JP2007141799A - 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法 - Google Patents

面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法 Download PDF

Info

Publication number
JP2007141799A
JP2007141799A JP2005337871A JP2005337871A JP2007141799A JP 2007141799 A JP2007141799 A JP 2007141799A JP 2005337871 A JP2005337871 A JP 2005337871A JP 2005337871 A JP2005337871 A JP 2005337871A JP 2007141799 A JP2007141799 A JP 2007141799A
Authority
JP
Japan
Prior art keywords
luminance
led
light emitting
emitting elements
correction 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.)
Withdrawn
Application number
JP2005337871A
Other languages
English (en)
Japanese (ja)
Inventor
Yuji Kondo
祐司 近藤
Nobuaki Honpo
信明 本保
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.)
Tianma Japan Ltd
Original Assignee
NEC LCD Technologies 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 NEC LCD Technologies Ltd filed Critical NEC LCD Technologies Ltd
Priority to JP2005337871A priority Critical patent/JP2007141799A/ja
Priority to US11/592,289 priority patent/US20070115685A1/en
Priority to KR1020060112670A priority patent/KR100854192B1/ko
Priority to TW095142426A priority patent/TW200727047A/zh
Priority to CNA2006101624188A priority patent/CN1971367A/zh
Publication of JP2007141799A publication Critical patent/JP2007141799A/ja
Withdrawn legal-status Critical Current

Links

Images

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
    • G09G3/3406—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
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • 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
    • G09G2320/0633—Adjustment of display parameters for control of overall brightness by amplitude 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
    • 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
JP2005337871A 2005-11-22 2005-11-22 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法 Withdrawn JP2007141799A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2005337871A JP2007141799A (ja) 2005-11-22 2005-11-22 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法
US11/592,289 US20070115685A1 (en) 2005-11-22 2006-11-03 Flat lighting source, luminance correcting circuit, luminance correcting method and liquid crystal display
KR1020060112670A KR100854192B1 (ko) 2005-11-22 2006-11-15 면광원, 휘도 보정 회로, 휘도 보정 방법 및 액정디스플레이
TW095142426A TW200727047A (en) 2005-11-22 2006-11-16 Flat lighting source, luminance correcting circuit, luminance correcting method and liquid crystal display
CNA2006101624188A CN1971367A (zh) 2005-11-22 2006-11-22 面照明光源、亮度校正电路、亮度校正方法和液晶显示器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005337871A JP2007141799A (ja) 2005-11-22 2005-11-22 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法

Publications (1)

Publication Number Publication Date
JP2007141799A true JP2007141799A (ja) 2007-06-07

Family

ID=38053258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005337871A Withdrawn JP2007141799A (ja) 2005-11-22 2005-11-22 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法

Country Status (5)

Country Link
US (1) US20070115685A1 (ko)
JP (1) JP2007141799A (ko)
KR (1) KR100854192B1 (ko)
CN (1) CN1971367A (ko)
TW (1) TW200727047A (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009026759A (ja) * 2007-07-19 2009-02-05 Aussmak Optoelectronic Corp 発光装置及びその校正方法とコントロール方法
JP2009289515A (ja) * 2008-05-28 2009-12-10 Iwasaki Electric Co Ltd 面照明装置、及び発光ユニット
KR101101250B1 (ko) * 2011-06-16 2012-01-04 버스텍 주식회사 발광다이오드 어레이의 특성 불균일을 개선한 발광다이오드 표시 장치 및 그에 따른 표시 제어 방법
JP2013519204A (ja) * 2010-02-02 2013-05-23 サムグァン インダストリアル エレクトリック カンパニー リミテッド 定出力用ｌｅｄモジュール電源供給コンバータ

