DE69807751T2 - Verfahren und vorrichtung zum dimmen einer leuchtstofflampe in einer lcd-anzeigen-rückbeleuchtung - Google Patents

Verfahren und vorrichtung zum dimmen einer leuchtstofflampe in einer lcd-anzeigen-rückbeleuchtung

Info

Publication number
DE69807751T2
DE69807751T2 DE69807751T DE69807751T DE69807751T2 DE 69807751 T2 DE69807751 T2 DE 69807751T2 DE 69807751 T DE69807751 T DE 69807751T DE 69807751 T DE69807751 T DE 69807751T DE 69807751 T2 DE69807751 T2 DE 69807751T2
Authority
DE
Germany
Prior art keywords
dimming
fluorescent lamp
rear lighting
lcd rear
lcd
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
Application number
DE69807751T
Other languages
English (en)
Other versions
DE69807751D1 (de
Inventor
R Praiswater
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of DE69807751D1 publication Critical patent/DE69807751D1/de
Application granted granted Critical
Publication of DE69807751T2 publication Critical patent/DE69807751T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
DE69807751T 1997-12-24 1998-11-20 Verfahren und vorrichtung zum dimmen einer leuchtstofflampe in einer lcd-anzeigen-rückbeleuchtung Expired - Fee Related DE69807751T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/998,110 US5939830A (en) 1997-12-24 1997-12-24 Method and apparatus for dimming a lamp in a backlight of a liquid crystal display
PCT/US1998/024701 WO1999034651A1 (en) 1997-12-24 1998-11-20 Method and apparatus for dimming a lamp in a backlight of a liquid crystal display

Publications (2)

Publication Number Publication Date
DE69807751D1 DE69807751D1 (de) 2002-10-10
DE69807751T2 true DE69807751T2 (de) 2003-06-05

Family

ID=25544774

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69807751T Expired - Fee Related DE69807751T2 (de) 1997-12-24 1998-11-20 Verfahren und vorrichtung zum dimmen einer leuchtstofflampe in einer lcd-anzeigen-rückbeleuchtung

Country Status (9)

Country Link
US (1) US5939830A (de)
EP (1) EP1044588B1 (de)
JP (1) JP4249900B2 (de)
KR (1) KR100580850B1 (de)
DE (1) DE69807751T2 (de)
DK (1) DK1044588T3 (de)
IL (2) IL136975A0 (de)
TW (1) TW431122B (de)
WO (1) WO1999034651A1 (de)

