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 chiraleInfo
- 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- Withdrawn
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.
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)
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)
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 |
-
1988
- 1988-09-30 FR FR8812811A patent/FR2637408A1/fr not_active Withdrawn
-
1989
- 1989-09-28 EP EP89402673A patent/EP0362071A1/fr not_active Withdrawn
- 1989-09-29 JP JP25691289A patent/JPH02148018A/ja active Pending
Patent Citations (4)
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 |
---|---|
EP0362071A1 (fr) | 1990-04-04 |
JPH02148018A (ja) | 1990-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |