CN1532801A - 用于lcd平板显示器的集成电源 - Google Patents

用于lcd平板显示器的集成电源 Download PDF

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CN1532801A
CN1532801A CNA2003101017228A CN200310101722A CN1532801A CN 1532801 A CN1532801 A CN 1532801A CN A2003101017228 A CNA2003101017228 A CN A2003101017228A CN 200310101722 A CN200310101722 A CN 200310101722A CN 1532801 A CN1532801 A CN 1532801A
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power supply
unit
lcd
flat panel
panel display
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林永霖
柳达
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CONCAVE-CONVEX TECH Inc
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CONCAVE-CONVEX TECH Inc
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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
    • G09G3/36—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
    • 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
    • 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
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation

Abstract

本发明提供一种在单个印刷电路板上实现的集成LCD平板显示器电源。该集成电源包括至少一个直流/交流控制单元、至少一个直流/直流降压型转换器单元和至少一个直流/直流升压型控制单元。每个单元给该LCD平板显示器的相关功能供电。该集成电源还包括一个产生一个时钟信号的振荡器电路，该时钟信号被供给上述每个单元，从而同步上述每个单元的工作。本发明采用的单PCB印刷电路板方式消除了印制电路板之间的布线需要，从而消除了或充分减小了该布线引起的噪声。

Description

用于LCD平板显示器的集成电源
技术领域
本发明涉及一种用于LCD平板显示器的电源，更具体的是涉及一种采用一个涵盖LCD平板显示器所有电源功能的单印刷电路板(PCB)和一个同步LCD平板显示器所有电源功能的单时钟发生器的集成LCD平板显示器电源。
技术背景
图1所示为一种用于LCD平板显示器34的常规电源系统10。在该常规系统10中，要用至少三个独立的PCB来提供不同的电源功能。PCB1(12)包括一个直流/交流转换器18用以产生一个交流信号给一个或多个冷阴极荧光灯(CCFLs)20供电。PCB2(14)包括一个直流/直流开关转换器和线性转换器22来产生直流电源电压供给系统10的各部件，这些部件包括一个微控制器24。例如，微控制器是作为一个控制LCD平板显示器功能的主控制器。第三块PCB，PCB3(16)用来对LCD平板显示器进行图形处理。PCB3通常包括一个图形数据处理器26、一个用来产生直流电源电压供给TFT LCD源极驱动电路30和TFT LCD栅极驱动电路32的直流/直流开关转换器和电荷泵转换器28。
在该常规系统中，三个PCB彼此之间都需要布线。这些布线很容易受来自LCD平板显示器或其它来源的噪声和干扰的影响，从而会影响LCD平板显示器的性能。另外，三个独立的PCB增加了显示器的总成本，同时也增加了用来给LCD平板显示器产生所需电源的元件数量。
发明内容
一方面，本发明给出了一种LCD平板显示器电源，该电源包括一个由至少一个直流/交流控制单元、至少一个直流/直流降压型转换器和至少一个直流/直流升压型控制单元构成的单印刷电路板。上述每个单元给LCD平板显示器的相关功能供电。
另一方面，本发明给出了一种LCD平板显示器电源，该电源包括一个由至少一个直流/交流控制单元、至少一个直流/直流降压型转换器单元和至少一个直流/直流升压型控制单元构成的单印刷电路板。每个单元给LCD平板显示器的相关功能供电。该电源还包括一个产生一个时钟信号的振荡器电路，该时钟信号被送至上述每个单元，从而使得每个单元同步工作。
另一方面，本发明给出了一种LCD平板显示器的电源，该电源包括一个由至少一个直流/交流控制单元、至少一个直流/直流降压型转换器单元、至少一个直流/直流升压型控制单元和LCD栅极源极驱动器电源控制单元构成的单印刷电路板的LCD平板显示器的电源。上述每个单元给LCD平板显示器的相关功能供电。
再一方面，本发明给出了一种集成电路，该集成电路包括一个偏置和参考信号发生器、一个振荡器、至少一个直流/交流逆变器控制器、至少一个直流/直流降压型调节器控制器、一个直流/直流升压型调节器控制器和一个线性调节器，并用来控制LCD平板显示器的电源。
值得本领域的技术人员重视的是，虽然下面的详细描述是基于给出的较佳实施例，但是本发明并不仅仅局限于这些实施例。反而，本发明涉及范围广泛，其范围仅由相应权利要求限定。
