Thin film transistor type fingerprint sensor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Jan 3, 2002
app pub date -
May 22, 2001
filing date -
Jun 23, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A fingerprint-sensing device of thin film transistor type that is capable of minimizing an insulation breakage between thin film transistor lines includes a sensor for sensing contact of a fingerprint to the sensor array and for generating a sensing signal when said fingerprint is in contact with the sensor array. In the device, a sensor array converts a light reflected from a fingerprint into a current quantity upon contact of the fingerprint. A driving voltage supply applies a driving voltage to the sensor array. A controller responds to the sensing signal from the sensor to generate control signals for controlling the driving voltage supply.
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