Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2008-05-27
2008-05-27
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S2140RC, C257S290000, C257S445000, C348S294000, C348S302000
Reexamination Certificate
active
11055105
ABSTRACT:
A method of operating an imager pixel that includes the act of applying a relatively small voltage on the gate of a transfer transistor during a charge acquisition period. If a small positive voltage is applied, a depletion region is created under the transfer transistor gate, which creates a path for dark current electrons to be transferred to a pixel floating diffusion region. The dark electrons are subsequently removed by a pixel reset operation. If a small negative voltage is applied to the transfer gate, electrons that would normally create dark current problems will instead recombine with holes thereby substantially reducing dark current.
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Agranov Gennadiy
Altice Peter Parker
Li Xiangli
Mauritzson Rick
Bui-Pho Pascal M
Dickstein & Shapiro LLP
Epps Georgia
Micro)n Technology, Inc.
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