CN101527120B - 驱动光源的方法、光源装置和具有该光源装置的显示装置 - Google Patents

驱动光源的方法、光源装置和具有该光源装置的显示装置 Download PDF

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Publication number
CN101527120B
CN101527120B CN2009100063565A CN200910006356A CN101527120B CN 101527120 B CN101527120 B CN 101527120B CN 2009100063565 A CN2009100063565 A CN 2009100063565A CN 200910006356 A CN200910006356 A CN 200910006356A CN 101527120 B CN101527120 B CN 101527120B
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China
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voltage
light source
led strings
led
led string
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Expired - Fee Related
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CN2009100063565A
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Chinese (zh)
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CN101527120A (zh
Inventor
芮秉大
杨秉春
金基哲
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Samsung Display Co Ltd
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Samsung Display Co Ltd
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    • 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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency AC, or with separate oscillator frequency
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • 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
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • 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

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  • 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)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Liquid Crystal (AREA)
CN2009100063565A 2008-03-05 2009-02-10 驱动光源的方法、光源装置和具有该光源装置的显示装置 Expired - Fee Related CN101527120B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020080020279 2008-03-05
KR10-2008-0020279 2008-03-05
KR1020080020279A KR101473366B1 (ko) 2008-03-05 2008-03-05 광원구동방법, 이를 수행하기 위한 광원 장치 및 이 광원장치를 포함하는 표시 장치

Publications (2)

Publication Number Publication Date
CN101527120A CN101527120A (zh) 2009-09-09
CN101527120B true CN101527120B (zh) 2013-06-05

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CN2009100063565A Expired - Fee Related CN101527120B (zh) 2008-03-05 2009-02-10 驱动光源的方法、光源装置和具有该光源装置的显示装置

