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Touch panel

  • US 6,567,077 B2
  • Filed: 02/16/2001
  • Issued: 05/20/2003
  • Est. Priority Date: 08/18/1998
  • Status: Expired due to Term
First Claim
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1. A touch panel comprising:

  • a substrate capable of propagating an acoustic wave, the substrate having a first surface, a second surface and a connecting surface, the connecting surface interconnecting the first surface and the second surface and being curved; and

    a transducer mounted on the second surface and positioned for transmitting an acoustic wave from the second surface to the first surface via the connecting surface, wherein the transducer is positioned such that the acoustic wave travels in a first direction on the second surface and a second direction on the first surface, the first direction being approximately perpendicular to the second direction.

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