本发明的其他特征和优点将在下面的详细描述过程中得到充分体现，详细描述中请参照附图及其相关数据、元件标号。
附图说明
图1所示为用于LCD平板显示器的常规电源系统；和
图2所示为本发明的用于LCD平板显示器的典型电源系统。
具体实施例
图2所示为本发明的一种用于LCD平板显示器的典型电源系统100。在该典型实施例中，一个单集成电路102用来实现LCD平板显示器所有的电源功能。另外，本发明采用一个单独的振荡器来同步LCD平板显示器所有的电源功能。本领域的技术人员将会知道，与常规LCD电源方式相反，采用图2所示的实现方式能节省大量成本、材料和电路板空间。另外，图2中的集成电路(IC)102可以集成在一个单PCB印刷电路板上，因此，采用图2的实现方式就不易受到由于常规方式中PCB之间的布线引起的噪声影响。
在典型系统100中，IC102用来给LCD平板显示器提供电源需求。一个直流/交流逆变器控制器108作为一个常规和/或专用逆变器系统，产生控制信号给开关网络120，从而给一个或多个CCFL灯管20供电。该逆变器控制器包括一个逆变器控制器，例如O2Micro国际有限公司生产的OZ960、OZ961、OZ970、OZ969A、OZ971、OZ9RR，和/或其它本领域公知的包括全桥式、半桥式、推挽式和/或其它本领域公知的开关网络电路的逆变器控制器拓扑结构。
一个第一直流/直流降压型控制器110用一种本领域公知的方式来控制一个降压型开关网络(开关Q1和Q2)，从而产生一个电源(例如，5伏)，该电源可以给图2所示与其相连的微处理器供电。一个第二降压型控制器112用来控制一个降压型开关网络(开关Q3和Q4)，从而产生一个用于LCD行列驱动器(图中未示出)的电源(例如，3.3伏)。降压型控制器110和112为公知的电路，也可以是定制和/或标准部件。一个升压型控制器114用来控制一个包括开关Q5的升压型电路，从而产生一个上升步进电源电压(例如，10伏)。LCD电源开关驱动器LDO_POS 116和LDO_NEG 118用来给LCD栅极源极驱动器供电，例如，分别为+20V和-7V。
本发明中，有优势的是需要时钟的电源单元，例如电源单元108-114，可以被同步。一个振荡器电路104作为每个控制器单元108-114的时钟。该振荡器电路产生一个时钟脉冲给每个电源控制单元108-114。另外，每个电源控制单元108-118可以通过一个通常与电源单元相连的偏置参考信号发生器电路106得到一个共偏置信号和参考信号。因此，该时钟、偏置和参考信号能供给IC102的各个电源单元，而不需要图1所示中的额外PCB之间的布线。
因此，本发明显然给出了一种用于LCD平板显示器的集成电源系统。本发明还给出了一种可以在一块单PCB印刷电路板实现上的用于LCD平板显示器的集成电源系统。本领域的技术人员将会知道本发明的许多改进。例如，图2所示的IC102也可以由图2所示的IC102中的多个分立的元件实现，并且所有这些选定的元件都可以在一块PCB上实现。其它对本发明的改进对于本领域的技术人员都是显而易见的，所有的这些改进都认为是在本发明的精神之内，都受限于本发明的权利要求。

Claims (11)

1.一种LCD平板显示器电源，其特征在于：所述电源包括一个由至少一个直流/交流转换器单元、至少一个直流/直流降压型转换器单元和至少一个直流/直流升压型转换器单元构成的单印刷电路板，每个所述单元给所述LCD的相关功能供电。
2.根据权利要求1所述的LCD平板显示器电源，其特征在于：所述电源还包括LCD栅极驱动器和源极驱动器电源控制单元。
3.根据权利要求1所述的LCD平板显示器电源，其特征在于：所述电源还包括一个产生一个时钟信号的振荡器电路，所述时钟信号供给每个所述单元，从而同步每个所述单元的工作。
4.根据权利要求2所述的LCD平板显示器电源，其特征在于：所述电源还包括一个给每个所述单元提供一个共偏置信号和参考信号的偏置信号和参考信号发生器电路。
5.一种LCD平板显示器电源，其特征在于：所述电源包括一个由至少一个直流/交流转换器单元、至少一个直流/直流降压型转换器单元和至少一个直流/直流升压型转换器单元构成的单印刷电路板，每个所述单元给所述LCD的相关功能供电；还包括一个产生一个时钟信号的振荡器电路，所述时钟信号供给每个所述单元，从而同步每个所述单元的工作。
6.根据权利要求5所述的LCD平板显示器电源，其特征在于：所述电源还包括LCD栅极驱动器和源极驱动器电源控制单元。
7.根据权利要求6所述的LCD平板显示器电源，其特征在于：所述电源还包括一个给每个所述单元提供一个共偏置信号和参考信号的偏置信号和参考信号发生器电路。
8.一种LCD平板显示器电源，其特征在于：所述电源包括一个由至少一个直流/交流转换器单元、至少一个直流/直流降压型转换器单元、至少一个直流/直流升压型转换器单元和LCD栅极驱动器和源极驱动器电源控制单元构成的单印刷电路板，每个所述单元给所述LCD的相关功能供电。
9.根据权利要求8所述的LCD平板显示器电源，其特征在于：所述电源还包括一个产生一个时钟信号的振荡器电路，所述时钟信号供给所述至少一个直流/交流控制单元、至少一个直流/直流降压型转换器单元和至少一个直流/直流升压型控制单元，从而同步每个所述单元的工作。
10.根据权利要求8所述的LCD平板显示器电源，其特征在于：所述电源还包括一个给每个所述单元提供一个共偏置信号和参考信号的偏置信号和参考信号发生器电路。
11.一种控制给LCD平板显示器供电的集成电路，其特征在于：所述电路包括一个偏置和参考信号发生器、一个振荡器、一个直流/交流逆变器控制器、一个直流/直流降压型调节器控制器、一个直流/直流升压型调节器控制器和一个线性调节器。
