Invention Grant
- Patent Title: Capacitive fingerprint sensor and the panel thereof
- Patent Title (中): 电容式指纹传感器及其面板
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Application No.: US12034258Application Date: 2008-02-20
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Publication No.: US07683639B2Publication Date: 2010-03-23
- Inventor: Kai Lan Chuang , Ying Lieh Chen
- Applicant: Kai Lan Chuang , Ying Lieh Chen
- Applicant Address: TW Tainan County
- Assignee: Himax Technologies Limited
- Current Assignee: Himax Technologies Limited
- Current Assignee Address: TW Tainan County
- Agency: WPAT, P.C.
- Agent Anthony King; Kay Yang
- Main IPC: G01R27/28
- IPC: G01R27/28 ; G06F3/041
Abstract:
A capacitive fingerprint sensor comprises a fingerprint capacitor, a reference capacitor, a first transistor and a second transistor. The fingerprint capacitor CF has a capacitance that is either a valley capacitance CFV or a ridge capacitance CFR. The reference capacitor CS has a capacitance CS, and CFV
Public/Granted literature
- US20090206848A1 CAPACITIVE FINGERPRINT SENSOR AND THE PANEL THEREOF Public/Granted day:2009-08-20
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