FR2416519B1 - - Google Patents

Info

Publication number
FR2416519B1
FR2416519B1 FR7902633A FR7902633A FR2416519B1 FR 2416519 B1 FR2416519 B1 FR 2416519B1 FR 7902633 A FR7902633 A FR 7902633A FR 7902633 A FR7902633 A FR 7902633A FR 2416519 B1 FR2416519 B1 FR 2416519B1
Authority
FR
France
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
FR7902633A
Other versions
FR2416519A1 (fr
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.)
Ebauches SA
Original Assignee
Ebauches SA
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 Ebauches SA filed Critical Ebauches SA
Publication of FR2416519A1 publication Critical patent/FR2416519A1/fr
Application granted granted Critical
Publication of FR2416519B1 publication Critical patent/FR2416519B1/fr
Granted 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
    • G02F1/13725—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 guest-host interaction
    • 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
    • G02F1/1393—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 birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC 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
FR7902633A 1978-02-06 1979-02-01 Cellule d'affichage electro-optique passif Granted FR2416519A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH127278A CH629001A5 (fr) 1978-02-06 1978-02-06 Cellule d'affichage electro-optique passif.

Publications (2)

Publication Number Publication Date
FR2416519A1 FR2416519A1 (fr) 1979-08-31
FR2416519B1 true FR2416519B1 (fr) 1984-12-07

Family

ID=4206522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902633A Granted FR2416519A1 (fr) 1978-02-06 1979-02-01 Cellule d'affichage electro-optique passif

Country Status (6)

Country Link
US (1) US4281903A (fr)
CH (1) CH629001A5 (fr)
DE (1) DE2826440C2 (fr)
FR (1) FR2416519A1 (fr)
GB (1) GB2017327B (fr)
HK (1) HK8483A (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH621200A5 (fr) * 1978-03-22 1981-01-15 Ebauches Sa
CH636208A5 (de) * 1978-07-13 1983-05-13 Bbc Brown Boveri & Cie Fluessigkristallanzeige.
JPS56156817A (en) * 1980-05-09 1981-12-03 Hitachi Ltd Liquid-crystal display element
US4394070A (en) * 1980-07-16 1983-07-19 Minnesota Mining And Manufacturing Company Helichromic compounds and displays
DE3140078A1 (de) * 1980-10-08 1982-04-22 Kabushiki Kaisha Suwa Seikosha, Tokyo Optische fluessigkristalleinrichtung und drucker, der eine solche optische einrichtung als lichtventil benutzt
JPS57195219A (en) * 1981-05-25 1982-11-30 Matsushita Electric Ind Co Ltd Liquid crystal color display panel
US4514045A (en) * 1981-06-22 1985-04-30 Minnesota Mining And Manufacturing Company Helichromic-smectic liquid crystal compositions and display cells
JPS5871979A (ja) * 1981-10-26 1983-04-28 Alps Electric Co Ltd 液晶混合物
GB2122794B (en) * 1982-06-15 1985-09-18 Standard Telephones Cables Ltd Liquid crystal display
EP0098070B2 (fr) * 1982-06-29 2000-12-13 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Dispositifs à cristal liquide
US4596446B2 (en) * 1982-06-29 1997-03-18 Secr Defence Brit Liquid crystal devices with particular cholestric pitch-cell thickness ratio
GB2129954B (en) * 1982-10-22 1986-03-05 Stc Plc Liquid crystal display device
CH650350A5 (fr) * 1982-11-23 1985-07-15 Asulab Sa Cellule d'affichage a cristaux liquides.
IN161652B (fr) * 1983-07-12 1988-01-09 Bbc Brown Boveri & Cie
JPS6050511A (ja) * 1983-08-31 1985-03-20 Hitachi Ltd 液晶表示素子
CH661361A5 (en) * 1983-12-16 1987-07-15 Bbc Brown Boveri & Cie Multiplexable liquid-crystal display
IT1190508B (it) * 1986-03-24 1988-02-16 Daniele Senatore Occhiali a trasparenza regolabile
FR2627864A1 (fr) * 1988-02-29 1989-09-01 Asulab Sa Dispositif d'affichage pour instrument de mesure
JPH03122615A (ja) * 1989-10-06 1991-05-24 Toshiba Corp 液晶表示装置
JPH0812360B2 (ja) * 1989-12-21 1996-02-07 スタンレー電気株式会社 液晶表示装置およびその駆動方法
US5608567A (en) * 1991-11-05 1997-03-04 Asulab S.A. Variable transparency electro-optical device
FR2685102B1 (fr) * 1991-12-17 1994-04-15 Asulab Sa Dispositif electro-optique a transparence variable.
SG65551A1 (en) * 1991-11-05 1999-06-22 Asulab Sa Variable transparency electro-optical device
US5686790A (en) * 1993-06-22 1997-11-11 Candescent Technologies Corporation Flat panel device with ceramic backplate
US5570216A (en) * 1995-04-14 1996-10-29 Kent Display Systems, Inc. Bistable cholesteric liquid crystal displays with very high contrast and excellent mechanical stability
JP3465776B2 (ja) * 1996-10-04 2003-11-10 シャープ株式会社 液晶表示装置
US6239778B1 (en) * 1998-06-24 2001-05-29 Alphamicron, Inc. Variable light attentuating dichroic dye guest-host device
CN103210345B (zh) 2010-10-04 2015-11-11 阿尔法米克罗恩公司 宽光带的透光度可变的光学器件及混合物
US9513524B2 (en) 2010-10-04 2016-12-06 Alphamicron Incorporated Wide band variable transmittance optical device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310733A1 (de) * 1973-03-03 1974-09-12 Merck Patent Gmbh Verfahren zur elektrooptischen lichtmodulation und farbwiedergabevorrichtung
FR2220804B1 (fr) * 1973-03-08 1976-10-08 Western Electric Co
DE2658568C2 (de) * 1975-12-25 1983-12-22 Sharp K.K., Osaka Flüssigkristall-Darstellungseinrichtung mit einem pleochroitischen Farbstoff-Gastmaterial und einem nematischen Flüssigkristall-Wirtmaterial
FR2356173A1 (fr) * 1976-06-21 1978-01-20 Gen Electric Procede pour ameliorer le temps de descente d'un dispositif d'affichage a composition de cristaux liquides nematique en helice

Also Published As

Publication number Publication date
FR2416519A1 (fr) 1979-08-31
DE2826440C2 (de) 1992-08-27
US4281903A (en) 1981-08-04
CH629001A5 (fr) 1982-03-31
HK8483A (en) 1983-03-03
GB2017327A (en) 1979-10-03
DE2826440A1 (de) 1979-08-09
GB2017327B (en) 1982-07-21

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Legal Events

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