Research on fingerprint recognition materials under ultra-thin screen

Bingqiang Zhang; Sanzhao Wang; Xixiang Ma; Long Chen; Yuechong Feng; Pan Shi

doi:10.1117/12.3015020

30 April 2024 Research on fingerprint recognition materials under ultra-thin screen

Bingqiang Zhang, Sanzhao Wang, Xixiang Ma, Long Chen, Yuechong Feng, Pan Shi

Proceedings Volume 13155, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems; 131550D (2024) https://doi.org/10.1117/12.3015020
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

The biggest problem faced in the application of optical under-screen fingerprint identification technology is that the finger reflects back more light information, and the information of the fingerprint is interfered by a lot of stray signals, which i s solved by the appearance of ultra-thin under-screen fingerprint identification materials. Using high transmittance core glass and light shielding cladding glass, the preparation process of fiber optic panel is used to obtain the under-screen fingerprint identification material composed of micron-level 2D optical waveguide collimated array. The test results show that the ultra-thin under-screen fingerprint identification material has a good collimation and selection effect on the reflected light signals from the peaks and valleys of the finger, the light shielding glass absorbs the reflected light signals from the large angle, and the high transmittance core glass conducts the collimated and small-angle reflected light signals, so that a clear fingerprint image can be obtained. The development of ultra-thin under-screen fingerprint identification material provides feasible for ultra-thin 5G cell phones.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Bingqiang Zhang, Sanzhao Wang, Xixiang Ma, Long Chen, Yuechong Feng, and Pan Shi "Research on fingerprint recognition materials under ultra-thin screen", Proc. SPIE 13155, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems, 131550D (30 April 2024); https://doi.org/10.1117/12.3015020

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KEYWORDS

Fingerprint recognition

Displays

Image sensors

Reflection

Information security

Glasses

Stray light

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