CN102654989B - 液晶显示器的背光模块驱动方法及其系统 - Google Patents
液晶显示器的背光模块驱动方法及其系统 Download PDFInfo
- Publication number
- CN102654989B CN102654989B CN201210137473.7A CN201210137473A CN102654989B CN 102654989 B CN102654989 B CN 102654989B CN 201210137473 A CN201210137473 A CN 201210137473A CN 102654989 B CN102654989 B CN 102654989B
- Authority
- CN
- China
- Prior art keywords
- frequency
- signal
- electrically connected
- comparison signal
- backlight module
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light 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]
- H05B45/10—Controlling the intensity of the light
-
- 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]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210137473.7A CN102654989B (zh) | 2012-05-04 | 2012-05-04 | 液晶显示器的背光模块驱动方法及其系统 |
PCT/CN2012/077213 WO2013163839A1 (zh) | 2012-05-04 | 2012-06-20 | 液晶显示器的背光模块驱动方法及其系统 |
US13/582,908 US8773033B2 (en) | 2012-05-04 | 2012-06-20 | Driving method for backlight unit of liquid crystal display and system thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210137473.7A CN102654989B (zh) | 2012-05-04 | 2012-05-04 | 液晶显示器的背光模块驱动方法及其系统 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102654989A CN102654989A (zh) | 2012-09-05 |
CN102654989B true CN102654989B (zh) | 2014-06-11 |
Family
ID=46730610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210137473.7A Expired - Fee Related CN102654989B (zh) | 2012-05-04 | 2012-05-04 | 液晶显示器的背光模块驱动方法及其系统 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8773033B2 (zh) |
CN (1) | CN102654989B (zh) |
WO (1) | WO2013163839A1 (zh) |
Families Citing this family (3)
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 |
CN103295538B (zh) * | 2013-07-02 | 2015-03-04 | 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 |
CN103677048B (zh) * | 2013-12-03 | 2015-11-11 | 京东方科技集团股份有限公司 | 一种驱动电路及电子装置 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4538095A (en) * | 1983-06-03 | 1985-08-27 | Nilssen Ole K | Series-resonant electronic ballast circuit |
US4554487A (en) * | 1983-05-17 | 1985-11-19 | Nilssen Ole K | Electronic fluorescent lamp ballast with overload protection |
US4513224A (en) * | 1982-09-22 | 1985-04-23 | Pacific Power Control, Inc. | Fluorescent-lighting-system voltage controller |
US5719474A (en) * | 1996-06-14 | 1998-02-17 | Loral Corporation | Fluorescent lamps with current-mode driver control |
JPH10213789A (ja) | 1997-01-30 | 1998-08-11 | Nec Home Electron Ltd | 液晶表示装置 |
JP3223504B2 (ja) * | 1998-03-31 | 2001-10-29 | 日本電気株式会社 | 昇圧回路 |
US6114814A (en) * | 1998-12-11 | 2000-09-05 | Monolithic Power Systems, Inc. | Apparatus for controlling a discharge lamp in a backlighted display |
KR100576692B1 (ko) * | 2000-07-06 | 2006-05-03 | 엘지전자 주식회사 | 액정표시장치의 백 라이트 램프 구동회로 |
JP2003168293A (ja) * | 2001-11-29 | 2003-06-13 | Matsushita Electric Ind Co Ltd | 半導体記憶装置およびその製造方法 |
KR100481214B1 (ko) * | 2002-02-09 | 2005-04-08 | 엘지.필립스 엘시디 주식회사 | 방전관 램프의 구동장치 및 구동방법과 이를 이용한액정표시장치 |
US6936975B2 (en) * | 2003-04-15 | 2005-08-30 | 02Micro International Limited | Power supply for an LCD panel |
CN100468800C (zh) * | 2004-11-30 | 2009-03-11 | 罗姆股份有限公司 | 开关稳压器的控制电路、电流驱动电路、发光装置及信息终端装置 |
CN2896432Y (zh) * | 2005-12-02 | 2007-05-02 | 咸阳华立电子设备有限公司 | 液晶显示屏冷阴极荧光背光源驱动器 |
CN100468939C (zh) * | 2005-12-16 | 2009-03-11 | 硕颉科技股份有限公司 | 直流/交流转换驱动电路 |
US7868602B2 (en) * | 2006-01-10 | 2011-01-11 | Rohm Co., Ltd. | Power supply device and electronic appliance therewith |
US20070268236A1 (en) * | 2006-05-17 | 2007-11-22 | Neil Morrow | Methods and systems for LCD backlight color control |
KR100867551B1 (ko) * | 2007-05-18 | 2008-11-10 | 삼성전기주식회사 | Led 어레이 구동 장치 |
JP5024789B2 (ja) * | 2007-07-06 | 2012-09-12 | Nltテクノロジー株式会社 | 発光制御回路、発光制御方法、面照明装置及び該面照明装置を備えた液晶表示装置 |
KR101614304B1 (ko) * | 2007-11-16 | 2016-04-21 | 알레그로 마이크로시스템스, 엘엘씨 | 직렬 연결된 발광 다이오드 열들을 구동하는 전자 회로들 |
JP5205974B2 (ja) * | 2008-01-08 | 2013-06-05 | ミツミ電機株式会社 | 直流電源装置、led駆動用電源装置および電源制御用半導体集積回路 |
JP5145103B2 (ja) * | 2008-04-08 | 2013-02-13 | ローム株式会社 | インバータおよびその制御回路、制御方法、ならびにそれらを用いた液晶ディスプレイ装置 |
US7999487B2 (en) * | 2008-06-10 | 2011-08-16 | Allegro Microsystems, Inc. | Electronic circuit for driving a diode load with a predetermined average current |
JP2011244677A (ja) * | 2010-04-23 | 2011-12-01 | Rohm Co Ltd | スイッチング電源の制御回路およびそれを用いたスイッチング電源、発光装置および電子機器 |
CN202189537U (zh) * | 2011-06-16 | 2012-04-11 | 深圳市华星光电技术有限公司 | 用于LED背光驱动电路的Boost升压电路 |
CN202120578U (zh) * | 2011-07-01 | 2012-01-18 | 深圳市华星光电技术有限公司 | Led背光驱动电路 |
-
2012
- 2012-05-04 CN CN201210137473.7A patent/CN102654989B/zh not_active Expired - Fee Related
- 2012-06-20 WO PCT/CN2012/077213 patent/WO2013163839A1/zh active Application Filing
- 2012-06-20 US US13/582,908 patent/US8773033B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US8773033B2 (en) | 2014-07-08 |
WO2013163839A1 (zh) | 2013-11-07 |
CN102654989A (zh) | 2012-09-05 |
US20130293136A1 (en) | 2013-11-07 |
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Legal Events
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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 | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Backlight module drive method and system of liquid crystal display Effective date of registration: 20190426 Granted publication date: 20140611 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Registration number: 2019440020032 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201016 Granted publication date: 20140611 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen China Star Optoelectronics Technology Co.,Ltd. Registration number: 2019440020032 |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 |