Invention Grant
US09367173B2 Finger sensor having pixel sensing circuitry for coupling electrodes and pixel sensing traces and related methods
有权
具有用于耦合电极和像素感测迹线的像素感测电路的手指传感器和相关方法
- Patent Title: Finger sensor having pixel sensing circuitry for coupling electrodes and pixel sensing traces and related methods
- Patent Title (中): 具有用于耦合电极和像素感测迹线的像素感测电路的手指传感器和相关方法
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Application No.: US13743706Application Date: 2013-01-17
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Publication No.: US09367173B2Publication Date: 2016-06-14
- Inventor: Dale R. Setlak
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Main IPC: G06F3/042
- IPC: G06F3/042 ; G06K9/00
Abstract:
A finger sensor may include pixels, pixel sensing traces each associated with a respective pixel, and electrodes overlying the pixel sensing traces. The finger sensor may also include pixel sensing circuitry coupled to the pixel sensing traces and the electrodes. The pixel sensing circuitry may be capable of operating in a measurement mode by operating the pixels so that at least some of the pixels are active, and at least some other of the pixels are inactive and coupling pixel sensing traces associated with the inactive pixels to a voltage reference. The pixel sensing circuitry may also be capable of operating in the measurement mode by coupling electrodes associated with the active pixels to the voltage reference and coupling electrodes associated with the inactive pixels to a drive signal.
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