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Finger biometric sensor including laterally adjacent piezoelectric transducer layer and associated methods

  • US 8,604,905 B2
  • Filed: 10/19/2010
  • Issued: 12/10/2013
  • Est. Priority Date: 08/07/2009
  • Status: Expired due to Fees
First Claim
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1. A finger biometric sensor comprising:

  • a finger biometric sensing layer having opposing first and second major surfaces and for generating signals related to at least one biometric characteristic of a user'"'"'s finger when positioned adjacent the first major surface;

    a piezoelectric transducer layer adjacent the second major surface of said finger biometric sensing layer;

    a plurality of electrically conductive layers coupled to said piezoelectric transducer layer to define transducer electrodes; and

    a finger drive electrode adjacent said finger biometric sensing layer and said piezoelectric transducer layer, and configured to couple a radio frequency (RF) signal with the user'"'"'s finger.

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