Patent ID: 7486320
Filing Date: 2009-02-03
Classification: A01C,H04N

Abstract:
1. A photoelectric conversion device comprising: a plurality of pixels each having a photoelectric conversion area which converts a light signal into an electrical signal; a plurality of signal output lines through which electrical signals are generated at the photoelectric conversion areas, to be read out from the plurality of pixels; and a plurality of amplification circuits provided in correspondence to the plurality of signal output lines for amplifying the electrical signals, respectively, the plurality of amplification circuits including at least one constant current circuit portion and being disposed in a predetermined direction, and wherein the constant current circuit portion includes at least a field effect transistor, and a direction of a channel length of the field effect transistor is different from the direction of disposition of the amplification circuits, wherein the field effect transistor is a source grounded field effect transistor, and wherein a channel length of the source grounded field effect transistor is longer than a pitch of repetition disposition of the amplification circuits.