TW200711533A - Current control circuit, led current controller and light emitting device - Google Patents

Current control circuit, led current controller and light emitting device

Info

Publication number
TW200711533A
TW200711533A TW095123266A TW95123266A TW200711533A TW 200711533 A TW200711533 A TW 200711533A TW 095123266 A TW095123266 A TW 095123266A TW 95123266 A TW95123266 A TW 95123266A TW 200711533 A TW200711533 A TW 200711533A
Authority
TW
Taiwan
Prior art keywords
order
light emitting
control circuit
bit
emitting device
Prior art date
Application number
TW095123266A
Other languages
English (en)
Inventor
Shigeharu Nakao
Kei Nagao
Original Assignee
Rohm Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rohm Co Ltd filed Critical Rohm Co Ltd
Publication of TW200711533A publication Critical patent/TW200711533A/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • H05B45/32—Pulse-control circuits
    • 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]

Landscapes

  • Led Devices (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
TW095123266A 2005-06-28 2006-06-28 Current control circuit, led current controller and light emitting device TW200711533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005188325A JP4963802B2 (ja) 2005-06-28 2005-06-28 電流制御回路、ｌｅｄ電流制御装置および発光装置

Publications (1)

Publication Number Publication Date
TW200711533A true TW200711533A (en) 2007-03-16

Family

ID=37595195

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095123266A TW200711533A (en) 2005-06-28 2006-06-28 Current control circuit, led current controller and light emitting device

Country Status (6)

Country Link
US (1) US7659873B2 (zh)
JP (1) JP4963802B2 (zh)
KR (1) KR20080030632A (zh)
CN (1) CN101176256B (zh)
TW (1) TW200711533A (zh)
WO (1) WO2007000943A1 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100945797B1 (ko) * 2008-05-30 2010-03-08 주식회사 하이닉스반도체 듀티 사이클 보정 회로 및 방법
CN101431389B (zh) * 2008-11-19 2014-01-01 深圳市中庆光电显示科技开发有限公司 一种电路及其信号的传输方法
US8111023B2 (en) * 2008-12-18 2012-02-07 National Chi Nan University Control system for different colors of light emitting diodes
TWI430705B (zh) * 2009-09-16 2014-03-11 Novatek Microelectronics Corp 發光二極體的驅動裝置及其驅動方法
CN102143624A (zh) * 2010-01-28 2011-08-03 宋忠慎 一种高频窄脉冲驱动led的高效节能方法
TWI422269B (zh) 2010-07-14 2014-01-01 Richtek Technology Corp 具有去除閃爍功能之ｌｅｄ控制器及ｌｅｄ去除閃爍電路與相關方法
US8975775B2 (en) * 2012-01-24 2015-03-10 Hamilton Sundstrand Corporation Fail protected pulse generator and system
CN103974512A (zh) * 2014-05-05 2014-08-06 生迪光电科技股份有限公司 一种基于照明装置的无线音乐调光方法及其系统
CN108366456B (zh) * 2018-03-05 2020-02-11 上海艾为电子技术股份有限公司 一种移动设备指示灯的驱动方法、驱动装置及移动设备
DE112020006004T5 (de) * 2019-12-06 2022-11-03 Rohm Co., Ltd. Treibervorrichtung für lichtemittierendes element

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836887A (en) * 1972-12-18 1974-09-17 Mitsubishi Electric Corp Control system for electric installations on vehicle
JPS5380271A (en) * 1976-12-24 1978-07-15 Seiko Instr & Electronics Ltd Alarm watch
GB1582563A (en) * 1977-06-21 1981-01-14 Texas Instruments Ltd Digital control system and a method of transmitting control data in such a system
US4198623A (en) * 1978-11-13 1980-04-15 Sanders Associates, Inc. Touch entry interactive cathode ray tube arrangement
JPH0652875B2 (ja) 1987-11-28 1994-07-06 日本電気株式会社 Ｐｗｍ変換回路
JPH05158430A (ja) * 1991-12-03 1993-06-25 Rohm Co Ltd 表示装置
JP2001272938A (ja) * 2000-03-28 2001-10-05 Sharp Corp 色調調整回路およびその回路を備えたバックライトモジュールおよび発光ダイオード表示装置
JP3529718B2 (ja) 2000-10-03 2004-05-24 ローム株式会社 携帯形電話機の発光装置およびその駆動ｉｃ
JP4056381B2 (ja) 2002-12-24 2008-03-05 埼玉日本電気株式会社 Ｌｅｄ制御回路
JP4163079B2 (ja) 2003-09-12 2008-10-08 ローム株式会社 発光制御回路
JP2009135138A (ja) * 2007-11-28 2009-06-18 Texas Instr Japan Ltd Ｌｅｄ駆動回路

Also Published As

Publication number Publication date
WO2007000943A1 (ja) 2007-01-04
CN101176256A (zh) 2008-05-07
CN101176256B (zh) 2011-07-13
JP2007012683A (ja) 2007-01-18
US20090115347A1 (en) 2009-05-07
KR20080030632A (ko) 2008-04-04
JP4963802B2 (ja) 2012-06-27
US7659873B2 (en) 2010-02-09

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