JP2007280957A - Ledアレイ駆動装置 - Google Patents
Ledアレイ駆動装置 Download PDFInfo
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- JP2007280957A JP2007280957A JP2007099623A JP2007099623A JP2007280957A JP 2007280957 A JP2007280957 A JP 2007280957A JP 2007099623 A JP2007099623 A JP 2007099623A JP 2007099623 A JP2007099623 A JP 2007099623A JP 2007280957 A JP2007280957 A JP 2007280957A
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- 238000003491 array Methods 0.000 claims abstract description 13
- 238000003079 width control Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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]
-
- 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]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
【解決手段】外部から入力される調光制御信号及び/または幅制御信号に応じて、赤色/緑色/青色LEDアレイの駆動電源をそれぞれ設定する一つの調光/幅設定部31と、前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、赤色LEDアレイ41に駆動電源を提供する複数の赤色LEDアレイ駆動回路32と、同様に、PWM方式で入力電源をオン/オフスイッチングすることにより緑色LEDアレイ42に駆動電源を提供する複数の緑色LEDアレイ駆動回路33と、同様に、PWM方式で入力電源をオン/オフスイッチングすることにより、青色LEDアレイ43に駆動電源を提供する複数の青色LED駆動回路34と、を含むLEDアレイ駆動装置を提供する。
【選択図】図2
Description
外部から入力される調光制御信号及び/または幅制御信号に応じて、赤色/緑色/青色LEDアレイの駆動電源をそれぞれ設定する一つの調光/幅設定部と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、赤色LEDアレイに駆動電源を提供する複数の赤色LEDアレイ駆動回路と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、緑色LEDアレイに駆動電源を提供する複数の緑色LEDアレイ駆動回路と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、青色LEDアレイに駆動電源を提供する複数の青色LED駆動回路と、を含むことを特徴とするLEDアレイ駆動装置を提供する。
31 調光/幅設定部
32 赤色LEDアレイ駆動回路
33 緑色LEDアレイ駆動回路
34 青色LEDアレイ駆動回路
321、331、341 PWM制御部
322、332、342 DC/DCコンバータ
40 光源
41 赤色LEDアレイ
42 緑色LEDアレイ
43 青色LEDアレイ
Claims (4)
- 外部から入力される調光制御信号及び/または幅制御信号に応じて、赤色/緑色/青色LEDアレイの駆動電源をそれぞれ設定する一つの調光/幅設定部と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、赤色LEDアレイに駆動電源を提供する複数の赤色LEDアレイ駆動回路と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、緑色LEDアレイに駆動電源を提供する複数の緑色LEDアレイ駆動回路と、
前記調光/幅設定部に共通に連結され、前記調光/幅設定部により設定された駆動電源を提供するよう、PWM方式で入力電源をオン/オフスイッチングすることにより、青色LEDアレイに駆動電源を提供する複数の青色LED駆動回路と、を含むことを特徴とするLEDアレイ駆動装置。 - 前記赤色LEDアレイ駆動回路は、
PWM駆動部から出力されるパルス信号のデューティ比によって、前記赤色LEDアレイに提供される電源をスイッチングすることにより、入力電源を駆動電源に変換するDC/DCコンバータと、
前記調光/幅設定部により設定された赤色LEDアレイの駆動電源を前記赤色LEDアレイに提供するように、前記PWM駆動部の出力パルス信号のデューティ比を制御するためのPWM制御信号を生成するPWM制御部と、を含むことを特徴とする請求項1に記載のLEDアレイ駆動装置。 - 前記緑色LEDアレイ駆動回路は、
PWM駆動部から出力されるパルス信号のデューティ比によって、前記緑色LEDアレイに提供される電源をスイッチングすることにより、入力電源を駆動電源に変換するDC/DCコンバータと、
前記調光/幅設定部により設定された緑色LEDアレイの駆動電源を前記緑色LEDアレイに提供するように、前記PWM駆動部の出力パルス信号のデューティ比を制御するためのPWM制御信号を生成するPWM制御部と、を含むことを特徴とする請求項1に記載のLEDアレイ駆動装置。 - 前記青色LEDアレイ駆動回路は、
PWM駆動部から出力されるパルス信号のデューティ比によって、前記青色LEDアレイに提供される電源をスイッチングすることにより、入力電源を駆動電源に変換するDC/DCコンバータと、
前記調光/幅設定部により設定された青色LEDアレイの駆動電源を前記青色LEDアレイに提供するように、前記PWM駆動部の出力パルス信号のデューティ比を制御するためのPWM制御信号を生成するPWM制御部と、を含むことを特徴とする請求項1に記載のLEDアレイ駆動装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2006-0031883 | 2006-04-07 | ||
KR1020060031883A KR100691628B1 (ko) | 2006-04-07 | 2006-04-07 | Led 어레이 구동 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007280957A true JP2007280957A (ja) | 2007-10-25 |
JP4895898B2 JP4895898B2 (ja) | 2012-03-14 |
Family
ID=38102841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007099623A Active JP4895898B2 (ja) | 2006-04-07 | 2007-04-05 | Ledアレイ駆動装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7486032B2 (ja) |
JP (1) | JP4895898B2 (ja) |
KR (1) | KR100691628B1 (ja) |
NL (1) | NL2000573C2 (ja) |
TW (1) | TWI440402B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009159265A (ja) * | 2007-12-26 | 2009-07-16 | Sharp Corp | パルス信号遅延回路及びled駆動回路 |
