Semiconductor device manufacturing: process – Making device or circuit responsive to nonelectrical signal – Responsive to electromagnetic radiation
Reexamination Certificate
2011-02-01
2011-02-01
Malsawma, Lex (Department: 2892)
Semiconductor device manufacturing: process
Making device or circuit responsive to nonelectrical signal
Responsive to electromagnetic radiation
C257SE21185
Reexamination Certificate
active
07879642
ABSTRACT:
A sensor having photodiodes whose sensitivity and storage capacity can be increased is provided. The sensor is formed by arranging the photodiodes in an array with first region of second conductivity type is formed on the principal surface of a substrate of a first conductivity type. A pixel separating region of the first conductivity type is formed to penetrate through the first semiconductor region to separate the regions of the adjacent photodiodes. A second region of the second conductivity type used to drain excess charge is formed in substrate at a position away from the junction surface between substrate and the first region and below the junction surface.
REFERENCES:
patent: 5118631 (1992-06-01), Dyck et al.
Mori Karuya
Shimada Hidetoshi
Brady III Wade J.
Malsawma Lex
Patti John J.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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