DE69020942D1 - Liquid crystal display. - Google Patents

Liquid crystal display.

Info

Publication number
DE69020942D1
DE69020942D1 DE69020942T DE69020942T DE69020942D1 DE 69020942 D1 DE69020942 D1 DE 69020942D1 DE 69020942 T DE69020942 T DE 69020942T DE 69020942 T DE69020942 T DE 69020942T DE 69020942 D1 DE69020942 D1 DE 69020942D1
Authority
DE
Germany
Prior art keywords
scanning
liquid crystal
lines
pulse
data
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
DE69020942T
Other languages
German (de)
Other versions
DE69020942T2 (en
Inventor
Osamu C O Canon Kabu Taniguchi
Akira C O Canon Kabu Tsuboyama
Yutaka C O Canon Kabushi Inaba
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69020942D1 publication Critical patent/DE69020942D1/en
Publication of DE69020942T2 publication Critical patent/DE69020942T2/en
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
    • G09G3/3674—Details of drivers for scan electrodes
    • 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
    • G09G2310/04—Partial updating of the display screen
    • 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)
  • Liquid Crystal Substances (AREA)

Abstract

A liquid crystal apparatus includes: a ferroelectric liquid crystal device comprising an electrode matrix including a plurality of scanning lines and a plurality of data lines intersecting with the scanning lines, and a ferroelectric liquid crystal disposed between the scanning lines and data lines, and drive means for sequentially applying a scanning signal to the scanning lines for selecting a particular scanning line, and for applying data signals for the pixels on the selected scanning line to the data lines; wherein each of the data signals has a plurality of pulses including a pulse in a controlled phase and a pulse in an auxiliary phase, and the scanning signal for the selected scanning line has a compensation pulse for compensating the pulse in the auxiliary phase of a data signal for a pixel on the selected scanning line.
DE69020942T 1989-04-24 1990-04-23 Liquid crystal display. Expired - Fee Related DE69020942T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1101733A JP2652886B2 (en) 1989-04-24 1989-04-24 Driving method of liquid crystal device

Publications (2)

Publication Number Publication Date
DE69020942D1 true DE69020942D1 (en) 1995-08-24
DE69020942T2 DE69020942T2 (en) 1995-11-23

Family

ID=14308464

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69020942T Expired - Fee Related DE69020942T2 (en) 1989-04-24 1990-04-23 Liquid crystal display.

Country Status (5)

Country Link
EP (1) EP0394903B1 (en)
JP (1) JP2652886B2 (en)
AT (1) ATE125380T1 (en)
DE (1) DE69020942T2 (en)
ES (1) ES2074493T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6271817B1 (en) 1991-03-20 2001-08-07 Seiko Epson Corporation Method of driving liquid crystal display device that reduces afterimages
JP3227197B2 (en) * 1991-06-18 2001-11-12 キヤノン株式会社 Display device
GB2271011A (en) * 1992-09-23 1994-03-30 Central Research Lab Ltd Greyscale addressing of ferroelectric liquid crystal displays.
KR0147590B1 (en) * 1994-06-03 1998-12-01 윤종용 Matrix type lcd drive apparatus and method
DE69524013T2 (en) * 1994-09-12 2002-06-06 Canon Kk Control for a ferroelectrical liquid crystal device
JP3286503B2 (en) * 1994-09-28 2002-05-27 キヤノン株式会社 Driving method of liquid crystal element and liquid crystal device using the driving method
US6018330A (en) * 1995-04-28 2000-01-25 Canon Kabushiki Kaisha Liquid crystal display apparatus
US6061044A (en) * 1995-05-30 2000-05-09 Canon Kabushiki Kaisha Liquid-crystal display apparatus
US5734365A (en) * 1996-01-25 1998-03-31 Canon Kabushiki Kaisha Liquid crystal display apparatus
US5903251A (en) * 1996-01-29 1999-05-11 Canon Kabushiki Kaisha Liquid crystal apparatus that changes a voltage level of a correction pulse based on a detected temperature
WO1999021161A2 (en) * 1997-10-20 1999-04-29 Koninklijke Philips Electronics N.V. Display device
DE102011007493B4 (en) * 2011-04-15 2015-07-02 BMG Gesellschaft für moderne Informationssysteme mbH Liquid crystal display and method for its control

Family Cites Families (4)

* 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
JP2505756B2 (en) * 1986-07-22 1996-06-12 キヤノン株式会社 Driving method of optical modulator
JP2531683B2 (en) * 1987-06-08 1996-09-04 キヤノン株式会社 Liquid crystal device
JP2768421B2 (en) * 1987-08-31 1998-06-25 シャープ株式会社 Display method of ferroelectric liquid crystal display device

Also Published As

Publication number Publication date
DE69020942T2 (en) 1995-11-23
JPH02281233A (en) 1990-11-16
EP0394903A2 (en) 1990-10-31
JP2652886B2 (en) 1997-09-10
ES2074493T3 (en) 1995-09-16
EP0394903B1 (en) 1995-07-19
ATE125380T1 (en) 1995-08-15
EP0394903A3 (en) 1991-09-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee