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Multi-point touch-sensitive device

  • US 8,106,891 B2
  • Filed: 11/24/2008
  • Issued: 01/31/2012
  • Est. Priority Date: 08/28/2008
  • Status: Active Grant
First Claim
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1. A touch-sensitive device, comprising:

  • a first conductive layer having at least a first edge and a second edge, wherein the second edge is substantially parallel to the first edge and there is a voltage drop across the first conductive layer between the first edge and the second edge when a power supply is coupled to the first edge and the second edge; and

    a second conductive layer separated from the first conductive layer by a spacer layer, wherein the second conductive layer includes multiple electrically isolated conductive regions;

    wherein, when a plurality of the conductive regions are in contact with the first conductive layer simultaneously, each of the plurality of the conductive regions generates an output signal and the magnitude of the output signal depends at least in part upon the conductive region'"'"'s position relative to the first and second edges.

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