EP0394903A3 - Liquid crystal apparatus - Google Patents

Liquid crystal apparatus Download PDF

Info

Publication number
EP0394903A3
EP0394903A3 EP19900107631 EP90107631A EP0394903A3 EP 0394903 A3 EP0394903 A3 EP 0394903A3 EP 19900107631 EP19900107631 EP 19900107631 EP 90107631 A EP90107631 A EP 90107631A EP 0394903 A3 EP0394903 A3 EP 0394903A3
Authority
EP
European Patent Office
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.)
Granted
Application number
EP19900107631
Other languages
German (de)
French (fr)
Other versions
EP0394903B1 (en
EP0394903A2 (en
Inventor
Osamu C/O Canon Kabushiki Kaisha Taniguchi
Akira C/O Canon Kabushiki Kaisha Tsuboyama
Yutaka C/O Canon Kabushiki Kaisha 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
Publication of EP0394903A2 publication Critical patent/EP0394903A2/en
Publication of EP0394903A3 publication Critical patent/EP0394903A3/en
Application granted granted Critical
Publication of EP0394903B1 publication Critical patent/EP0394903B1/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
    • G09G3/3674—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.
EP90107631A 1989-04-24 1990-04-23 Liquid crystal apparatus Expired - Lifetime EP0394903B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP101733/89 1989-04-24
JP1101733A JP2652886B2 (en) 1989-04-24 1989-04-24 Driving method of liquid crystal device

Publications (3)

Publication Number Publication Date
EP0394903A2 EP0394903A2 (en) 1990-10-31
EP0394903A3 true EP0394903A3 (en) 1991-09-18
EP0394903B1 EP0394903B1 (en) 1995-07-19

Family

ID=14308464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107631A Expired - Lifetime EP0394903B1 (en) 1989-04-24 1990-04-23 Liquid crystal apparatus

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
JP2001506381A (en) * 1997-10-20 2001-05-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Display device
DE102011007493B4 (en) * 2011-04-15 2015-07-02 BMG Gesellschaft für moderne Informationssysteme mbH Liquid crystal display and method for its control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569294A1 (en) * 1984-08-18 1986-02-21 Canon Kk DISPLAY PANEL AND ITS CONTROL METHOD
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
EP0306822A2 (en) * 1987-08-31 1989-03-15 Sharp Kabushiki Kaisha Display system for ferroelectric liquid crystal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2531683B2 (en) * 1987-06-08 1996-09-04 キヤノン株式会社 Liquid crystal device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569294A1 (en) * 1984-08-18 1986-02-21 Canon Kk DISPLAY PANEL AND ITS CONTROL METHOD
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
EP0306822A2 (en) * 1987-08-31 1989-03-15 Sharp Kabushiki Kaisha Display system for ferroelectric liquid crystal

Also Published As

Publication number Publication date
EP0394903B1 (en) 1995-07-19
DE69020942T2 (en) 1995-11-23
ATE125380T1 (en) 1995-08-15
JP2652886B2 (en) 1997-09-10
ES2074493T3 (en) 1995-09-16
DE69020942D1 (en) 1995-08-24
EP0394903A2 (en) 1990-10-31
JPH02281233A (en) 1990-11-16

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