FR2666923B2 - - Google Patents

Info

Publication number
FR2666923B2
FR2666923B2 FR9011548A FR9011548A FR2666923B2 FR 2666923 B2 FR2666923 B2 FR 2666923B2 FR 9011548 A FR9011548 A FR 9011548A FR 9011548 A FR9011548 A FR 9011548A FR 2666923 B2 FR2666923 B2 FR 2666923B2
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 - Lifetime
Application number
FR9011548A
Other languages
French (fr)
Other versions
FR2666923A2 (fr
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
Priority claimed from FR9007847A external-priority patent/FR2663770A1/fr
Application filed filed Critical
Priority to FR9011548A priority Critical patent/FR2666923A2/fr
Priority to EP91912195A priority patent/EP0535127B1/fr
Priority to JP03511377A priority patent/JP3074607B2/ja
Priority to PCT/FR1991/000496 priority patent/WO1992000546A2/fr
Priority to US07/966,026 priority patent/US5357358A/en
Priority to DE69130170T priority patent/DE69130170T2/de
Publication of FR2666923A2 publication Critical patent/FR2666923A2/fr
Application granted granted Critical
Publication of FR2666923B2 publication Critical patent/FR2666923B2/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
    • G02F1/139—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
    • 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
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • 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

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)
  • Liquid Crystal Display Device Control (AREA)
FR9011548A 1990-06-22 1990-09-19 Perfectionnements aux afficheurs a cristal liquide nematique, a bistabilite de surface, commandes par effet flexoelectrique. Granted FR2666923A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9011548A FR2666923A2 (fr) 1990-06-22 1990-09-19 Perfectionnements aux afficheurs a cristal liquide nematique, a bistabilite de surface, commandes par effet flexoelectrique.
EP91912195A EP0535127B1 (fr) 1990-06-22 1991-06-21 Afficheur a cristal liquide nematique, a bistabilite de surface, commande par effet flexoelectrique
JP03511377A JP3074607B2 (ja) 1990-06-22 1991-06-21 液晶光学装置
PCT/FR1991/000496 WO1992000546A2 (fr) 1990-06-22 1991-06-21 Afficheur a cristal liquide nematique, a bistabilite de surface, commande par effet flexoelectrique
US07/966,026 US5357358A (en) 1990-06-22 1991-06-21 Nematic liquid crystal display with surface bistability and control by flexoelectric effect
DE69130170T DE69130170T2 (de) 1990-06-22 1991-06-21 Nematische flüssigkristallanzeige mit oberflächeninduzierter bistabilität und steuerung durch den flexoelektrischen effekt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007847A FR2663770A1 (fr) 1990-06-22 1990-06-22 Afficheur a cristal liquide nematique, a bistabilite de surface, commande par effet flexoelectrique.
FR9011548A FR2666923A2 (fr) 1990-06-22 1990-09-19 Perfectionnements aux afficheurs a cristal liquide nematique, a bistabilite de surface, commandes par effet flexoelectrique.

Publications (2)

Publication Number Publication Date
FR2666923A2 FR2666923A2 (fr) 1992-03-20
FR2666923B2 true FR2666923B2 (US20080094685A1-20080424-C00004.png) 1995-05-05

Family

ID=26228096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9011548A Granted FR2666923A2 (fr) 1990-06-22 1990-09-19 Perfectionnements aux afficheurs a cristal liquide nematique, a bistabilite de surface, commandes par effet flexoelectrique.

Country Status (6)