CNA2003101017228A 2003-03-25 2003-10-21 用于lcd平板显示器的集成电源 Pending CN1532801A (zh)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577097A (zh) * 2008-05-08 2009-11-11 奇美电子股份有限公司 液晶显示装置模块及其电压产生电路
US7889190B2 (en) 2005-06-17 2011-02-15 Lg Display Co., Ltd. Apparatus for supplying power source
CN1964591B (zh) * 2005-11-08 2012-01-11 美国芯源系统股份有限公司 检测灯管开路或短路的方法及电路
CN101944320B (zh) * 2006-08-14 2013-04-03 奇美电子股份有限公司 应用于平面显示装置的逆变器电路板结构
CN103365463A (zh) * 2012-04-03 2013-10-23 凹凸电子（武汉）有限公司 控制触屏的方法、控制器及显示系统
WO2014101077A1 (zh) * 2012-12-25 2014-07-03 深圳市华星光电技术有限公司 Lcd驱动电路的dc/dc模块

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6114814A (en) * 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
TWI267057B (en) * 2004-08-31 2006-11-21 Au Optronics Corp Flat panel display with built-in DC-DC converters
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
CN1898997A (zh) * 2003-11-03 2007-01-17 美国芯源系统股份有限公司 具有用于驱动器控制的集成光敏元件的光源驱动器
US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
US7112929B2 (en) 2004-04-01 2006-09-26 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
TWI281772B (en) * 2004-05-04 2007-05-21 Beyond Innovation Tech Co Ltd Synchronous operation device
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
TWI306725B (en) * 2004-08-20 2009-02-21 Monolithic Power Systems Inc Minimizing bond wire power losses in integrated circuit full bridge ccfl drivers
TWI318084B (en) 2004-10-13 2009-12-01 Monolithic Power Systems Inc Methods and protection schemes for driving discharge lamps in large panel applications
DE102004061341A1 (de) * 2004-12-20 2006-07-06 Puls Gmbh Stromversorgung
TWI345430B (en) * 2005-01-19 2011-07-11 Monolithic Power Systems Inc Method and apparatus for dc to ac power conversion for driving discharge lamps
US7439685B2 (en) * 2005-07-06 2008-10-21 Monolithic Power Systems, Inc. Current balancing technique with magnetic integration for fluorescent lamps
US7420829B2 (en) 2005-08-25 2008-09-02 Monolithic Power Systems, Inc. Hybrid control for discharge lamps
US7291991B2 (en) * 2005-10-13 2007-11-06 Monolithic Power Systems, Inc. Matrix inverter for driving multiple discharge lamps
CN1953631A (zh) * 2005-10-17 2007-04-25 美国芯源系统股份有限公司 一种适合冷阴极荧光灯背光应用的直流/交流电源装置
US7394203B2 (en) 2005-12-15 2008-07-01 Monolithic Power Systems, Inc. Method and system for open lamp protection
KR20070066633A (ko) * 2005-12-22 2007-06-27 삼성전자주식회사 구동 장치 및 이를 포함하는 표시 장치
GB2454389B (en) * 2006-01-13 2009-08-26 Enecsys Ltd Power conditioning unit
US7619371B2 (en) * 2006-04-11 2009-11-17 Monolithic Power Systems, Inc. Inverter for driving backlight devices in a large LCD panel
