WO2009013986A1 - 表示装置および表示装置の駆動方法 - Google Patents

表示装置および表示装置の駆動方法 Download PDF

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Publication number
WO2009013986A1
WO2009013986A1 PCT/JP2008/062105 JP2008062105W WO2009013986A1 WO 2009013986 A1 WO2009013986 A1 WO 2009013986A1 JP 2008062105 W JP2008062105 W JP 2008062105W WO 2009013986 A1 WO2009013986 A1 WO 2009013986A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight
display device
section
failure
detecting section
Prior art date
Application number
PCT/JP2008/062105
Other languages
English (en)
French (fr)
Inventor
Kohei Nanbu
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
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Priority to CN2008800211306A priority Critical patent/CN102159879A/zh
Priority to US12/452,284 priority patent/US20100134526A1/en
Publication of WO2009013986A1 publication Critical patent/WO2009013986A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

　表示パネル（４）とバックライト（３）とインバータ部（２）とを備える透過型の液晶表示装置（１０）であって、インバータ部（２）に供給される電圧が、インバータ部（２）を正常に駆動させるために必要となる所定値以上であるか否かを判断する比較処理部（５１）と、バックライト（３）の点灯状態を検出する点灯状態検出部（５２）と、それぞれの処理結果に基づいて、バックライト（３）が故障しているか否かを判断するとともに、判断結果に応じた信号を出力するバックライト故障検出部（５３）とを備え、バックライト故障検出部（５３）は、上記電圧が上記所定値以上であって、かつ、バックライト（３）が正常に点灯していない場合にはバックライト故障信号を出力する一方、上記電圧が上記所定値未満である場合には、上記バックライト故障信号を出力しない。これにより、バックライトを用いた表示装置において、バックライトが正常に点灯していない原因を特定し、保守作業の効率化を図る。
PCT/JP2008/062105 2007-07-20 2008-07-03 表示装置および表示装置の駆動方法 WO2009013986A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800211306A CN102159879A (zh) 2007-07-20 2008-07-03 显示装置及显示装置的驱动方法
US12/452,284 US20100134526A1 (en) 2007-07-20 2008-07-03 Display device and method for driving display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007190103 2007-07-20
JP2007-190103 2007-07-20

Publications (1)

Publication Number Publication Date
WO2009013986A1 true WO2009013986A1 (ja) 2009-01-29

Family

ID=40281244

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/062105 WO2009013986A1 (ja) 2007-07-20 2008-07-03 表示装置および表示装置の駆動方法

Country Status (3)

Country Link
US (1) US20100134526A1 (ja)
CN (1) CN102159879A (ja)
WO (1) WO2009013986A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021182085A (ja) * 2020-05-19 2021-11-25 株式会社Ye Digital 異常判定装置および異常判定方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8289269B2 (en) * 2007-07-20 2012-10-16 Sharp Kabushiki Kaisha Display device and method for driving display device
JP5063721B2 (ja) * 2010-03-15 2012-10-31 シャープ株式会社 画像処理装置
CN105607317B (zh) * 2016-03-24 2018-11-23 京东方科技集团股份有限公司 显示器亮度调整方法、测试方法及装置、显示器测试设备
CN113602319A (zh) * 2021-09-13 2021-11-05 青岛汉桦电子科技有限公司 一种应用于轨道交通环境的车载乘客信息显示系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10319865A (ja) * 1997-05-15 1998-12-04 Nec Shizuoka Ltd 液晶表示装置
JPH11121188A (ja) * 1997-10-17 1999-04-30 Meiji Natl Ind Co Ltd 放電灯制御装置
JP2000082592A (ja) * 1998-09-07 2000-03-21 Mitsubishi Electric Corp 放電灯点灯装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3062418B2 (ja) * 1995-06-02 2000-07-10 キヤノン株式会社 表示装置並びに表示システム及び表示制御方法
JP2002123226A (ja) * 2000-10-12 2002-04-26 Hitachi Ltd 液晶表示装置
KR100911820B1 (ko) * 2002-12-26 2009-08-12 엘지디스플레이 주식회사 액정표시장치의 인버터 및 이를 이용한 백라이트 램프검사장치
KR100616613B1 (ko) * 2004-08-27 2006-08-28 삼성전기주식회사 Ｕ자형 램프용 백라이트 인버터
KR100751454B1 (ko) * 2005-09-07 2007-08-23 삼성전자주식회사 디스플레이 장치
JP2007147956A (ja) * 2005-11-28 2007-06-14 Sharp Corp 表示装置
US8289269B2 (en) * 2007-07-20 2012-10-16 Sharp Kabushiki Kaisha Display device and method for driving display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10319865A (ja) * 1997-05-15 1998-12-04 Nec Shizuoka Ltd 液晶表示装置
JPH11121188A (ja) * 1997-10-17 1999-04-30 Meiji Natl Ind Co Ltd 放電灯制御装置
JP2000082592A (ja) * 1998-09-07 2000-03-21 Mitsubishi Electric Corp 放電灯点灯装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021182085A (ja) * 2020-05-19 2021-11-25 株式会社Ye Digital 異常判定装置および異常判定方法

Also Published As

Publication number Publication date
US20100134526A1 (en) 2010-06-03
CN102159879A (zh) 2011-08-17

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