Bulk charged modulated device (BCMD) image sensors with increased dynamic range
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United States of America Patent
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Nov 28, 1995
Issued Date -
N/A
app pub date -
May 19, 1994
filing date -
Oct 30, 1992
priority date (Note) -
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Abstract
An image array with improved dynamic range has at least one photosite, at least one column sense line and at least one column clamp transistor. A source of the photosite is coupled to the column sense line. A source of the column clamp transistor is coupled to the photosite source. A drain of the column clamp transistor is coupled to a drain of the photosite. A gate of the column clamp transistor is provided for application of a .phi..sub.cc signal. The .phi..sub.cc signal is coupled through a capacitance to the column sense line.
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