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Country Link
US (1) US8363004B2 (enExample)
JP (1) JP2009212082A (enExample)
KR (1) KR101473366B1 (enExample)
CN (1) CN101527120B (enExample)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101521098B1 (ko) * 2009-01-06 2015-05-20 삼성디스플레이 주식회사 광원 구동 방법 및 이를 수행하기 위한 광원 장치
EP2214456A1 (en) * 2009-01-22 2010-08-04 Nanker(Guang Zhou)Semiconductor Manufacturing Corp. LED lamp circuit
KR101539359B1 (ko) * 2009-02-05 2015-07-27 삼성디스플레이 주식회사 광원 구동 방법, 이를 수행하기 위한 광원 장치 및 이 광원장치를 포함하는 표시 장치
WO2011032220A1 (en) * 2009-09-16 2011-03-24 Electronic Research Pty Ltd A led display system
US8525774B2 (en) * 2009-10-28 2013-09-03 Top Victory Investments Ltd. Light-emitting diode (LED) driving circuit
KR101588901B1 (ko) * 2009-11-24 2016-02-12 엘지디스플레이 주식회사 액정표시장치 및 그의 로컬디밍 제어방법
KR101445785B1 (ko) * 2009-12-04 2014-10-01 오스람 게엠베하 전자 변환기의 동작을 제어하기 위한 방법, 및 대응하는 전자 변환기, 조명 시스템 및 소프트웨어 물건
US8493000B2 (en) * 2010-01-04 2013-07-23 Cooledge Lighting Inc. Method and system for driving light emitting elements
KR101696749B1 (ko) * 2010-01-25 2017-01-17 삼성디스플레이 주식회사 백라이트 어셈블리 및 이를 갖는 표시장치
DE102010003136A1 (de) * 2010-03-23 2011-09-29 Osram Gesellschaft mit beschränkter Haftung Schaltungsanordnung und Verfahren zum Betreiben mindestens einer LED
JP5429021B2 (ja) * 2010-04-22 2014-02-26 サンケン電気株式会社 Ｌｅｄ駆動装置
KR101097352B1 (ko) 2010-05-06 2011-12-23 삼성모바일디스플레이주식회사 Ｄｃ-ｄｃ 컨버터, 그 구동 방법, ｄｃ-ｄｃ 컨버터를 포함하는 유기 전계 발광 표시 장치 및 그 구동 방법
KR101146989B1 (ko) 2010-05-06 2012-05-22 삼성모바일디스플레이주식회사 Ｄｃ-ｄｃ 컨버터, 이를 포함하는 유기 전계 발광 표시 장치 및 그 구동 방법
CN102300376B (zh) * 2010-06-25 2014-04-09 上海新进半导体制造有限公司 Led驱动芯片的led短路检测保护方法及装置
US8729378B2 (en) * 2010-09-15 2014-05-20 Avedis Zildjian Co. Non-contact cymbal pickup using multiple microphones
CN102438345A (zh) * 2010-09-29 2012-05-02 力林科技股份有限公司 发光二极管的驱动电路及用于驱动电路的短路保护电路
CN102446492A (zh) * 2010-10-08 2012-05-09 联咏科技股份有限公司 短路侦测电路及方法与发光二极管驱动芯片及装置
CN102446491A (zh) * 2010-10-08 2012-05-09 联咏科技股份有限公司 整合背光驱动芯片与发光二极管背光装置
CN102467881A (zh) * 2010-11-09 2012-05-23 联咏科技股份有限公司 发光二极管驱动装置、发光二极管装置及其驱动方法
KR102006966B1 (ko) * 2010-11-23 2019-08-02 온세미컨덕터코리아 주식회사 Ｌｅｄ 발광 장치의 구동 장치 및 구동 방법
JP2012118263A (ja) * 2010-11-30 2012-06-21 Mitsumi Electric Co Ltd バックライト装置、該バックライト装置を備えた表示装置、及び、照明装置
US8657129B2 (en) 2010-12-07 2014-02-25 Avedis Zildjian Co. Drum rack
US8497418B2 (en) 2010-12-13 2013-07-30 Avedis Zildjian Co. System and method for electronic processing of cymbal vibration
KR101717565B1 (ko) * 2010-12-23 2017-03-17 삼성전자 주식회사 디스플레이장치 및 그 제어방법
TWI425874B (zh) * 2010-12-23 2014-02-01 Leadtrend Tech Corp 積體電路、控制方法、與光源提供系統
JP5720266B2 (ja) * 2011-01-21 2015-05-20 ソニー株式会社 発光素子駆動回路、発光装置、表示装置、および発光制御方法
KR101876561B1 (ko) * 2011-08-26 2018-07-10 엘지디스플레이 주식회사 액정표시장치와 이의 구동방법
DE102011116231B4 (de) * 2011-10-17 2017-12-21 Austriamicrosystems Ag Beleuchtungsanordnung und Verfahren zum Erkennen eines Kurzschlusses bei Dioden
CN102435904B (zh) * 2011-11-15 2014-08-20 深圳Tcl新技术有限公司 Led电路错误短路故障的检测方法及检测电路
KR101955034B1 (ko) * 2011-12-07 2019-03-07 매그나칩 반도체 유한회사 Ｌｅｄ 어레이 쇼트여부 감지회로 및 이를 이용한 ｌｅｄ 구동장치
KR101977968B1 (ko) * 2012-03-14 2019-05-14 엘지디스플레이 주식회사 액정표시장치와 이의 구동방법
US9548021B2 (en) 2012-06-01 2017-01-17 Samsung Display Co., Ltd. Method of driving light-source and display apparatus for performing the method
CN102740567B (zh) * 2012-07-04 2014-10-29 深圳市华星光电技术有限公司 一种led背光驱动电路、背光模组和液晶显示装置
US9001109B2 (en) 2012-07-09 2015-04-07 Shenzhen China Star Optoelectronics Technology Co., Ltd. LED backlight driving circuit, backlight module, and LCD device
US8872015B2 (en) 2012-08-27 2014-10-28 Avedis Zildjian Co. Cymbal transducer using electret accelerometer
US8946994B2 (en) * 2012-09-25 2015-02-03 Lg Display Co., Ltd. Organic light emitting display device and driving method thereof
CN102855860B (zh) * 2012-09-26 2015-04-22 深圳Tcl新技术有限公司 Led驱动电路及液晶显示器
US9076357B2 (en) * 2012-11-16 2015-07-07 Apple Inc. Redundant operation of a backlight unit of a display device under a shorted LED condition
US9908474B2 (en) 2013-01-25 2018-03-06 Gentex Corporation Drive circuit for an electro-optic rearview mirror system
CN103177698B (zh) * 2013-03-27 2016-02-03 深圳市华星光电技术有限公司 一种led背光驱动电路及背光模组
CN103295547B (zh) * 2013-05-08 2015-05-20 深圳市华星光电技术有限公司 一种led背光驱动电路及其驱动方法、液晶显示装置
US9258862B2 (en) 2013-05-08 2016-02-09 Shenzhen China Star Optoelectronics Technology Co., Ltd LED backlight driving circuit, LCD device, and method for driving the LED backlight driving circuit
CN103280193B (zh) * 2013-05-28 2015-11-25 深圳市华星光电技术有限公司 一种背光驱动电路、液晶显示装置和背光驱动方法
US9271361B2 (en) 2013-05-28 2016-02-23 Shenzhen China Star Optoelectronics Technology Co., Ltd Backlight driving circuit, LCD device, and method for driving the backlight driving circuit
KR20160017816A (ko) 2014-08-06 2016-02-17 삼성디스플레이 주식회사 광원 장치, 이의 구동 방법 및 이를 갖는 표시 장치
CN104680986B (zh) * 2015-03-19 2017-07-11 京东方科技集团股份有限公司 一种背光模组、液晶显示器及显示装置
TWI644592B (zh) * 2015-07-03 2018-12-11 點晶科技股份有限公司 控制發光二極體亮度的信號產生方法及電路
KR20170065060A (ko) * 2015-12-02 2017-06-13 삼성디스플레이 주식회사 전원 공급부, 이를 포함하는 표시 장치 및 그 구동 방법
KR102483086B1 (ko) * 2016-03-21 2022-12-29 엘지전자 주식회사 영상표시장치
KR102008360B1 (ko) * 2017-05-25 2019-08-07 온세미컨덕터코리아 주식회사 Led 발광 장치의 구동 방법
KR102581457B1 (ko) 2018-07-05 2023-09-21 엘지이노텍 주식회사 광원 구동장치 및 그 방법
CN108983453B (zh) * 2018-07-26 2021-11-05 武汉天马微电子有限公司 背光模组的检测装置、检测治具及显示模组
DE102018122649A1 (de) * 2018-09-17 2020-03-19 Infineon Technologies Ag Elektronische Schaltung mit einem Led-Modul
KR102193202B1 (ko) * 2018-11-23 2020-12-18 문대식 Led 구동 장치 제어 시스템
CN111986625A (zh) * 2020-08-05 2020-11-24 深圳市华星光电半导体显示技术有限公司 背光驱动电路及显示装置
CN112967662B (zh) * 2020-10-30 2022-05-13 重庆康佳光电技术研究院有限公司 Led驱动方法、驱动装置
CN114596821B (zh) * 2022-05-09 2022-08-16 惠科股份有限公司 控制电路、控制方法和显示装置
CN116106784B (zh) * 2023-02-22 2025-07-11 天津芯格诺微电子有限公司 应用于led背光面板的短路检测电路
KR20250053408A (ko) * 2023-10-13 2025-04-22 주식회사 엘엑스세미콘 로컬 디밍 방법 및 이를 구현하는 영상데이터처리장치
EP4598278A1 (en) * 2024-01-30 2025-08-06 Zumtobel Lighting GmbH Led luminaire with fault detection capability

