Evaluation of a single-pixel one-transistor active pixel sensor for fingerprint imaging

Man Xu; Hai Ou; Jun Chen; Kai Wang

doi:10.1117/12.2193336

10 August 2015 Evaluation of a single-pixel one-transistor active pixel sensor for fingerprint imaging

Man Xu, Hai Ou, Jun Chen, Kai Wang

Proceedings Volume 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 96200A (2015) https://doi.org/10.1117/12.2193336
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

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.

Citation Download Citation

Man Xu, Hai Ou, Jun Chen, and Kai Wang "Evaluation of a single-pixel one-transistor active pixel sensor for fingerprint imaging", Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 96200A (10 August 2015); https://doi.org/10.1117/12.2193336

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