Amplification type solid-state image pickup device and driving method therefor

摘要

A plurality of pixel groups(X(n)) each comprising a plurality of pixels(10) are set, and switched capacitor amplification parts(20) are provided in correspondence to the pixel groups (X(n)), respectively. Each of the switched capacitor amplification parts(20) has a charge detection node(8) to which output terminals of the transfer transistors(2) of a corresponding pixel group(X(n)) are connected in common, an amplification part(3), a reset transistor(6), a first capacitance element(7), and a select transistor(5). A load part(21) common to the switched capacitor amplification parts(20) is provided. The load part(21) is combined with the amplification parts(3) of the switched capacitor amplification parts(20) to constitute inverting amplifiers, respectively. By means of the above constitution, it is capable of obtaining a noise-reduced, high-quality image and which allows transistor count per pixel to be cut, thus allowing the pixel size to be reduced.