Method for controlling a photosensitive device with low image retention, and photosensitive device implementing same
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Sep 3, 1999
filing date -
Mar 7, 1997
priority date (Note) -
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Abstract
A drive process for an array of photosensitive points produced on a semiconductor material. Each of the points has a photodiode connected in series with a switch element. The photodiode is reverse-biased and produces charges when it is exposed to a light signal during an imaging phase. Before the imaging phase, the photosensitive points are illuminated with an additional light flux whose intensity causes the photodiode to conduct in the forward direction and then in applying a biasing pulse to the photosensitive points in order to return the photodiode to reverse bias. Thus, a current is produced which has the effect of reducing a remanence effect in the semiconductor material.
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