CMOS image sensor based on four transistor photocell

Details CMOS image sensor based on four transistor photocell CMOS image sensor based on four transistor photocell

1998-04-21

2000-07-18

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

External effect

Light

250200, 2502081, H01L 3100

Patent

active

060912804

ABSTRACT:
An image sensing cell includes: a light sensing device 18; a first transistor 10 having a first node coupled to the light sensing device 18; a second transistor 12 having a first node coupled to a second node of the first transistor 10; a third transistor 14 having a control node coupled to the light sensing device 18; and a fourth transistor 16 having a first node coupled to a first node of the third transistor.

REFERENCES:
patent: 5113077 (1992-05-01), Shimizu et al.
patent: 5354980 (1994-10-01), Rappoport
patent: 5572407 (1996-11-01), Standley
patent: 5742047 (1998-04-01), Buhler et al.

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