Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1995-03-22
1996-10-08
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
257225, 348311, H01L 29765
Patent
active
055634044
ABSTRACT:
In accordance with the invention, a full frame solid-state image sensor with altered accumulation potential comprises a substrate that includes a semiconductor of one conductivity type and has a surface at which is situated a photodetector that comprises a first storage area and a second storage area. The first and second storage areas each comprise a CCD channel of conductivity type opposite to the conductivity type of the semiconductor, and the channel comprises an uppermost region of opposite conductivity type to the remainder of the CCD channel. A first barrier region separates the first storage area from the second storage area, and a second barrier region separates the second storage area from an adjacent photodetector; the second barrier region is shallower than the first barrier region. Adjacent to one side of the photodetector is a channel stop of the same conductivity type as the semiconductor. A first and a second gate each comprising a conductive layer overlie the CCD channel, and a dielectric is interposed between the conductive layer and the CCD channel. In the method of the invention, the uppermost region of the CCD channel is doped with a dopant of conductivity opposite to the conductivity of the CCD channel, thereby lowering the accumulation potential.
REFERENCES:
patent: 3402081 (1968-09-01), Lehman
patent: 3895966 (1975-07-01), MacDougall et al.
patent: 3912545 (1975-10-01), Armstrong
patent: 4503450 (1985-03-01), Brewer
patent: 4613402 (1986-09-01), Losee et al.
patent: 4808834 (1989-02-01), Kimata
patent: 4997784 (1991-03-01), Thenoz et al.
patent: 5086342 (1992-02-01), Spies et al.
patent: 5241198 (1993-08-01), Okada et al.
patent: 5262661 (1993-11-01), Kuroda et al.
patent: 5324968 (1994-06-01), Ciccarelli et al.
Eastman Kodak Company
Lee John R.
Leimbach James D.
Westin Edward P.
LandOfFree
Full frame CCD image sensor with altered accumulation potential does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Full frame CCD image sensor with altered accumulation potential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full frame CCD image sensor with altered accumulation potential will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-59322