ES8103395A1 - Perfeccionamientos en celulas de cristal liquido - Google Patents

Perfeccionamientos en celulas de cristal liquido

Info

Publication number
ES8103395A1
ES8103395A1 ES490587A ES490587A ES8103395A1 ES 8103395 A1 ES8103395 A1 ES 8103395A1 ES 490587 A ES490587 A ES 490587A ES 490587 A ES490587 A ES 490587A ES 8103395 A1 ES8103395 A1 ES 8103395A1
Authority
ES
Spain
Prior art keywords
cell
stable states
liquid crystal
crystal cell
stable
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
Application number
ES490587A
Other languages
English (en)
Other versions
ES490587A0 (es
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES490587A0 publication Critical patent/ES490587A0/es
Publication of ES8103395A1 publication Critical patent/ES8103395A1/es
Expired legal-status Critical Current

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
    • G02F1/137—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

CELULA DE CRISTAL LIQUIDO BIESTABLE. CONSTA DE UN LIQUIDO Y DE UN CRISTAL LIQUIDO COLESTERICO, ASI COMO DE SUPERFICIES LIMITROFES QUE ALINEAN EL CRISTAL LIQUIDO ADYACENTE A LAS SUPERFICIES. DICHA CELULA DISPONE DE MEDIOS ADECUADOS PARA APLICAR ENERGIA DE CONMUTACION Y POSEE AL MENOS DOS ESTADOS ESTABLES. LA TORSION DEL CRISTAL LIQUIDO QUEDA LIMITADA A UN VALOR DISTINTO A SU VALOR INERTE, AL MENOS EN UN ESTADO ESTABLE. DICHO VALOR INERTE SOBRE EL ESPESOR DE LA CELULA ESTA COMPRENDIDO ENTRE 90 Y 270G Y, PREFERENTEMENTE, EN EL INTERVALOR 180 +- G; SIENDO LA DIFERENCIA DE PASO ENTRE LOS DOS ESTADOS ESTABLES DE, APROXIMADAMENTE, 360G. EL CRISTAL LIQUIDO ESTA PRACTICAMENTE EXENTO DE DISCLINACIONES Y DE PAREDES EN LOS ESTADOS ESTABLES Y DURANTE LA CONMUTACION NO PASA NINGUNA DISCLINACION A TRAVES DE LA REGION ACTIVA. DE EMPLEO EN VISUALIZADORES DE CRISTAL LIQUIDO DE APARATOS ELECTRONICOS Y MAS CONCRETAMENTE DE RELOJES DIGITALES. E
ES490587A 1979-04-16 1980-04-15 Perfeccionamientos en celulas de cristal liquido Expired ES8103395A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/030,172 US4239345A (en) 1979-04-16 1979-04-16 Bistable liquid crystal twist cell

Publications (2)

Publication Number Publication Date
ES490587A0 ES490587A0 (es) 1981-02-16
ES8103395A1 true ES8103395A1 (es) 1981-02-16

Family

ID=21852872

Family Applications (1)

Application Number Title Priority Date Filing Date
ES490587A Expired ES8103395A1 (es) 1979-04-16 1980-04-15 Perfeccionamientos en celulas de cristal liquido

Country Status (7)

