HK1014273A1 - Liquid crystal electrooptical device - Google Patents

Liquid crystal electrooptical device

Info

Publication number
HK1014273A1
HK1014273A1 HK98115540A HK98115540A HK1014273A1 HK 1014273 A1 HK1014273 A1 HK 1014273A1 HK 98115540 A HK98115540 A HK 98115540A HK 98115540 A HK98115540 A HK 98115540A HK 1014273 A1 HK1014273 A1 HK 1014273A1
Authority
HK
Hong Kong
Prior art keywords
liquid crystal
electrooptical device
crystal electrooptical
liquid
electrooptical
Prior art date
Application number
HK98115540A
Other languages
English (en)
Inventor
Takaaki Tanaka
Yuzuru Sato
Original Assignee
Seiko Epson Corp
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.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of HK1014273A1 publication Critical patent/HK1014273A1/xx

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
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1391—Bistable or multi-stable liquid crystal cells
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
    • 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
    • G02F1/133371—Cells with varying thickness of the liquid crystal layer
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0469—Details of the physics of pixel operation
    • G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
    • G09G2300/0482—Use of memory effects in nematic liquid crystals
    • G09G2300/0486—Cholesteric liquid crystals, including chiral-nematic liquid crystals, with transitions between focal conic, planar, and homeotropic states
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal Display Device Control (AREA)
HK98115540A 1992-07-16 1998-12-24 Liquid crystal electrooptical device HK1014273A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP18943692 1992-07-16
JP19703492 1992-07-23
JP21793192 1992-08-17
JP26383692 1992-10-01
JP33905192 1992-12-18
JP19560193A JP3634390B2 (ja) 1992-07-16 1993-07-14 液晶電気光学素子

Publications (1)

Publication Number Publication Date
HK1014273A1 true HK1014273A1 (en) 1999-09-24

Family

ID=27553615

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98115540A HK1014273A1 (en) 1992-07-16 1998-12-24 Liquid crystal electrooptical device

Country Status (6)

