发明申请
- 专利标题: Temperature dependant LED current controller
- 专利标题(中): 温度依赖LED电流控制器
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申请号: US11805525申请日: 2007-05-22
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公开(公告)号: US20080290804A1公开(公告)日: 2008-11-27
- 发明人: Hendrik Santo , Gurjit S. Thandi , Dilip S , Kien Vi
- 申请人: Hendrik Santo , Gurjit S. Thandi , Dilip S , Kien Vi
- 主分类号: H05B41/36
- IPC分类号: H05B41/36
摘要:
The present invention provides a controller for regulating current in LEDs in electronic displays. The controller uses temperature sensing diodes to detect changes in the LED ambient temperature. As the LED ambient temperature changes, the forward voltage of the temperature sensing diode decreases. A signal processor adjusts the current passing through the LEDs based on the temperature induced changes in the forward voltage of the temperature sensing diodes. The present invention can reduce costs over the present methods of regulating current in LEDs and may more easily be integrated into a single integrated circuit chip. The temperature sensing may also be implemented outside the integrated circuit chip.
公开/授权文献
- US07663326B2 Temperature dependant LED current controller 公开/授权日:2010-02-16
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