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A Robust Resistive Fingerprint Sensor
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 Title & Authors
A Robust Resistive Fingerprint Sensor
Jung, Seung-Min;
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 Abstract
A novel sensing scheme using resistive characteristics of the finger is proposed. ESD problem is more harmful than a capacitive fingerprint sensor in a resistive fingerprint sensor, because the sensor plate is directly connected to the sensing cell. The proposed circuit is more robust than conventional circuit for ESD. The sensor plate and sensing cell are isolated by capacitor. The pixel level simple detection circuit is fully digital operation unlike that of the capacitive sensing cell. The sensor circuit blocks are designed and simulated in a standard CMOS process. The proposed circuit is more stable and effective than a typical circuit.
 Keywords
Resistive Fingerprint Sensor;ESD;Detection Circuit;VLSI;Ridge;Valley;
 Language
English
 Cited by
1.
Design of Low Power Capacitive Sensing Circuit with a High Resolution in CMOS Technology,;

Journal of information and communication convergence engineering, 2011. vol.9. 3, pp.301-304 crossref(new window)
 References
1.
Seung-Min Jung, "Design of Circuit for a Fingerprint Sensor Based on Ridge Resistivity," International Journal of KIMICS, Vol. 6, No.3, September 2008

2.
Yves Audet, Laurent Aubray, Dominique Blouin, "A CMOS Fingerprint Sensor Based on Skin Resistivity," Circuits and Systems, 2006 IEEE North-East Workshop on Volume, Issue, pp 269-272, June 2006

3.
S.-M. Jung, l-M. Nam, D.-H. Yang, and M.-K Lee "A CMOS Integrated Capacitive Fingerprint Sensor With 32-bit RISC Microcontroller," IEEE Journal of Solid-State Circuits, vol. 40, no. 8, pp. 1745-1750, Aug. 2005 crossref(new window)

4.
R. Hashido, A. Suzuki, A. Iwata, T. Okamoto, Y. Satoh, A. Inoue, "A capacitive fingerprint sensor chip using low-temperature poly-Si TFTs on a glass substrate and a novel and unique sensing method", IEEE J. of Solid-state circuits, vol. 38, No.2, pp 274 - 280, Feb. 2003 crossref(new window)

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6.
Olavarrieta Fritsche, G., Nakano Miyatake, M., "A simple fingerprint sensor based on ridge conductivity," Design of Mixed-Mode Integrated Circuits and Applications, 1999. Third International Workshop on, Volume, Issue, 1999, pp207-209, 1999

7.
Thomson-CSF, "FCDEM02: 500dpi Sweep Fingerprint Sensor," FingerChip Family Datasheet, May 1997