Active pixel sensor with switched supply row select

Details Active pixel sensor with switched supply row select Active pixel sensor with switched supply row select

1997-02-27

1999-09-07

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

257291, 348308, H04N 314, H01L 2700

Patent

active

059490616

ABSTRACT:
A pixel architecture for economizing area within the pixel leaving a greater proportion of area for photodetector area. Area is saved by employing a method of generating row select signals for active pixel sensors comprising the steps of providing an active pixel sensor having a plurality of pixels arranged in columns and rows and selecting rows within the active pixel sensor by application of a supply voltage to a transistor circuit within a predetermined row to be selected and removal of the supply voltage from the transistor circuits of unselected rows.

REFERENCES:
patent: 5541402 (1996-07-01), Ackland et al.
patent: 5631704 (1997-05-01), Dickinson et al.
E. Fossum, "Active Pixel Sensors: Are CCD's Dinosaurs?", SPIE vol. 1900-08-819-1133 Jul. 1993.
R.H. Nixon, E.E. Kemeny, C.O. Staller, and E.R. Fossum, "128.times.128 CMOS Photodiode-type Active Pixel Sensor with On-chip Timing, Control and signal Chain Electronics." Proceedings of the SPIE vol. 2415, Charge-Coupled Devices and Solid State Optical Sensors V, paper 34 (1995).
H.S. Philip Wong, "Technology and Device Scaling Considerations for COS Imagers." IEEE Solid State Circuits Technology Workshop on CMOS Imaging Technology, Feb. 7, 1996, San Francisco, CA.

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