SOLID STATE IMAGING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a solid state imaging device which is capable of discharging unwanted charge into an overflow drain even when unwanted charge exceeding the maximum amount of charge to handle is transferred to a horizontal transfer region under a final storage electrode and restraining the unwanted charge from leaking out after the horizontal transfer region adjacent to the final storage electrode. SOLUTION: The horizontal transfer region 4 is tapered (both ends are tapered) so as to improve the charge detection sensitivity of a floating diffusion layer 3 which converts signal charge to voltage signals, and an overflow barrier 5 and the overflow drain 6 are provided adjacent to the final storage electrode 8a of the horizontal transfer region 4 along the shape of the horizontal transfer region 4. COPYRIGHT: (C)2004,JPO&NCIPI