Invention Grant
- Patent Title: Fingerprint identification module, drive control circuit, display substrate and display device
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Application No.: US15037411Application Date: 2016-01-28
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Publication No.: US09773149B2Publication Date: 2017-09-26
- Inventor: Wei Liu , Xue Dong , Hailin Xue , Haisheng Wang , Xiaochuan Chen , Xiaoliang Ding , Shengji Yang , Yingming Liu , Weijie Zhao , Hongjuan Liu , Changfeng Li , Lei Wang , Pengpeng Wang
- Applicant: Boe Technology Group Co., Ltd. , Beijing Boe Optoelectronics Technology Co., Ltd.
- Applicant Address: CN Beijing CN Beijing
- Assignee: BOE TECHNOLOGY GROUP CO., LTD.,BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee: BOE TECHNOLOGY GROUP CO., LTD.,BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Current Assignee Address: CN Beijing CN Beijing
- Agency: Calfee, Halter & Griswold LLP
- Priority: CN201510463479 20150731
- International Application: PCT/CN2016/072509 WO 20160128
- International Announcement: WO2017/020565 WO 20170209
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
The present disclosure relates to a fingerprint identification module, including: a plurality of sensing units, wherein each sensing unit receives modulation signal when turned on, the modulation signal covers at least one first time interval and at least one second time interval, and the voltages during the first and second time intervals are respectively first and second voltages; a collecting unit for collecting output signals of the sensing units in the same column in all the first time intervals as a first signal and those in all the second time intervals as a second signal; and a calculating unit for determining the difference between the first and second signals to obtain a third signal and obtaining the fingerprint information sensed on the basis of the third signal. Through the above solution, it is possible to eliminate the influence of the leakage current in the sensing unit, thereby accurately identifying fingerprints.
Public/Granted literature
- US20170161538A1 FINGERPRINT IDENTIFICATION MODULE, DRIVE CONTROL CIRCUIT, DISPLAY SUBSTRATE AND DISPLAY DEVICE Public/Granted day:2017-06-08
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