DOI QR코드

DOI QR Code

$256{\times}256$ 픽셀 어레이 저항형 지문센서

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

  • 정승민 (한신대학교 공과대학 정보통신학과)
  • 발행 : 2009.03.31

초록

본 논문에서는 개선된 회로를 적용한 $256{\times}256$ 픽셀 저항형 지문센서를 제안하고 있다. 단위 픽셀 수준의 센싱회로는 가변적인 전류를 전압으로 변환하여 이진 디지털 신호로 만든다. 정전기에 효과적으로 대처할 수 있는 인접 픽셀 간 전기적 차폐 레이아웃 구조를 제안하고 있다. 전체회로는 단위 센서 회로를 확장하여 ASIC 설계방식을 통하여 설계한 뒤 로직 및 회로에 대하여 모의실험을 하였다. 전체회로는 $0.35{\mu}m$ 표준 CMOS 공정규칙을 적용하여 센서블록은 전주문 방식을 적용하고 전체 칩은 자동배선 툴을 이용하여 반주문 방식으로 레이아웃을 실시하였다.

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.

키워드

참고문헌

  1. 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 , pp269 – 272, June 2006
  2. S.-M. Jung, J.-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 https://doi.org/10.1109/JSSC.2005.852019
  3. 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, pp274 – 280, Feb. 2003 https://doi.org/10.1109/JSSC.2002.807172
  4. 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
  5. http://www.atmel.com/products/Biometrics
  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