Active pixel with a pinned photodiode

Details Active pixel with a pinned photodiode Active pixel with a pinned photodiode

1998-01-08

1999-03-09

Tran, Minh Loan

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Charge transfer device

257291, 257292, H01L 31062

Patent

active

058804951

ABSTRACT:
An active pixel for use in an imaging array and formed in a semiconductor substrate having a first conductivity type. The active pixel comprises: a pinned photodiode formed in the semiconductor substrate; a transfer well having a second conductivity type formed in the substrate, the transfer well being adjacent to the pinned photodiode; a transfer gate adjacent the transfer well, the transfer gate for controlling the flow of a signal charge from the pinned photodiode through the transfer well and under the transfer gate; and an output well adjacent the transfer gate for receiving the signal charge and routing the signal charge to output circuitry.

REFERENCES:
patent: 5471515 (1995-11-01), Fossum et al.
patent: 5625210 (1997-04-01), Lee et al.

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