ES8103395A1 - Perfeccionamientos en celulas de cristal liquido - Google Patents
Perfeccionamientos en celulas de cristal liquidoInfo
- 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
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
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)
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)
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. |
-
1979
- 1979-04-16 US US06/030,172 patent/US4239345A/en not_active Expired - Lifetime
-
1980
- 1980-03-31 CA CA348,846A patent/CA1130486A/en not_active Expired
- 1980-04-11 DE DE8080301168T patent/DE3068849D1/de not_active Expired
- 1980-04-11 EP EP80301168A patent/EP0018180B1/en not_active Expired
- 1980-04-15 JP JP4880580A patent/JPS55142318A/ja active Granted
- 1980-04-15 ES ES490587A patent/ES8103395A1/es not_active Expired
- 1980-04-16 KR KR1019800001576A patent/KR830002189B1/ko active
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 |