Patent ID: 6437635
Filing Date: 2002-08-20
Classification: H04N

Abstract:
An amplifying solid state imaging device output circuit provided with a plurality of pixels, each pixel having a first source follower circuit comprised of a first MOS transistor that is formed on a semiconductor substrate and amplifies a photoelectric conversion signal from a photoelectric conversion element and a second MOS transistor used as a load that is formed on the semiconductor substrate and is connected to the first MOS transistor via a signal line, comprising:a third MOS transistor that is formed on the semiconductor substrate with a channel structure identical to that of a plurality of the second MOS transistors and has a gate and a drain connected to a plurality of gates of the second MOS transistors so as to form a current mirror circuit with the second MOS transistor; and a first load that is formed on the semiconductor substrate and provided for flowing a roughly constant current through the third MOS transistor.