Image sensor having charge storage regions.

摘要

An image sensor includes a plurality of potential monitoring transistors (T21 - T24, T31 - T34) connected to respective floating electrodes (71 - 74) for separately monitoring changes in potential of the respective floating electrodes. In addition, the image sensor includes an output circuit (T25 - T27, R21; T35 - T37, R31) for producing an output signal (Vo(max), Vo(min)) which varies in accordance with one of the monitored potentials which is one of the highest potential and the lowest potential.