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COMPOUND MEMBRANE AND ACOUSTIC DEVICE USING SAME

  • US 20110272208A1
  • Filed: 12/26/2010
  • Published: 11/10/2011
  • Est. Priority Date: 05/04/2010
  • Status: Active Grant
First Claim
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1. A compound membrane comprising:

  • a central layer;

    a first glue layer attached to one side of the central layer;

    a second glue layer attached to another side of the central layer;

    an upper layer provided on the first glue layer; and

    a lower layer provided beneath the second glue layer.

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