JP2011003479A (ja) * | 2009-06-22 | 2011-01-06 | Rohm Co Ltd | 照明灯および照明装置 |
JP2011512637A (ja) * | 2008-02-21 | 2011-04-21 | 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 | Gls似のled光源 |
CN103150990A (zh) * | 2011-09-28 | 2013-06-12 | 合肥工业大学 | 具有多种镜像比的led显示屏恒流驱动电路 |
US8686646B2 (en) | 2009-05-27 | 2014-04-01 | Rohm Co., Ltd. | Illuminating device |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI345107B (en) * | 2006-06-28 | 2011-07-11 | Everlight Electronics Co Ltd | Primary color matrix of led |
US8207686B2 (en) * | 2006-09-05 | 2012-06-26 | The Sloan Company, Inc. | LED controller and method using variable drive currents |
TWI364014B (en) * | 2007-04-10 | 2012-05-11 | Novatek Microelectronics Corp | Method and device capable of controlling soft-start dymatically |
US7531971B2 (en) * | 2007-05-14 | 2009-05-12 | Tpo Displays Corp. | Backlight units and display devices |
KR101494003B1 (ko) * | 2007-11-30 | 2015-02-16 | 엘지전자 주식회사 | 백라이트 제어장치 및 방법, 그리고 그를 이용한 단말기기 |
US7888883B2 (en) * | 2008-01-25 | 2011-02-15 | Eveready Battery Company, Inc. | Lighting device having cross-fade and method thereof |
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TWI406595B (zh) * | 2008-07-25 | 2013-08-21 | Richtek Technology Corp | LED driver and controller for its use |
US8242704B2 (en) * | 2008-09-09 | 2012-08-14 | Point Somee Limited Liability Company | Apparatus, method and system for providing power to solid state lighting |
US8232742B2 (en) | 2008-11-27 | 2012-07-31 | Arkalumen Inc. | Method, apparatus and computer-readable media for controlling lighting devices |
US7990077B2 (en) * | 2008-12-12 | 2011-08-02 | Cheng Uei Precision Industry Co., Ltd. | LED control circuit |
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KR101014619B1 (ko) | 2009-04-03 | 2011-02-16 | 황재원 | 다수의 led 램프 구동을 위한 집단조도제어용 전원공급장치 |
TWI415518B (zh) * | 2009-06-02 | 2013-11-11 | Richtek Technology Corp | 發光元件驅動電路、發光元件陣列控制器及其控制方法 |
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US9089024B2 (en) | 2010-05-11 | 2015-07-21 | Arkalumen Inc. | Methods and apparatus for changing a DC supply voltage applied to a lighting circuit |
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US10225904B2 (en) | 2015-05-05 | 2019-03-05 | Arkalumen, Inc. | Method and apparatus for controlling a lighting module based on a constant current level from a power source |
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Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63226079A (ja) * | 1986-10-07 | 1988-09-20 | Seiko Epson Corp | Ledアレイ駆動回路 |
JPH07311560A (ja) * | 1994-05-17 | 1995-11-28 | Nichia Chem Ind Ltd | マルチカラーのledディスプレイユニット |
JP2002203988A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Lsi System Support Kk | 発光素子駆動回路 |
JP2003107424A (ja) * | 2001-06-28 | 2003-04-09 | Matsushita Electric Ind Co Ltd | 液晶表示装置およびその製造方法、並びに照明装置の駆動制御方法 |
JP2004233714A (ja) * | 2003-01-31 | 2004-08-19 | Fuji Photo Film Co Ltd | Led照明装置 |
JP2005136157A (ja) * | 2003-10-30 | 2005-05-26 | Rohm Co Ltd | 発光素子駆動装置、発光素子駆動装置を有する表示モジュール及び、表示モジュールを備えた電子機器 |
JP2005191528A (ja) * | 2003-12-01 | 2005-07-14 | Sharp Corp | 半導体発光装置のパルス駆動方法およびパルス駆動回路 |
JP2005228979A (ja) * | 2004-02-13 | 2005-08-25 | Toshiba Corp | 多色発光回路及び電子機器 |
JP2005310998A (ja) * | 2004-04-20 | 2005-11-04 | Sony Corp | 定電流駆動装置、バックライト光源装置及びカラー液晶表示装置 |
JP2006066776A (ja) * | 2004-08-30 | 2006-03-09 | Sony Ericsson Mobilecommunications Japan Inc | 被駆動素子制御回路、携帯端末 |