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000069332A (ja) * 1998-08-17 2000-03-03 Asahi Optical Co Ltd 液晶モニタ照明装置及び該液晶モニタ照明装置を用いた液晶モニタ付きデジタルカメラ
US6900600B2 (en) 1998-12-11 2005-05-31 Monolithic Power Systems, Inc. Method for starting a discharge lamp using high energy initial pulse
US6114814A (en) * 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
US6946806B1 (en) 2000-06-22 2005-09-20 Microsemi Corporation Method and apparatus for controlling minimum brightness of a fluorescent lamp
US6804129B2 (en) 1999-07-22 2004-10-12 02 Micro International Limited High-efficiency adaptive DC/AC converter
US6259615B1 (en) 1999-07-22 2001-07-10 O2 Micro International Limited High-efficiency adaptive DC/AC converter
US7049761B2 (en) 2000-02-11 2006-05-23 Altair Engineering, Inc. Light tube and power supply circuit
US6531831B2 (en) 2000-05-12 2003-03-11 O2Micro International Limited Integrated circuit for lamp heating and dimming control
US6570347B2 (en) 2000-06-01 2003-05-27 Everbrite, Inc. Gas-discharge lamp having brightness control
US6307765B1 (en) 2000-06-22 2001-10-23 Linfinity Microelectronics Method and apparatus for controlling minimum brightness of a fluorescent lamp
JP2002123226A (ja) * 2000-10-12 2002-04-26 Hitachi Ltd 液晶表示装置
US6784867B1 (en) * 2000-11-16 2004-08-31 Koninklijke Philips Electronics N.V. Voltage-fed push LLC resonant LCD backlighting inverter circuit
US6356035B1 (en) * 2000-11-27 2002-03-12 Philips Electronics North America Corporation Deep PWM dimmable voltage-fed resonant push-pull inverter circuit for LCD backlighting with a coupled inductor
US6501234B2 (en) 2001-01-09 2002-12-31 02 Micro International Limited Sequential burst mode activation circuit
US6570344B2 (en) 2001-05-07 2003-05-27 O2Micro International Limited Lamp grounding and leakage current detection system
US6741061B2 (en) * 2001-05-24 2004-05-25 Comair Rotron, Inc. Efficient stator
US6670781B2 (en) 2001-07-27 2003-12-30 Visteon Global Technologies, Inc. Cold cathode fluorescent lamp low dimming antiflicker control circuit
US7064740B2 (en) * 2001-11-09 2006-06-20 Sharp Laboratories Of America, Inc. Backlit display with improved dynamic range
US6583568B1 (en) * 2001-12-19 2003-06-24 Northrop Grumman Method and apparatus for dimming high-intensity fluorescent lamps
KR100825099B1 (ko) * 2001-12-20 2008-04-25 삼성전자주식회사 표시 장치용 백라이트 장치
KR100449913B1 (ko) * 2002-01-24 2004-09-22 대한민국 액정 디스플레이의 백라이트용 멀티램프 점등장치
US6841947B2 (en) * 2002-05-14 2005-01-11 Garmin At, Inc. Systems and methods for controlling brightness of an avionics display
US6873322B2 (en) * 2002-06-07 2005-03-29 02Micro International Limited Adaptive LCD power supply circuit
US6949912B2 (en) 2002-06-20 2005-09-27 02Micro International Limited Enabling circuit for avoiding negative voltage transients
US6756769B2 (en) 2002-06-20 2004-06-29 O2Micro International Limited Enabling circuit for avoiding negative voltage transients
KR100892584B1 (ko) * 2002-08-26 2009-04-08 삼성전자주식회사 전원공급장치와 이를 갖는 백라이트 어셈블리 및 액정표시 장치
US6778415B2 (en) * 2003-01-22 2004-08-17 O2Micro, Inc. Controller electrical power circuit supplying energy to a display device
US7230613B1 (en) * 2003-03-03 2007-06-12 Rockwell Collins, Inc. Display driver supporting a dimming mode
US7292221B2 (en) 2003-03-20 2007-11-06 Lg Electronics Inc. Apparatus and method for controlling inverter pulse width modulation frequency in LCD in portable computer
US7057611B2 (en) * 2003-03-25 2006-06-06 02Micro International Limited Integrated power supply for an LCD panel
US6936975B2 (en) 2003-04-15 2005-08-30 02Micro International Limited Power supply for an LCD panel
US8144106B2 (en) 2003-04-24 2012-03-27 Samsung Electronics Co., Ltd. Liquid crystal display and driving method thereof
KR100866791B1 (ko) * 2003-04-25 2008-11-04 삼성전자주식회사 액정 판넬 디스플레이 장치 및 그 구동 방법
JP3696604B2 (ja) 2003-05-23 2005-09-21 ローム株式会社 直流−交流変換装置、及び交流電力供給方法
US6897698B1 (en) 2003-05-30 2005-05-24 O2Micro International Limited Phase shifting and PWM driving circuits and methods
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
US6919694B2 (en) 2003-10-02 2005-07-19 Monolithic Power Systems, Inc. Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship
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
US7602369B2 (en) 2004-05-04 2009-10-13 Sharp Laboratories Of America, Inc. Liquid crystal display with colored backlight
US8395577B2 (en) 2004-05-04 2013-03-12 Sharp Laboratories Of America, Inc. Liquid crystal display with illumination control
US7872631B2 (en) 2004-05-04 2011-01-18 Sharp Laboratories Of America, Inc. Liquid crystal display with temporal black point
US7777714B2 (en) 2004-05-04 2010-08-17 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive width
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
US7898519B2 (en) 2005-02-17 2011-03-01 Sharp Laboratories Of America, Inc. Method for overdriving a backlit display
US7133298B2 (en) * 2004-10-25 2006-11-07 Texas Instruments Incorporated High frequency voltage regulating transformer based converter
JP4884665B2 (ja) 2004-11-12 2012-02-29 ローム株式会社 直流−交流変換装置、そのコントローラｉｃ、及び直流−交流変換装置の並行運転システム
US8050512B2 (en) 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US8050511B2 (en) 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US7262561B2 (en) * 2004-12-13 2007-08-28 Zippy Technology Corp. Method for controlling power supply through multiple modulation modes
TW200630668A (en) * 2005-02-16 2006-09-01 Delta Optoelectronics Inc Cold cathode flat fluorescent light (CCFFL) and the driving method
FR2882870B1 (fr) * 2005-03-01 2007-08-10 Thales Sa Oscillateur de royer a electronique de decharge
KR100675224B1 (ko) * 2005-05-09 2007-01-26 삼성전기주식회사 백라이트용 외부전극 형광램프 인버터의 구동방법
US8121401B2 (en) 2006-01-24 2012-02-21 Sharp Labortories of America, Inc. Method for reducing enhancement of artifacts and noise in image color enhancement
US9143657B2 (en) 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
KR100791841B1 (ko) * 2006-03-10 2008-01-07 삼성전자주식회사 프레임 신호에 동기된 백라이트 신호를 발생하기 위한장치와 방법
US20090243506A1 (en) * 2006-04-06 2009-10-01 Koninklijke Philips Electronics N.V. Method and device for driving a lamp
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
US8941580B2 (en) 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
US8044558B2 (en) * 2006-12-13 2011-10-25 Honeywell International Inc. Dimmable high pressure arc lamp apparatus and methods
JP2009252410A (ja) * 2008-04-02 2009-10-29 Ushio Inc 放電ランプ装置
KR100950682B1 (ko) * 2008-07-24 2010-03-31 전자부품연구원 표시 장치 및 방법
TWI403216B (zh) * 2008-10-14 2013-07-21 Chunghwa Picture Tubes Ltd 光源亮度控制電路及亮度控制方法
US7938562B2 (en) 2008-10-24 2011-05-10 Altair Engineering, Inc. Lighting including integral communication apparatus
US8093839B2 (en) 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
CN101854769B (zh) * 2009-04-02 2012-11-28 华映视讯（吴江）有限公司 光源亮度控制电路及亮度控制方法
FR2976150B1 (fr) 2011-06-01 2013-06-14 Thales Sa Dispositif de commande de diodes electroluminescentes a tres grande dynamique de luminance pour ecran de visualisation
WO2015148998A1 (en) * 2014-03-27 2015-10-01 Integrated Device Technology, Inc. Wireless power system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1177111A (en) * 1982-02-17 1984-10-30 Carl Schweer Lamp dimmer
US4682080A (en) * 1984-08-17 1987-07-21 Hitachi, Ltd. Discharge lamp operating device
US4998045A (en) * 1988-12-06 1991-03-05 Honeywell Inc. Fluorescent lamp dimmer
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
US5027034A (en) * 1989-10-12 1991-06-25 Honeywell Inc. Alternating cathode florescent lamp dimmer
GB2244608A (en) * 1990-04-23 1991-12-04 P I Electronics Pte Ltd High frequency drive circuit for a fluorescent lamp
US5491387A (en) * 1992-06-29 1996-02-13 Kansei Corporation Discharge lamp lighting circuit for increasing electric power fed in initial lighting of the lamp
US5428265A (en) * 1994-02-28 1995-06-27 Honeywell, Inc. Processor controlled fluorescent lamp dimmer for aircraft liquid crystal display instruments