US7804254B2 (en) * 2006-04-19 2010-09-28 Monolithic Power Systems, Inc. Method and circuit for short-circuit and over-current protection in a discharge lamp system
US7420337B2 (en) * 2006-05-31 2008-09-02 Monolithic Power Systems, Inc. System and method for open lamp protection
US20070279350A1 (en) * 2006-06-02 2007-12-06 Kent Displays Incorporated Method and apparatus for driving bistable liquid crystal display
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
NZ550043A (en) * 2006-09-21 2008-01-31 Eaton Power Quality Company A switched mode power supply and method of production
KR101340056B1 (ko) * 2006-12-07 2013-12-11 삼성디스플레이 주식회사 직류/직류 컨버터 및 액정표시장치
CN101453818B (zh) * 2007-11-29 2014-03-19 杭州茂力半导体技术有限公司 放电灯的电路保护和调节装置
US8093839B2 (en) 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
US9058761B2 (en) 2009-06-30 2015-06-16 Silicon Laboratories Inc. System and method for LCD loop control
US8350488B2 (en) * 2009-06-30 2013-01-08 Microsemi Corporation Integrated backlight control system
US8913051B2 (en) * 2009-06-30 2014-12-16 Silicon Laboratories Inc. LCD controller with oscillator prebias control
CN102843046B (zh) * 2012-05-23 2014-12-17 深圳市航嘉驰源电气股份有限公司 Pos机电源及pos机
US9324291B2 (en) 2012-08-13 2016-04-26 Yinhung Chen LCD device control system and LCD device
CN102789773B (zh) * 2012-08-13 2015-09-09 深圳市华星光电技术有限公司 一种液晶显示装置的控制系统和液晶显示装置
CN202838920U (zh) * 2012-08-13 2013-03-27 深圳市华星光电技术有限公司 一种液晶显示装置的控制系统及液晶显示装置
US8994219B2 (en) * 2012-12-25 2015-03-31 Shenzhen China Star Optoelectronics Technology Co., Ltd DC/DC module of LCD driving circuit

Family Cites Families (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US559688A (en) * 1896-05-05 dixon
US5744915A (en) 1978-03-20 1998-04-28 Nilssen; Ole K. Electronic ballast for instant-start lamps
US5422546A (en) 1978-03-20 1995-06-06 Nilssen; Ole K. Dimmable parallel-resonant electric ballast
US5481160A (en) 1978-03-20 1996-01-02 Nilssen; Ole K. Electronic ballast with FET bridge inverter
US4461980A (en) 1982-08-25 1984-07-24 Nilssen Ole K Protection circuit for series resonant electronic ballasts
US4535399A (en) 1983-06-03 1985-08-13 National Semiconductor Corporation Regulated switched power circuit with resonant load
US4541041A (en) 1983-08-22 1985-09-10 General Electric Company Full load to no-load control for a voltage fed resonant inverter
DE3667367D1 (de) 1985-06-04 1990-01-11 Thorn Emi Lighting Nz Ltd Verbessertes schaltnetzteil.
