JP4642406B2 - 定電流駆動回路 - Google Patents

定電流駆動回路 Download PDF

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Publication number
JP4642406B2
JP4642406B2 JP2004225541A JP2004225541A JP4642406B2 JP 4642406 B2 JP4642406 B2 JP 4642406B2 JP 2004225541 A JP2004225541 A JP 2004225541A JP 2004225541 A JP2004225541 A JP 2004225541A JP 4642406 B2 JP4642406 B2 JP 4642406B2
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JP
Japan
Prior art keywords
voltage
led group
current
constant current
unit
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
JP2004225541A
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English (en)
Japanese (ja)
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JP2006049423A5 (enExample
JP2006049423A (ja
Inventor
太郎 木村
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.)
Sharp NEC Display Solutions Ltd
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NEC Display Solutions Ltd
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Priority to JP2004225541A priority Critical patent/JP4642406B2/ja
Publication of JP2006049423A publication Critical patent/JP2006049423A/ja
Publication of JP2006049423A5 publication Critical patent/JP2006049423A5/ja
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Publication of JP4642406B2 publication Critical patent/JP4642406B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
JP2004225541A 2004-08-02 2004-08-02 定電流駆動回路 Expired - Fee Related JP4642406B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004225541A JP4642406B2 (ja) 2004-08-02 2004-08-02 定電流駆動回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004225541A JP4642406B2 (ja) 2004-08-02 2004-08-02 定電流駆動回路

Publications (3)

Publication Number Publication Date
JP2006049423A JP2006049423A (ja) 2006-02-16
JP2006049423A5 JP2006049423A5 (enExample) 2007-08-16
JP4642406B2 true JP4642406B2 (ja) 2011-03-02

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ID=36027657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004225541A Expired - Fee Related JP4642406B2 (ja) 2004-08-02 2004-08-02 定電流駆動回路

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JP (1) JP4642406B2 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4839023B2 (ja) * 2005-06-22 2011-12-14 Ｆｄｋ株式会社 発光ダイオード調光回路および照明装置
JP2007281424A (ja) 2006-03-15 2007-10-25 Casio Comput Co Ltd 発光素子の駆動装置、発光素子の駆動方法及び発光素子の駆動プログラム
KR101243144B1 (ko) * 2006-04-28 2013-03-13 엘지이노텍 주식회사 Ｌｃｄ 패널용 ｌｅｄ 드라이버의 구동회로
WO2007148298A1 (en) * 2006-06-22 2007-12-27 Koninklijke Philips Electronics N.V. Drive circuit for driving a load with pulsed current
KR101101818B1 (ko) 2006-06-28 2012-01-05 삼성전자주식회사 디스플레이장치 및 그 제어방법
JP4267647B2 (ja) 2006-08-10 2009-05-27 林化学工業株式会社 発光装置
JP4845694B2 (ja) * 2006-11-30 2011-12-28 セイコーインスツル株式会社 Ｌｅｄ駆動回路
JP2008283033A (ja) * 2007-05-11 2008-11-20 Ricoh Co Ltd 駆動回路及びその駆動回路を有する電子機器
US9101022B2 (en) * 2008-01-25 2015-08-04 Eveready Battery Company, Inc. Lighting device having boost circuitry
KR101563208B1 (ko) 2009-02-04 2015-10-28 삼성디스플레이 주식회사 광원 구동 장치 및 이를 포함하는 광원 장치
CN102598315B (zh) * 2009-11-04 2015-05-06 罗姆股份有限公司 背光灯用发光二极管灯串的驱动电路和驱动方法、以及使用了它的背光灯及显示器装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7071762B2 (en) * 2001-01-31 2006-07-04 Koninklijke Philips Electronics N.V. Supply assembly for a led lighting module

Also Published As

Publication number Publication date
JP2006049423A (ja) 2006-02-16

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