Country Link
US (2) US5488499A (xx)
EP (1) EP0579247B1 (xx)
JP (1) JP3634390B2 (xx)
KR (1) KR100312926B1 (xx)
DE (1) DE69328852T2 (xx)
HK (1) HK1014273A1 (xx)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3753440B2 (ja) * 1992-05-07 2006-03-08 セイコーエプソン株式会社 液晶表示装置及び液晶表示装置の駆動方法
DE69318062T2 (de) * 1992-05-07 1998-10-01 Seiko Epson Corp Flüssigkristallanzeigegerät mit zwei metastabilen Zuständen und Steuerverfahren dafür
JP3634390B2 (ja) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 液晶電気光学素子
JP3489169B2 (ja) 1993-02-25 2004-01-19 セイコーエプソン株式会社 液晶表示装置の駆動方法
US6154190A (en) * 1995-02-17 2000-11-28 Kent State University Dynamic drive methods and apparatus for a bistable liquid crystal display
KR100254647B1 (ko) 1995-05-17 2000-05-01 야스카와 히데아키 액정 표시 장치와 그 구동 방법 및 이에 이용되는 구동 회로 및 전원 회로 장치
JPH09304764A (ja) * 1996-05-15 1997-11-28 Nec Corp 液晶表示装置
CN1145835C (zh) 1995-07-17 2004-04-14 精工爱普生株式会社 反射型彩色液晶装置及使用反射型彩色液晶装置的电子设备
US7289174B1 (en) 1995-07-17 2007-10-30 Seiko Epson Corporation Reflective type color liquid crystal device and an electronic apparatus using this
JPH0968721A (ja) * 1995-08-31 1997-03-11 Sharp Corp 液晶表示素子
JP2728059B2 (ja) * 1995-10-06 1998-03-18 日本電気株式会社 反射型液晶表示装置
EP0863427B1 (en) 1996-08-19 2001-04-18 Seiko Epson Corporation Method of driving liquid crystal device
US6046716A (en) 1996-12-19 2000-04-04 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
US6078303A (en) 1996-12-19 2000-06-20 Colorado Microdisplay, Inc. Display system having electrode modulation to alter a state of an electro-optic layer
JP3529999B2 (ja) * 1997-02-06 2004-05-24 株式会社リコー 液晶セルおよびその駆動方法
US6133895A (en) * 1997-06-04 2000-10-17 Kent Displays Incorporated Cumulative drive scheme and method for a liquid crystal display
JP3061119B2 (ja) 1997-07-15 2000-07-10 日本電気株式会社 液晶表示装置
JPH1152431A (ja) * 1997-07-31 1999-02-26 Ricoh Co Ltd 液晶表示素子
GB9717597D0 (en) * 1997-08-21 1997-10-22 Sharp Kk Liquid crystal device
JP2000098393A (ja) * 1998-09-21 2000-04-07 Sharp Corp 液晶表示装置
CA2297872A1 (en) * 1999-02-05 2000-08-05 Varintelligent (Bvi) Limited Bistable twisted nematic lcd
EP1170624A1 (en) * 2000-07-05 2002-01-09 Rolic AG Nematic liquid crystal electrooptical element and device
DE60139937D1 (de) * 2000-07-05 2009-10-29 Rolic Ag Elektrooptisches element und vorrichtung, welche nematische flüssigkristalle verwenden
US6674494B2 (en) * 2000-12-28 2004-01-06 Optrex Corporation Liquid crystal optical element and test method for its boundary layer
US7253861B2 (en) * 2000-12-28 2007-08-07 Asahi Glass Company Liquid crystal optical element comprising a resin layer having a surface hardness of b or less
FR2829244B1 (fr) * 2001-08-29 2004-09-10 Nemoptic Dispositif d'affichage bistable a cristal liquide nematique a masque optique perfectionne
US6784955B2 (en) * 2001-10-01 2004-08-31 The Hong Kong University Of Science And Technology Optically optimized permanently bistable twisted nematic liquid crystal displays
US20110199671A1 (en) * 2002-06-13 2011-08-18 E Ink Corporation Methods for driving electrophoretic displays using dielectrophoretic forces
US20130063333A1 (en) 2002-10-16 2013-03-14 E Ink Corporation Electrophoretic displays
FR2847704B1 (fr) * 2002-11-26 2005-01-28 Nemoptic Procede et dispositif perfectionnes d'affichage a cristal liquide nematique bistable
FR2863062B1 (fr) * 2003-11-28 2006-03-17 Nemoptic Dispositif d'affichage a ecran de type nematique bistable optimisant le noir et procede de definition de ce dispositif
FR2863061B1 (fr) * 2003-11-28 2006-02-24 Nemoptic Dispositif d'affichage a ecran de type nematique optimisant le blanc et procede de definition de ce dispositif
US8045115B2 (en) * 2006-12-22 2011-10-25 Chimei Innolux Corporation Liquid crystal display with different twisting directions of liquid crystal molecules
US8203123B2 (en) * 2009-03-10 2012-06-19 Alliant Techsystems Inc. Neutron detection by neutron capture-initiated relaxation of a ferroelectrically, ferromagnetically, and/or chemically metastable material
KR101333614B1 (ko) * 2010-06-25 2013-11-27 엘지디스플레이 주식회사 액정표시장치
CN109817128A (zh) * 2019-01-28 2019-05-28 云谷（固安）科技有限公司 一种假压对位的方法及装置
CN110824789B (zh) * 2019-10-16 2020-10-27 深圳市华星光电技术有限公司 液晶显示装置
US11086162B1 (en) * 2020-04-26 2021-08-10 Tcl China Star Optoelectronics Technology Co., Ltd. Display panel and display device

