| US 7,348,531 B2 | ||
| Photoelectric conversion device and image pickup device using electron emission devices | ||
| Yoshiyuki Okuda, Tsurugashima (Japan); Saburo Aso, Koufu (Japan); Katsumi Yoshizawa, Koufu (Japan); Takamasa Yoshikawa, Tsurugashima (Japan); Hideo Satoh, Tsurugashima (Japan); Nobuyasu Negishi, Tsurugashima (Japan); and Kazuto Sakemura, Tsurugashima (Japan) | ||
| Assigned to Pioneer Corporation, Tokyo (Japan) | ||
| Filed on Feb. 09, 2005, as Appl. No. 11/53,202. | ||
| Claims priority of application No. 2004-034942 (JP), filed on Feb. 12, 2004. | ||
| Prior Publication US 2005/0184220 A1, Aug. 25, 2005 | ||
| Int. Cl. H01L 27/00 (2006.01); H01L 31/00 (2006.01); H01L 29/06 (2006.01); G09G 3/20 (2006.01); H01J 9/02 (2006.01) | ||
| U.S. Cl. 250—208.1 [250/214.1; 257/10; 345/74.1; 313/310] | 19 Claims |
| 1. 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.
|