DocumentCode
436005
Title
A high sensitivity capacitive fingerprint sensor with double sensing plates
Author
Wu, Jing ; Wang, Xinan ; Xiong, Congqing ; Ye, Jun
Author_Institution
Shenzhen SOC Lab, Peking Univ., Shenzhen, China
Volume
2
fYear
2004
fDate
18-21 Oct. 2004
Firstpage
1571
Abstract
This paper introduces a single-chip capacitive fingerprint sensor implemented in a standard CMOS technology. The fingerprint pattern is captured by detecting the different values of the capacitors composed of the skin surface and the electrode in the device. The sensor is comprised of an array of sensing cells. Each cell contains a high sensitive readout circuit and a sensing device, which has double metal plates to detect the small capacitance.
Keywords
CMOS integrated circuits; capacitance measurement; capacitive sensors; fingerprint identification; capacitance detection; capacitive fingerprint sensor; double sensing plate; fingerprint identification; sensing cell array; standard CMOS technology; CMOS technology; Capacitive sensors; Capacitors; Ceramics; Chromium; Circuits; Electrodes; Fingerprint recognition; Fingers; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN
0-7803-8511-X
Type
conf
DOI
10.1109/ICSICT.2004.1436920
Filename
1436920
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