Premium
56.3: Flexible and Transparent Optical Fingerprint Capture System Based on Multilayer‐Coated Gratings of Polydimethylsiloxane
Author(s) -
Fu Yifei,
Wang Haoyu,
Wang Chengliang,
Feng Liyan,
Huang Xinran,
Wu Bisheng,
Jiang Shuai,
Zheng Jun,
Ye Zhicheng
Publication year - 2019
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.13588
Subject(s) - polydimethylsiloxane , materials science , fingerprint (computing) , optoelectronics , substrate (aquarium) , coupling (piping) , reflection (computer programming) , wearable computer , grating , computer science , optics , nanotechnology , artificial intelligence , embedded system , composite material , physics , oceanography , geology , programming language
With the rapidly growing demand of wearable displays, flexible and stretchable fingerprint recognition modules are needed, as one of the crucial components in a display device. In this work, a grating coupler typed optical fingerprint capture(OFC) based on Polydimethylsiloxane(PDMS) substrate is presented in both simulation and experiment. The PDMS not only affords superior elasticity, but also facilitates the breaking of total internal reflection (TIR) of coupling lights to enhance the capture of fingerprint. Multilayer‐coated gratings are proposed to achieve high optical coupling efficiency of incident light. The proposed sensitive and flexible OFC system is of great promising in the practical applications.