Charge detection node with reset feed-through shielding gate

Details Charge detection node with reset feed-through shielding gate Charge detection node with reset feed-through shielding gate

2006-02-21

2006-02-21

Sohn, Seung C. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C327S091000

Reexamination Certificate

active

07002129

ABSTRACT:
The charge detection device includes a floating diffusion, a reset transistor, a feed through shielding transistor, and a bias tracking voltage reference generator for biasing an output diode. The reset feed through shielding transistor gate overlaps the reset transistor gate to minimize the reset feed through. The bias tracking voltage reference generator output is adjusted such as to set a predetermined reset time constant for the device and to optimize the detection node performance by minimizing the charge spill back during the reset transistor turning off interval.

REFERENCES:
patent: 2002/0017646 (2002-02-01), Hynecek
J.P. Theuwissen, “Solid-State Imaging with Charge-Couple Devices” Kluwer Academic Publishers, pp.l 76-79, 1995.

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