Country Link
US (1) US5357358A (US20080094685A1-20080424-C00004.png)
EP (1) EP0535127B1 (US20080094685A1-20080424-C00004.png)
JP (1) JP3074607B2 (US20080094685A1-20080424-C00004.png)
DE (1) DE69130170T2 (US20080094685A1-20080424-C00004.png)
FR (1) FR2666923A2 (US20080094685A1-20080424-C00004.png)
WO (1) WO1992000546A2 (US20080094685A1-20080424-C00004.png)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2927662B2 (ja) * 1993-12-24 1999-07-28 シャープ株式会社 液晶表示装置
GB9402513D0 (en) * 1994-02-09 1994-03-30 Secr Defence Bistable nematic liquid crystal device
US6009454A (en) * 1994-09-30 1999-12-28 Allen-Bradley Company, Llc Multi-tasking operation system for industrial controller
GB9521106D0 (en) * 1995-10-16 1995-12-20 Secr Defence Bistable nematic liquid crystal device
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
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
KR100607007B1 (ko) 1997-10-08 2006-08-01 휴렛-팩커드 컴퍼니(델라웨어주법인) 액정 소자 및 그의 제조 방법
US7460200B2 (en) 2000-03-27 2008-12-02 Helwett-Packard Development Company, L.P. Liquid crystal alignment
EP1139151B1 (en) 2000-03-27 2007-05-16 Hewlett-Packard Company, A Delaware Corporation Bistable nematic liquid crystal device
EP1139150A1 (en) 2000-03-27 2001-10-04 Hewlett-Packard Company, A Delaware Corporation Liquid crystal alignment structure
FR2808891B1 (fr) * 2000-05-12 2003-07-25 Nemoptic Dispositif bistable d'affichage en reflexion
FR2808890B1 (fr) * 2000-05-12 2002-08-09 Nemoptic Dispositif bistable d'affichage en reflexion avec contraste inverse
GB0022055D0 (en) 2000-09-07 2000-10-25 Secr Defence Addressing multistable nematic liquid crystal devices
US6853435B2 (en) * 2000-10-23 2005-02-08 Matsushita Electric Industrial Co., Ltd. Liquid crystal display and its manufacturing method
EP1271225A1 (en) 2001-06-22 2003-01-02 Hewlett-Packard Company, A Delaware Corporation Bistable nematic liquid crystal device
GB0209917D0 (en) 2002-04-30 2002-06-05 Hewlett Packard Co Bistable nematic liquid crystal device
GB2394781B (en) * 2002-10-31 2005-11-09 Hewlett Packard Co Bistable nematic liquid crystal display device
GB2412180B (en) * 2004-03-20 2008-07-16 Hewlett Packard Development Co Bistable nematic liquid crystal display device
GB0611141D0 (en) 2006-06-07 2006-07-19 Univ Strathclyde Multistable reflective liquid crystal device
US8327721B2 (en) * 2009-10-26 2012-12-11 Hewlett-Packard Development Company, L.P. Sensor fabric for shape perception

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526177A1 (fr) * 1982-04-28 1983-11-04 Centre Nat Rech Scient Perfectionnements aux cellules optiques utilisant des cristaux liquides
US4701026A (en) * 1984-06-11 1987-10-20 Seiko Epson Kabushiki Kaisha Method and circuits for driving a liquid crystal display device
SE8504760D0 (sv) * 1985-10-14 1985-10-14 Sven Torbjorn Lagerwall Electronic addressing of ferroelectric liquid crystal devices
US4917475A (en) * 1987-03-06 1990-04-17 At&T Bell Laboratories Flexoelectric liquid crystal device
GB2208559B (en) * 1987-08-12 1991-09-04 Gen Electric Co Plc Ferroelectric liquid crystal devices
FR2624985B1 (fr) * 1987-12-17 1992-08-21 Centre Nat Rech Scient Dispositifs optiques a cristaux liquides presentant un gradient controle d'ordre en surface
GB8808812D0 (en) * 1988-04-14 1988-05-18 Emi Plc Thorn Display device
DE68913381T2 (de) * 1988-07-29 1994-06-01 Casio Computer Co Ltd Flüssigkristallvorrichtung.

Also Published As

Publication number Publication date
WO1992000546A2 (fr) 1992-01-09
EP0535127B1 (fr) 1998-09-09
DE69130170D1 (de) 1998-10-15
WO1992000546A3 (fr) 1992-02-06
DE69130170T2 (de) 1999-05-06
JP3074607B2 (ja) 2000-08-07
US5357358A (en) 1994-10-18
JPH06501564A (ja) 1994-02-17
EP0535127A1 (fr) 1993-04-07
FR2666923A2 (fr) 1992-03-20

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Legal Events

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