CMOS image sensors have charge storage capacitors connected to various light
sensitive and/or electrical elements. The capacity of the capacitors used for each
pixel is tailored to the color to be detected. Charge storage capacitors may be
formed entirely over a field oxide region of the CMOS imager, entirely over an
active area of a pixel sensor cell, or partially over a field oxide region and
partially over an active pixel area of a pixel sensor cell.
