CN102637412B - 一种led背光驱动电路、液晶显示装置和一种驱动方法 - Google Patents
一种led背光驱动电路、液晶显示装置和一种驱动方法 Download PDFInfo
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- CN102637412B CN102637412B CN201210131423.8A CN201210131423A CN102637412B CN 102637412 B CN102637412 B CN 102637412B CN 201210131423 A CN201210131423 A CN 201210131423A CN 102637412 B CN102637412 B CN 102637412B
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- Prior art keywords
- resistance
- reference voltage
- led lamp
- comparing unit
- voltage
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/35—Balancing circuits
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
Abstract
Description
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210131423.8A CN102637412B (zh) | 2012-04-28 | 2012-04-28 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
PCT/CN2012/074904 WO2013159358A1 (zh) | 2012-04-28 | 2012-04-28 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
US13/515,284 US20130285571A1 (en) | 2012-04-26 | 2012-04-28 | LED Backlight drive circuit, LCD Device and Driving Method |
PCT/CN2012/075015 WO2013159371A1 (zh) | 2012-04-28 | 2012-05-03 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210131423.8A CN102637412B (zh) | 2012-04-28 | 2012-04-28 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102637412A CN102637412A (zh) | 2012-08-15 |
CN102637412B true CN102637412B (zh) | 2015-02-11 |
Family
ID=46621786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210131423.8A Active CN102637412B (zh) | 2012-04-26 | 2012-04-28 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130285571A1 (zh) |
CN (1) | CN102637412B (zh) |
WO (2) | WO2013159358A1 (zh) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9426862B2 (en) * | 2012-04-12 | 2016-08-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LED backlight drive circuit, liquid crystal display device and driving method |
US8890417B2 (en) | 2012-11-22 | 2014-11-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight driving circuit, backlight module, and LCD device |
CN103021343A (zh) * | 2012-11-22 | 2013-04-03 | 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 |
US9230490B2 (en) | 2012-12-25 | 2016-01-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight driver circuit |
CN103021346B (zh) * | 2012-12-25 | 2016-03-02 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路、驱动方法及液晶显示装置 |
US20140265925A1 (en) * | 2013-03-14 | 2014-09-18 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Led backlight driving circuit, lcd device, and method for driving the led backlight drving circuit |
CN103137080B (zh) * | 2013-03-14 | 2015-07-15 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
CN103177697B (zh) * | 2013-03-15 | 2015-11-25 | 深圳市华星光电技术有限公司 | 一种背光驱动电路及背光驱动方法、液晶显示器 |
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 |
US9236014B2 (en) * | 2013-05-08 | 2016-01-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight driving circuit, LCD device, and method for driving the LED backlight driving circuit |
CN103295536B (zh) * | 2013-05-08 | 2015-09-09 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路、液晶显示装置和一种驱动方法 |
CN103345903B (zh) * | 2013-07-15 | 2015-09-02 | 深圳市华星光电技术有限公司 | 一种led背光系统及显示装置 |
CN103500558B (zh) | 2013-10-21 | 2016-04-27 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路和驱动方法 |
US9210748B2 (en) * | 2013-11-20 | 2015-12-08 | Texas Instruments Incorporated | Systems and methods of driving multiple outputs |
CN103606354B (zh) * | 2013-11-25 | 2016-04-13 | 深圳市华星光电技术有限公司 | Led背光驱动电路以及液晶显示器 |
CN103680469B (zh) * | 2013-12-23 | 2015-12-30 | 深圳市华星光电技术有限公司 | 一种液晶显示器及其液晶显示器的亮度和对比度的调整方法 |
CN104950239B (zh) * | 2014-03-25 | 2019-06-07 | 深圳市海洋王照明工程有限公司 | 一种背光驱动检测电路 |
CN104267249A (zh) * | 2014-10-09 | 2015-01-07 | 长智光电(四川)有限公司 | 一种led灯串间电压差值的测量装置 |
CN104282281B (zh) * | 2014-10-20 | 2016-11-09 | 深圳市华星光电技术有限公司 | 一种 led 背光驱动电路及其故障检测方法 |
CN105225643B (zh) * | 2015-10-09 | 2017-12-12 | 惠科股份有限公司 | 一种背光电压电流调整电路及方法 |
CN106228928B (zh) * | 2016-08-30 | 2019-05-21 | 深圳市华星光电技术有限公司 | 用于产生多个同一电压的电路结构以及显示装置 |
CN106898310B (zh) * | 2017-03-21 | 2019-03-01 | 京东方科技集团股份有限公司 | 一种拓展led数量的电路、背光源、显示装置 |
RU179909U1 (ru) * | 2017-10-24 | 2018-05-29 | Акционерное общество "Сарапульский электрогенераторный завод" | Схема управления множеством светодиодов |
TWI669985B (zh) * | 2018-10-12 | 2019-08-21 | 力林科技股份有限公司 | 發光二極體驅動裝置以及發光二極體背光模組 |
