CMOS-type photodetector for improved charge transfer from...

Details CMOS-type photodetector for improved charge transfer from... CMOS-type photodetector for improved charge transfer from...

2006-01-10

2006-01-10

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C257S292000

Reexamination Certificate

active

06984817

ABSTRACT:
A photodetector formed in an active area of a semiconductor substrate of a first conductivity type, including a MOS transistor and a photodiode formed of the junction between the substrate and a region of a second conductivity type also forming the source of the MOS transistor, a heavily-doped layer of the first conductivity type covering the source region and a portion of the substrate, said portion of the substrate being delimited by an opening of the source region extending in a centered manner from the side of the source region opposite to the channel region of the transistor, towards this channel region.

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