×

ELECTRONIC DEVICE INCLUDING DEVICE GROUND COUPLED FINGER COUPLING ELECTRODE AND ARRAY SHIELDING ELECTRODE AND RELATED METHODS

  • US 20130314105A1
  • Filed: 05/03/2013
  • Published: 11/28/2013
  • Est. Priority Date: 05/04/2012
  • Status: Active Grant
First Claim
Patent Images

1. An electronic device comprising:

  • a housing;

    circuitry carried by said housing and having a device ground associated therewith;

    an array of biometric finger sensing pixel electrodes;

    an array shielding electrode outside said array of biometric finger sensing pixels;

    a finger coupling electrode outside said array shielding electrode and coupled to the device ground; and

    drive circuitry capable of generating a drive signal for said array of biometric finger sensing pixel electrodes and a compensating drive signal for said array shielding electrode.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×