TW200601235A - Method for controlling luminance of backlight unit - Google Patents

Method for controlling luminance of backlight unit

Info

Publication number
TW200601235A
TW200601235A TW094117115A TW94117115A TW200601235A TW 200601235 A TW200601235 A TW 200601235A TW 094117115 A TW094117115 A TW 094117115A TW 94117115 A TW94117115 A TW 94117115A TW 200601235 A TW200601235 A TW 200601235A
Authority
TW
Taiwan
Prior art keywords
luminance
lamp
backlight unit
control signals
controlling luminance
Prior art date
Application number
TW094117115A
Other languages
English (en)
Other versions
TWI304564B (en
Inventor
Hee-Jung Hong
Original Assignee
Lg Philips Lcd Co Ltd
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 Lg Philips Lcd Co Ltd filed Critical Lg Philips Lcd Co Ltd
Publication of TW200601235A publication Critical patent/TW200601235A/zh
Application granted granted Critical
Publication of TWI304564B publication Critical patent/TWI304564B/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast
    • 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
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Planar Illumination Modules (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
TW094117115A 2004-05-28 2005-05-25 Method for controlling luminance of backlight unit TWI304564B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040038344A KR20050112905A (ko) 2004-05-28 2004-05-28 백라이트 유닛의 휘도 제어방법

Publications (2)

Publication Number Publication Date
TW200601235A true TW200601235A (en) 2006-01-01
TWI304564B TWI304564B (en) 2008-12-21

Family

ID=34980096

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094117115A TWI304564B (en) 2004-05-28 2005-05-25 Method for controlling luminance of backlight unit

Country Status (5)

Country Link
US (1) US8085237B2 (zh)
KR (1) KR20050112905A (zh)
CN (1) CN100354713C (zh)
FR (1) FR2870946B1 (zh)
TW (1) TWI304564B (zh)

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KR101332029B1 (ko) * 2006-12-29 2013-11-22 엘지디스플레이 주식회사 액정표시장치 구동회로 및 그 구동방법
CN101290757A (zh) * 2007-04-20 2008-10-22 深圳富泰宏精密工业有限公司 可动态调整背光的便携式电子装置及其动态调整背光的方法
KR101387506B1 (ko) * 2007-09-11 2014-04-21 엘지전자 주식회사 영상기기의 백라이트 제어 방법 및 그 방법을 채용한영상기기
US20100245310A1 (en) * 2007-11-01 2010-09-30 Masahiro Hashimoto Luminance control method and display
CN101465099B (zh) * 2007-12-19 2012-05-30 康佳集团股份有限公司 一种lcd tv背光驱动电路和方法
KR20090105145A (ko) * 2008-04-01 2009-10-07 삼성전자주식회사 백라이트 유닛 어셈블리, 이를 구비하는 액정 표시 장치 및그 디밍 방법
KR101286540B1 (ko) * 2008-04-16 2013-07-17 엘지디스플레이 주식회사 액정표시장치
KR101605157B1 (ko) 2009-03-24 2016-03-22 삼성디스플레이 주식회사 표시 장치 구동 방법
KR101598393B1 (ko) 2009-06-08 2016-03-02 삼성디스플레이 주식회사 광원 디밍 방법, 이를 수행하기 위한 표시 장치
US20110134023A1 (en) * 2009-12-03 2011-06-09 Yu-Hsiung Feng Liquid crystal display and dimming method and dimming device for backlight module
CN101943357A (zh) * 2010-07-14 2011-01-12 深圳市华星光电技术有限公司 可动态调整亮度的背光模块及其方法
CN104461434B (zh) * 2014-12-19 2018-09-04 深圳创维－Rgb电子有限公司 调整屏幕显示尺寸的方法及装置
CN105810155A (zh) * 2016-05-10 2016-07-27 福建联迪商用设备有限公司 一种低功耗的液晶显示器件背光回路及其控制方法

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US5786801A (en) * 1996-09-06 1998-07-28 Sony Corporation Back light control apparatus and method for a flat display system
JPH11191894A (ja) * 1997-12-25 1999-07-13 Toshiba Corp 自動輝度補正装置
JP3340703B2 (ja) * 1999-05-10 2002-11-05 松下電器産業株式会社 画像表示装置
JP4558874B2 (ja) * 1999-12-17 2010-10-06 ティーピーオー ホンコン ホールディング リミテッド 表示装置の照明装置
KR100666321B1 (ko) * 2000-06-30 2007-01-09 삼성전자주식회사 적층형 백라이트 어셈블리, 이를 적용한 액정표시장치 및이들의 조립 방법
JP2002099238A (ja) * 2000-09-22 2002-04-05 Nec Mitsubishi Denki Visual Systems Kk 表示濃度変換方法及び表示装置
US6317347B1 (en) * 2000-10-06 2001-11-13 Philips Electronics North America Corporation Voltage feed push-pull resonant inverter for LCD backlighting
JP2003050569A (ja) * 2000-11-30 2003-02-21 Hitachi Ltd 液晶表示装置
JP2002297103A (ja) * 2001-03-29 2002-10-11 ▲神▼逹電腦股▲ふん▼有限公司 液晶ディスプレイの自動輝度制御光センサーのための補正方法
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JP4482286B2 (ja) * 2003-03-31 2010-06-16 シャープ株式会社 照明装置及びそれを備えた表示装置
US6936975B2 (en) * 2003-04-15 2005-08-30 02Micro International Limited Power supply for an LCD panel
US7477228B2 (en) * 2003-12-22 2009-01-13 Intel Corporation Method and apparatus for characterizing and/or predicting display backlight response latency

Also Published As

Publication number Publication date
US8085237B2 (en) 2011-12-27
US20060007104A1 (en) 2006-01-12
FR2870946A1 (fr) 2005-12-02
CN100354713C (zh) 2007-12-12
FR2870946B1 (fr) 2006-10-20
KR20050112905A (ko) 2005-12-01
TWI304564B (en) 2008-12-21
CN1702502A (zh) 2005-11-30

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