NOISE DECREASE TYPE CCD STRUCTURE

摘要

The CCD improves the dynamic range by reducing noise in the surface traps. The CCD comprises (A) a p-type well (2) on the n-type substrate (1); (B) a BCCD region (3) formed by implantation of n-type ions; (C) the first potential barrier (4) formed by injecting p-type ions on the BCCD region; (D) gate oxide (7) on the first potential barrier; (E) the first and second polygate (6) on the gate oxide (7) and the second potential barrier formed by injecting p-type ions beneath the BCCD region.