CN110299113B (zh) * | 2019-05-09 | 2020-12-11 | 京东方科技集团股份有限公司 | 一种背光驱动系统、背光驱动方法和显示装置 |
CN112669778B (zh) * | 2019-10-31 | 2022-08-12 | 荣耀终端有限公司 | 一种背光控制电路及其控制方法、显示终端 |
CN111028791B (zh) * | 2019-12-11 | 2021-03-23 | 昆山龙腾光电股份有限公司 | 一种背光驱动器及显示装置 |
CN111315076B (zh) * | 2020-03-24 | 2022-04-12 | 深圳创维-Rgb电子有限公司 | 一种led电源系统及装置 |
CN113556848A (zh) * | 2020-04-24 | 2021-10-26 | 中强光电股份有限公司 | 发光装置以及光产生方法 |
CN114449699A (zh) * | 2020-11-03 | 2022-05-06 | 西安钛铂锶电子科技有限公司 | 显示驱动芯片和led灯板 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201233712Y (zh) * | 2008-07-09 | 2009-05-06 | 北京巨数数字技术开发有限公司 | 一种液晶显示装置 |
CN101494030A (zh) * | 2008-01-24 | 2009-07-29 | 财团法人工业技术研究院 | 背光控制装置及其控制背光器件的方法 |
CN102413608A (zh) * | 2011-10-31 | 2012-04-11 | 杭州矽力杰半导体技术有限公司 | 一种参考电压调节方法、电路及应用其的恒流源驱动电路 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6864641B2 (en) * | 2003-02-20 | 2005-03-08 | Visteon Global Technologies, Inc. | Method and apparatus for controlling light emitting diodes |
EP1499165B1 (en) * | 2003-07-07 | 2007-09-12 | Rohm Co., Ltd. | Load driving device and portable apparatus utilizing such driving device |
JP2006185942A (ja) * | 2004-12-24 | 2006-07-13 | Toshiba Matsushita Display Technology Co Ltd | 面光源制御装置 |
US7081722B1 (en) * | 2005-02-04 | 2006-07-25 | Kimlong Huynh | Light emitting diode multiphase driver circuit and method |
KR101265102B1 (ko) * | 2005-10-29 | 2013-05-16 | 엘지디스플레이 주식회사 | 백라이트 유닛과 그 구동방법 |
KR101288593B1 (ko) * | 2006-10-16 | 2013-07-22 | 엘지디스플레이 주식회사 | 발광 다이오드 구동 장치 및 이를 이용한 액정 표시 장치 |
TWI375935B (en) * | 2007-05-22 | 2012-11-01 | Ite Tech Inc | Constant curent driving circuit |
JP4775912B2 (ja) * | 2007-07-06 | 2011-09-21 | 株式会社小糸製作所 | 車両用灯具の点灯制御装置 |
KR101549040B1 (ko) * | 2008-07-11 | 2015-09-01 | 삼성전자 주식회사 | 백라이트 어셈블리, 이를 포함하는 디스플레이장치 및 그제어방법 |
US8159139B2 (en) * | 2008-09-25 | 2012-04-17 | Microsemi Corp.—Analog Mixed Signal Group Ltd. | Color and intensity control over power wires |
JP5109946B2 (ja) * | 2008-11-28 | 2012-12-26 | ミツミ電機株式会社 | Led駆動装置 |
CN201667742U (zh) * | 2010-01-22 | 2010-12-08 | 青岛海信电器股份有限公司 | 一种发光二极管led背光驱动装置及液晶显示器 |
KR20110096462A (ko) * | 2010-02-22 | 2011-08-30 | 삼성전자주식회사 | 광원 드라이버, 이의 동작 방법, 및 이를 포함하는 장치들 |
CN102196618B (zh) * | 2010-03-16 | 2015-07-22 | 成都芯源系统有限公司 | Led照明驱动电路和方法 |
US8810153B2 (en) * | 2010-07-16 | 2014-08-19 | Texas Instruments Incorporation | Led power supply systems and methods |
TWI419121B (zh) * | 2010-09-23 | 2013-12-11 | Novatek Microelectronics Corp | 整合背光驅動晶片與發光二極體背光裝置 |
CN102280089A (zh) * | 2011-08-18 | 2011-12-14 | 深圳市华星光电技术有限公司 | 一种led背光驱动方法、led背光驱动电路及液晶显示装置 |
TWI452935B (zh) * | 2011-10-21 | 2014-09-11 | Vivotek Inc | 光源驅動裝置 |
-
2012
- 2012-04-28 US US13/515,284 patent/US20130285571A1/en not_active Abandoned
- 2012-04-28 WO PCT/CN2012/074904 patent/WO2013159358A1/zh active Application Filing
- 2012-04-28 CN CN201210131423.8A patent/CN102637412B/zh active Active
- 2012-05-03 WO PCT/CN2012/075015 patent/WO2013159371A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101494030A (zh) * | 2008-01-24 | 2009-07-29 | 财团法人工业技术研究院 | 背光控制装置及其控制背光器件的方法 |
CN201233712Y (zh) * | 2008-07-09 | 2009-05-06 | 北京巨数数字技术开发有限公司 | 一种液晶显示装置 |
CN102413608A (zh) * | 2011-10-31 | 2012-04-11 | 杭州矽力杰半导体技术有限公司 | 一种参考电压调节方法、电路及应用其的恒流源驱动电路 |
Non-Patent Citations (1)
Title |
---|
JP特开2010-130810A 2010.06.10 * |
Also Published As
Publication number | Publication date |
---|---|
CN102637412A (zh) | 2012-08-15 |
US20130285571A1 (en) | 2013-10-31 |
WO2013159371A1 (zh) | 2013-10-31 |
WO2013159358A1 (zh) | 2013-10-31 |
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GR01 | Patent grant | ||
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Address after: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 518000 Guangming Avenue, Guangming New District, Guangdong, Shenzhen 9-2, China Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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TR01 | Transfer of patent right |
Effective date of registration: 20210310 Address after: No.109, Kangping Road, Liuyang economic and Technological Development Zone, Changsha, Hunan 410300 Patentee after: Changsha Huike optoelectronics Co., Ltd Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: TCL Huaxing Photoelectric Technology Co.,Ltd. |
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