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WO2008146799A1 - Driving circuit, display device and television system - Google Patents

Driving circuit, display device and television system Download PDF

Info

Publication number
WO2008146799A1
WO2008146799A1 PCT/JP2008/059679 JP2008059679W WO2008146799A1 WO 2008146799 A1 WO2008146799 A1 WO 2008146799A1 JP 2008059679 W JP2008059679 W JP 2008059679W WO 2008146799 A1 WO2008146799 A1 WO 2008146799A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
output
dac
output terminal
dac circuit
Prior art date
Application number
PCT/JP2008/059679
Other languages
French (fr)
Japanese (ja)
Inventor
Shunichi Murahashi
Masafumi Katsutani
Hiroaki Fujino
Shinsuke Anzai
Original Assignee
Sharp Kabushiki Kaisha
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
Priority claimed from JP2008130848A external-priority patent/JP4277055B2/en
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Priority to US12/225,182 priority Critical patent/US8416171B2/en
Priority to KR1020097026808A priority patent/KR101200734B1/en
Priority to CN2008800179156A priority patent/CN101681604B/en
Publication of WO2008146799A1 publication Critical patent/WO2008146799A1/en

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
    • G09G3/3685—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
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

A semiconductor integrated circuit (10) for driving liquid crystal is provided with an output terminal connected to a display panel; an output circuit block including a DAC circuit (8) which can be connected to the output terminal; and an auxiliary output circuit block including a DAC circuit (28) which can be connected to the output terminal. The semiconductor integrated circuit is also provided with an operation amplifier (1) which compares an output signal outputted from the DAC circuit (8) with an output signal outputted from the DAC circuit (28); a judging circuit (3) which judges whether the DAC circuit (8) is failure or not, based on the comparison results obtained from the operation amplifier (1); and switches (2c, 2d), which connect the DAC circuit (28) as a substitute for the DAC circuit (8), to the output terminal, in the case where the judgment result obtained from the judgment circuit (3) indicated failure of the output circuit. Thus, the integrated circuit for driving the display device is provided with the specific means for easily detecting defects of the output circuit, and is permitted to self-repair a defect in the case where the defect is detected in the output circuit.
PCT/JP2008/059679 2007-05-29 2008-05-26 Driving circuit, display device and television system WO2008146799A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/225,182 US8416171B2 (en) 2007-05-29 2008-05-26 Display device and television system including a self-healing driving circuit
KR1020097026808A KR101200734B1 (en) 2007-05-29 2008-05-26 Driving circuit, display device and television system
CN2008800179156A CN101681604B (en) 2007-05-29 2008-05-26 Driving circuit, display device and television system

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007-142625 2007-05-29
JP2007142625 2007-05-29
JP2007-260378 2007-10-03
JP2007260378 2007-10-03
JP2008130848A JP4277055B2 (en) 2007-05-29 2008-05-19 Drive circuit, display device, and television system
JP2008-130848 2008-05-19

Publications (1)

Publication Number Publication Date
WO2008146799A1 true WO2008146799A1 (en) 2008-12-04

Family

ID=40075039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059679 WO2008146799A1 (en) 2007-05-29 2008-05-26 Driving circuit, display device and television system

Country Status (1)

Country Link
WO (1) WO2008146799A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010116426A1 (en) * 2009-04-09 2010-10-14 パナソニック株式会社 Display drive device and display device
CN101995527A (en) * 2009-08-06 2011-03-30 横河电机株式会社 Measurement apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06208346A (en) * 1992-09-18 1994-07-26 Philips Electron Nv Electronic drive circuit for active-matrix device
JP2002023712A (en) * 2000-07-12 2002-01-25 Fujitsu Ltd Display device and driving method thereof
JP2002072979A (en) * 2000-08-31 2002-03-12 Fujitsu Ltd Liquid crystal drive circuit and liquid crystal display device using the same
JP2004511022A (en) * 1999-11-23 2004-04-08 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 Self-diagnosis and repair on matrix display panels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06208346A (en) * 1992-09-18 1994-07-26 Philips Electron Nv Electronic drive circuit for active-matrix device
JP2004511022A (en) * 1999-11-23 2004-04-08 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 Self-diagnosis and repair on matrix display panels
JP2002023712A (en) * 2000-07-12 2002-01-25 Fujitsu Ltd Display device and driving method thereof
JP2002072979A (en) * 2000-08-31 2002-03-12 Fujitsu Ltd Liquid crystal drive circuit and liquid crystal display device using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010116426A1 (en) * 2009-04-09 2010-10-14 パナソニック株式会社 Display drive device and display device
CN101995527A (en) * 2009-08-06 2011-03-30 横河电机株式会社 Measurement apparatus
EP2282175A3 (en) * 2009-08-06 2011-10-19 Yokogawa Electric Corporation Measurement apparatus
US8698505B2 (en) 2009-08-06 2014-04-15 Yokogawa Electric Corporation Measurement apparatus detecting consumption current of a display

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