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Acoustic touchscreen having waveguided reflector arrays

  • US 6,636,201 B1
  • Filed: 05/26/2000
  • Issued: 10/21/2003
  • Est. Priority Date: 05/26/2000
  • Status: Expired due to Term
First Claim
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1. A touchscreen comprising(a) a substrate capable of propagating acoustic waves, having (i) a touch-sensitive area and (ii) a border region along the touch-sensitive area;

  • (b) an array of partially acoustically reflective elements having a transverse dimension, the array located in a portion of the border region and positioned to transmit or receive an acoustic signal into or out of the touchsensitive area;

    (c) an acoustic waveguide located in the portion of the border region, the acoustic waveguide having a transverse dimension less than the array transverse dimension.

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