JP4918786B2 - 情報機器 - Google Patents
情報機器 Download PDFInfo
- Publication number
- JP4918786B2 JP4918786B2 JP2006006911A JP2006006911A JP4918786B2 JP 4918786 B2 JP4918786 B2 JP 4918786B2 JP 2006006911 A JP2006006911 A JP 2006006911A JP 2006006911 A JP2006006911 A JP 2006006911A JP 4918786 B2 JP4918786 B2 JP 4918786B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode tube
- cold cathode
- temperature
- mercury
- waveform
- 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
Links
Images
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
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2858—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Description
5…バックライト、6…液晶パネル、7…液晶制御回路、8…電極、9…蛍光塗料、
10…水銀、11…水銀イオン、12…外部熱源、24…冷陰極管正電極、
25…冷陰極管負電極、26…昇圧トランス、27…トランス駆動回路、
28…DC電源、29…デューティー制御回路、32…コンパレータ、
33…プラス側入力端子、34…マイナス側入力端子、35…出力端子、
40…正電極側温度検知素子、41…負電極側温度検知素子
Claims (1)
- 冷陰極管を光源とする表示装置と、
前記冷陰極管の正極側と負極側の電極近傍の温度を検出するセンサと、
前記センサの検出結果により前記冷陰極管に印加する交流電圧の出力波形を制御する制御回路と、
前記制御回路により駆動デューティーを制御され、前記冷陰極管に交流電圧を印加するインバータ電源とを備え、
前記制御回路は、前記冷陰極管の正極側の温度が負極側の温度より高い場合に、前記冷陰極管の正極側に印加する交流電圧の出力波形がマイナス側が長い波形になるように駆動デューティーを制御し、
前記冷陰極管の正極側の温度が負極側の温度より低い場合に、前記冷陰極管の正極側に印加する交流電圧の出力波形がプラス側が長い波形になるように駆動デューティーを制御することを特徴とする情報機器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006006911A JP4918786B2 (ja) | 2006-01-16 | 2006-01-16 | 情報機器 |
CN200710001999.1A CN101005006B (zh) | 2006-01-16 | 2007-01-16 | 具有冷阴极管的显示装置 |
US11/654,052 US7719212B2 (en) | 2006-01-16 | 2007-01-16 | Display device having a variable AC source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006006911A JP4918786B2 (ja) | 2006-01-16 | 2006-01-16 | 情報機器 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007188800A JP2007188800A (ja) | 2007-07-26 |
JP2007188800A5 JP2007188800A5 (ja) | 2009-02-12 |
JP4918786B2 true JP4918786B2 (ja) | 2012-04-18 |
Family
ID=38343812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006006911A Expired - Fee Related JP4918786B2 (ja) | 2006-01-16 | 2006-01-16 | 情報機器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7719212B2 (ja) |
JP (1) | JP4918786B2 (ja) |
CN (1) | CN101005006B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2230442A4 (en) * | 2008-01-22 | 2010-12-15 | Sharp Kk | LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3606909B2 (ja) * | 1994-07-12 | 2005-01-05 | 三菱電機株式会社 | 交流放電灯点灯装置 |
JPH0917577A (ja) * | 1996-08-09 | 1997-01-17 | Matsushita Electric Ind Co Ltd | 光出力発生装置 |
JP2000003797A (ja) * | 1998-06-15 | 2000-01-07 | Canon Inc | 冷陰極管インバータ |
JP2001176685A (ja) * | 1999-12-15 | 2001-06-29 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JP2001313191A (ja) * | 2000-04-28 | 2001-11-09 | Matsushita Electric Works Ltd | 放電灯点灯装置 |
JP4241615B2 (ja) * | 2002-06-25 | 2009-03-18 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 放電ランプの動作 |
JP2005019165A (ja) * | 2003-06-25 | 2005-01-20 | Toshiba Lighting & Technology Corp | 照明装置 |
JP2005025981A (ja) | 2003-06-30 | 2005-01-27 | Harison Toshiba Lighting Corp | 表示装置用面光源装置及び表示装置 |
KR100953429B1 (ko) * | 2003-08-11 | 2010-04-20 | 삼성전자주식회사 | 램프 구동 방법 및 그 장치와, 이를 갖는 백라이트어셈블리 및 액정 표시 장치 |
-
2006
- 2006-01-16 JP JP2006006911A patent/JP4918786B2/ja not_active Expired - Fee Related
-
2007
- 2007-01-16 US US11/654,052 patent/US7719212B2/en not_active Expired - Fee Related
- 2007-01-16 CN CN200710001999.1A patent/CN101005006B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101005006A (zh) | 2007-07-25 |
JP2007188800A (ja) | 2007-07-26 |
CN101005006B (zh) | 2013-01-02 |
US20070205726A1 (en) | 2007-09-06 |
US7719212B2 (en) | 2010-05-18 |
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