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005079121A2 (en) * 2004-02-11 2005-08-25 Peter Bhagat Apparatus for the control of lighting and associated methods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7119498B2 (en) * 2003-12-29 2006-10-10 Texas Instruments Incorporated Current control device for driving LED devices
JP5041671B2 (ja) * 2005-03-31 2012-10-03 三菱電機株式会社 誘導灯点灯装置
KR100674867B1 (ko) * 2005-05-18 2007-01-30 삼성전기주식회사 과전류/과전압 보호 기능을 갖는 직류-직류 컨버터 및 이를구비한 ｌｅｄ 구동회로
US7800876B2 (en) * 2006-01-09 2010-09-21 Microsemi Corp. - Analog Mixed Signal Group Ltd. Fault detection mechanism for LED backlighting
TW200737070A (en) * 2006-02-23 2007-10-01 Powerdsine Ltd Voltage controlled backlight driver
JP4957024B2 (ja) * 2006-03-09 2012-06-20 日亜化学工業株式会社 発光装置、発光素子駆動回路及び発光素子の駆動方法
US20070273681A1 (en) * 2006-05-24 2007-11-29 Mayell Robert J Method and apparatus to power light emitting diode arrays
JP4175426B2 (ja) * 2006-05-30 2008-11-05 ソニー株式会社 バックライト装置及びカラー画像表示装置
US9342266B2 (en) * 2007-08-08 2016-05-17 Landmark Screens, Llc Apparatus for dynamically circumventing faults in the light emitting diodes (LEDs) of a pixel in a graphical display
US7999486B2 (en) * 2008-03-17 2011-08-16 Himax Analogic, Inc. Driving circuit and method for light emitting diode

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005079121A2 (en) * 2004-02-11 2005-08-25 Peter Bhagat Apparatus for the control of lighting and associated methods

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Publication number Publication date
CN101527120A (zh) 2009-09-09
JP2009212082A (ja) 2009-09-17
KR101473366B1 (ko) 2014-12-17
US8363004B2 (en) 2013-01-29
KR20090095135A (ko) 2009-09-09
US20090225021A1 (en) 2009-09-10

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