Patent ID: 6977363

Claim:
A correlated double sampling circuit for processing signals output from a pixel section where solid-state image sensing devices are arranged like a matrix, the circuit comprising: a first capacitor for sampling and holding reset level signals corresponding to noise produced by resetting the pixel section; a second capacitor for sampling and holding detected signals obtained by a photoelectric conversion in the pixel section; a connection switch for sampling for controlling connection between predetermined power supply which generates predetermined potential to sample the detected signals with the predetermined potential as reference and the second capacitor; and a connection switch for reading for controlling reading of output signals according to a difference between the detected signals and the reset level signals obtained from electric charges sampled and held in the second capacitor and the first capacitor, wherein a width of a gate of a switching element included in the connection switch for sampling is narrower than a width of a gate of a switching element included in the connection switch for reading.