TWI371990B - Cold cathode tube lighting device, tube current detecting circuit used in cold cathode tube lighting device, and tube current controlling method - Google Patents

Cold cathode tube lighting device, tube current detecting circuit used in cold cathode tube lighting device, and tube current controlling method

Info

Publication number
TWI371990B
TWI371990B TW095130975A TW95130975A TWI371990B TW I371990 B TWI371990 B TW I371990B TW 095130975 A TW095130975 A TW 095130975A TW 95130975 A TW95130975 A TW 95130975A TW I371990 B TWI371990 B TW I371990B
Authority
TW
Taiwan
Prior art keywords
lighting device
cold cathode
tube
cathode tube
tube current
Prior art date
Application number
TW095130975A
Other languages
English (en)
Other versions
TW200731874A (en
Inventor
Nobuaki Honbo
Original Assignee
Nec Corp
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 Nec Corp filed Critical Nec Corp
Publication of TW200731874A publication Critical patent/TW200731874A/zh
Application granted granted Critical
Publication of TWI371990B publication Critical patent/TWI371990B/zh

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
    • H05B41/282—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
TW095130975A 2005-08-23 2006-08-23 Cold cathode tube lighting device, tube current detecting circuit used in cold cathode tube lighting device, and tube current controlling method TWI371990B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005241682A JP4797511B2 (ja) 2005-08-23 2005-08-23 冷陰極管点灯装置、管電流制御方法、及び集積回路

Publications (2)

Publication Number Publication Date
TW200731874A TW200731874A (en) 2007-08-16
TWI371990B true TWI371990B (en) 2012-09-01

Family

ID=37779235

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095130975A TWI371990B (en) 2005-08-23 2006-08-23 Cold cathode tube lighting device, tube current detecting circuit used in cold cathode tube lighting device, and tube current controlling method

Country Status (4)

Country Link
US (1) US7459865B2 (zh)
JP (1) JP4797511B2 (zh)
CN (1) CN1921723B (zh)
TW (1) TWI371990B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101275966B1 (ko) * 2007-05-11 2013-06-14 엘지디스플레이 주식회사 백라이트 유닛 및 이를 구비한 액정표시장치
CN101682976A (zh) * 2007-06-05 2010-03-24 夏普株式会社 背光源灯点亮控制装置及具有该装置的显示装置
JP5196146B2 (ja) * 2007-10-24 2013-05-15 東芝ライテック株式会社 点灯装置および照明器具
TWI396158B (zh) * 2008-01-21 2013-05-11 Au Optronics Corp 具燈管電流平衡及回授機制之背光系統與其相關方法
CN101237737B (zh) * 2008-02-21 2011-09-21 友达光电股份有限公司 具灯管电流平衡及反馈机制的背光系统与其相关方法
JP5488959B2 (ja) * 2009-03-06 2014-05-14 Ｎｌｔテクノロジー株式会社 放電管点灯装置及び液晶表示装置
US8405407B2 (en) * 2009-06-05 2013-03-26 Chimei Innolux Corporation Current measurement circuit and measuring method thereof including a binary weighted capacitor array
US20130082608A1 (en) * 2011-09-29 2013-04-04 Leviton Manufacturing Co., Inc. Dimming ballast and related method allowing individual control of multiple lamps

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01142198U (zh) * 1988-03-23 1989-09-28
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
JPH0674089U (ja) * 1992-12-14 1994-10-18 太陽誘電株式会社 冷陰極管点灯装置
JPH07274524A (ja) * 1994-03-29 1995-10-20 Toshiba Lighting & Technol Corp 電源装置、放電灯点灯装置および照明装置
KR0137917B1 (ko) * 1994-10-28 1998-05-15 김광호 액정표시소자의 후면광원 구동회로
JP2000150191A (ja) * 1998-11-13 2000-05-30 Murata Mfg Co Ltd 冷陰極管駆動装置
JP2000235898A (ja) * 1999-02-16 2000-08-29 Hitachi Metals Ltd 蛍光管の駆動回路
JP4058530B2 (ja) 1999-08-06 2008-03-12 三菱電機株式会社 液晶表示装置のバックライト用他励式インバータ
JP2002017090A (ja) 2000-04-27 2002-01-18 Matsushita Electric Ind Co Ltd 圧電トランスの駆動方法および駆動装置
JP4300810B2 (ja) 2003-02-03 2009-07-22 パナソニック株式会社 放電灯点灯装置
JP2004335443A (ja) 2003-02-10 2004-11-25 Masakazu Ushijima 多灯点灯の放電管用インバータ回路及び面光源システム
JP2004265700A (ja) * 2003-02-28 2004-09-24 Toshiba Lighting & Technology Corp 電球形蛍光ランプ
JP3096242U (ja) 2003-03-04 2003-09-12 船井電機株式会社 テレビ受像機および冷陰極管調光装置
US6936975B2 (en) * 2003-04-15 2005-08-30 02Micro International Limited Power supply for an LCD panel
JP2005005059A (ja) * 2003-06-10 2005-01-06 Fdk Corp 放電管点灯用他励式インバータ回路
JP4554989B2 (ja) * 2003-07-30 2010-09-29 パナソニック株式会社 冷陰極管点灯装置
KR100953429B1 (ko) 2003-08-11 2010-04-20 삼성전자주식회사 램프 구동 방법 및 그 장치와, 이를 갖는 백라이트어셈블리 및 액정 표시 장치
US7126289B2 (en) * 2004-08-20 2006-10-24 O2 Micro Inc Protection for external electrode fluorescent lamp system

Also Published As

Publication number Publication date
US7459865B2 (en) 2008-12-02
CN1921723B (zh) 2010-05-26
JP2007059155A (ja) 2007-03-08
TW200731874A (en) 2007-08-16
JP4797511B2 (ja) 2011-10-19
US20070046216A1 (en) 2007-03-01
CN1921723A (zh) 2007-02-28

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