A 368 × 184 Optical Under-Display Fingerprint Sensor with Global Shutter and High-Dynamic-Range Operation

Ping Hung Yin, Chih Wen Lu, Jia Shyang Wang, Keng Li Chang, Fu Kuo Lin, Chia Jung Chang, Gen Chiuan Bai

研究成果: Conference contribution同行評審

摘要

This study proposes a 368 × 184 optical under-display fingerprint sensor designed and prototyped using 0.11-μ m CIS technology. The prototype sensor with global shutter operation and an ADC-embedded in an 8-pixel configuration features low noise, low-power consumption, fast response time, and a smaller signal processing circuit area. Two sets of memory (184 × 92 bytes) are also embedded in the pixel array to save external memory cost. A dynamic range of 126 dB is achieved with 8-segment auto exposure and dark level adjustment with programmable gain control. The prototype fingerprint sensor was successfully embedded in a mobile phone for functional verification, and the power consumption was only 25 mW with a 3.3 V supply voltage. The sensor has a chip size of 9.74 mm × 4.6 mm, a resolution of 1154 dpi, and a sensing area of 73%.

原文English
主出版物標題2020 IEEE Custom Integrated Circuits Conference, CICC 2020
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781728160313
DOIs
出版狀態Published - 三月 2020
事件2020 IEEE Custom Integrated Circuits Conference, CICC 2020 - Boston, United States
持續時間: 22 三月 202025 三月 2020

出版系列

名字Proceedings of the Custom Integrated Circuits Conference
2020-March
ISSN(列印)0886-5930

Conference

Conference2020 IEEE Custom Integrated Circuits Conference, CICC 2020
國家United States
城市Boston
期間22/03/2025/03/20

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