Patent ID: 8735794
Filing Date: 2014-05-27
Classification: H01L

Abstract:
1. A charge-coupled device (CCD) image sensor including a plurality of photodetectors and a plurality of vertical CCD shift registers, wherein gate electrodes are disposed over the vertical CCD shift registers and the gate electrodes are divided into distinct groups of gate electrodes, the CCD image sensor comprising: means for applying at a first time step an intermediate clock signal having a first voltage level to a fraction of the gate electrodes in each distinct group of gate electrodes; and means for applying at a second time step a transfer clock signal having a different second voltage level to a fraction of the gate electrodes clocked by the intermediate clock signal at the first time step and applying an accumulation clock signal having a different third voltage level to the remaining portion of the gate electrodes clocked by the intermediate clock signal at the first time step such that a voltage transition on the gate electrodes clocked by the accumulation clock signal substantially compensates a voltage transition on the gate electrodes clocked by the transfer clock signal.