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TOUCH SCREEN SYSTEM WITH ACOUSTIC AND CAPACITIVE SENSING

  • US 20110199328A1
  • Filed: 12/29/2010
  • Published: 08/18/2011
  • Est. Priority Date: 02/18/2010
  • Status: Abandoned Application
First Claim
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1. A touch screen system for an electronic device having a power source that provides a first voltage, comprising:

  • a transparent substrate for receiving a contact of an object;

    one or more acoustic transducers associated with the transparent substrate, wherein the acoustic transducers receive an acoustic wave generated by the contact and convert the acoustic wave to an electronic signal; and

    a transparent conductive layer located below the transparent substrate, wherein the transparent conductive layer receives the first voltage from the power source, and wherein the contact of the object causes a capacitive change between the transparent conductive layer and the object.

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