CCD imager having four-phase vertical shift registers operated b

Details CCD imager having four-phase vertical shift registers operated b CCD imager having four-phase vertical shift registers operated b

1994-02-15

1995-01-03

Mancuso, Joseph

Television

Camera, system and detail

Combined image signal generator and general image signal...

257221, H04N 5335

Patent

active

053790642

ABSTRACT:
A CCD imager includes at least one four-phase vertical shift register having first, second, third and fourth transfer electrodes. In order to prevent nonuniform distribution of smear charge and other unwanted charge, and improve the quality of a picture, there is further provided a means for making the potential well under each first electrode deeper than the potential wells under the second, third and fourth electrodes. Preferably, a N-type semiconductor region is formed under each first electrode by ion implantation.

REFERENCES:
patent: 4592130 (1986-06-01), Nash
patent: 4654682 (1987-03-01), Boudewijns
patent: 4656518 (1987-04-01), Kosonocky et al.
patent: 4689687 (1987-08-01), Koike et al.
patent: 4698657 (1987-10-01), Kamata
patent: 4910569 (1990-03-01), Erhardt

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