Patent ID: 6849853

Claim:
An X-ray flat panel detector comprising: an X-ray photosensitive film which generates signal charges upon being exposed to incident X-rays; a plurality of pixel electrodes which are two-dimensionally arrayed in contact with said X-ray photosensitive film; a bias voltage application unit which applies a bias voltage to said X-ray photosensitive film so as to make said plurality of pixel electrodes collect holes or electrons, which serve as the signal charges generated by said X-ray photosensitive film and have a higher mobility; a plurality of capacitors which are arranged in correspondence with said pixel electrodes and store the charges generated by said X-ray photosensitive film; a plurality of switching thin-film transistors which are arranged in correspondence with said pixel electrodes and read the charges stored in said capacitors; a plurality of scanning lines which supply a control signal to OPEN/CLOSE-control said plurality of switching thin-film transistors; and a plurality of signal lines which are connected to said plurality of switching thin-film transistors to read the charges when said switching thin-film transistors are opened.