Pixel cells having integrated analog memories and arrays thereof
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United States of America Patent
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Sep 15, 1998
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app pub date -
Jan 3, 1995
filing date -
Jan 3, 1995
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Abstract
Image transduction device pixel cells are described which have analog memory integrated with the pixel transduction elements and arrays made from such pixel cells. The integrated pixel cells are capable of storing information which, for example, can achieve a desired transduction transfer function for a given pixel transduction element. While the present invention may be used with any type of continuously variable, settable, and nonvolatile analog memory, the analog memory is beneficially based on a ferroelectric gate transistor comprised of an amorphous silicon transistor integrated with a ferroelectric gate dielectric layer or an amorphous silicon transistor with a charge storage dielectric gate layer.
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