Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-03-27
2007-03-27
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C348S308000
Reexamination Certificate
active
10766012
ABSTRACT:
An imaging system includes a pixel that does not require a row select transistor. Instead, an operating voltage is selectively provided to the pixel's readout circuitry, and the readout circuitry provides output signals based on charge or voltage of a storage node. The operating voltage can be selectively provided to each row of a pixel array by a row driver. Each pixel includes a source follower transistor that provides an output signal on a column output line for readout. An anti-blooming transistor may be linked to each pixel's photosensor to provide an overflow path for electrons during charge integration, prior to transfer of charge to the pixel's storage node by a transfer transistor. Electrons not produced by an image are introduced to the photosensor prior to image acquisition, filling traps in the photosensor to reduce image degradation.
REFERENCES:
patent: 6184055 (2001-02-01), Yang et al.
patent: 2004/0174450 (2004-09-01), Lee
patent: 2005/0083421 (2005-04-01), Berezin
Altice, Jr. Peter P.
Bruce Jeffrey
Mauritzson Richard A.
Mckee Jeff A.
Shah Joey
Dickstein & Shapiro LLP
Ko Tony
Luu Thanh X.
Micro)n Technology, Inc.
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