Invention Grant
- Patent Title: Charge transfer circuit for capacitive sensing and apparatus for detecting fingerprint having thereof
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Application No.: US15524623Application Date: 2015-11-02
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Publication No.: US10068122B2Publication Date: 2018-09-04
- Inventor: Hyeop Goo Yeo , Seung Min Jung
- Applicant: SENVIS CO. LTD.
- Applicant Address: KR
- Assignee: SENVIS CO. LTD.
- Current Assignee: SENVIS CO. LTD.
- Current Assignee Address: KR
- Agency: Renaissance IP Law Group LLP
- Priority: KR10-2014-0155400 20141110
- International Application: PCT/KR2015/011623 WO 20151102
- International Announcement: WO2016/076562 WO 20160519
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G01D5/24 ; G01R27/26

Abstract:
A charge transfer circuit for capacitive sensing according to an embodiment of the present disclosure includes a variable capacitor defined through a sensor plate connected to one end of a drive line and one end of an X-drive line, an X-drive part disposed between a voltage input terminal and another end of the X-drive line opposing the variable capacitor, a switched capacitor integrator disposed between a voltage output terminal and another end of the drive line of which the one end is connected to the variable capacitor, and a shielding plate connected to a first input terminal of the switched capacitor integrator, wherein the first input terminal is connected to the other end of the drive line.
Public/Granted literature
- US20170323134A1 CHARGE TRANSFER CIRCUIT FOR CAPACITIVE SENSING AND APPARATUS FOR DETECTING FINGERPRINT HAVING THEREOF Public/Granted day:2017-11-09
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