JP5076230B2 - 冷陰極蛍光ランプの駆動方式 - Google Patents
冷陰極蛍光ランプの駆動方式 Download PDFInfo
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- JP5076230B2 JP5076230B2 JP2006341222A JP2006341222A JP5076230B2 JP 5076230 B2 JP5076230 B2 JP 5076230B2 JP 2006341222 A JP2006341222 A JP 2006341222A JP 2006341222 A JP2006341222 A JP 2006341222A JP 5076230 B2 JP5076230 B2 JP 5076230B2
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- Prior art keywords
- phosphor
- period
- fluorescent lamp
- electrons
- cold cathode
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Description
11 ガラス管
12 蛍光体
13 陽極
14 陰極
20 パルス電源
30 可変抵抗
40 電源スイッチ
50 制御回路
Claims (1)
- 真空封止されたランプ管の内面に蛍光体付き陽極を備え、ランプ管内部に線状に延びる陰極を備え、この陰極はその外周面にnmオーダーの微細突起を備えた炭素膜からなる複数の電子放出点を備え、陽極と陰極との間にパルス状電圧を印加して上記複数の電子放出点それぞれから電界放射により陽極に向けて電子を放出させ、この放出した電子を上記蛍光体に衝突させて該蛍光体を励起発光させる冷陰極蛍光ランプの駆動方式において、
上記パルス状電圧を60Hz以上の周期で印加し、
上記周期Tに対するパルス状電圧の印加期間TAのデューティ比R=(印加期間TA/周期T)×100%とすると、デューティ比Rを0.1〜50%に制御することにより、次の印加期間までのパルス状電圧印加停止期間内で蛍光体にチャージアップしている電子を除電して当該次の印加期間で電子放出点から放出する電子の蛍光体へ向かう軌道の直進性を得るよう制御し、さらに印加期間TAのデューティ比Rを小さくして、斑状発光の輝度がその周囲の輝度との差が所定以下の値となるよう制御する、ことを特徴とする冷陰極蛍光ランプの駆動方式。
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JP2006341222A JP5076230B2 (ja) | 2006-12-19 | 2006-12-19 | 冷陰極蛍光ランプの駆動方式 |
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JP2006341222A JP5076230B2 (ja) | 2006-12-19 | 2006-12-19 | 冷陰極蛍光ランプの駆動方式 |
Publications (2)
Publication Number | Publication Date |
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JP2008153113A JP2008153113A (ja) | 2008-07-03 |
JP5076230B2 true JP5076230B2 (ja) | 2012-11-21 |
Family
ID=39655072
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JP2006341222A Expired - Fee Related JP5076230B2 (ja) | 2006-12-19 | 2006-12-19 | 冷陰極蛍光ランプの駆動方式 |
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JP (1) | JP5076230B2 (ja) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0436950A (ja) * | 1990-05-31 | 1992-02-06 | Matsushita Electron Corp | 冷陰極蛍光灯 |
TWI237527B (en) * | 2001-11-06 | 2005-08-01 | Delta Optoelectronics Inc | Driver apparatus for a flat-type lamp and driving method for the same |
US7511415B2 (en) * | 2004-08-26 | 2009-03-31 | Dialight Japan Co., Ltd. | Backlight for liquid crystal display device |
JP4628744B2 (ja) * | 2004-10-19 | 2011-02-09 | 株式会社ピュアロンジャパン | 液晶表示装置用バックライト装置 |
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2006
- 2006-12-19 JP JP2006341222A patent/JP5076230B2/ja not_active Expired - Fee Related
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