发明申请
- 专利标题: Light Source Driving Module and Circuit
- 专利标题(中): 光源驱动模块和电路
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申请号: US12188202申请日: 2008-08-07
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公开(公告)号: US20090212716A1公开(公告)日: 2009-08-27
- 发明人: Chien-Yang Chen , Chi-Hsiu Lin , Shin-Chang Lin , Po-Kun Hsieh
- 申请人: Chien-Yang Chen , Chi-Hsiu Lin , Shin-Chang Lin , Po-Kun Hsieh
- 优先权: TW097106099 20080221
- 主分类号: H05B41/36
- IPC分类号: H05B41/36
摘要:
A light source driving circuit includes a voltage signal source and a temperature-improving current source for adjusting luminance of a series of LEDs. A first end of the series of LEDs is electrically connected to a ground end. The temperature-improving current source includes an adjustable power supply for outputting an adjustable voltage, a voltage-controlled current source for outputting currents according to the voltage signal source, and a feedback circuit electrically connected between a second end of the series of the LEDs and the adjustable power supply for controlling the output voltage of the adjustable power supply according to the voltage on the second end of the series of LEDs.
公开/授权文献
- US07667683B2 Light source driving module and circuit 公开/授权日:2010-02-23
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