A 368 x 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-Chivan Bai

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

This study proposes a 368 x 184 optical underdisplay fingerprint sensor designed and prototyped using 0.11-mu 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 x 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 x 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)
發行者IEEE
頁數4
ISBN(列印)9781728160313
出版狀態Published - 三月 2020
事件IEEE Custom Integrated Circuits Conference (CICC) - Boston, Morocco
持續時間: 22 三月 202025 三月 2020

出版系列

名字IEEE Custom Integrated Circuits Conference
發行者IEEE

Conference

ConferenceIEEE Custom Integrated Circuits Conference (CICC)
國家Morocco
城市Boston
期間22/03/2025/03/20

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