GB1462978A - Optical apparatus - Google Patents
Optical apparatusInfo
- Publication number
- GB1462978A GB1462978A GB1670974A GB1670974A GB1462978A GB 1462978 A GB1462978 A GB 1462978A GB 1670974 A GB1670974 A GB 1670974A GB 1670974 A GB1670974 A GB 1670974A GB 1462978 A GB1462978 A GB 1462978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- field
- uniaxial
- view
- april
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
-
- 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
- G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
- G02F2413/01—Number of plates being 1
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
1462978 Controlling light RANK ORGANISATION Ltd 16 April 1975 [17 April 1974] 16709/74 Heading G2F When a "twisted" layer of nematic liquid crystal material with positive dielectric anisotropy is subjected to an electric field across its thickness so that it changes from an optically active state to a uniaxial state with its optic axis substantially perpendicular to the plane of the layer, the resulting field of view of the layer as disposed between polarisers is restricted due to alteration of the polarisation of off-axis rays, as in conoscopic interference figures. The field of view is broadened by disposing a uniaxial crystal plate parallel to the liquid crystal layer, the two uniaxial optic axes being parallel and the signs of their optical anisotropics being different. The presence of the crystal plate reduces the field of view of the unenergized layer, and preferably the plate is chosen such that the fields are substantially equal in the presence and absence of an electric field across the nematic layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1670974A GB1462978A (en) | 1974-04-17 | 1974-04-17 | Optical apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1670974A GB1462978A (en) | 1974-04-17 | 1974-04-17 | Optical apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1462978A true GB1462978A (en) | 1977-01-26 |
Family
ID=10082256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1670974A Expired GB1462978A (en) | 1974-04-17 | 1974-04-17 | Optical apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1462978A (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984004403A1 (en) * | 1983-04-22 | 1984-11-08 | Bosch Gmbh Robert | Device for reducing the residual transmission in liquid crystal displays |
US4674841A (en) * | 1985-03-08 | 1987-06-23 | Tektronix, Inc. | Color filter switchable among three state via a variable retarder |
EP0349900A2 (en) * | 1988-07-04 | 1990-01-10 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
EP0350383A2 (en) * | 1988-07-04 | 1990-01-10 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
EP0379315A2 (en) * | 1989-01-19 | 1990-07-25 | Seiko Epson Corporation | Electro-optical liquid crystal device |
US5124824A (en) * | 1988-12-07 | 1992-06-23 | Mitsubishi Denki Kabushiki Kaisha | Liquid crystal display device comprising a retardation compensation layer having a maximum principal refractive index in the thickness direction |
US5150237A (en) * | 1989-05-15 | 1992-09-22 | Ricoh Company, Ltd. | Liquid crystal display element |
US5157529A (en) * | 1990-05-16 | 1992-10-20 | U.S. Philips Corporation | Display device having wavelength-dependent birefringence compensation |
US5171488A (en) * | 1990-08-28 | 1992-12-15 | Stanley Electric Co., Ltd. | Method of manufacturing an optical compensator |
US5175638A (en) * | 1989-09-12 | 1992-12-29 | Ricoh Company, Ltd. | ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions |
US5179456A (en) * | 1990-10-01 | 1993-01-12 | Stanley Electric Co., Ltd. | Optical birefringence compensator |
US5184237A (en) * | 1990-03-27 | 1993-02-02 | Ricoh Company, Ltd. | Super-twisted nematic type liquid crystal display device |
US5189538A (en) * | 1988-11-04 | 1993-02-23 | Fuji Photo Film Co., Ltd. | Liquid crystal display having positive and negative birefringent compensator films |
US5194975A (en) * | 1989-03-28 | 1993-03-16 | Asahi Glass Company Ltd. | Liquid crystal display device having biaxial birefringent plates at each side of the liquid crystal layer |
US5250214A (en) * | 1990-04-09 | 1993-10-05 | Ricoh Company, Ltd. | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer |
US5298199A (en) * | 1990-10-17 | 1994-03-29 | Stanley Electric Co., Ltd. | Optical birefringence compensator adapted for LCD |
