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36‐1: Optical Fingerprint Recognition Technology Based on Liquid‐Crystal Displays
Author(s) -
Zhang Guiyang,
Yang Huanli,
Shuai Chuan,
Zha Guowei,
Shi Tengteng,
Bu Huanhuan,
Liu Guanghui
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14721
Subject(s) - fingerprint (computing) , fingerprint recognition , ridge , signal (programming language) , liquid crystal display , contrast (vision) , computer science , artificial intelligence , pattern recognition (psychology) , computer vision , materials science , optoelectronics , geography , cartography , programming language
This paper introduces the current optical schemes of LCD optical fingerprint recognition, analyzes the structure and signal characteristics in detail. The simulation and measurement results show that fingerprint recognition effect is not only dependent on the valley/ridge contrast ratio, but also dependent on the valley/ridge signal difference. Finally, the development direction of LCD optical fingerprint recognition in the future is illustrated by combining the advantages of different optical structures.