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Generating perceptible touch stimulus

  • US 9,110,507 B2
  • Filed: 08/13/2010
  • Issued: 08/18/2015
  • Est. Priority Date: 08/13/2010
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a first surface electrode and an arrangement of second insulated surface electrodes;

    a display configured to display an image; and

    a controller configured to apply a potential difference between the first surface electrode and the arrangement of second insulated surface electrodes, and configured to control at least a variation in the applied potential difference in dependence upon the displayed image, wherein the applied potential difference is configured to provide a touch stimulus by modulating a frictional force applied to a digit of a user when the digit, contacting a face of the apparatus, is traced over the face.

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