en active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023287136A1 (en) * | 2021-07-16 | 2023-01-19 | 동우 화인켐 주식회사 | Optical laminate and manufacturing method therefor, smart window comprising same, and window and door for vehicle and building, having same applied thereto |
WO2023008859A1 (en) * | 2021-07-26 | 2023-02-02 | 동우 화인켐 주식회사 | Optical laminate and smart window comprising same |
Also Published As
Publication number | Publication date |
---|---|
WO2014109489A1 (en) | 2014-07-17 |
CN104919363A (en) | 2015-09-16 |
JP2016504632A (en) | 2016-02-12 |
TW201428362A (en) | 2014-07-16 |
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