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Touch sensor with linearized response

  • US 7,439,963 B2
  • Filed: 10/29/2007
  • Issued: 10/21/2008
  • Est. Priority Date: 12/30/2003
  • Status: Expired due to Fees
First Claim
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1. A touch sensor comprising:

  • a resistive film covering a touch sensitive area;

    at least two polygonal parallel rows surrounding the touch sensitive area including an inner row and an outermost row, the inner row comprising an electrically insulative corner segment in the resistive film at each vertex of the inner row, the outermost row comprising an electrically conductive corner segment disposed on the resistive film at each vertex of the outermost row, each corner segment at a polygon vertex extending along a portion of each of the two edges intersecting at the polygon vertex; and

    electrically conductive interconnect lines connected to the conductive corner segments for communicating signals to and from the resistive film for detecting an input touch applied to the touch sensitive area.

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