EP0544427A3 - Display module drive circuit having a digital source driver capable of generating multi-level drive voltages from a single external power source - Google Patents

Display module drive circuit having a digital source driver capable of generating multi-level drive voltages from a single external power source Download PDF

Info

Publication number
EP0544427A3
EP0544427A3 EP19920310381 EP92310381A EP0544427A3 EP 0544427 A3 EP0544427 A3 EP 0544427A3 EP 19920310381 EP19920310381 EP 19920310381 EP 92310381 A EP92310381 A EP 92310381A EP 0544427 A3 EP0544427 A3 EP 0544427A3
Authority
EP
European Patent Office
Prior art keywords
display module
external power
power source
single external
drive circuit
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
EP19920310381
Other versions
EP0544427A2 (en
EP0544427B1 (en
Inventor
Kaoru Nakanishi
Kouichirou Seihara
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Publication of EP0544427A2 publication Critical patent/EP0544427A2/en
Publication of EP0544427A3 publication Critical patent/EP0544427A3/en
Application granted granted Critical
Publication of EP0544427B1 publication Critical patent/EP0544427B1/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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • 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
    • 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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • 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
    • G09G2310/066—Waveforms comprising a gently increasing or decreasing portion, e.g. ramp
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP92310381A 1991-11-27 1992-11-13 Display module drive circuit having a digital source driver capable of generating multi-level drive voltages from a single external power source Expired - Lifetime EP0544427B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP312319/91 1991-11-27
JP3312319A JPH05150737A (en) 1991-11-27 1991-11-27 Driving circuit for display device

Publications (3)

Publication Number Publication Date
EP0544427A2 EP0544427A2 (en) 1993-06-02
EP0544427A3 true EP0544427A3 (en) 1993-07-21
EP0544427B1 EP0544427B1 (en) 1997-01-15

Family

ID=18027814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92310381A Expired - Lifetime EP0544427B1 (en) 1991-11-27 1992-11-13 Display module drive circuit having a digital source driver capable of generating multi-level drive voltages from a single external power source

Country Status (4)

Country Link
EP (1) EP0544427B1 (en)
JP (1) JPH05150737A (en)
KR (1) KR960016342B1 (en)
DE (1) DE69216785T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139892B2 (en) * 1993-09-13 2001-03-05 株式会社東芝 Data selection circuit
EP1041535A1 (en) * 1999-03-30 2000-10-04 EM Microelectronic-Marin SA Display controller for liquid crystal display with at least one colour level
JP3925467B2 (en) * 2003-06-20 2007-06-06 セイコーエプソン株式会社 Electro-optical device, driving method thereof, and electronic apparatus
CN102842278B (en) * 2012-08-06 2015-09-02 北京大学深圳研究生院 Gate drive circuit unit, gate driver circuit and display
CN115128573B (en) * 2022-08-30 2022-12-06 北京摩尔芯光半导体技术有限公司 Drive circuit and drive method for optical phased array and laser radar device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298255A1 (en) * 1987-06-04 1989-01-11 Seiko Epson Corporation Circuit for driving a liquid crystal display panel
EP0347720A2 (en) * 1988-06-18 1989-12-27 Hitachi, Ltd. Apparatus and method for gray scale display
US4998099A (en) * 1984-07-13 1991-03-05 Ascii Corporation Display control system
EP0417578A2 (en) * 1989-09-11 1991-03-20 Deutsche Thomson-Brandt Gmbh Circuit for driving a liquid crystal display

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2779494B2 (en) * 1986-07-07 1998-07-23 セイコーエプソン株式会社 Drive circuit and liquid crystal display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998099A (en) * 1984-07-13 1991-03-05 Ascii Corporation Display control system
EP0298255A1 (en) * 1987-06-04 1989-01-11 Seiko Epson Corporation Circuit for driving a liquid crystal display panel
EP0347720A2 (en) * 1988-06-18 1989-12-27 Hitachi, Ltd. Apparatus and method for gray scale display
EP0417578A2 (en) * 1989-09-11 1991-03-20 Deutsche Thomson-Brandt Gmbh Circuit for driving a liquid crystal display

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 216 (P-719)21 June 1988 & JP-A-63 014 129 ( SEIKO EPSON CO. ) 21 January 1988 *

Also Published As

Publication number Publication date
EP0544427A2 (en) 1993-06-02
JPH05150737A (en) 1993-06-18
DE69216785D1 (en) 1997-02-27
KR960016342B1 (en) 1996-12-09
DE69216785T2 (en) 1997-07-24
EP0544427B1 (en) 1997-01-15
KR930010837A (en) 1993-06-23

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