公开(公告)号：US20130313985A1

公开(公告)日：2013-11-28

申请号：US13844592

申请日：2013-03-15

Applicant: Samsung Display Co., Ltd.

Inventor： Min-Soo CHOI ,  Won-Sik OH ,  Eun-Chul SHIN

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0854

Abstract: A method of driving a light source includes outputting a variable driving voltage to a light source part, sensing a first voltage based on the driving voltage and developed at a first end of the light source part, sensing a second voltage developed at a second end of the light source part due to current passing through the light source part and adjusting the driving voltage while using the first and second voltages so that power consumption by the light source part is substantially constant irrespective of temperature of the light source part and/or irrespective of a duty cycle ration being used to drive the light source part. Thus, a luminance of the light source part may be maintained at substantially uniform levels.

Abstract translation: 驱动光源的方法包括向光源部输出可变驱动电压，基于驱动电压感测出第一电压并在光源部的第一端显影，感测在第二端产生的第二电压 光源部分由于电流通过光源部分并且在使用第一和第二电压的同时调节驱动电压，使得光源部分的功率消耗基本上恒定，而与光源部分的温度无关，和/或与 用于驱动光源部分的占空比率。 因此，可以将光源部的亮度维持在基本均匀的水平。