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Method of making a piezoelectric transducer having protuberances for transmitting acoustic energy

  • US 6,321,428 B1
  • Filed: 03/28/2000
  • Issued: 11/27/2001
  • Est. Priority Date: 03/28/2000
  • Status: Expired due to Fees
First Claim
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1. A method of forming protuberances in piezoelectric material for an acoustic device comprising:

  • providing a substrate having a plurality of perforations of a given dimension formed therein;

    forming a laminate comprising a film of polymer piezoelectric material sandwiched between a first electrode layer on a top surface and a second electrode layer on a bottom surface;

    securing the laminate to the substrate to form a composite assembly; and

    treating the composite assembly to form protuberances in the film at the locations of the perforations.

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