Invention Grant
- Patent Title: Temperature dependant LED current controller
- Patent Title (中): 温度依赖LED电流控制器
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Application No.: US11805525Application Date: 2007-05-22
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Publication No.: US07663326B2Publication Date: 2010-02-16
- Inventor: Hendrik Santo , Gurjit Thandi , Dilip S , Kien Vi
- Applicant: Hendrik Santo , Gurjit Thandi , Dilip S , Kien Vi
- Applicant Address: US CA Santa Clara
- Assignee: mSilica Incorporated
- Current Assignee: mSilica Incorporated
- Current Assignee Address: US CA Santa Clara
- Agency: Turocy & Watson, LLP
- Agent Vinay Joshi
- Main IPC: H05B37/02
- IPC: H05B37/02

Abstract:
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.
Public/Granted literature
- US20080290804A1 Temperature dependant LED current controller Public/Granted day:2008-11-27
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