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GB2208740B - Ferroelectric liquid crystal devices - Google Patents

Ferroelectric liquid crystal devices

Info

Publication number
GB2208740B
GB2208740B GB8719080A GB8719080A GB2208740B GB 2208740 B GB2208740 B GB 2208740B GB 8719080 A GB8719080 A GB 8719080A GB 8719080 A GB8719080 A GB 8719080A GB 2208740 B GB2208740 B GB 2208740B
Authority
GB
United Kingdom
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 - Lifetime
Application number
GB8719080A
Other versions
GB8719080D0 (en
GB2208740A (en
Inventor
Carolyn Bowry
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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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 General Electric Company PLC filed Critical General Electric Company PLC
Priority to GB8719080A priority Critical patent/GB2208740B/en
Publication of GB8719080D0 publication Critical patent/GB8719080D0/en
Priority to PCT/GB1988/000670 priority patent/WO1989001681A1/en
Publication of GB2208740A publication Critical patent/GB2208740A/en
Application granted granted Critical
Publication of GB2208740B publication Critical patent/GB2208740B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0204—Compensation of DC component across the pixels 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

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)
GB8719080A 1987-08-12 1987-08-12 Ferroelectric liquid crystal devices Expired - Lifetime GB2208740B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8719080A GB2208740B (en) 1987-08-12 1987-08-12 Ferroelectric liquid crystal devices
PCT/GB1988/000670 WO1989001681A1 (en) 1987-08-12 1988-08-12 Ferroelectric liquid crystal devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8719080A GB2208740B (en) 1987-08-12 1987-08-12 Ferroelectric liquid crystal devices

Publications (3)

Publication Number Publication Date
GB8719080D0 GB8719080D0 (en) 1987-09-16
GB2208740A GB2208740A (en) 1989-04-12
GB2208740B true GB2208740B (en) 1991-09-04

Family

ID=10622193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8719080A Expired - Lifetime GB2208740B (en) 1987-08-12 1987-08-12 Ferroelectric liquid crystal devices

Country Status (2)

Country Link
GB (1) GB2208740B (en)
WO (1) WO1989001681A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0561135A2 (en) * 1992-02-08 1993-09-22 Hoechst Aktiengesellschaft Method of driving bistable displays, in particular ferroelectric liquid crystal displays
GB2293906A (en) * 1994-10-03 1996-04-10 Sharp Kk Liquid crystal display
JPH09325319A (en) * 1996-06-07 1997-12-16 Sharp Corp Simple matrix type liquid crystal display device and its driving circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4709995A (en) * 1984-08-18 1987-12-01 Canon Kabushiki Kaisha Ferroelectric display panel and driving method therefor to achieve gray scale
GB2173337B (en) * 1985-04-03 1989-01-11 Stc Plc Addressing liquid crystal cells
US4770502A (en) * 1986-01-10 1988-09-13 Hitachi, Ltd. Ferroelectric liquid crystal matrix driving apparatus and method

Also Published As

Publication number Publication date
GB8719080D0 (en) 1987-09-16
GB2208740A (en) 1989-04-12
WO1989001681A1 (en) 1989-02-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940812