Photoelectric conversion device

Details Photoelectric conversion device Photoelectric conversion device

Filed on

2005-08-17

Date issued

2009-06-16

Examiner

Phasge, Arun S (Department: 1795)

Patent Class

Radiant energy

SubClass

Photocells; circuits and apparatus

SubSubClass

Photocell controlled circuit

Other Related Categories

C250S214100, C348S308000, C257S443000

Type

Reexamination Certificate

Status

active

Patent number

07547871

Description

ABSTRACT:
A photoelectric conversion device formed on a single semiconductor substrate, including: a plurality of photoelectric conversion elements; a read-out circuit including a switch for reading out analog signals from the photoelectric conversion elements; a buffer circuit for driving the switch; and a logic circuit for processing digital signals. A first semiconductor area to which a ground level for the buffer circuit is supplied and a second semiconductor area to which a ground level for the logic circuit is supplied are electrically separated from each other.

REFERENCES:
patent: 4556908 (1985-12-01), Ida
patent: 4959723 (1990-09-01), Hashimoto
patent: 5264727 (1993-11-01), Kudou et al.
patent: 5336915 (1994-08-01), Fujita et al.
patent: 5537075 (1996-07-01), Miyazaki
patent: 6081350 (2000-06-01), Aizawa et al.
patent: 6452632 (2002-09-01), Umeda et al.
patent: 2001/0023949 (2001-09-01), Johnson et al.
patent: 2003/0164887 (2003-09-01), Koizumi et al.
patent: 0 541 332 (1993-05-01), None
patent: 0 905 788 (1999-03-01), None
patent: 63 055980 (1988-03-01), None
Patent Abstracts of Japan, vol. 013, No. 243 (Jun. 7, 1989), of Kokai 01-044131A (Feb. 16, 1989).

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