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7878698B2 (en) * 2005-09-28 2011-02-01 Sharp Kabushiki Kaisha Backlight unit and liquid crystal display device
JP2008268642A (ja) * 2007-04-23 2008-11-06 Sony Corp バックライト装置、バックライト制御方法、および液晶表示装置
CN100462780C (zh) * 2007-07-31 2009-02-18 友达光电股份有限公司 显示面板、包含其的光电装置及其驱动方法、制造方法
KR100907417B1 (ko) * 2007-08-08 2009-07-10 삼성에스디아이 주식회사 전자방출소자 및 이를 이용한 액정표시장치
KR101450143B1 (ko) * 2007-10-25 2014-10-14 삼성디스플레이 주식회사 타이밍 컨트롤러, 이를 포함하는 액정 표시 장치 및 액정표시 장치의 구동 방법
US20100007588A1 (en) * 2008-07-09 2010-01-14 Adaptive Micro Systems Llc System and method for led degradation and temperature compensation
US20100109562A1 (en) * 2008-11-06 2010-05-06 StarChips Technology Inc. Backlight module and light-emitting device thereof
KR101577223B1 (ko) * 2009-06-03 2015-12-15 엘지디스플레이 주식회사 액정 표시장치
WO2011046552A1 (en) * 2009-10-14 2011-04-21 Hewlett-Packard Development Company, L.P. Stabilized light source having luminance feedback control
CN101697273B (zh) * 2009-10-29 2012-09-19 彩虹集团公司 使用led背光源的lcd亮度均匀性自动校正系统及校正方法
CN102136255B (zh) * 2010-01-27 2012-12-26 京东方科技集团股份有限公司 背光源的颜色补偿方法和装置
JP2012004190A (ja) * 2010-06-14 2012-01-05 Toshiba Corp Ｌｅｄ駆動装置
TWI455578B (zh) 2011-02-08 2014-10-01 Alpha Networks Inc 監控攝影機及其操作方法
CN104157237B (zh) * 2014-07-18 2016-05-11 京东方科技集团股份有限公司 一种显示驱动电路及其驱动方法、显示装置
US10072830B2 (en) * 2016-05-06 2018-09-11 Hung Lin Uniform luminance light-emitting diode circuit board
CN105976767B (zh) * 2016-06-28 2019-06-21 凌云光技术集团有限责任公司 一种面光源亮度均匀性调节方法、装置及系统
CN107863065A (zh) * 2017-11-24 2018-03-30 京东方科技集团股份有限公司 像素单元电路、驱动方法和像素电路
CN109239980A (zh) * 2018-11-28 2019-01-18 厦门天马微电子有限公司 背光组件和显示装置
JP7303047B2 (ja) * 2019-06-27 2023-07-04 矢崎総業株式会社 発光装置及び色度ばらつき補正方法
CN113075525B (zh) * 2021-04-14 2022-03-22 东莞市谷麦光学科技有限公司 一种led分光站电压校正方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69825402T2 (de) * 1997-03-12 2005-08-04 Seiko Epson Corp. Pixelschaltung, anzeigevorrichtung und elektronische apparatur mit stromgesteuerter lichtemittierender vorrichtung
US6774578B2 (en) * 2000-09-19 2004-08-10 Semiconductor Energy Laboratory Co., Ltd. Self light emitting device and method of driving thereof
US6720942B2 (en) * 2002-02-12 2004-04-13 Eastman Kodak Company Flat-panel light emitting pixel with luminance feedback
GB2389951A (en) * 2002-06-18 2003-12-24 Cambridge Display Tech Ltd Display driver circuits for active matrix OLED displays
US7184009B2 (en) * 2002-06-21 2007-02-27 Nokia Corporation Display circuit with optical sensor
US7294816B2 (en) * 2003-12-19 2007-11-13 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. LED illumination system having an intensity monitoring system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009026759A (ja) * 2007-07-19 2009-02-05 Aussmak Optoelectronic Corp 発光装置及びその校正方法とコントロール方法
JP2009289515A (ja) * 2008-05-28 2009-12-10 Iwasaki Electric Co Ltd 面照明装置、及び発光ユニット
JP2013519204A (ja) * 2010-02-02 2013-05-23 サムグァン インダストリアル エレクトリック カンパニー リミテッド 定出力用ｌｅｄモジュール電源供給コンバータ
KR101101250B1 (ko) * 2011-06-16 2012-01-04 버스텍 주식회사 발광다이오드 어레이의 특성 불균일을 개선한 발광다이오드 표시 장치 및 그에 따른 표시 제어 방법

Also Published As

Publication number Publication date
KR100854192B1 (ko) 2008-08-26
US20070115685A1 (en) 2007-05-24
TW200727047A (en) 2007-07-16
KR20070054101A (ko) 2007-05-28
CN1971367A (zh) 2007-05-30

Similar Documents

Publication Publication Date Title
JP2007141799A (ja) 面照明光源、該面照明光源に用いられる輝度補正回路及び輝度補正方法
JP4757585B2 (ja) 光源ユニット及び照明装置
US7696964B2 (en) LED backlight for LCD with color uniformity recalibration over lifetime
JP5071834B2 (ja) 照明装置および調整方法
TWI438742B (zh) 發光裝置與驅動裝置的方法
US7872621B2 (en) Color LED driver
US8120276B2 (en) Light source emitting mixed-colored light and method for controlling the color locus of such a light source
JP4182930B2 (ja) 表示装置及びバックライト装置
JP4891606B2 (ja) バックライトユニット及びこれを用いた液晶表示装置
JP2006171693A (ja) バックライト装置、バックライト駆動方法及び液晶表示装置
JP2010237683A (ja) バックライト装置、バックライト駆動方法及び液晶表示装置
JP2007165632A (ja) Ｌｅｄバックライト装置及び画像表示装置
US20100253613A1 (en) Led backlight and electronic control
KR20090094143A (ko) 전용 컬러 조절부를 가진 ｌｅｄ 모듈 및 대응 방법
US20100117941A1 (en) Color-controlled backlit display device
JP4988525B2 (ja) 発光ダイオード照明器具
CN101742769B (zh) 发光二极管的驱动方法及具有背光组件的显示装置
KR101607126B1 (ko) 백라이트 유닛
KR20150011251A (ko) 백라이트 구동회로, 이의 동작방법 및 이를 포함하는 액정표시장치
JP7043277B2 (ja) 光源モジュール及びバックライト装置
JP2011009117A (ja) 発光装置および発光装置の制御方法

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081016

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20100823