Invention Grant
- Patent Title: Electronic device including device ground coupled finger coupling electrode and array shielding electrode and related methods
- Patent Title (中): 电子器件包括器件地耦合指状电极和阵列屏蔽电极及相关方法
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Application No.: US13886520Application Date: 2013-05-03
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Publication No.: US09581628B2Publication Date: 2017-02-28
- Inventor: Dale R. Setlak , Giovanni Gozzini
- 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: G01R27/26
- IPC: G01R27/26 ; G01R3/00 ; G06K9/00
Abstract:
An electronic device may include a housing and circuitry carried by the housing and having a device ground associated therewith. The electronic device may also include an array of biometric finger sensing pixel electrodes and an array shielding electrode outside the array of biometric finger sensing pixels. A finger coupling electrode may be outside the array shielding electrode and coupled to the device ground. The electronic device may also include drive circuitry capable of generating a drive signal for the array of biometric finger sensing pixel electrodes and a compensating drive signal for the array shielding electrode.
Public/Granted literature
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