US4672528A (en) 1986-05-27 1987-06-09 General Electric Company Resonant inverter with improved control
US4864483A (en) 1986-09-25 1989-09-05 Wisconsin Alumni Research Foundation Static power conversion method and apparatus having essentially zero switching losses and clamped voltage levels
JPH07118915B2 (ja) 1987-01-30 1995-12-18 株式会社日立メデイコ 共振型ｄｃ−ｄｃコンバ−タ
US4727469A (en) 1987-03-23 1988-02-23 Reliance Comm/Tec Corporation Control for a series resonant power converter
US4833584A (en) 1987-10-16 1989-05-23 Wisconsin Alumni Research Foundation Quasi-resonant current mode static power conversion method and apparatus
ATE88304T1 (de) 1987-10-29 1993-04-15 Rifala Pty Ltd Umwandler mit hohem wirkungsgrad.
US5012058A (en) 1987-12-28 1991-04-30 General Electric Company Magnetron with full wave bridge inverter
US4912622A (en) 1988-03-07 1990-03-27 General Electric Company Gate driver for a full-bridge lossless switching device
US4860189A (en) 1988-03-21 1989-08-22 International Business Machines Corp. Full bridge power converter circuit
US4814962A (en) 1988-05-27 1989-03-21 American Telephone And Telegraph Company, At&T Bell Laboratories Zero voltage switching half bridge resonant converter
US4952849A (en) 1988-07-15 1990-08-28 North American Philips Corporation Fluorescent lamp controllers
JPH0636617Y2 (ja) * 1988-09-03 1994-09-21 岩崎通信機株式会社 筒形外装ケース
CA1325658C (en) 1988-09-16 1993-12-28 Kosuke Harada Switching power source means
US4855888A (en) 1988-10-19 1989-08-08 Unisys Corporation Constant frequency resonant power converter with zero voltage switching
FR2649277B1 (fr) 1989-06-30 1996-05-31 Thomson Csf Procede et dispositif de gradation de lumiere pour lampe fluorescente d'eclairage arriere d'ecran a cristaux liquides
US4935857A (en) 1989-08-22 1990-06-19 Sundstrand Corporation Transistor conduction-angle control for a series-parallel resonant converter
US5017800A (en) 1989-09-29 1991-05-21 Wisconsin Alumni Research Foundation AC to DC to AC power conversion apparatus with few active switches and input and output control
US5027264A (en) 1989-09-29 1991-06-25 Wisconsin Alumni Research Foundation Power conversion apparatus for DC/DC conversion using dual active bridges
US4953068A (en) 1989-11-08 1990-08-28 Unisys Corporation Full bridge power converter with multiple zero voltage resonant transition switching
US4992919A (en) 1989-12-29 1991-02-12 Lee Chu Quon Parallel resonant converter with zero voltage switching
US5198969A (en) 1990-07-13 1993-03-30 Design Automation, Inc. Soft-switching full-bridge dc/dc converting
US5231563A (en) 1990-09-07 1993-07-27 Itt Corporation Square wave converter having an improved zero voltage switching operation
US5132888A (en) 1991-01-07 1992-07-21 Unisys Corporation Interleaved bridge converter
US5291382A (en) 1991-04-10 1994-03-01 Lambda Electronics Inc. Pulse width modulated DC/DC converter with reduced ripple current coponent stress and zero voltage switching capability
US5132889A (en) 1991-05-15 1992-07-21 Ibm Corporation Resonant-transition DC-to-DC converter
