Patent ID: 9377899
Filing Date: 2016-06-28
CPC Classification: G06F,H03K

Claim Text:
1. An optical sensing type built in touch control screen panel, comprising an array substrate having a plurality of pixel units arranged in a matrix, wherein: the array substrate has touch control scanning lines between adjacent rows of the pixel units; the array substrate has touch control reading lines between adjacent columns of the pixel units; the array substrate has a photosensitive transistor and a touch control switch unit in a region defined by the touch control scanning lines and the touch control reading lines; the photosensitive transistor has a drain connected with the touch control switch unit, the touch control switch unit is connected with the touch control scanning line and the touch control reading line, respectively, so as to control ON/OFF between the drain of the photosensitive transistor and the touch control reading line, and the array substrate has a constant voltage signal line applying a reverse bias voltage to the photosensitive transistor; the photosensitive transistor has a gate and a source connected respectively with the constant voltage signal line, so that the photosensitive transistor does not output a signal without laser irradiation.