Title :
A 128×128 imaging array using lateral bipolar phototransistors in a standard CMOS process [fingerprint detection]
Author :
Sandage, Robert W. ; Connelly, J.Alvin
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
31 May-3 Jun 1998
Abstract :
A 128×128 element photodetector array has been fabricated using lateral bipolar phototransistors in a standard 1.2 μm digital CMOS process. One-bit image processing for the array is accomplished through the use of a current mode comparator. Images focused on to the photodetector array have been successfully captured and are presented in this paper
Keywords :
BiCMOS integrated circuits; comparators (circuits); fingerprint identification; image sensors; photodetectors; phototransistors; 1.2 micron; current mode comparator; fingerprint detection; imaging array; lateral bipolar phototransistors; one-bit image processing; photodetector array; standard CMOS process; CMOS process; CMOS technology; Charge transfer; Fingerprint recognition; Image processing; Optical arrays; Optical imaging; Photodetectors; Photodiodes; Phototransistors;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.705442
