FR2872378B1 - Dispositif et procede de commande de lampe d'un dispositif d'affichage a cristal liquide - Google Patents

Dispositif et procede de commande de lampe d'un dispositif d'affichage a cristal liquide

Info

Publication number
FR2872378B1
FR2872378B1 FR0506454A FR0506454A FR2872378B1 FR 2872378 B1 FR2872378 B1 FR 2872378B1 FR 0506454 A FR0506454 A FR 0506454A FR 0506454 A FR0506454 A FR 0506454A FR 2872378 B1 FR2872378 B1 FR 2872378B1
Authority
FR
France
Prior art keywords
liquid crystal
crystal display
lamp control
display device
lamp
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.)
Active
Application number
FR0506454A
Other languages
English (en)
Other versions
FR2872378A1 (fr
Inventor
In Ho Ahn
Pu Jin Kim
Jea Hun Song
Chang Ho Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Display Co Ltd
Original Assignee
LG Philips LCD Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Philips LCD Co Ltd filed Critical LG Philips LCD Co Ltd
Publication of FR2872378A1 publication Critical patent/FR2872378A1/fr
Application granted granted Critical
Publication of FR2872378B1 publication Critical patent/FR2872378B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • H05B41/2824—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage using control circuits for the switching element
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2828—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using control circuits for the switching elements
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/04—Dimming circuit for fluorescent lamps

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
FR0506454A 2004-06-28 2005-06-24 Dispositif et procede de commande de lampe d'un dispositif d'affichage a cristal liquide Active FR2872378B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040049024A KR100993673B1 (ko) 2004-06-28 2004-06-28 액정표시장치의 램프 구동장치 및 방법

Publications (2)

Publication Number Publication Date
FR2872378A1 FR2872378A1 (fr) 2005-12-30
FR2872378B1 true FR2872378B1 (fr) 2010-11-19

Family

ID=36573457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0506454A Active FR2872378B1 (fr) 2004-06-28 2005-06-24 Dispositif et procede de commande de lampe d'un dispositif d'affichage a cristal liquide

Country Status (5)

Country Link
US (2) US7417383B2 (fr)
JP (1) JP4317165B2 (fr)
KR (1) KR100993673B1 (fr)
CN (1) CN100399158C (fr)
FR (1) FR2872378B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101192017B1 (ko) * 2006-06-30 2012-10-16 엘지디스플레이 주식회사 유기 전계 발광 표시 장치 및 이의 제조 방법
JP4949083B2 (ja) * 2007-03-09 2012-06-06 株式会社ピュアロンジャパン フィールドエミッションランプ、バックライトユニットおよび表示板
US8581501B2 (en) * 2009-08-18 2013-11-12 General Electric Company Fluorescent dimming ballast with improved efficiency
KR101025647B1 (ko) * 2009-08-28 2011-03-30 엘에스산전 주식회사 고압 인버터의 제어장치 및 방법
TWI441146B (zh) * 2009-10-16 2014-06-11 Au Optronics Corp 顯示面板驅動電路、顯示面板、與其驅動方法
KR101528961B1 (ko) * 2012-08-30 2015-06-16 엘지디스플레이 주식회사 유기발광 표시장치 및 그 구동방법

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275140B (en) * 1993-02-13 1997-06-18 Kijima Co Ltd Push-pull inverter
US5650672A (en) * 1995-09-25 1997-07-22 Xilinx Inc High-voltage power multiplexor
DE69628739T2 (de) 1995-12-26 2004-04-29 General Electric Co., Fairfield Steuerung und überwachung von dimmbaren vorschaltgeräten mit breitem beleuchtungshub
US6121734A (en) 1998-10-16 2000-09-19 Szabados; Barna Apparatus for dimming a fluorescent lamp with a magnetic ballast
US6114814A (en) * 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
US6259615B1 (en) 1999-07-22 2001-07-10 O2 Micro International Limited High-efficiency adaptive DC/AC converter
TW556145B (en) * 2000-01-11 2003-10-01 Toshiba Corp Flat display apparatus having scan-line driving circuit and its driving method
US6339298B1 (en) * 2000-05-15 2002-01-15 General Electric Company Dimming ballast resonant feedback circuit
US6501234B2 (en) 2001-01-09 2002-12-31 02 Micro International Limited Sequential burst mode activation circuit
JP2003189637A (ja) 2001-12-19 2003-07-04 Matsushita Electric Ind Co Ltd 圧電トランス駆動回路および冷陰極管点灯装置
KR100919717B1 (ko) * 2002-08-19 2009-10-06 페어차일드코리아반도체 주식회사 인버터 구동 장치 및 그 방법
JP4094408B2 (ja) 2002-11-15 2008-06-04 ローム株式会社 直流−交流変換装置、制御回路、制御装置、及びそのコントローラｉｃ
US6924702B2 (en) * 2003-06-17 2005-08-02 Taiwan Semiconductor Manufacturing Co., Ltd. Low supply voltage and self-biased high speed receiver
KR100595313B1 (ko) * 2004-03-15 2006-07-03 엘지.필립스 엘시디 주식회사 백라이트 유닛의 램프 점등장치
US7378896B2 (en) * 2005-05-13 2008-05-27 O2Micro International Ltd. Single pin for multiple functional control purposes

Also Published As

Publication number Publication date
JP2006012846A (ja) 2006-01-12
US20090128051A1 (en) 2009-05-21
FR2872378A1 (fr) 2005-12-30
KR100993673B1 (ko) 2010-11-10
KR20060000285A (ko) 2006-01-06
JP4317165B2 (ja) 2009-08-19
CN1716051A (zh) 2006-01-04
US7852018B2 (en) 2010-12-14
US20060119295A1 (en) 2006-06-08
US7417383B2 (en) 2008-08-26
CN100399158C (zh) 2008-07-02

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