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Piezoelectric composite apparatus and related methods

  • US 7,696,676 B2
  • Filed: 12/18/2006
  • Issued: 04/13/2010
  • Est. Priority Date: 12/18/2006
  • Status: Active Grant
First Claim
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1. A piezoelectric planar composite apparatus comprising:

  • a piezoelectric material layer;

    a plurality of electrodes positioned in electrical contact with the piezoelectric material layer;

    a plurality of sets of electrode interconnect conductors each positioned in electrical contact with a different subset of the plurality of electrodes and positioned to form a plurality of complementary electrode patterns, each of the plurality of complementary electrode patterns positioned to form an electric field having an electric field axis oriented along a different physical axis from that of an electric field formed by at least one other of the complementary electrode patterns; and

    a first electrode interconnect conductor carrying layer and a second electrode interconnect conductor carrying layer each carrying a different one of the plurality of sets of electrode interconnect conductors, the first electrode interconnect conductor carrying layer positioned between the piezoelectric material layer and the second electrode interconnect conductor carrying layer.

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