Also Published As

Publication number Publication date
JP2002500427A (ja) 2002-01-08
DK1044588T3 (da) 2002-12-02
DE69807751D1 (de) 2002-10-10
KR20010033591A (ko) 2001-04-25
TW431122B (en) 2001-04-21
IL136975A (en) 2006-07-05
IL136975A0 (en) 2001-06-14
EP1044588B1 (de) 2002-09-04
WO1999034651A1 (en) 1999-07-08
JP4249900B2 (ja) 2009-04-08
US5939830A (en) 1999-08-17
EP1044588A1 (de) 2000-10-18
KR100580850B1 (ko) 2006-05-16

Similar Documents

Publication Publication Date Title
DE69807751T2 (de) Verfahren und vorrichtung zum dimmen einer leuchtstofflampe in einer lcd-anzeigen-rückbeleuchtung
DE69006272T2 (de) Verfahren und Vorrichtung zum Dimmen einer Leuchtstofflampe in einer LCD-Anzeigen-Rückbeleuchtung.
DE69415965T2 (de) Verfahren und vorrichtung zur kontinuierlichen diffusen beleuchtung
DE69634910D1 (de) Verfahren und Vorrichtung zum Steuern einer kapazitiven Leuchtquelle
DE60024653D1 (de) Beleuchtungs anzeige vorrichtung und verfahren zur helligkeitssteigerung in beleuchtungsanzeigevorrichtung
DE69616971D1 (de) Verfahren und Schaltung zum Betreiben einer Entladungslampe
DE69802019D1 (de) Vorrichtung und Verfahren zum Einbrennen
DE69936708D1 (de) Verfahren und vorrichtung zur lampensteuerung
DE69836603D1 (de) Verfahren und Vorrichtung zum Biegen von Glasscheiben
DE69719903D1 (de) Verfahren und Gerät zur Versorgung einer Hochdruckentladungslampe
DE69728191D1 (de) Vorrichtung und Verfahren zum Verbrennen von Brennstoff
DE59611271D1 (de) Verfahren und Schaltungsanordnung zum Starten und Betreiben einer Entladungslampe
DE69528334D1 (de) Licht emittierende Vorrichtung und Verfahren zu ihrer Herstellung
DE69717924D1 (de) Gerät und Verfahren zum Betreiben einer Entladungslampe
DE59711190D1 (de) Verfahren und Vorrichtung zur Brennstoffvorwärmung einer Feuerungsanlage
DE60007614D1 (de) Verfahren und vorrichtung zum heizen mit lichtstrahlung
AU1260699A (en) Illumination control method and illumination control device for pulse light source used in aligner
DE59808290D1 (de) Verfahren und vorrichtung zur referenzierung von fluoreszenzintensitätssignalen
DE69806322D1 (de) Verfahren und Vorrichtung zum Betreiben einer Entladungslampe
DE59607194D1 (de) Verfahren und Schaltungsanordnung zum Betrieb einer Entladungslampe
DE59813115D1 (de) Verfahren und Vorrichtung zum Dekorieren von flachen selbsttragenden Objekten
DE69529187D1 (de) Lichtquellenvorrichtung mit einer Metallhalogenidlampe und Verfahren zum Betreiben einer Metallhalogenidlampe
DE59911380D1 (de) Verfahren und vorrichtung zur erzeugung einer nachleuchtschleppe
DE69726347D1 (de) Verfahren und Gerät zur Ausführung von mehreren Dimmstrategien
DE69810720T2 (de) Verfahren und Gerät zum Steuern einer Elektrolumineszenzlampe

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee