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Acoustic wave touch detecting apparatus

  • US 6,948,371 B2
  • Filed: 11/12/2003
  • Issued: 09/27/2005
  • Est. Priority Date: 11/13/2002
  • Status: Expired due to Term
First Claim
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1. An acoustic wave contact detecting apparatus comprising:

  • a substrate having a surface along which acoustic waves propagate;

    an acoustic wave generating means;

    a reflection array for causing the generated acoustic waves to propagate along the surface of the substrate;

    a detector for detecting changes in the acoustic wave caused by an object contacting the surface of the substrate; and

    a controller for determining the geometric coordinates of the object;

    wherein;

    at least one of the acoustic wave generating means and the detector are connected to the controller by flexible planar wiring; and

    the flexible planar wiring is of a wiring pattern in which a grounding wire is provided on at least one side of a signal wire.

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