GB1462978A – Optical apparatus
– Google Patents
GB1462978A – Optical apparatus
– Google Patents
Optical apparatus
Info
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
1974-04-17
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
Application number
GB1670974A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rank Organization Ltd
Original Assignee
Rank Organization Ltd
Priority date (The priority date 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 date listed.)
1974-04-17
Filing date
1974-04-17
Publication date
1977-01-26
1974-04-17
Application filed by Rank Organization Ltd
filed
Critical
Rank Organization Ltd
1974-04-17
Priority to GB1670974A
priority
Critical
patent/GB1462978A/en
1977-01-26
Publication of GB1462978A
publication
Critical
patent/GB1462978A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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.
GB1670974A
1974-04-17
1974-04-17
Optical apparatus
Expired
GB1462978A
(en)
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)
* Cited by examiner, † Cited by third party
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)
* Cited by examiner, † Cited by third party
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
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1997-06-12
2012-03-13
Sharp Kabushiki Kaisha
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US7227606B2
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1997-06-12
2007-06-05
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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
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1997-06-12
2013-10-08
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US7224421B1
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1997-06-12
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Vertically-aligned (VA) liquid crystal display device
US7965363B2
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1997-06-12
2011-06-21
Sharp Kabushiki Kaisha
Vertically-aligned (VA) liquid crystal display device
US7760305B2
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1997-06-12
2010-07-20
Sharp Kabushiki Kaisha
Liquid crystal display device with multiple alignment structures
US7167224B1
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1997-06-12
2007-01-23
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Vertically-aligned (VA) liquid crystal display device
US7821603B2
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1997-06-12
2010-10-26
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Vertically-alligned (VA) liquid crystal display device
US7573554B2
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1998-05-16
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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
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US8174651B2
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US7075602B2
(en)
2001-10-15
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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
1977-06-10
PS
Patent sealed
1979-12-05
PCNP
Patent ceased through non-payment of renewal fee