US5208740A (en) 1991-05-30 1993-05-04 The Texas A & M University System Inverse dual converter for high-power applications
US5235501A (en) 1991-07-19 1993-08-10 The University Of Toledo High efficiency voltage converter
JPH05203749A (ja) * 1991-08-28 1993-08-10 Siemens Ag 多重シンチレーション事象の位置確認方法
US5157592A (en) 1991-10-15 1992-10-20 International Business Machines Corporation DC-DC converter with adaptive zero-voltage switching
US5285372A (en) 1991-10-23 1994-02-08 Henkel Corporation Power supply for an ozone generator with a bridge inverter
US5384516A (en) 1991-11-06 1995-01-24 Hitachi, Ltd. Information processing apparatus including a control circuit for controlling a liquid crystal display illumination based on whether illuminatio power is being supplied from an AC power source or from a battery
US5448467A (en) 1992-04-13 1995-09-05 Ferreira; Jan A. Electrical power converter circuit
US5305191A (en) 1992-04-20 1994-04-19 At&T Bell Laboratories Drive circuit for zero-voltage switching power converter with controlled power switch turn-on
US5268830A (en) 1992-04-20 1993-12-07 At&T Bell Laboratories Drive circuit for power switches of a zero-voltage switching power converter
US5430641A (en) 1992-04-27 1995-07-04 Dell Usa, L.P. Synchronously switching inverter and regulator
US5412557A (en) 1992-10-14 1995-05-02 Electronic Power Conditioning, Inc. Unipolar series resonant converter
US5448155A (en) 1992-10-23 1995-09-05 International Power Devices, Inc. Regulated power supply using multiple load sensing
US5402329A (en) 1992-12-09 1995-03-28 Ernest H. Wittenbreder, Jr. Zero voltage switching pulse width modulated power converters
US5363020A (en) 1993-02-05 1994-11-08 Systems And Service International, Inc. Electronic power controller
JP3324819B2 (ja) * 1993-03-03 2002-09-17 三菱電機株式会社 半導体集積回路装置
US5420779A (en) 1993-03-04 1995-05-30 Dell Usa, L.P. Inverter current load detection and disable circuit
CA2096559C (en) 1993-05-19 1999-03-02 Daniel Pringle Resonant unity power factor converter
KR960010713B1 (ko) 1993-08-17 1996-08-07 삼성전자 주식회사 공진형 컨버터의 영전압 스위칭 제어장치 및 이를 이용한 전자식 안정기
US5418703A (en) 1993-08-31 1995-05-23 International Business Machines Corp. DC-DC converter with reset control for enhanced zero-volt switching
US5510974A (en) 1993-12-28 1996-04-23 Philips Electronics North America Corporation High frequency push-pull converter with input power factor correction
AUPM364394A0 (en) 1994-02-01 1994-02-24 Unisearch Limited Improved power converter with soft switching
DE4413163A1 (de) 1994-04-15 1995-10-19 Philips Patentverwaltung Schaltungsanordnung mit einem Wechselrichter
EP0680245B1 (fr) 1994-04-29 2000-08-30 André Bonnet Ensemble comprenant un convertisseur statique à interrupteur commandé et un circuit de commande
US5917722A (en) 1994-05-11 1999-06-29 B&W Loudspeakers Ltd. Controlled commutator circuit
CH688952B5 (fr) 1994-05-26 1998-12-31 Ebauchesfabrik Eta Ag Circuit d'alimentation pour une feuille électroluminescente.
