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Design of a Fingerprint Authentication Sensor with 128${\times}$144 pixel array  

정승민 (연세대학교 전기전자공학과)
김정태 (목원대학교 IT공학부)
이문기 (연세대학교 전기전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.7, no.6, 2003 , pp. 1297-1303 More about this Journal
Abstract
This paper propose an advanced circuit for fingerprint sensor signal processing. We increased the voltage between ridge and valley by modifying the parasitic capacitance eliminating circuit of sensor plate. The analog comparator was designed for comparing the sensor signal voltage with the reference signal voltage. We also propose an effective isolation strategy for removing noise and signal coupling, ESD of each sensor pixel. The 128${\times}$l44 pixel fingerprint sensor circuit was designed and simulated, and the layout was performed.
Keywords
fingerprint; sensor; pixel; capacitive type;
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  • Reference
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