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL15741C (xx) * 1923-03-05
IT946051B (it) * 1970-12-04 1973-05-21 Hoffmann La Roche Cellula ottica
US3837730A (en) * 1973-11-28 1974-09-24 Bell Telephone Labor Inc Matrix-addressed liquid crystal display
JPS5341199A (en) * 1976-08-31 1978-04-14 Sharp Corp Liquid crystal color display unit
US4239345A (en) * 1979-04-16 1980-12-16 Bell Telephone Laboratories, Incorporated Bistable liquid crystal twist cell
US4333708A (en) * 1979-11-30 1982-06-08 Bell Telephone Laboratories, Incorporated Mechanically multistable liquid crystal cell
US4367924A (en) * 1980-01-08 1983-01-11 Clark Noel A Chiral smectic C or H liquid crystal electro-optical device
US4505548A (en) * 1980-10-20 1985-03-19 At&T Bell Laboratories Bistable liquid crystal twist cell
US4529271A (en) * 1982-03-12 1985-07-16 At&T Bell Laboratories Matrix addressed bistable liquid crystal display
FR2532453A1 (fr) * 1982-08-25 1984-03-02 Western Electric Co Dispositif d'affichage a cristaux liquides bistable utilisant des tensions de preparation
US4717243A (en) * 1982-08-25 1988-01-05 American Telephone And Telegraph Company, At&T Bell Laboratories Bistable liquid crystal display utilizing priming voltages
US4601544A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4601542A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4601543A (en) * 1982-10-15 1986-07-22 At&T Bell Laboratories Nematic liquid crystal storage display device
US4566758A (en) * 1983-05-09 1986-01-28 Tektronix, Inc. Rapid starting, high-speed liquid crystal variable optical retarder
US4582396A (en) * 1983-05-09 1986-04-15 Tektronix, Inc. Field sequential color display system using optical retardation
IN161652B (xx) * 1983-07-12 1988-01-09 Bbc Brown Boveri & Cie
US4664483A (en) * 1984-02-24 1987-05-12 U.S. Philips Corporation Liquid crystal display device with a hysteresis
US4701026A (en) * 1984-06-11 1987-10-20 Seiko Epson Kabushiki Kaisha Method and circuits for driving a liquid crystal display device
GB2173337B (en) * 1985-04-03 1989-01-11 Stc Plc Addressing liquid crystal cells
US4850676A (en) * 1985-07-31 1989-07-25 Seiko Epson Corporation Method for driving a liquid crystal element
US4770500A (en) * 1986-06-10 1988-09-13 Kaiser Aerospace And Electronics Corporation Method and apparatus for multi color display
US5189535A (en) * 1986-12-11 1993-02-23 Fujitsu Limited Liquid crystal display element and method for driving same
US4952032A (en) * 1987-03-31 1990-08-28 Canon Kabushiki Kaisha Display device
US5010328A (en) * 1987-07-21 1991-04-23 Thorn Emi Plc Display device
JPH078581B2 (ja) * 1987-09-14 1995-02-01 株式会社日立製作所 液晶光スイツチ駆動方法
US5119220A (en) * 1988-01-28 1992-06-02 Sanyo Electric Co., Ltd. Liquid crystal display device with a phase plate for shadow compensation
JP2770365B2 (ja) * 1989-01-17 1998-07-02 富士通株式会社 液晶表示素子
GB2233106B (en) * 1989-05-23 1993-08-25 Citizen Watch Co Ltd Ferroelectric liquid crystal element and method of driving the same
US5065695A (en) * 1989-06-16 1991-11-19 Nordson Corporation Apparatus for compensating for non-linear flow characteristics in dispensing a coating material
JPH03125119A (ja) * 1989-10-09 1991-05-28 Sharp Corp 液晶素子の駆動方法
JPH03177817A (ja) * 1989-12-06 1991-08-01 Toshiba Corp アクティブマトリクス型液晶表示素子
JP2924055B2 (ja) * 1989-12-08 1999-07-26 セイコーエプソン株式会社 反射型液晶表示素子
GB2249653B (en) * 1990-10-01 1994-09-07 Marconi Gec Ltd Ferroelectric liquid crystal devices
JP2794499B2 (ja) * 1991-03-26 1998-09-03 株式会社半導体エネルギー研究所 半導体装置の作製方法
EP0536975B1 (en) * 1991-10-07 1997-06-04 Fujitsu Limited Method of driving surface-stabilised ferroelectric liquid crystal display element for increasing the number of gray scales
JP3634390B2 (ja) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 液晶電気光学素子

Also Published As

Publication number Publication date
JP3634390B2 (ja) 2005-03-30
KR100312926B1 (ko) 2001-12-28
JPH06235920A (ja) 1994-08-23
US6072558A (en) 2000-06-06
KR940005979A (ko) 1994-03-22
DE69328852D1 (de) 2000-07-20
DE69328852T2 (de) 2000-12-28
EP0579247A1 (en) 1994-01-19
EP0579247B1 (en) 2000-06-14
US5488499A (en) 1996-01-30

Similar Documents

Publication Publication Date Title
HK1014273A1 (en) Liquid crystal electrooptical device
HK1008697A1 (en) Liquid crystal device
EP0470817A3 (en) Liquid crystal electro-optical device
EP0589478A3 (en) Liquid crystal display device.
EP0570001A3 (en) Liquid crystal display device.
EP0509727A3 (en) Liquid crystal display device
SG46342A1 (en) Liquid crystal device
EP0600279A3 (en) Liquid crystal display device.
EP0576931A3 (en) Liquid crystal display device
GB2274652B (en) Liquid crystal device
EP0604226A3 (en) Liquid crystal display device.
GB9211283D0 (en) Liquid crystal display devices
EP0500117A3 (en) Liquid crystal display device
GB9211731D0 (en) Electrooptical liquid crystal system
GB9223741D0 (en) Liquid crystal device
GB2261741B (en) Liquid crystal device
EP0531122A3 (en) Liquid crystal display device
EP0508592A3 (en) Liquid crystal display device
TW359371U (en) Liquid crystal display device
GB2264713B (en) Liquid crystal device
KR960008980B1 (en) Liquid crystal display device
EP0572078A3 (en) Liquid crystal display devices
GB9224542D0 (en) Ferroelectric liquid crystal device
GB9307202D0 (en) Electrooptical liquid crystal system
EP0460657A3 (en) Liquid crystal device

Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20120716