FR2637408A1 - Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale - Google Patents

Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale

Info

Publication number
FR2637408A1
FR2637408A1 FR8812811A FR8812811A FR2637408A1 FR 2637408 A1 FR2637408 A1 FR 2637408A1 FR 8812811 A FR8812811 A FR 8812811A FR 8812811 A FR8812811 A FR 8812811A FR 2637408 A1 FR2637408 A1 FR 2637408A1
Authority
FR
France
Prior art keywords
addressing
display screen
liquid crystal
crystal display
ferroelectric liquid
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.)
Withdrawn
Application number
FR8812811A
Other languages
English (en)
Inventor
Jean Dijon
Thierry Leroux
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR8812811A priority Critical patent/FR2637408A1/fr
Priority to EP89402673A priority patent/EP0362071A1/fr
Priority to JP25691289A priority patent/JPH02148018A/ja
Publication of FR2637408A1 publication Critical patent/FR2637408A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0205—Simultaneous scanning of several lines in flat panels
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

Procédé d'adressage d'un écran d'affichage à cristaux liquides ferroélectriques à phase smectique chirale comportant une cellule enfermant le cristal, munie sur ses parois de deux systèmes matriciels de conducteurs lignes et de conducteurs colonnes, caractérisé en ce que les signaux de ligne VLi ont, une amplitude VL et une durée suffisantes pour que le seuil de commutation VT seuil de l'état blanc ou de l'état noir soit dépassé pour chaque pixel avant l'arrivée de la partie active de l'impulsion d'écriture VC.
FR8812811A 1988-09-30 1988-09-30 Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale Withdrawn FR2637408A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8812811A FR2637408A1 (fr) 1988-09-30 1988-09-30 Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale
EP89402673A EP0362071A1 (fr) 1988-09-30 1989-09-28 Procédé d'adressage d'un écran d'affichage à cristaux liquides ferroélectriques à phase smectique chirale
JP25691289A JPH02148018A (ja) 1988-09-30 1989-09-29 キラルスメクチック相強誘電性液晶ディスプレイスクリーンのアドレス指定法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8812811A FR2637408A1 (fr) 1988-09-30 1988-09-30 Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale

Publications (1)

Publication Number Publication Date
FR2637408A1 true FR2637408A1 (fr) 1990-04-06

Family

ID=9370573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8812811A Withdrawn FR2637408A1 (fr) 1988-09-30 1988-09-30 Procede d'adressage d'un ecran d'affichage a cristaux liquides ferroelectriques a phase smectique chirale

Country Status (3)

Country Link
EP (1) EP0362071A1 (fr)
JP (1) JPH02148018A (fr)
FR (1) FR2637408A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632425A1 (fr) * 1993-06-29 1995-01-04 Central Research Laboratories Limited Adressage d'une matrice de pixels bistables
JPH08163472A (ja) * 1994-10-05 1996-06-21 Nippondenso Co Ltd マトリクス型液晶表示装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235143A1 (de) * 1982-09-23 1984-03-29 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Verfahren zur ansteuerung einer multiplexierbaren, bistabilen fluessigkristallanzeige
EP0176763A1 (fr) * 1984-09-05 1986-04-09 Hitachi, Ltd. Dispositif d'affichage à cristal liquide et procédé pour son attaque
EP0214857A2 (fr) * 1985-09-06 1987-03-18 Matsushita Electric Industrial Co., Ltd. Procédé d'attaque d'un panneau matriciel à cristaux liquides
US4765720A (en) * 1986-07-22 1988-08-23 Canon Kabushiki Kaisha Method and apparatus for driving ferroelectric liquid crystal, optical modulation device to achieve gradation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235143A1 (de) * 1982-09-23 1984-03-29 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Verfahren zur ansteuerung einer multiplexierbaren, bistabilen fluessigkristallanzeige
EP0176763A1 (fr) * 1984-09-05 1986-04-09 Hitachi, Ltd. Dispositif d'affichage à cristal liquide et procédé pour son attaque
EP0214857A2 (fr) * 1985-09-06 1987-03-18 Matsushita Electric Industrial Co., Ltd. Procédé d'attaque d'un panneau matriciel à cristaux liquides
US4765720A (en) * 1986-07-22 1988-08-23 Canon Kabushiki Kaisha Method and apparatus for driving ferroelectric liquid crystal, optical modulation device to achieve gradation

Also Published As

Publication number Publication date
JPH02148018A (ja) 1990-06-06
EP0362071A1 (fr) 1990-04-04

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Legal Events

Date Code Title Description
ST Notification of lapse