KR100779307B1 - 편광판 - Google Patents
편광판 Download PDFInfo
- Publication number
- KR100779307B1 KR100779307B1 KR1020010069363A KR20010069363A KR100779307B1 KR 100779307 B1 KR100779307 B1 KR 100779307B1 KR 1020010069363 A KR1020010069363 A KR 1020010069363A KR 20010069363 A KR20010069363 A KR 20010069363A KR 100779307 B1 KR100779307 B1 KR 100779307B1
- Authority
- KR
- South Korea
- Prior art keywords
- film
- retardation
- light
- retardation film
- polarizing element
- Prior art date
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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
-
- 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
- G02B5/3083—Birefringent or phase retarding 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133634—Birefringent elements, e.g. for optical compensation the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
회전각 0도 | 회전각 75도 | 색상차 | |||||||
L | a | b | △E0 | L | a | b | △E75 | △E75-0 | |
실시예 1 | 2.120 | 1.405 | -1.734 | 3.078 | 2.147 | 1.481 | -2.313 | 3.486 | 0.585 |
실시예 2 | 2.108 | 1.472 | -1.685 | 3.074 | 3.134 | 1.445 | 1.602 | 3.805 | 3.444 |
실시예 3 | 2.071 | 1.478 | -1.239 | 2.830 | 2.788 | 1.5 | -2.943 | 4.323 | 1.849 |
비교예 1 | 1.998 | 1.523 | -1.121 | 2.751 | 17.42 | 3.755 | 5.398 | 18.620 | 16.891 |
비교예 2 | 2.152 | 1.448 | -1.387 | 2.941 | 11.25 | 3.889 | 6.443 | 13.535 | 12.249 |
비교예 3 | 2.588 | 1.914 | -1.652 | 3.618 | 24.9 | 8.335 | 7.462 | 27.298 | 24.942 |
비교예 4 | 2.082 | 1.397 | -1.505 | 2.924 | 9.833 | 5.005 | -4.316 | 11.848 | 9.000 |
비교예 5 | 2.045 | 1.618 | -1.540 | 3.028 | 13.9 | 4.11 | -7.645 | 16.387 | 13.565 |
비교예 6 | 2.176 | 1.362 | -2.326 | 3.464 | 3.492 | 5.318 | -6.862 | 9.357 | 6.161 |
Claims (4)
- 편광소자; 및파장 550㎚의 광에 대한 면내 위상차가 190 내지 320㎚인 2층의 위상차 필름으로 구성된 하나 이상의 투명 보호 필름을 포함하는 편광판으로서,상기 투명 보호 필름이 상기 편광소자의 양면중 한면에 결합되고,각각의 위상차 필름의 지상축(遲相軸)이 편광소자의 흡수축과 평행이 되도록 하고, 상기 2층의 위상차 필름이 하기 수학식 1 및 수학식 2의 조건에서 0.65 내지 0.85의 Nz를 갖는 위상차 필름과 0.15 내지 0.35의 Nz를 갖는 위상차 필름의 조합으로 구성되는 편광판:수학식 1nx>ny수학식 2Nz=(nx-nz)/(nx-ny)상기 식에서,nx 및 ny는 각각 상기 위상차 필름의 면내 굴절율이고;nz는 상기 위상차 필름의 두께 방향의 굴절율이다.
- 제 1 항에 있어서,0.65 내지 0.85의 Nz를 갖는 위상차 필름이 편광소자 측에 배치된 편광판.
- 제 1 항에 있어서,편광소자가 흡수 2색성인 편광판.
