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Proceedings Paper

Evaluation of a single-pixel one-transistor active pixel sensor for fingerprint imaging
Author(s): Man Xu; Hai Ou; Jun Chen; Kai Wang
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Paper Abstract

Since it first appeared in iPhone 5S in 2013, fingerprint identification (ID) has rapidly gained popularity among consumers. Current fingerprint-enabled smartphones unanimously consists of a discrete sensor to perform fingerprint ID. This architecture not only incurs higher material and manufacturing cost, but also provides only static identification and limited authentication. Hence as the demand for a thinner, lighter, and more secure handset grows, we propose a novel pixel architecture that is a photosensitive device embedded in a display pixel and detects the reflected light from the finger touch for high resolution, high fidelity and dynamic biometrics. To this purpose, an amorphous silicon (a-Si:H) dual-gate photo TFT working in both fingerprint-imaging mode and display-driving mode will be developed.

Paper Details

Date Published: 10 August 2015
PDF: 7 pages
Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 96200A (10 August 2015); doi: 10.1117/12.2193336
Show Author Affiliations
Man Xu, Sun Yat-sen Univ.-Carnegie Mellon Univ. Shunde International Joint Research Institute (China)
Hai Ou, Sun Yat-sen Univ. (China)
Jun Chen, Sun Yat-sen Univ. (China)
Kai Wang, Sun Yat-sen Univ.-Carnegie Mellon Univ. Shunde International Joint Research Institute (China)
Sun Yat-sen Univ. (China)


Published in SPIE Proceedings Vol. 9620:
2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Xuping Zhang; David Erickson; Xudong Fan; Zhongping Chen, Editor(s)

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