Method for driving solid-state image pickup device

Details Method for driving solid-state image pickup device Method for driving solid-state image pickup device

2007-05-15

2007-05-15

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S249000, C348S367000

Reexamination Certificate

active

09317056

ABSTRACT:
A method to overcome a disadvantage that the signal charges decrease depending upon the storage time in a photo-electric conversion unit of a solid-state image pickup device. At the moment t2when a prescribed exposure time (t1−t2) passes, the incident light is cut off by a cut off means such as a mechanical shutter of an interlace solid-state image pickup device. Then, at the time t3, a voltage VBsub is applied to N−semiconductor substrate 107 to raise up the potential barrier Δφ of the vertical OFD for the signal charges, whereby the leakage of the signal charges due to the self-induced drift, or the thermal diffusion is suppressed. Then, signal charges are read out from the odd lines at the time t4,and signal charges are read out from the even lines at the time t5.

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