Patent ID: 9131177
Filing Date: 2015-09-08
Classification: H01L,H04N

Abstract:
1. A solid-state imaging device comprising: a plurality of pixels which are arranged in rows and columns on a same semiconductor substrate and each of which generates a pixel signal according to an amount of received light; a comparison circuit that is connected in common to the pixels in each of the columns and compares the pixel signal to a comparison signal that is a comparison criterion; a comparison signal generating unit configured to generate the comparison signal and provide the comparison signal in common to the comparison circuit in each column; and a signal conditioning circuit provided in a common signal path for providing the comparison signal from the comparison signal generating unit to the comparison circuit in each column, wherein the signal conditioning circuit includes: a source follower circuit that is provided to the signal path and includes a first current source having a transistor, and an amplification transistor having a gate oxide film that is thinner than a gate oxide film of the transistor; and a voltage control circuit that controls a drain-to-source voltage of the amplification transistor.