发明申请
US20080170012A1 System and method for controlling a multi-string light emitting diode backlighting system for an electronic display
有权
用于控制用于电子显示器的多串发光二极管背光系统的系统和方法
- 专利标题： System and method for controlling a multi-string light emitting diode backlighting system for an electronic display
- 专利标题（中）： 用于控制用于电子显示器的多串发光二极管背光系统的系统和方法
-
申请号： US11652736申请日： 2007-01-12
-
公开(公告)号： US20080170012A1公开(公告)日： 2008-07-17
- 发明人: Dilip S , Gurjit S. Thandi , Hendrik Santo , Kien Vi
- 申请人： Dilip S , Gurjit S. Thandi , Hendrik Santo , Kien Vi
- 主分类号： G09G3/32
- IPC分类号： G09G3/32
摘要：
The present invention relates to displays that use LED strings for backlighting. A lead string is provided with continuous drive voltage and the non-lead strings are provided with pulsed drive pulses. The string having the highest forward voltage is selected as the lead string. Feedback information indicative of the currents flowing through the non-lead strings is used to determine the duty cycles of the voltage pulses provided to drive the non-lead strings. The non-lead strings are controlled using pulsed drive voltages to minimize power dissipation in the circuit.
公开/授权文献
信息查询
IPC分类:
