DocumentCode :
1989189
Title :
A Novel Capacitive Sensing Scheme for Fingerprint Acquisition
Author :
Sheu, Meng-Lieh ; Lai, Chih-Kuan ; Hsu, Wei-Hung ; Yang, Hong-Ming
Author_Institution :
Department of Electrical Engineering, National Chi Nan University, Puli, Taiwan; Himax Technology, Inc Hsinhua, Tainan, Taiwan. sheu@ncnu.edu.tw
fYear :
2005
fDate :
19-21 Dec. 2005
Firstpage :
627
Lastpage :
630
Abstract :
In this paper, a novel capacitive sensing scheme for fingerprint acquisition is presented. Based on capacitive fingerprint sensing, a novel capacitive sensor structure and readout circuit are proposed to grab the induced capacitance by the finger directly touched to the sensor plate. A test array of 32x32 capacitive fingerprint sensors is implemented in a standard CMOS 0.35-μm technology. Including the sensor array and peripheral digital control circuit, the chip area is 2550x1890μm2.
Keywords :
CMOS technology; Capacitive sensors; Capacitors; Circuits; Fingerprint recognition; Fingers; Parasitic capacitance; Sensor arrays; Switches; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electron Devices and Solid-State Circuits, 2005 IEEE Conference on
Print_ISBN :
0-7803-9339-2
Type :
conf
DOI :
10.1109/EDSSC.2005.1635352
Filename :
1635352
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1989189
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