42‐2: Establishment and Simulation Optimization of Optical Fingerprint Recognition Structure in LCD Screen. Issue 1 (25th September 2020)

• Record Type: Journal Article
• Authors: Huang, Jianmou; Wang, Hailiang; Lin, Yan; Zhou, Wenqi; Long, Yaqiong; Yang, Yan; Wu, Ling; Zhou, Ting; Shen, Boping; Li, Junyi
• Is Part Of: Digest of technical papers. Volume 51:Issue 1(2020)
• Page Start: 607
• Page End: 610
• Publication Date: 2020-09-25
• Subjects: Liquid crystal Technology -- Fingerprint identification technology -- Interactive Displays; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.13941
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : This paper reports a new type of liquid crystal screen which has an in‐screen optical fingerprint recognition collimation structure. The collimator structure in the TFT&CF glass in the screen has different opening size and height. Through simulation, the SNR( Signal to Noise Ratio )&CR(contrast ratio) evaluation criteria were obtained to judge the fingerprint identification accuracy of the collimating structure .Compared with the unoptimized structure, the optimized collimation layer improves the accuracy of fingerprint identification.