CA2124370C (en) 1994-05-26 1998-09-29 Ivan Meszlenyi Self oscillating dc to dc converter
JP3027298B2 (ja) 1994-05-31 2000-03-27 シャープ株式会社 バックライト制御機能付き液晶表示装置
US5514921A (en) 1994-06-27 1996-05-07 General Electric Company Lossless gate drivers for high-frequency PWM switching cells
US5615093A (en) 1994-08-05 1997-03-25 Linfinity Microelectronics Current synchronous zero voltage switching resonant topology
KR0137917B1 (ko) 1994-10-28 1998-05-15 김광호 액정표시소자의 후면광원 구동회로
JP2757810B2 (ja) 1995-03-08 1998-05-25 日本電気株式会社 電源装置
FR2733095B1 (fr) 1995-04-11 1997-05-09 Alcatel Converters Dispositif a inductance variable et utilisation de ce dispositif pour la realisation d'une source de courant pour cellule de commutation a tension nulle
US5694007A (en) 1995-04-19 1997-12-02 Systems And Services International, Inc. Discharge lamp lighting system for avoiding high in-rush current
KR0148053B1 (ko) * 1995-05-12 1998-09-15 김광호 액정 표시 소자의 후면 광원 구동 제어 장치 및 그 방법
US5638260A (en) 1995-05-19 1997-06-10 Electronic Measurements, Inc. Parallel resonant capacitor charging power supply operating above the resonant frequency
US5834889A (en) 1995-09-22 1998-11-10 Gl Displays, Inc. Cold cathode fluorescent display
JP2914251B2 (ja) 1995-10-31 1999-06-28 日本電気株式会社 インバータ装置
KR0177873B1 (ko) 1995-12-02 1999-05-15 변승봉 순환전류 프리형 고주파 소프트 스위칭FB(Full Bridge)DC-DC컨버터
US5875103A (en) 1995-12-22 1999-02-23 Electronic Measurements, Inc. Full range soft-switching DC-DC converter
EP0818129B1 (en) 1995-12-26 2003-06-18 General Electric Company Control and protection of dimmable electronic fluorescent lamp ballast with wide input voltage range and wide dimming range
IT1289479B1 (it) 1996-01-26 1998-10-15 Schlafhorst & Co W Disposizione circuitale di trasformazione di tensione per la alimentazione energetica di un utilizzatore elettrico di elevata
US5684683A (en) 1996-02-09 1997-11-04 Wisconsin Alumni Research Foundation DC-to-DC power conversion with high current output
US5669238A (en) 1996-03-26 1997-09-23 Phillips Petroleum Company Heat exchanger controls for low temperature fluids
US5781419A (en) 1996-04-12 1998-07-14 Soft Switching Technologies, Inc. Soft switching DC-to-DC converter with coupled inductors
US5619402A (en) 1996-04-16 1997-04-08 O2 Micro, Inc. Higher-efficiency cold-cathode fluorescent lamp power supply
US5784266A (en) 1996-06-14 1998-07-21 Virginia Power Technologies, Inc Single magnetic low loss high frequency converter
US5719474A (en) 1996-06-14 1998-02-17 Loral Corporation Fluorescent lamps with current-mode driver control
TW313689B (en) * 1996-06-26 1997-08-21 United Microelectronics Corp Junction bipolar modulated resistor device
US5736842A (en) 1996-07-11 1998-04-07 Delta Electronics, Inc. Technique for reducing rectifier reverse-recovery-related losses in high-voltage high power converters
US5715155A (en) 1996-10-28 1998-02-03 Norax Canada Inc. Resonant switching power supply circuit
KR100199506B1 (ko) 1996-10-29 1999-06-15 윤문수 출력전류의 리플 저감이 가능한 풀 브릿지 디씨이/디씨이컨버터의 영전압/영전류 스위칭을 위한 회로
