JP2010524221A - 発光ダイオードの駆動方法 - Google Patents
発光ダイオードの駆動方法 Download PDFInfo
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- JP2010524221A JP2010524221A JP2010501631A JP2010501631A JP2010524221A JP 2010524221 A JP2010524221 A JP 2010524221A JP 2010501631 A JP2010501631 A JP 2010501631A JP 2010501631 A JP2010501631 A JP 2010501631A JP 2010524221 A JP2010524221 A JP 2010524221A
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- string
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- emitting diodes
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- 238000001228 spectrum Methods 0.000 claims abstract description 21
- 230000003595 spectral effect Effects 0.000 claims abstract description 9
- 239000003086 colorant Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000021615 conjugation Effects 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
- H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Led Devices (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (11)
- 直列接続の発光ダイオードのストリングに関する駆動装置であって、前記発光ダイオードのうちの少なくとも2つが異なるスペクトルを有し、当該駆動装置が、
−主電流を前記ストリングへ供給するための、前記ストリングの両端に結合される出力部を有する主電源供給源と、
−前記ストリングにおける連続する発光ダイオード間における接合部のうちの少なくとも1つに結合され、前記接合部からデルタ電流を供給する又は引き出す、二次電源供給源であって、前記デルタ電流が前記主電流より小さい、二次電源供給源と、
−前記ストリングによって放射される前記混合光の所望なスペクトル組成を得るように前記デルタ電流を生成するために、前記二次電源供給源を制御する制御器と、
を有する、駆動装置。 - 請求項1に記載の駆動装置であって、前記主電源供給源が、切り替えモード電源供給源を含む、駆動装置。
- 請求項2に記載の駆動装置であって、前記ストリングに直列に接続されるセンサ抵抗器と、前記主電流を安定化させるように前記主電源供給源の主スイッチを制御する制御信号を得るために、前記センサ抵抗器の両端の検出される電圧を参照電圧と比較する比較器と、を更に有する、駆動装置。
- 請求項1又は2に記載の駆動装置であって、前記二次電源供給源が、制御可能な線形電源供給源を含む、駆動装置。
- 請求項4に記載の駆動装置であって、前記線形電源供給源が、制御可能な電流供給源を含む、駆動装置。
- 請求項1乃至5のいずれか一項に記載の駆動装置、及び、前記直列接続の発光ダイオードのストリング、のシステム。
- 請求項6に記載のシステムであって、前記ストリングが、白色光を含む色域を覆うための少なくとも3つの異なる色の発光ダイオードを含み、前記制御器は、所定の白色色点を得るように、前記デルタ電流を変更するために前記二次電源供給源を制御するように構成される、システム。
- 請求項6に記載のシステムであって、更に、
−異なるスペクトルを有する少なくとも2つの発光ダイオードの直列接続を含む更なるストリングと、
−前記更なるストリングへ更なる主電流を供給するための、前記更なるストリングの両端に結合される出力部を有する更なる主電源供給源と、
−前記更なるストリングにおける連続する発光ダイオード間における接合部のうちの少なくとも1つに結合され、前記接合部から更なるデルタ電流を供給する又は引き出す、更なる二次電源供給源であって、前記更なるデルタ電流が前記更なる主電流より小さい、更なる二次電源供給源と、
を有し、
−前記制御器は、前記更なるストリングによって放射される前記混合光の所定のスペクトル組成を得るように、前記更なるデルタ電流を変更するために前記更なる二次電源供給源を制御するようにも構成される、
システム。 - 請求項6乃至8のいずれか一項に記載のシステムを含む表示パネルに関するバックライトユニットであって、前記ストリング、又は前記ストリング及び前記更なるストリングによって放射される光が、前記表示パネルを照らすように前記バックライトユニットによって方向付けされる、バックライトユニット。
- 請求項9に記載の前記バックライトユニットと前記表示パネルを含むシステム。
- 請求項10に記載のシステムを含む表示装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07105475 | 2007-04-02 | ||
EP07105475.3 | 2007-04-02 | ||
PCT/IB2008/051196 WO2008120166A1 (en) | 2007-04-02 | 2008-03-31 | Driving light emitting diodes |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010524221A true JP2010524221A (ja) | 2010-07-15 |
JP5485868B2 JP5485868B2 (ja) | 2014-05-07 |
Family
ID=39590443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010501631A Active JP5485868B2 (ja) | 2007-04-02 | 2008-03-31 | 発光ダイオードの駆動方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8203284B2 (ja) |
EP (1) | EP2143303B1 (ja) |
JP (1) | JP5485868B2 (ja) |
CN (1) | CN101663919B (ja) |
BR (1) | BRPI0809846A8 (ja) |
ES (1) | ES2391916T3 (ja) |
PL (1) | PL2143303T3 (ja) |
RU (1) | RU2462841C2 (ja) |
WO (1) | WO2008120166A1 (ja) |
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WO2017046882A1 (ja) * | 2015-09-16 | 2017-03-23 | パイオニア株式会社 | 発光装置 |
WO2017046881A1 (ja) * | 2015-09-16 | 2017-03-23 | パイオニア株式会社 | 発光装置 |
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DE102009022070A1 (de) * | 2009-05-20 | 2010-11-25 | Osram Gesellschaft mit beschränkter Haftung | Schaltung sowie Lampe umfassend die Schaltung |
US9066381B2 (en) | 2011-03-16 | 2015-06-23 | Integrated Illumination Systems, Inc. | System and method for low level dimming |
US9967940B2 (en) | 2011-05-05 | 2018-05-08 | Integrated Illumination Systems, Inc. | Systems and methods for active thermal management |
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US11917740B2 (en) | 2011-07-26 | 2024-02-27 | Hunter Industries, Inc. | Systems and methods for providing power and data to devices |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017046882A1 (ja) * | 2015-09-16 | 2017-03-23 | パイオニア株式会社 | 発光装置 |
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Also Published As
Publication number | Publication date |
---|---|
RU2009140317A (ru) | 2011-05-10 |
US20100102732A1 (en) | 2010-04-29 |
ES2391916T3 (es) | 2012-12-03 |
EP2143303B1 (en) | 2012-08-08 |
CN101663919B (zh) | 2013-07-24 |
RU2462841C2 (ru) | 2012-09-27 |
BRPI0809846A8 (pt) | 2015-10-27 |
JP5485868B2 (ja) | 2014-05-07 |
WO2008120166A1 (en) | 2008-10-09 |
CN101663919A (zh) | 2010-03-03 |
US8203284B2 (en) | 2012-06-19 |
PL2143303T3 (pl) | 2013-01-31 |
BRPI0809846A2 (pt) | 2014-09-23 |
EP2143303A1 (en) | 2010-01-13 |
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