Capacitive touch screen with noise suppression

  • US 9,823,784 B2
  • Filed: 04/10/2009
  • Issued: 11/21/2017
  • Est. Priority Date: 04/10/2008
  • Status: Active Grant
First Claim
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1. A sensor comprising:

  • a substrate; and

    a sensing region configured to sense a position of an object within the sensing region, the sensing region comprising;

    a plurality of drive electrodes disposed on a first side of the substrate in a first layer; and

    a plurality of sense electrodes disposed on a second side of the substrate in a second layer so that the sense electrodes intersect the drive electrodes at a plurality of intersections offset by a thickness of the substrate, wherein the plurality of drive electrodes are substantially area filling within the sensing region relative to the plurality of sense electrodes;

    wherein a gap between adjacent sense electrodes has a width that is at least three-fifths of the pitch of the sense electrodes;

    wherein the sensing region further comprises a plurality of isolated conductive elements disposed on the second side of the substrate between the sense electrodes so that, together, the plurality of sense electrodes and the plurality of isolated conductive elements are substantially area filling within the sensing region relative to the plurality of sense electrodes.

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