Patent ID: 7573016
Filing Date: 2009-08-11
Classification: H04N

Abstract:
1. An amplification type solid-state imaging device in which a photoelectric conversion and transfer portion having a photoelectric transducer and a transfer transistor for transferring a signal charge of the photoelectric transducer is provided for each pixel, wherein a plurality of photoelectric conversion and transfer portions provided for the pixels are grouped in a group of a prescribed number of photoelectric conversion and transfer portions, the device comprises: a switched capacitor amplifier portion which is provided for each of the photoelectric conversion and transfer portion group and has an input side connected to an output side of each transfer transistor of the photoelectric conversion and transfer portion group and an output side connected to a signal line; a power source side load connected to the output side of the switched capacitor amplifier portion via the signal line; a switchover portion for switching the power source side load, which is connected to the signal line, to a constant voltage portion; and a control section that controls the transfer transistor, the switched capacitor amplifier portion and the switchover portion, the switched capacitor amplifier portion comprises: a signal charge storage portion connected to the output side of each transfer transistor of the photoelectric conversion and transfer portion group; an amplification transistor that has an input side connected to the signal charge storage portion and an output side connected to the signal line; a capacitance element connected between input and output of the amplification transistor; and a reset transistor connected between input and output of the amplification transistor, and an input side voltage of the inverting amplifier constructed of the amplification transistor of the switched capacitor amplifier portion and the power source side load is controlled by controlling the reset transistor of the switched capacitor amplifier portion and the switchover portion by means of the control section.