Direct-type back light module with photo sensors
A direct-type backlight module with photo sensors has a plurality of lamps, a plurality of the photo sensors for detecting illumination of corresponding lamps, a comparative and arithmetic unit for processing signals generated by the photo sensors, and a main lamp driving loop for receiving feedback signals generated by the comparative and arithmetic unit and adjusting a lamp current voltage outputted by a minor lamp driving loop of each lamp, so as to achieve an uniform illumination of each lamp.
AU Optronics Corp.
G
G02B
inventional
Chien-Jen Chao-Pao
Chang Chuang