CN102682719A - 一种led背光驱动电路、背光模组及液晶显示装置 - Google Patents
一种led背光驱动电路、背光模组及液晶显示装置 Download PDFInfo
- Publication number
- CN102682719A CN102682719A CN2012101518146A CN201210151814A CN102682719A CN 102682719 A CN102682719 A CN 102682719A CN 2012101518146 A CN2012101518146 A CN 2012101518146A CN 201210151814 A CN201210151814 A CN 201210151814A CN 102682719 A CN102682719 A CN 102682719A
- Authority
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- China
- Prior art keywords
- led
- driving circuit
- led lamp
- lamp string
- voltage
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 230000009466 transformation Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- 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
- H05B45/395—Linear regulators
-
- 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
- G09G2330/02—Details of power systems and of start or stop of display operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210151814.6A CN102682719B (zh) | 2012-05-16 | 2012-05-16 | 一种led背光驱动电路、背光模组及液晶显示装置 |
PCT/CN2012/075788 WO2013170490A1 (zh) | 2012-05-16 | 2012-05-21 | 一种led背光驱动电路、背光模组及液晶显示装置 |
US13/518,429 US8994639B2 (en) | 2012-05-16 | 2012-05-21 | LED backlight driving circuit, backlight module, and LCD device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210151814.6A CN102682719B (zh) | 2012-05-16 | 2012-05-16 | 一种led背光驱动电路、背光模组及液晶显示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102682719A true CN102682719A (zh) | 2012-09-19 |
CN102682719B CN102682719B (zh) | 2015-07-15 |
Family
ID=46814546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210151814.6A Active CN102682719B (zh) | 2012-05-16 | 2012-05-16 | 一种led背光驱动电路、背光模组及液晶显示装置 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN102682719B (zh) |
WO (1) | WO2013170490A1 (zh) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102917518A (zh) * | 2012-11-14 | 2013-02-06 | 深圳市华星光电技术有限公司 | 实现led灯条电流倍增的方法及其对应的驱动电路 |
CN102956204A (zh) * | 2012-11-30 | 2013-03-06 | 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 |
CN103177697A (zh) * | 2013-03-15 | 2013-06-26 | 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 |
WO2014190577A1 (zh) * | 2013-05-28 | 2014-12-04 | 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 |
WO2015000185A1 (zh) * | 2013-07-02 | 2015-01-08 | 深圳市华星光电技术有限公司 | 背光驱动电路及减少背光驱动电路软启动时间的方法 |
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 |
CN105825820A (zh) * | 2016-05-06 | 2016-08-03 | 青岛海信电器股份有限公司 | 一种背光驱动电路、背光模组及显示设备 |
US9538593B2 (en) | 2012-11-14 | 2017-01-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for multiplying current of LED light bar and associated driving circuit thereof |
CN106504710A (zh) * | 2017-01-04 | 2017-03-15 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路及液晶显示器 |
CN107909969A (zh) * | 2016-10-11 | 2018-04-13 | 京东方科技集团股份有限公司 | 驱动电路、背光源和显示装置 |
GB2525819B (en) * | 2013-03-11 | 2019-12-25 | Shenzhen China Star Optoelect | Liquid crystal display, LED backlight source, and driving method thereof |
CN112233625A (zh) * | 2020-10-16 | 2021-01-15 | Tcl华星光电技术有限公司 | 一种背光恒流控制电路和背光结构 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1617195A (zh) * | 2003-10-30 | 2005-05-18 | 罗姆股份有限公司 | 发光元件驱动装置、包含该装置的显示模块以及电子设备 |
US20070273306A1 (en) * | 2006-05-24 | 2007-11-29 | Takashi Fujino | LED Lighting Apparatus |