- 제 3 항에 있어서,상기 흡수 2색성 편광소자가, 요오드 또는 2색성 염료를 함유하는 폴리비닐알콜 화합물의 일축 연신 필름으로 이루어지는 편광판.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2000-00340416 | 2000-11-08 | ||
JP2000340416A JP2002148433A (ja) | 2000-11-08 | 2000-11-08 | 偏光板 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020035791A KR20020035791A (ko) | 2002-05-15 |
KR100779307B1 true KR100779307B1 (ko) | 2007-11-23 |
Family
ID=18815335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020010069363A KR100779307B1 (ko) | 2000-11-08 | 2001-11-08 | 편광판 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6961180B2 (ko) |
EP (1) | EP1205775B1 (ko) |
JP (1) | JP2002148433A (ko) |
KR (1) | KR100779307B1 (ko) |
TW (1) | TWI224686B (ko) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1496376B1 (en) * | 2002-03-25 | 2011-06-15 | Zeon Corporation | Optical film and process for producing the same |
KR100925330B1 (ko) * | 2002-11-26 | 2009-11-04 | 엘지디스플레이 주식회사 | 액정표시장치 편광판 제조방법 |
WO2005050299A1 (ja) | 2003-11-21 | 2005-06-02 | Zeon Corporation | 液晶表示装置 |
WO2005050301A1 (ja) | 2003-11-21 | 2005-06-02 | Zeon Corporation | 液晶表示装置 |
JP3841306B2 (ja) * | 2004-08-05 | 2006-11-01 | 日東電工株式会社 | 位相差フィルムの製造方法 |
JP2006091836A (ja) * | 2004-08-26 | 2006-04-06 | Nitto Denko Corp | 位相差フィルムおよびその製造方法、ならびに、該位相差フィルムを用いた光学フィルム、液晶パネルおよび液晶表示装置 |
JP2006071705A (ja) * | 2004-08-31 | 2006-03-16 | Konica Minolta Opto Inc | 偏光板及び液晶表示装置 |
WO2008075540A1 (ja) * | 2006-12-21 | 2008-06-26 | Nitto Denko Corporation | 偏光子の製造方法、偏光子、偏光板および画像表示装置 |
JP4878306B2 (ja) * | 2007-02-09 | 2012-02-15 | 株式会社 日立ディスプレイズ | 液晶表示装置 |
CN104345372B (zh) * | 2013-08-09 | 2018-04-10 | 住友化学株式会社 | 光学膜 |
KR101691691B1 (ko) * | 2013-12-30 | 2016-12-30 | 제일모직주식회사 | 편광자, 이의 제조방법, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 |
JP6797537B2 (ja) * | 2016-03-11 | 2020-12-09 | 日東電工株式会社 | 光学補償層付偏光板およびそれを用いた有機elパネル |
JP7334047B2 (ja) * | 2019-03-13 | 2023-08-28 | 日東電工株式会社 | 画像表示装置および該画像表示装置に用いられる円偏光板 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04305602A (ja) * | 1991-04-02 | 1992-10-28 | Nitto Denko Corp | 偏光板及び液晶表示装置 |
KR19990044965A (ko) * | 1997-11-14 | 1999-06-25 | 야마모토 히데키 | 적층파장판, 원편광판 및 액정표시장치 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2441049A (en) * | 1944-09-29 | 1948-05-04 | Polaroid Corp | Composite achromatic wave plates comprising superimposed sheets of differently birefringent, molecularly oriented, transparent, solid, organic plastic material |
EP0350075A3 (en) * | 1988-07-08 | 1990-09-05 | Kabushiki Kaisha Toshiba | Liquid crystal display device |
JPH0223304A (ja) | 1988-07-12 | 1990-01-25 | Toray Ind Inc | 可視偏光フイルム |
JP3165178B2 (ja) | 1991-06-19 | 2001-05-14 | 日東電工株式会社 | 偏光板及び液晶表示装置 |
US5227903A (en) * | 1991-09-20 | 1993-07-13 | Casio Computer Co., Ltd. | Liquid crystal display device with at least one biaxial retardation film having nx >nz >ny |
US5594568A (en) * | 1993-12-15 | 1997-01-14 | Ois Optical Imaging Systems, Inc. | LCD with a pair of retardation films on one side of normally white liquid crystal layer |
-
2000
- 2000-11-08 JP JP2000340416A patent/JP2002148433A/ja active Pending
-
2001
- 2001-11-07 EP EP01126604A patent/EP1205775B1/en not_active Expired - Lifetime
- 2001-11-08 US US09/986,432 patent/US6961180B2/en not_active Expired - Lifetime
- 2001-11-08 TW TW090127742A patent/TWI224686B/zh not_active IP Right Cessation
- 2001-11-08 KR KR1020010069363A patent/KR100779307B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04305602A (ja) * | 1991-04-02 | 1992-10-28 | Nitto Denko Corp | 偏光板及び液晶表示装置 |
KR19990044965A (ko) * | 1997-11-14 | 1999-06-25 | 야마모토 히데키 | 적층파장판, 원편광판 및 액정표시장치 |
Also Published As
Publication number | Publication date |
---|---|
JP2002148433A (ja) | 2002-05-22 |
US20020089748A1 (en) | 2002-07-11 |
EP1205775A1 (en) | 2002-05-15 |
US6961180B2 (en) | 2005-11-01 |
KR20020035791A (ko) | 2002-05-15 |
TWI224686B (en) | 2004-12-01 |
EP1205775B1 (en) | 2004-10-20 |
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