US5781418A (en) 1996-12-23 1998-07-14 Philips Electronics North America Corporation Switching scheme for power supply having a voltage-fed inverter
US5894412A (en) 1996-12-31 1999-04-13 Compaq Computer Corp System with open-loop DC-DC converter stage
US5932976A (en) 1997-01-14 1999-08-03 Matsushita Electric Works R&D Laboratory, Inc. Discharge lamp driving
US5748457A (en) 1997-01-24 1998-05-05 Poon; Franki Ngai Kit Family of zero voltage switching DC to DC converters
US5774346A (en) 1997-01-24 1998-06-30 Poon; Franki Ngai Kit Family of zero voltage switching DC to DC converters with coupled output inductor
US5880940A (en) 1997-02-05 1999-03-09 Computer Products, Inc. Low cost high efficiency power converter
US6011360A (en) 1997-02-13 2000-01-04 Philips Electronics North America Corporation High efficiency dimmable cold cathode fluorescent lamp ballast
US5764494A (en) 1997-03-13 1998-06-09 Lockheed Martin Corporation Saturable reactor and converter for use thereof
US5923129A (en) 1997-03-14 1999-07-13 Linfinity Microelectronics Apparatus and method for starting a fluorescent lamp
US5930121A (en) 1997-03-14 1999-07-27 Linfinity Microelectronics Direct drive backlight system
JP3216572B2 (ja) 1997-05-27 2001-10-09 日本電気株式会社 圧電トランスの駆動回路
US5939830A (en) 1997-12-24 1999-08-17 Honeywell Inc. Method and apparatus for dimming a lamp in a backlight of a liquid crystal display
US6051940A (en) 1998-04-30 2000-04-18 Magnetek, Inc. Safety control circuit for detecting the removal of lamps from a ballast and reducing the through-lamp leakage currents
JP3061043B2 (ja) 1998-12-11 2000-07-10 日本電気株式会社 電源回路
US6114814A (en) 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
BR9806434A (pt) * 1998-12-29 2000-08-15 Forjas Taurus Sa Sinalizador de cartuchos na câmara para pistolas
FR2789163B1 (fr) * 1999-02-02 2001-04-20 Raymond Chardine Enceinte et installation de sechage de dejections d'animaux
US6259615B1 (en) 1999-07-22 2001-07-10 O2 Micro International Limited High-efficiency adaptive DC/AC converter
US6545862B1 (en) * 2000-05-25 2003-04-08 Palm, Inc. Method and system for an interchangeable modular display screen for a portable computing device
US6501234B2 (en) 2001-01-09 2002-12-31 02 Micro International Limited Sequential burst mode activation circuit
US6559606B1 (en) 2001-10-23 2003-05-06 O2Micro International Limited Lamp driving topology

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7889190B2 (en) 2005-06-17 2011-02-15 Lg Display Co., Ltd. Apparatus for supplying power source
CN1881760B (zh) * 2005-06-17 2012-05-23 乐金显示有限公司 用来提供电源的设备
CN1964591B (zh) * 2005-11-08 2012-01-11 美国芯源系统股份有限公司 检测灯管开路或短路的方法及电路
CN101944320B (zh) * 2006-08-14 2013-04-03 奇美电子股份有限公司 应用于平面显示装置的逆变器电路板结构
CN101577097A (zh) * 2008-05-08 2009-11-11 奇美电子股份有限公司 液晶显示装置模块及其电压产生电路
CN103365463A (zh) * 2012-04-03 2013-10-23 凹凸电子（武汉）有限公司 控制触屏的方法、控制器及显示系统
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WO2014101077A1 (zh) * 2012-12-25 2014-07-03 深圳市华星光电技术有限公司 Lcd驱动电路的dc/dc模块

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