Image pick-up apparatus having a charge coupled device with mult

Details Image pick-up apparatus having a charge coupled device with mult Image pick-up apparatus having a charge coupled device with mult

1995-06-06

1998-05-26

Garber, Wendy

Television

Camera, system and detail

Combined image signal generator and general image signal...

348312, 348317, H04N 314

Patent

active

057574278

ABSTRACT:
An image pickup apparatus having a charge coupled device which comprises charge transfer channels having a photoelectric conversion function and a charge transfer function of the present invention has the structure that the charge transfer channels comprise transfer electrodes formed and arranged on a channel layer for transferring signal charges along with a charge transfer direction and a barrier layer formed on a part of the channel layer region underneath the transfer electrodes, and further comprising a driver for applying the CCD, in a case of taking image, a pinning voltage to the all transfer electrodes, whereby signal charges generated by incident light are accumulated in potential wells equivalent to pixels generated in the channel layer region where the barrier layer is not formed, and in a case of transferring charges, for applying two-phase clock having a "L" level of a pinning voltage and a "H" level of a predetermined voltage higher than the pinning voltage is applied to the transfer electrodes to mix signal charges accumulated in the adjacent two potential wells, whereby each mixed signal is isolated and transferred.

REFERENCES:
patent: 3932775 (1976-01-01), Kosonocky
patent: 4031315 (1977-06-01), Pfleiderer
patent: 4486783 (1984-12-01), Tanaka et al.
patent: 4760453 (1988-07-01), Hieda
patent: 4794279 (1988-12-01), Yamamura et al.
patent: 4995061 (1991-02-01), Hynecek
patent: 5008758 (1991-04-01), Burke
patent: 5115458 (1992-05-01), Burkey et al.
patent: 5325412 (1994-06-01), Stekelenburg
Saks, A Technique for Suppressing Dark Current Generated by Interface States in Buried Channel CCD Imagers, IEEE Electron Device Letters, vol. EDL-1, No. 7, Jul. 1980, pp. 131-133.

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