Patent ID: 8269751

Claim:
A photo element, comprising: a photo thin-film transistor, for inducing a photo-induced current; a readout line, for reading the photo-induced current; a switch thin-film transistor, for controlling whether the photo-induced current is read or not, the source of the switch thin-film transistor being connected to said readout line, the gate of the switch thin-film transistor being connected to a first switch line, and the drain of the switch thin-film transistor being connected to the source of said photo thin-film transistor; a bias line, the gate and the drain of the photo thin-film transistor being connected to said bias line; and a compensation thin-film transistor, the gate and the drain of said compensation thin-film transistor being connected to a second switch line, the source of the compensation thin-film transistor being connected to the drain of said switch thin-film transistor.