High dynamic range segmented pixel sensor array

Details High dynamic range segmented pixel sensor array High dynamic range segmented pixel sensor array

1997-01-22

1998-08-04

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

257291, 257440, H01L 3100

Patent

active

057897379

ABSTRACT:
A photodiode sensor for use as a pixel element of a sensor array includes the sensor area segmented into a plurality of discrete portions. Each discrete portion has a distinctive responsiveness to incident illumination, either with regard to capacitance or sensitivity. The portions are in common communication with a data line for generating a sum charged output representative of the illumination on the cumulative sensor portions. Since the dynamic range of the cumulative discrete portions is greater than any single one sensor portion, a wider dynamic range for sensor operability is achieved.

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Street, et al., "Amorphous Silicon Arrays Develop a Medical Image", IEEE, Circuits and Devices, Jul. 1993, pp. 38-42.

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