DE69114985D1 - Ferroelektrische Flüssigkristallvorrichtungen. - Google Patents

Ferroelektrische Flüssigkristallvorrichtungen.

Info

Publication number
DE69114985D1
DE69114985D1 DE69114985T DE69114985T DE69114985D1 DE 69114985 D1 DE69114985 D1 DE 69114985D1 DE 69114985 T DE69114985 T DE 69114985T DE 69114985 T DE69114985 T DE 69114985T DE 69114985 D1 DE69114985 D1 DE 69114985D1
Authority
DE
Germany
Prior art keywords
liquid crystal
ferroelectric liquid
crystal devices
devices
ferroelectric
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 - Fee Related
Application number
DE69114985T
Other languages
English (en)
Other versions
DE69114985T2 (de
Inventor
Stephen Joseph Shelford Lister
Colin Teck Hooi Yeoh
Alan Mosley
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.)
BAE Systems Electronics Ltd
Allard Way Holdings Ltd
Original Assignee
GEC Marconi Ltd
GEC Marconi Holdings Ltd
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 GEC Marconi Ltd, GEC Marconi Holdings Ltd filed Critical GEC Marconi Ltd
Application granted granted Critical
Publication of DE69114985D1 publication Critical patent/DE69114985D1/de
Publication of DE69114985T2 publication Critical patent/DE69114985T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using 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
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/065—Waveforms comprising zero voltage phase or pause
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation

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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
DE69114985T 1990-10-01 1991-09-30 Ferroelektrische Flüssigkristallvorrichtungen. Expired - Fee Related DE69114985T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9021346A GB2249653B (en) 1990-10-01 1990-10-01 Ferroelectric liquid crystal devices

Publications (2)

Publication Number Publication Date
DE69114985D1 true DE69114985D1 (de) 1996-01-11
DE69114985T2 DE69114985T2 (de) 1996-04-18

Family

ID=10683061

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69114985T Expired - Fee Related DE69114985T2 (de) 1990-10-01 1991-09-30 Ferroelektrische Flüssigkristallvorrichtungen.

Country Status (6)

Country Link
US (1) US5260699A (de)
EP (1) EP0479530B1 (de)
JP (1) JPH05249434A (de)
KR (1) KR100233794B1 (de)
DE (1) DE69114985T2 (de)
GB (1) GB2249653B (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW476422U (en) * 1992-01-29 2002-02-11 Sharp Kk Liquid crystal display
JP2808380B2 (ja) * 1992-04-17 1998-10-08 松下電器産業株式会社 空間光変調素子の駆動方法
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
JP3489169B2 (ja) 1993-02-25 2004-01-19 セイコーエプソン株式会社 液晶表示装置の駆動方法
JP3657012B2 (ja) * 1993-03-17 2005-06-08 富士通株式会社 液晶表示装置および該液晶表示装置の駆動方法
EP0632425A1 (de) * 1993-06-29 1995-01-04 Central Research Laboratories Limited Adressierung einer Matrix von bistabiler Pixeln
GB2293906A (en) 1994-10-03 1996-04-10 Sharp Kk Liquid crystal display
KR0145653B1 (ko) * 1994-12-01 1998-09-15 김광호 절전기능을 구비한 액정표시장치 구동회로
US5748277A (en) * 1995-02-17 1998-05-05 Kent State University Dynamic drive method and apparatus for a bistable liquid crystal display
US6154190A (en) * 1995-02-17 2000-11-28 Kent State University Dynamic drive methods and apparatus for a bistable liquid crystal display
EP0772067B1 (de) 1995-05-17 2002-04-24 Seiko Epson Corporation Flüssigkristall-anzeigevorrichtung und verfahren und steuerschaltkreis zu ihrer ansteuerung
JPH0954307A (ja) * 1995-08-18 1997-02-25 Sony Corp 液晶素子の駆動方法
GB2339321B (en) * 1995-11-06 2000-04-12 Sharp Kk Liquid crystal display apparatus
JPH09127483A (ja) * 1995-11-06 1997-05-16 Sharp Corp 液晶表示装置
GB2321754A (en) * 1997-01-31 1998-08-05 Sharp Kk Diffractive spatial light modulator
JPH10268265A (ja) * 1997-03-25 1998-10-09 Sharp Corp 液晶表示装置
US6268840B1 (en) 1997-05-12 2001-07-31 Kent Displays Incorporated Unipolar waveform drive method and apparatus for a bistable liquid crystal display
US6133895A (en) * 1997-06-04 2000-10-17 Kent Displays Incorporated Cumulative drive scheme and method for a liquid crystal display
KR100453186B1 (ko) * 1997-07-02 2005-05-11 삼성에스디아이 주식회사 강유전성액정표시장치및그구동방법
US6204835B1 (en) 1998-05-12 2001-03-20 Kent State University Cumulative two phase drive scheme for bistable cholesteric reflective displays
US6268839B1 (en) 1998-05-12 2001-07-31 Kent State University Drive schemes for gray scale bistable cholesteric reflective displays
US6320563B1 (en) 1999-01-21 2001-11-20 Kent State University Dual frequency cholesteric display and drive scheme
JP3918399B2 (ja) * 2000-04-28 2007-05-23 富士通株式会社 液晶素子
US7023409B2 (en) 2001-02-09 2006-04-04 Kent Displays, Incorporated Drive schemes for gray scale bistable cholesteric reflective displays utilizing variable frequency pulses
KR100685921B1 (ko) * 2001-10-13 2007-02-23 엘지.필립스 엘시디 주식회사 강유전성 액정표시소자의 구동방법
JP3982249B2 (ja) * 2001-12-11 2007-09-26 株式会社日立製作所 表示装置
KR100537609B1 (ko) * 2001-12-27 2005-12-19 삼성에스디아이 주식회사 정확한 계조 표시를 위한 콜레스테릭 액정 표시 패널의구동 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173336B (en) * 1985-04-03 1988-04-27 Stc Plc Addressing liquid crystal cells
GB2173629B (en) * 1986-04-01 1989-11-15 Stc Plc Addressing liquid crystal cells
JPS63116128A (ja) * 1986-11-04 1988-05-20 Canon Inc 光学変調装置
GB2208559B (en) * 1987-08-12 1991-09-04 Gen Electric Co Plc Ferroelectric liquid crystal devices
GB8720856D0 (en) * 1987-09-04 1987-10-14 Emi Plc Thorn Matrix addressing
NL8703040A (nl) * 1987-12-16 1989-07-17 Philips Nv Werkwijze voor het besturen van een passieve ferro-elektrisch vloeibaar kristal weergeefinrichting.
GB8808812D0 (en) * 1988-04-14 1988-05-18 Emi Plc Thorn Display device

Also Published As

Publication number Publication date
GB2249653A (en) 1992-05-13
EP0479530B1 (de) 1995-11-29
DE69114985T2 (de) 1996-04-18
GB2249653B (en) 1994-09-07
US5260699A (en) 1993-11-09
EP0479530A2 (de) 1992-04-08
KR920008661A (ko) 1992-05-28
KR100233794B1 (ko) 1999-12-01
GB9021346D0 (en) 1990-11-14
JPH05249434A (ja) 1993-09-28
EP0479530A3 (en) 1993-03-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE REICHEL UND REICHEL, 60322 FRANKFURT

8339 Ceased/non-payment of the annual fee