WO2009038043A1 - 点灯装置、バックライトユニット及び液晶表示装置 - Google Patents

点灯装置、バックライトユニット及び液晶表示装置 Download PDF

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Publication number
WO2009038043A1
WO2009038043A1 PCT/JP2008/066657 JP2008066657W WO2009038043A1 WO 2009038043 A1 WO2009038043 A1 WO 2009038043A1 JP 2008066657 W JP2008066657 W JP 2008066657W WO 2009038043 A1 WO2009038043 A1 WO 2009038043A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
light unit
back light
display device
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.)
Ceased
Application number
PCT/JP2008/066657
Other languages
English (en)
French (fr)
Inventor
Kazuhiro Kumada
Shigeru Ido
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Panasonic Electric Works 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 Panasonic Electric Works Co Ltd filed Critical Panasonic Electric Works Co Ltd
Priority to CN200880108240A priority Critical patent/CN101803467A/zh
Priority to EP08832074A priority patent/EP2192822A4/en
Priority to US12/677,908 priority patent/US20110260620A1/en
Publication of WO2009038043A1 publication Critical patent/WO2009038043A1/ja
Anticipated expiration legal-status Critical
Ceased 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
    • H05B41/26—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
    • H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • 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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • 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
    • H05B41/2827—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 specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0237—Switching ON and OFF the backlight within one frame
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/024—Scrolling of light from the illumination source over the display in combination with the scanning of the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Liquid Crystal (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

　点灯装置は、両端にフィラメントを有する複数の熱陰極ランプを点灯させるための点灯回路と、前記複数の熱陰極ランプのそれぞれのフィラメントを予熱するための予熱回路と、前記複数の熱陰極ランプの一方のフィラメント近傍に配置される少なくとも一つの第一の回路基板と、前記複数の熱陰極ランプの他方のフィラメント近傍に配置される少なくとも一つの第二の回路基板とを含み、前記点灯回路は、前記第一の回路基板と前記第二の回路基板の何れか一方に実装されていると共に、前記予熱回路は、前記第一の回路基板と前記第二の回路基板とに分割して実装または配線されている。
PCT/JP2008/066657 2007-09-21 2008-09-16 点灯装置、バックライトユニット及び液晶表示装置 Ceased WO2009038043A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200880108240A CN101803467A (zh) 2007-09-21 2008-09-16 点亮装置、背光单元以及液晶显示装置
EP08832074A EP2192822A4 (en) 2007-09-21 2008-09-16 LIGHTING DEVICE, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE
US12/677,908 US20110260620A1 (en) 2007-09-21 2008-09-16 Lighting device, backlight unit and liquid crystal display device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-246121 2007-09-21
JP2007246121 2007-09-21
JP2007-331352 2007-12-25
JP2007331352A JP2009094044A (ja) 2007-09-21 2007-12-25 点灯装置、バックライトユニット及び液晶表示装置

Publications (1)

Publication Number Publication Date
WO2009038043A1 true WO2009038043A1 (ja) 2009-03-26

Family

ID=40467857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066657 Ceased WO2009038043A1 (ja) 2007-09-21 2008-09-16 点灯装置、バックライトユニット及び液晶表示装置

Country Status (5)

Country Link
US (1) US20110260620A1 (ja)
EP (1) EP2192822A4 (ja)
JP (1) JP2009094044A (ja)
CN (1) CN101803467A (ja)
WO (1) WO2009038043A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101437564B1 (ko) * 2012-01-09 2014-09-05 김진국 형광등 안정기에 연결되어 구동하는 led형광등 구동장치 및 그 구동장치를 탑재한 led형광등
EP3561370B1 (en) 2012-11-17 2021-04-07 Fred Pereira Luminuous fluid sculptures
US11199301B2 (en) 2012-11-17 2021-12-14 Fred Metsch Pereira Luminous fluid sculptures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10326685A (ja) * 1997-05-27 1998-12-08 Matsushita Electric Works Ltd 放電灯点灯装置
JP2004349040A (ja) * 2003-05-21 2004-12-09 Nec Lcd Technologies Ltd バックライト装置及び液晶表示装置
JP3720390B2 (ja) 1994-06-21 2005-11-24 キヤノン株式会社 バックライト装置
JP2007220562A (ja) * 2006-02-17 2007-08-30 Matsushita Electric Ind Co Ltd 放電灯点灯装置、照明器具、液晶表示用バックライト装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5676198A (en) * 1979-11-27 1981-06-23 Nippon Electric Co Device for firing discharge lamp
US4399391A (en) * 1981-06-10 1983-08-16 General Electric Company Circuit for starting and operating fluorescent lamps
US4631450A (en) * 1983-12-28 1986-12-23 North American Philips Lighting Corporation Ballast adaptor for improving operation of fluorescent lamps
US5063328A (en) * 1986-12-17 1991-11-05 Walton John F Energy saving circuit for discharge tubes
US5111115A (en) * 1990-02-05 1992-05-05 Electronic & Transformer Engineering Limited Fluorescent lamp controller
US7187139B2 (en) * 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
JP2006012660A (ja) * 2004-06-28 2006-01-12 Sanken Electric Co Ltd 放電灯点灯回路
KR101213772B1 (ko) * 2006-09-28 2012-12-17 삼성디스플레이 주식회사 인버터 회로 및 이를 갖춘 백 라이트 장치
JP4807454B2 (ja) * 2007-06-20 2011-11-02 パナソニック電工株式会社 放電灯点灯装置、照明装置、及び液晶表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3720390B2 (ja) 1994-06-21 2005-11-24 キヤノン株式会社 バックライト装置
JPH10326685A (ja) * 1997-05-27 1998-12-08 Matsushita Electric Works Ltd 放電灯点灯装置
JP2004349040A (ja) * 2003-05-21 2004-12-09 Nec Lcd Technologies Ltd バックライト装置及び液晶表示装置
JP2007220562A (ja) * 2006-02-17 2007-08-30 Matsushita Electric Ind Co Ltd 放電灯点灯装置、照明器具、液晶表示用バックライト装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2192822A4

Also Published As

Publication number Publication date
JP2009094044A (ja) 2009-04-30
EP2192822A4 (en) 2011-07-27
CN101803467A (zh) 2010-08-11
US20110260620A1 (en) 2011-10-27
EP2192822A1 (en) 2010-06-02

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