Invention Application
- Patent Title: Fingerprint Detection Device and Fingerprint Detection Method
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Application No.: US16622557Application Date: 2019-05-30
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Publication No.: US20200175245A1Publication Date: 2020-06-04
- Inventor: Xiaoliang DING , Xue DONG , Haisheng WANG , Yingming LIU , Wei LIU , Jiabin WANG , Yangbing LI , Pengpeng WANG , Ping ZHANG , Likai DENG , Bo CHEN
- Applicant: BOE TECHNOLOGY GROUP CO., LTD.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@2f1f2371
- International Application: PCT/CN2019/089336 WO 20190530
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04N5/378

Abstract:
The present disclosure provides a fingerprint detection device and method. The fingerprint detection device includes a detection substrate and a signal converter. The detection substrate includes pixels arranged in rows and columns. Each pixel includes a sensing circuit configured to receive an optical signal and output a sensing electrical signal according to the received optical signal. The signal converter includes A/D converters each coupled to one column of sensing circuits. The fingerprint detection device further includes a control circuit coupled to the sensing circuits and the A/D converters and configured to obtain common mode component of sensing electrical signals output by sensing circuits of at least part of the pixels and provide information about the common mode component to the A/D converters. The A/D converter is configured to perform analog-to-digital conversion on difference between the sensing electrical signal from corresponding sensing circuit and the common mode signal.
Public/Granted literature
- US11308727B2 Fingerprint detection device and fingerprint detection method Public/Granted day:2022-04-19
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