DocumentCode
2962735
Title
A new Polysilicon TFT capacitive fingerprint sensor with advanced mismatch compensation
Author
Rechatin, Cedric ; Audebert, Patrick ; Abouchi, Nacer ; Galvan, Jean-Marc
Author_Institution
LETI, Grenoble
fYear
2006
fDate
10-13 Dec. 2006
Firstpage
1240
Lastpage
1243
Abstract
Low temperature poly-silicon thin film transistors (LTPS TFT) technology is very suitable for low cost fingerprint sensor. In this paper, a new LTPS TFT capacitive sensor is presented. The proposed sensing scheme is based on charge sensitive amplifiers using correlated double sampling techniques (CDS) for offset voltage cancellation. Simulation results exhibit that the random offset voltage is successfully compensated.
Keywords
capacitive sensors; cryogenic electronics; elemental semiconductors; fingerprint identification; silicon; thin film sensors; thin film transistors; LTPS TFT capacitive fingerprint sensor; Si; charge sensitive amplifiers; correlated double sampling techniques; low-temperature poly-silicon thin film transistors; offset voltage cancellation; random offset voltage; CMOS technology; Capacitive sensors; Circuits; Costs; Fingerprint recognition; Glass; Intelligent sensors; Temperature sensors; Thin film transistors; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electronics, Circuits and Systems, 2006. ICECS '06. 13th IEEE International Conference on
Conference_Location
Nice
Print_ISBN
1-4244-0395-2
Electronic_ISBN
1-4244-0395-2
Type
conf
DOI
10.1109/ICECS.2006.379686
Filename
4263598
Link To Document