US5344513A (en) * | 1990-08-28 | 1994-09-06 | Stanley Electric Co., Ltd. | Method of manufacturing laminated transparent substrate having birefringence |
US5380459A (en) * | 1990-04-20 | 1995-01-10 | Ricoh Company, Ltd. | Liquid crystal display device with improved viewing angle dependence of color |
US5413657A (en) * | 1992-06-03 | 1995-05-09 | Nippon Oil Company, Limited | Method of making compensator for liquid crystal display |
US5430566A (en) * | 1991-11-08 | 1995-07-04 | Sumitomo Chemical Company, Limited | Liquid crystal device with phase retarder having layered inorganic compound |
US5491001A (en) * | 1991-09-03 | 1996-02-13 | Nippon Oil Company, Limited | Method for producing viewing angle compensator for liquid crystal display |
US5493429A (en) * | 1990-10-26 | 1996-02-20 | Ricoh Company, Ltd. | Color liquid crystal device having thickness controlling layers disposed at non-pixel portions and between adjacent color filters |
US6411355B1 (en) | 1995-08-17 | 2002-06-25 | Toshiba Techno Center Inc. | Liquid crystal display device with compensation for viewing angle dependency and optical anisotropic element used therein |
US6661488B1 (en) | 1997-06-12 | 2003-12-09 | Fujitsu Limited | Vertically-alligned (VA) liquid crystal display device |
US7075602B2 (en) | 2001-10-15 | 2006-07-11 | Sharp Kabushiki Kaisha | Substrate for reflective liquid crystal display device and reflective liquid crystal display device using the same wherein the reflective surface is a wrinkled pattern of small mirrors |
US7570332B2 (en) | 1998-05-16 | 2009-08-04 | Samsung Electronics Co., Ltd. | Liquid crystal displays having multi-domains and a manufacturing method thereof |
US7583345B2 (en) | 1999-10-01 | 2009-09-01 | Samsung Electronics Co., Ltd. | Liquid crystal display |
US7768615B2 (en) | 1997-05-29 | 2010-08-03 | Samsung Electronics Co., Ltd. | Liquid crystal display having wide viewing angle |
-
1974
- 1974-04-17 GB GB1670974A patent/GB1462978A/en not_active Expired
Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984004403A1 (en) * | 1983-04-22 | 1984-11-08 | Bosch Gmbh Robert | Device for reducing the residual transmission in liquid crystal displays |
US4674841A (en) * | 1985-03-08 | 1987-06-23 | Tektronix, Inc. | Color filter switchable among three state via a variable retarder |
EP0349900A2 (en) * | 1988-07-04 | 1990-01-10 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
EP0350383A2 (en) * | 1988-07-04 | 1990-01-10 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
JPH0215239A (en) * | 1988-07-04 | 1990-01-18 | Stanley Electric Co Ltd | Compensated twisted nematic liquid crystal display device |
EP0349900A3 (en) * | 1988-07-04 | 1990-09-19 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
EP0350383A3 (en) * | 1988-07-04 | 1990-12-12 | Stanley Electric Co., Ltd. | Twisted nematic liquid crystal display device |
US5189538A (en) * | 1988-11-04 | 1993-02-23 | Fuji Photo Film Co., Ltd. | Liquid crystal display having positive and negative birefringent compensator films |
US5124824A (en) * | 1988-12-07 | 1992-06-23 | Mitsubishi Denki Kabushiki Kaisha | Liquid crystal display device comprising a retardation compensation layer having a maximum principal refractive index in the thickness direction |
EP0379315A2 (en) * | 1989-01-19 | 1990-07-25 | Seiko Epson Corporation | Electro-optical liquid crystal device |
EP0379315A3 (en) * | 1989-01-19 | 1991-04-24 | Seiko Epson Corporation | Electro-optical liquid crystal device |
US5194975A (en) * | 1989-03-28 | 1993-03-16 | Asahi Glass Company Ltd. | Liquid crystal display device having biaxial birefringent plates at each side of the liquid crystal layer |
US5150237A (en) * | 1989-05-15 | 1992-09-22 | Ricoh Company, Ltd. | Liquid crystal display element |
US5175638A (en) * | 1989-09-12 | 1992-12-29 | Ricoh Company, Ltd. | ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions |
US5184237A (en) * | 1990-03-27 | 1993-02-02 | Ricoh Company, Ltd. | Super-twisted nematic type liquid crystal display device |
US5250214A (en) * | 1990-04-09 | 1993-10-05 | Ricoh Company, Ltd. | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer |
US5380459A (en) * | 1990-04-20 | 1995-01-10 | Ricoh Company, Ltd. | Liquid crystal display device with improved viewing angle dependence of color |
US5157529A (en) * | 1990-05-16 | 1992-10-20 | U.S. Philips Corporation | Display device having wavelength-dependent birefringence compensation |
