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http://dx.doi.org/10.6109/JKIICE.2009.13.3.531

Fingerprint Sensor Based on a Skin Resistivity with $256{\times}256$ pixel array  

Jung, Seung-Min (한신대학교 공과대학 정보통신학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.3, 2009 , pp. 531-536 More about this Journal
Abstract
In this paper, we propose $256{\times}256$ pixel array fingerprint sensor with an advanced circuits for detecting. The pixel level simple detection circuit converts from a small and variable sensing current to binary voltage out effectively. We minimizes an electrostatic discharge(ESD) influence by applying an effective isolation structure around the unit pixel. The sensor circuit blocks were designed and simulated in standard CMOS $0.35{\mu}m$ process. Full custom layout is performed in the unit sensor pixel and auto placement and routing is performed in the full chip.
Keywords
Ridge Resistivity; Fingerprint Sensor; VLSI circuit; ASIC; pixel; ESD;
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