Capacitive fingerprint sensor and the panel thereof
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United States of America Patent
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Feb 16, 2010
Grant Date -
Jun 11, 2009
app pub date -
Dec 6, 2007
filing date -
Dec 6, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
. The first transistor is configured to precharge the reference capacitor. The second transistor is configured to precharge the fingerprint capacitor. The third transistor is configured to redistribute the charges of the reference capacitor and fingerprint capacitor. The fourth transistor is configured to output the voltage of the reference capacitor after redistribution.
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