Multipoint touchscreen

  • US 8,982,087 B2
  • Filed: 06/18/2014
  • Issued: 03/17/2015
  • Est. Priority Date: 05/06/2004
  • Status: Active Grant
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First Claim
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1. A device comprising:

  • a touch sensor panel configured to detect multiple touches or near touches that occur at a same time and at distinct locations in a plane of the touch sensor panel, the touch sensor panel comprising;

    a first layer having a plurality of transparent first conductive lines that are electrically isolated from one another; and

    a second layer spatially separated from the first layer and having a plurality of transparent second conductive lines that are electrically isolated from one another, the second conductive lines being positioned transverse to the first conductive lines, the intersection of transverse lines being positioned at different locations in a plane of the touch sensor panel;

    capacitive monitoring circuitry configured to detect a decrease in charge coupling between the first conductive lines and the second conductive lines; and

    a display device positioned adjacent the touch sensor panel.

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