CN101517626A (zh) * | 2006-09-26 | 2009-08-26 | 汤姆森特许公司 | 背光装置和背光显示器的发光二极管元件组 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100383837C (zh) * | 2004-11-23 | 2008-04-23 | 亚洲光学股份有限公司 | 发光二极管驱动电路 |
CN2884777Y (zh) * | 2006-01-10 | 2007-03-28 | 田明放 | Led灯驱动电路 |
KR100952499B1 (ko) * | 2007-12-10 | 2010-04-13 | 주식회사 그린씨앤씨텍 | 병렬 발광다이오드 정전류 구동 회로 |
CN101578003B (zh) * | 2009-05-21 | 2012-10-03 | 浙江大学 | 一种大功率led驱动器 |
JP2011216663A (ja) * | 2010-03-31 | 2011-10-27 | Fujitsu Ten Ltd | Led制御装置及び該装置を備えた液晶表示装置 |
-
2012
- 2012-05-16 CN CN201210151814.6A patent/CN102682719B/zh active Active
- 2012-05-21 WO PCT/CN2012/075788 patent/WO2013170490A1/zh active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1617195A (zh) * | 2003-10-30 | 2005-05-18 | 罗姆股份有限公司 | 发光元件驱动装置、包含该装置的显示模块以及电子设备 |
US20070273306A1 (en) * | 2006-05-24 | 2007-11-29 | Takashi Fujino | LED Lighting Apparatus |
CN101517626A (zh) * | 2006-09-26 | 2009-08-26 | 汤姆森特许公司 | 背光装置和背光显示器的发光二极管元件组 |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9538593B2 (en) | 2012-11-14 | 2017-01-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for multiplying current of LED light bar and associated driving circuit thereof |
CN102917518A (zh) * | 2012-11-14 | 2013-02-06 | 深圳市华星光电技术有限公司 | 实现led灯条电流倍增的方法及其对应的驱动电路 |
CN102917518B (zh) * | 2012-11-14 | 2015-11-04 | 深圳市华星光电技术有限公司 | 实现led灯条电流倍增的方法及其对应的驱动电路 |
CN102956204A (zh) * | 2012-11-30 | 2013-03-06 | 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 |
CN102956204B (zh) * | 2012-11-30 | 2015-11-25 | 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 |
GB2525819B (en) * | 2013-03-11 | 2019-12-25 | Shenzhen China Star Optoelect | Liquid crystal display, LED backlight source, and driving method thereof |
CN103177697A (zh) * | 2013-03-15 | 2013-06-26 | 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 |
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 |
WO2014190577A1 (zh) * | 2013-05-28 | 2014-12-04 | 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 |
WO2015000185A1 (zh) * | 2013-07-02 | 2015-01-08 | 深圳市华星光电技术有限公司 | 背光驱动电路及减少背光驱动电路软启动时间的方法 |
CN108399898A (zh) * | 2016-05-06 | 2018-08-14 | 青岛海信电器股份有限公司 | 一种电视机 |
CN105825820A (zh) * | 2016-05-06 | 2016-08-03 | 青岛海信电器股份有限公司 | 一种背光驱动电路、背光模组及显示设备 |
CN107909969A (zh) * | 2016-10-11 | 2018-04-13 | 京东方科技集团股份有限公司 | 驱动电路、背光源和显示装置 |
CN106504710A (zh) * | 2017-01-04 | 2017-03-15 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路及液晶显示器 |
WO2018126494A1 (zh) * | 2017-01-04 | 2018-07-12 | 深圳市华星光电技术有限公司 | 一种led背光驱动电路及液晶显示器 |
US10446090B2 (en) | 2017-01-04 | 2019-10-15 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight driving circuit and liquid crystal display |
CN112233625A (zh) * | 2020-10-16 | 2021-01-15 | Tcl华星光电技术有限公司 | 一种背光恒流控制电路和背光结构 |
CN112233625B (zh) * | 2020-10-16 | 2024-02-09 | Tcl华星光电技术有限公司 | 一种背光恒流控制电路和背光结构 |
Also Published As
Publication number | Publication date |
---|---|
CN102682719B (zh) | 2015-07-15 |
WO2013170490A1 (zh) | 2013-11-21 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee after: TCL China Star Optoelectronics 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 | ||
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 China Star Optoelectronics Technology Co.,Ltd. |