JP2006085993A (ja) * | 2004-09-15 | 2006-03-30 | Denso Corp | 発光ダイオード点灯装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6806659B1 (en) * | 1997-08-26 | 2004-10-19 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US7463070B2 (en) * | 2002-02-14 | 2008-12-09 | Koninklijke Philips Electronics, N.V. | Switching device for driving LED array by pulse-shaped current modulation |
US6753661B2 (en) * | 2002-06-17 | 2004-06-22 | Koninklijke Philips Electronics N.V. | LED-based white-light backlighting for electronic displays |
JP2004309509A (ja) * | 2003-04-01 | 2004-11-04 | Hunet Inc | 表示装置の調整方法 |
US7126290B2 (en) * | 2004-02-02 | 2006-10-24 | Radiant Power Corp. | Light dimmer for LED and incandescent lamps |
JP2006047594A (ja) * | 2004-08-03 | 2006-02-16 | Funai Electric Co Ltd | 液晶表示装置 |
US7394210B2 (en) * | 2004-09-29 | 2008-07-01 | Tir Technology Lp | System and method for controlling luminaires |
WO2007019663A1 (en) * | 2005-08-17 | 2007-02-22 | Tir Technology Lp | Digitally controlled luminaire system |
US7847783B2 (en) * | 2005-10-11 | 2010-12-07 | O2Micro International Limited | Controller circuitry for light emitting diodes |
-
2006
- 2006-04-07 KR KR1020060031883A patent/KR100691628B1/ko active IP Right Grant
-
2007
- 2007-04-04 NL NL2000573A patent/NL2000573C2/nl active Search and Examination
- 2007-04-04 TW TW096111974A patent/TWI440402B/zh active
- 2007-04-05 JP JP2007099623A patent/JP4895898B2/ja active Active
- 2007-04-05 US US11/730,986 patent/US7486032B2/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63226079A (ja) * | 1986-10-07 | 1988-09-20 | Seiko Epson Corp | Ledアレイ駆動回路 |
JPH07311560A (ja) * | 1994-05-17 | 1995-11-28 | Nichia Chem Ind Ltd | マルチカラーのledディスプレイユニット |
JP2002203988A (ja) * | 2000-12-28 | 2002-07-19 | Toshiba Lsi System Support Kk | 発光素子駆動回路 |
JP2003107424A (ja) * | 2001-06-28 | 2003-04-09 | Matsushita Electric Ind Co Ltd | 液晶表示装置およびその製造方法、並びに照明装置の駆動制御方法 |
JP2004233714A (ja) * | 2003-01-31 | 2004-08-19 | Fuji Photo Film Co Ltd | Led照明装置 |
JP2005136157A (ja) * | 2003-10-30 | 2005-05-26 | Rohm Co Ltd | 発光素子駆動装置、発光素子駆動装置を有する表示モジュール及び、表示モジュールを備えた電子機器 |
JP2005191528A (ja) * | 2003-12-01 | 2005-07-14 | Sharp Corp | 半導体発光装置のパルス駆動方法およびパルス駆動回路 |
JP2005228979A (ja) * | 2004-02-13 | 2005-08-25 | Toshiba Corp | 多色発光回路及び電子機器 |
JP2005310998A (ja) * | 2004-04-20 | 2005-11-04 | Sony Corp | 定電流駆動装置、バックライト光源装置及びカラー液晶表示装置 |
JP2006066776A (ja) * | 2004-08-30 | 2006-03-09 | Sony Ericsson Mobilecommunications Japan Inc | 被駆動素子制御回路、携帯端末 |
JP2006085993A (ja) * | 2004-09-15 | 2006-03-30 | Denso Corp | 発光ダイオード点灯装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009159265A (ja) * | 2007-12-26 | 2009-07-16 | Sharp Corp | パルス信号遅延回路及びled駆動回路 |
JP2011512637A (ja) * | 2008-02-21 | 2011-04-21 | 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 | Gls似のled光源 |
US8686646B2 (en) | 2009-05-27 | 2014-04-01 | Rohm Co., Ltd. | Illuminating device |
US9113527B2 (en) | 2009-05-27 | 2015-08-18 | Rohm Co., Ltd. | Illuminating device |
JP2011003479A (ja) * | 2009-06-22 | 2011-01-06 | Rohm Co Ltd | 照明灯および照明装置 |
CN103150990A (zh) * | 2011-09-28 | 2013-06-12 | 合肥工业大学 | 具有多种镜像比的led显示屏恒流驱动电路 |
Also Published As
Publication number | Publication date |
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NL2000573C2 (nl) | 2014-02-25 |
NL2000573A1 (nl) | 2007-10-09 |
TWI440402B (zh) | 2014-06-01 |
JP4895898B2 (ja) | 2012-03-14 |
US7486032B2 (en) | 2009-02-03 |
US20070236154A1 (en) | 2007-10-11 |
KR100691628B1 (ko) | 2007-03-12 |
TW200746915A (en) | 2007-12-16 |
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