Solid state image pickup device

Details Solid state image pickup device Solid state image pickup device

H - Electricity

01

L

345/1

H01L 27/14 (2006.01) H01L 27/146 (2006.01) H04N 3/15 (2006.01)

Patent

CA 1162280

- 1 - Abstract: A solid state image pickup device has a photoelectric converting element unit that is not connected directly to a switching MOS transistor but to an amplifying MOS transistors More specifically, the device comprises a group of photo- electric converting solid state elements comprising a two dimensional array on a semiconductor substrate of a plurality of solid state elements corresponding to respective picture cells and each including a photoelectric converting element and first, second and third field effect transistors such that the photoelectric converting element has its first electrode connected to the gate electrode of the second field effect transistor, the source electrode of the second field effect transistor is connected to the drain electrode of the first field effect transistor, the drain electrode of the second field effect transistor is either grounded or connected with a power supply, the third field effect transistor has its drain electrode connected to the gate electrode of the second field effect transistor, and the source electrode of the third field effect transistor is either grounded or connected to a power supply. The array is such that a predetermined number of the gate electrodes of the first field effect transistors are commonly connected to provide a first selection line, the source electrodes of the first field effect transistors are commonly connected to provide a second selection line, and the gate electrodes of the third field effect transistors are connected with a reset pulse generator. The result is a device showing marked improvements of sensitivity, signal to noise ratio and avoidance of blooming.

384144

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