CCD imager

Details CCD imager CCD imager

1989-07-21

1991-05-07

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821331, H04N 314

Patent

active

050141325

ABSTRACT:
A CCD imager includes a large number of light receiving sections each having in turn a semiconductor surface region of a second conductivity type, a first semiconductor region of a first conductivity type, a semiconductor region of the second conductivity type and a second semiconductor region of the first conductivity type, vertically. The second semiconductor region is formed by a dual structure of the low concentration semiconductor region and the high concentration semiconductor region. The dual structure provides for shuttering at a lower voltage since the potential barrier along the depth of the light receiving section is no longer affected by the amount of the stored charges, while spreading of the depletion layer at the junction is suppressed by the high concentration semiconductor region.

REFERENCES:
patent: 4229754 (1980-10-01), French
patent: 4245164 (1981-01-01), Funahashi
patent: 4247862 (1981-01-01), Klein
patent: 4348690 (1982-09-01), Jastrzebski et al.
patent: 4912560 (1990-03-01), Osawa et al.

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