Title :
A fingerprint opto-detector using lateral bipolar phototransistors in a standard CMOS process
Author :
Sandage, Robert W. ; Connelly, J.Alvin
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
An integrated photodetector array has been fabricated using lateral bipolar phototransistors. These transistors are ten times as responsive (λ=660 nm) as identically sized vertical bipolar phototransistors and arrays of this transistor consume less power than charge-coupled device arrays of the same size. The image processing for this array is accomplished through the use of a current mode comparator
Keywords :
CMOS digital integrated circuits; array signal processing; current comparators; fingerprint identification; image processing; image sensors; integrated optoelectronics; photodetectors; phototransistors; 660 nm; current mode comparator; fingerprint opto-detector; image processing; integrated photodetector array; lateral bipolar phototransistors; standard CMOS process; CMOS process; CMOS technology; Charge transfer; Fingerprint recognition; Optical arrays; Optical imaging; Photodetectors; Photodiodes; Phototransistors; Power engineering computing;
Conference_Titel :
Electron Devices Meeting, 1995. IEDM '95., International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-2700-4
DOI :
10.1109/IEDM.1995.497207
