Keywords
Citation
(2003), "Transistor Fingerprint Sensor", Sensor Review, Vol. 23 No. 4. https://doi.org/10.1108/sr.2003.08723dad.011
Publisher
:Emerald Group Publishing Limited
Copyright © 2003, MCB UP Limited
Transistor Fingerprint Sensor
Transistor Fingerprint Sensor
Applicant: Tea Hwan Yoon and Jae Kyun Lee, Korea Patent number: US2002000915Publication date: 3 January 2002Title: Thin film transistor type fingerprint sensor
Keywords: Fingerprints, Sensors
This patent relates to a thin film transistor type fingerprint sensor that is capable of minimizing an insulation breakage between the thin film transistor lines. The device includes: a sensor array for converting a light reflected from a fingerprint into a current quantity upon contact of the fingerprint; a driving voltage supply means for the sensor array; a sensor for sensing the contact of the fingerprint with the sensor; and a controller for responding to the said sensing signal from the sensor to generate control signals for controlling the driving voltage supply means. The sensor comprises first and second sensing electrodes formed from a transparent electrode on the sensor array. These are in a conductive state when the fingerprint is in contact with the sensor array.