Patent ID: 7348531

Claim:
A photoelectric conversion device using electron emission devices, comprising: a photoelectric conversion film for receiving incident light on one side thereof; a field emission layer including electron emission devices which have respective electron emitting regions apart from and facing the other side of the photoelectric conversion film; a drive layer formed on a back side of the field emission layer and including a plurality of device drive circuits; and first and second scanning circuits for providing scanning pulses to the device drive circuits so as to select the device drive circuits in a sequential manner, wherein each of the electron emission devices includes: a back electrode connected to the corresponding device drive circuit; an electron supply layer composed of a semiconductor and formed on the back electrode; an insulating film formed over the electron supply layer; and an electrode layer formed over the insulating film and connected to a voltage source that applies a constant-voltage to the electrode layer, and wherein each of the selected drive circuits supplies a drive pulse to the corresponding back electrode of one or more of the electron emission devices in response to the scanning pulses provided by the first and second scanning circuits.