GB2247974B - Co-ordinate addressing of liquid crystal cells - Google Patents

Co-ordinate addressing of liquid crystal cells

Info

Publication number
GB2247974B
GB2247974B GB9019883A GB9019883A GB2247974B GB 2247974 B GB2247974 B GB 2247974B GB 9019883 A GB9019883 A GB 9019883A GB 9019883 A GB9019883 A GB 9019883A GB 2247974 B GB2247974 B GB 2247974B
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
crystal cells
ordinate
addressing
ordinate addressing
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
GB9019883A
Other versions
GB2247974A (en
GB9019883D0 (en
Inventor
William Alden Crossland
Martin John Birch
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.)
Nortel Networks Ltd
STC PLC
Alcatel Submarine Networks UK Ltd
Nortel Networks Optical Components Ltd
Original Assignee
Northern Telecom Ltd
STC PLC
Northern Telecom Europe Ltd
STC Submarine Systems Ltd
STC 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 Northern Telecom Ltd, STC PLC, Northern Telecom Europe Ltd, STC Submarine Systems Ltd, STC Ltd filed Critical Northern Telecom Ltd
Priority to GB9019883A priority Critical patent/GB2247974B/en
Publication of GB9019883D0 publication Critical patent/GB9019883D0/en
Priority to JP03515534A priority patent/JP3105248B2/en
Priority to EP91916345A priority patent/EP0548179B1/en
Priority to PCT/GB1991/001536 priority patent/WO1992004709A1/en
Priority to DE69116694T priority patent/DE69116694T2/en
Publication of GB2247974A publication Critical patent/GB2247974A/en
Application granted granted Critical
Publication of GB2247974B publication Critical patent/GB2247974B/en
Priority to US08/739,811 priority patent/US5774104A/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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3651—Control of matrices with row and column drivers using an active matrix using multistable liquid crystals, 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
    • 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

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 (AREA)
  • Liquid Crystal Display Device Control (AREA)
GB9019883A 1990-09-11 1990-09-11 Co-ordinate addressing of liquid crystal cells Expired - Lifetime GB2247974B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9019883A GB2247974B (en) 1990-09-11 1990-09-11 Co-ordinate addressing of liquid crystal cells
DE69116694T DE69116694T2 (en) 1990-09-11 1991-09-10 ADDRESSING A LIQUID CRYSTAL DISPLAY MATRIX
EP91916345A EP0548179B1 (en) 1990-09-11 1991-09-10 Co-ordinate addressing of liquid crystal cells
PCT/GB1991/001536 WO1992004709A1 (en) 1990-09-11 1991-09-10 Co-ordinate addressing of liquid crystal cells
JP03515534A JP3105248B2 (en) 1990-09-11 1991-09-10 Liquid crystal cell coordinate address
US08/739,811 US5774104A (en) 1990-09-11 1996-10-30 Co-ordinate addressing of liquid crystal cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9019883A GB2247974B (en) 1990-09-11 1990-09-11 Co-ordinate addressing of liquid crystal cells

Publications (3)

Publication Number Publication Date
GB9019883D0 GB9019883D0 (en) 1990-10-24
GB2247974A GB2247974A (en) 1992-03-18
GB2247974B true GB2247974B (en) 1994-07-27

Family

ID=10682048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9019883A Expired - Lifetime GB2247974B (en) 1990-09-11 1990-09-11 Co-ordinate addressing of liquid crystal cells

Country Status (5)

Country Link
EP (1) EP0548179B1 (en)
JP (1) JP3105248B2 (en)
DE (1) DE69116694T2 (en)
GB (1) GB2247974B (en)
WO (1) WO1992004709A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247972B (en) * 1990-09-11 1994-07-27 Stc Plc Co-ordinate addressing of liquid crystal cells
GB9719019D0 (en) 1997-09-08 1997-11-12 Central Research Lab Ltd An optical modulator and integrated circuit therefor
GB9827945D0 (en) * 1998-12-19 1999-02-10 Secr Defence Method of driving a spatial light modulator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173336A (en) * 1985-04-03 1986-10-08 Stc Plc Addressing liquid crystal cells
GB2173629A (en) * 1986-04-01 1986-10-15 Stc Plc Addressing liquid crystal cells

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900005489B1 (en) * 1984-04-26 1990-07-30 마쯔시다덴기산교 가부시기가이샤 The driving circuit of lcd devices
JP2534334B2 (en) * 1988-11-18 1996-09-11 シャープ株式会社 Display device
US5041823A (en) * 1988-12-29 1991-08-20 Honeywell Inc. Flicker-free liquid crystal display driver system
GB2247972B (en) * 1990-09-11 1994-07-27 Stc Plc Co-ordinate addressing of liquid crystal cells

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173336A (en) * 1985-04-03 1986-10-08 Stc Plc Addressing liquid crystal cells
GB2173629A (en) * 1986-04-01 1986-10-15 Stc Plc Addressing liquid crystal cells

Also Published As

Publication number Publication date
EP0548179A1 (en) 1993-06-30
JPH06501568A (en) 1994-02-17
JP3105248B2 (en) 2000-10-30
DE69116694T2 (en) 1996-05-30
DE69116694D1 (en) 1996-03-07
EP0548179B1 (en) 1996-01-24
GB2247974A (en) 1992-03-18
WO1992004709A1 (en) 1992-03-19
GB9019883D0 (en) 1990-10-24

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20100910