Country Link
US (1) US4239345A (es)
EP (1) EP0018180B1 (es)
JP (1) JPS55142318A (es)
KR (1) KR830002189B1 (es)
CA (1) CA1130486A (es)
DE (1) DE3068849D1 (es)
ES (1) ES8103395A1 (es)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333708A (en) * 1979-11-30 1982-06-08 Bell Telephone Laboratories, Incorporated Mechanically multistable liquid crystal cell
DE3140898A1 (de) * 1980-10-20 1982-06-24 Western Electric Co., Inc., 10038 New York, N.Y. Bistabile fluessigkristall-twistzelle
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
US4566758A (en) * 1983-05-09 1986-01-28 Tektronix, Inc. Rapid starting, high-speed liquid crystal variable optical retarder
JPS6050511A (ja) * 1983-08-31 1985-03-20 Hitachi Ltd 液晶表示素子
US4652088A (en) * 1984-02-01 1987-03-24 Hitachi, Ltd. Liquid crystal display device
US5016984A (en) * 1984-03-02 1991-05-21 Manchester R & D Partnership Liquid crystal motion picture projector with memory
US4603945A (en) * 1984-03-02 1986-08-05 Manchester R & D Partnership Liquid crystal graphics imager and method
US4693557A (en) * 1984-03-02 1987-09-15 Manchester R & D Partnership Liquid crystal motion picture projector
US5061041A (en) * 1984-03-02 1991-10-29 Manchester R&D Partnership Liquid crystal motion picture projector with memory
US4917476A (en) * 1985-06-21 1990-04-17 British Aerospace Public Limited Company Thermal imagers using liquid crystal sensing elements
US4643532A (en) * 1985-06-24 1987-02-17 At&T Bell Laboratories Field-assisted bonding method and articles produced thereby
EP0260450B1 (de) * 1986-09-12 1991-12-04 F. Hoffmann-La Roche Ag Flüssigkristallanzeige
JPH0754378B2 (ja) * 1986-12-11 1995-06-07 富士通株式会社 液晶駆動法
JP2607491B2 (ja) * 1986-12-18 1997-05-07 富士通株式会社 液晶駆動方法
DE69017483T2 (de) * 1989-03-14 1995-09-14 Daisow Co Ltd Vorrichtung mit ferroelektrischen Flüssigkristallen.
SG50667A1 (en) * 1992-02-21 1999-06-22 Rolic Ag Method and means for disclination-free orienting of liquid crystals
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
US6693696B1 (en) 1992-06-30 2004-02-17 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
JPH0618887A (ja) 1992-06-30 1994-01-28 Semiconductor Energy Lab Co Ltd 液晶電気光学装置
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
US5453862A (en) * 1992-09-04 1995-09-26 Stanley Electric Co., Ltd. Rubbing-free (chiral) nematic liquid crystal display
GB9402513D0 (en) * 1994-02-09 1994-03-30 Secr Defence Bistable nematic liquid crystal device
US5625477A (en) * 1994-04-11 1997-04-29 Advanced Display Systems, Inc. Zero field multistable cholesteric liquid crystal displays
US5748277A (en) * 1995-02-17 1998-05-05 Kent State University Dynamic drive method and apparatus for a bistable liquid crystal display
JP3577719B2 (ja) 1995-05-17 2004-10-13 セイコーエプソン株式会社 液晶表示装置及びその駆動方法並びにそれに用いる駆動回路
TW373095B (en) * 1995-06-15 1999-11-01 Canon Kk Method for driving optical modulation unit, optical modulation or image display system
FR2740894B1 (fr) * 1995-11-08 1998-01-23 Centre Nat Rech Scient Dispositif d'affichage perfectionne a base de cristaux liquides et a effet bistable
FR2740893B1 (fr) * 1995-11-08 1998-01-23 Centre Nat Rech Scient Dispositif d'affichage perfectionne a base de cristaux liquides et a effet bistable
FR2741165B1 (fr) * 1995-11-10 1998-01-30 Ist Naz Fisica Della Materia Dispositif d'affichage bistable a base de cristaux liquides nematiques autorisant des teintes de gris
JP3182070B2 (ja) 1996-01-16 2001-07-03 キヤノン株式会社 液晶素子及び液晶素子の駆動方法
DE69704607T2 (de) 1996-08-19 2001-09-13 Seiko Epson Corp., Tokio/Tokyo Verfahren zur ansteuerung einer flüssigkristall-anzeigevorrichtung
US6057817A (en) * 1996-12-17 2000-05-02 Casio Computer Co., Ltd. Liquid crystal display device having bistable nematic liquid crystal and method of driving the same
US5933203A (en) * 1997-01-08 1999-08-03 Advanced Display Systems, Inc. Apparatus for and method of driving a cholesteric liquid crystal flat panel display
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
JPH10274761A (ja) * 1997-03-28 1998-10-13 Chisso Corp 光散乱型液晶表示素子及び駆動方法
JPH1152431A (ja) * 1997-07-31 1999-02-26 Ricoh Co Ltd 液晶表示素子
JP3659013B2 (ja) 1997-10-22 2005-06-15 セイコーエプソン株式会社 液晶装置及びその駆動方法並びにそれを用いた電子機器
US6714276B2 (en) * 2000-02-08 2004-03-30 Sharp Kabushiki Kaisha Liquid crystal display device
KR100818193B1 (ko) 2000-07-05 2008-04-01 롤리크 아게 네마틱 액정 전기광학 소자 및 장치
FR2829244B1 (fr) * 2001-08-29 2004-09-10 Nemoptic Dispositif d'affichage bistable a cristal liquide nematique a masque optique perfectionne
JP4191407B2 (ja) * 2001-12-27 2008-12-03 富士通株式会社 表示装置及びその駆動方法
US7557884B2 (en) * 2003-10-23 2009-07-07 Hong Kong University Of Science And Technology Bistable liquid crystal device
FR2874447B1 (fr) * 2004-08-17 2007-01-12 Nemoptic Sa Dispositif afficheur a cristal liquide comprenant des moyens perfectionnes de commutation a la peripherie de l'afficheur
US7948464B2 (en) * 2004-09-29 2011-05-24 Citizen Holdings Co., Ltd. Memory-type liquid crystal display device
CN100498909C (zh) * 2005-03-02 2009-06-10 胜华科技股份有限公司 双稳态液晶显示器的驱动方法
US7551252B2 (en) * 2005-11-29 2009-06-23 The Hong Kong University Of Science And Technology Bistable twisted nematic liquid crystal display based on dual frequency operation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3650603A (en) * 1967-12-05 1972-03-21 Rca Corp Liquid crystal light valve containing a mixture of nematic and cholesteric materials in which the light scattering effect is reduced when an electric field is applied
US3703331A (en) * 1971-11-26 1972-11-21 Rca Corp Liquid crystal display element having storage
US3836243A (en) * 1972-06-27 1974-09-17 Bell Telephone Labor Inc Liquid crystal display apparatus
DE2542189C3 (de) * 1975-09-22 1978-05-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Flüssigkristallanzeige mit bistabiler cholesterinischer Flüssigkristall-Schicht
US4128313A (en) * 1977-08-18 1978-12-05 General Electric Company Liquid crystal display with dark characters on light background
NL7808899A (nl) * 1978-08-30 1980-03-04 Philips Nv Weergeefinrichting met vloeibaar kristal.

Also Published As

Publication number Publication date
EP0018180A1 (en) 1980-10-29
US4239345A (en) 1980-12-16
KR830002189B1 (ko) 1983-10-18
JPH0151818B2 (es) 1989-11-06
CA1130486A (en) 1982-08-24
ES490587A0 (es) 1981-02-16
EP0018180B1 (en) 1984-08-08
DE3068849D1 (en) 1984-09-13
JPS55142318A (en) 1980-11-06

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20010217