US5171488A (en) * | 1990-08-28 | 1992-12-15 | Stanley Electric Co., Ltd. | Method of manufacturing an optical compensator |
US5344513A (en) * | 1990-08-28 | 1994-09-06 | Stanley Electric Co., Ltd. | Method of manufacturing laminated transparent substrate having birefringence |
US5179456A (en) * | 1990-10-01 | 1993-01-12 | Stanley Electric Co., Ltd. | Optical birefringence compensator |
US5298199A (en) * | 1990-10-17 | 1994-03-29 | Stanley Electric Co., Ltd. | Optical birefringence compensator adapted for LCD |
US5493429A (en) * | 1990-10-26 | 1996-02-20 | Ricoh Company, Ltd. | Color liquid crystal device having thickness controlling layers disposed at non-pixel portions and between adjacent color filters |
US5491001A (en) * | 1991-09-03 | 1996-02-13 | Nippon Oil Company, Limited | Method for producing viewing angle compensator for liquid crystal display |
US5631755A (en) * | 1991-11-08 | 1997-05-20 | Sumitomo Chemical Company, Limited | Layered inorganic compound-containing phase retarder |
US5430566A (en) * | 1991-11-08 | 1995-07-04 | Sumitomo Chemical Company, Limited | Liquid crystal device with phase retarder having layered inorganic compound |
US5413657A (en) * | 1992-06-03 | 1995-05-09 | Nippon Oil Company, Limited | Method of making compensator for liquid crystal display |
US6411355B1 (en) | 1995-08-17 | 2002-06-25 | Toshiba Techno Center Inc. | Liquid crystal display device with compensation for viewing angle dependency and optical anisotropic element used therein |
US7768615B2 (en) | 1997-05-29 | 2010-08-03 | Samsung Electronics Co., Ltd. | Liquid crystal display having wide viewing angle |
US9041891B2 (en) | 1997-05-29 | 2015-05-26 | Samsung Display Co., Ltd. | Liquid crystal display having wide viewing angle |
USRE43123E1 (en) | 1997-06-12 | 2012-01-24 | Sharp Kabushiki Kaisha | Vertically-aligned (VA) liquid crystal display device |
US8134671B2 (en) | 1997-06-12 | 2012-03-13 | Sharp Kabushiki Kaisha | Liquid crystal display device |
US7227606B2 (en) | 1997-06-12 | 2007-06-05 | Sharp Kabushiki Kaisha | Vertically-alligned (VA) liquid crystal display device |
US7304703B1 (en) | 1997-06-12 | 2007-12-04 | Sharp Kabushiki Kaisha | Vertically-aligned (VA) liquid crystal display device |
US6661488B1 (en) | 1997-06-12 | 2003-12-09 | Fujitsu Limited | Vertically-alligned (VA) liquid crystal display device |
US8553188B2 (en) | 1997-06-12 | 2013-10-08 | Sharp Kabushiki Kaisha | Liquid crystal display device |
US7224421B1 (en) | 1997-06-12 | 2007-05-29 | Sharp Kabushiki Kaisha | Vertically-aligned (VA) liquid crystal display device |
US7965363B2 (en) | 1997-06-12 | 2011-06-21 | Sharp Kabushiki Kaisha | Vertically-aligned (VA) liquid crystal display device |
US7760305B2 (en) | 1997-06-12 | 2010-07-20 | Sharp Kabushiki Kaisha | Liquid crystal display device with multiple alignment structures |
US7167224B1 (en) | 1997-06-12 | 2007-01-23 | Sharp Kabushiki Kaisha | Vertically-aligned (VA) liquid crystal display device |
US7821603B2 (en) | 1997-06-12 | 2010-10-26 | Sharp Kabushiki Kaisha | Vertically-alligned (VA) liquid crystal display device |
US7573554B2 (en) | 1998-05-16 | 2009-08-11 | Samsung Electronics Co., Ltd. | Liquid crystal displays having multi-domains and a manufacturing method thereof |
US7570332B2 (en) | 1998-05-16 | 2009-08-04 | Samsung Electronics Co., Ltd. | Liquid crystal displays having multi-domains and a manufacturing method thereof |
US7583345B2 (en) | 1999-10-01 | 2009-09-01 | Samsung Electronics Co., Ltd. | Liquid crystal display |
US8174651B2 (en) | 1999-10-01 | 2012-05-08 | Samsung Electronics Co., Ltd. | Liquid crystal display |
US8456597B2 (en) | 1999-10-01 | 2013-06-04 | Samsung Display Co., Ltd. | Liquid crystal display |
US8817213B2 (en) | 1999-10-01 | 2014-08-26 | Samsung Display Co., Ltd. | Liquid crystal display |
US9557612B2 (en) | 1999-10-01 | 2017-01-31 | Samsung Display Co., Ltd. | Liquid crystal display |
US7075602B2 (en) | 2001-10-15 | 2006-07-11 | Sharp Kabushiki Kaisha | Substrate for reflective liquid crystal display device and reflective liquid crystal display device using the same wherein the reflective surface is a wrinkled pattern of small mirrors |
US7511786B2 (en) | 2001-10-15 | 2009-03-31 | Sharp Kabushiki Kaisha | Substrate for reflective liquid crystal display device and reflective liquid crystal display device using the same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |