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Touch sensitive devices with composite electrodes

  • US 8,405,633 B2
  • Filed: 08/22/2012
  • Issued: 03/26/2013
  • Est. Priority Date: 08/01/2008
  • Status: Active Grant
First Claim
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1. A multi-layer touch panel, comprising:

  • a first layer comprising a transparent touch surface;

    an upper electrode array and a lower electrode array defining an electrode matrix having nodes where the upper and lower electrodes cross over, and wherein the upper electrode array is disposed between the first layer and the lower electrode layer, wherein electrodes of the upper and lower electrode arrays comprise a plurality of composite electrodes comprised of a plurality of metal or metal alloy micro-wire conductors having a cross-sectional dimension of less than 10 microns;

    a dielectric disposed between the upper electrode array and the lower electrode array;

    wherein electrodes of the upper electrode layer are configured to be more pervious to an electric field than electrodes in the lower electrode layer.

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