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Dynamic adjustment of touch resolutions on an AMOLED display

  • US 9,952,698 B2
  • Filed: 03/03/2014
  • Issued: 04/24/2018
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A method of dynamically adjusting a touch resolution of a video display having a plurality of pixel circuits each including a light emitting device driven by a driving transistor according to a programming current or voltage representing a desired brightness produced by the light emitting device, comprising:

  • defining, by a controller, a first touch resolution of the video display to create a first plurality of capacitive touch zones relative to a transparent substrate of the video display as images are being displayed on the video display;

    detecting a first touch on the transparent substrate in a first touch zone of the first plurality of capacitive touch zones by measuring a voltage across an anode and a cathode of each of a first set of light emitting devices of the video display in the first touch zone;

    dynamically changing, by the controller, the first touch resolution to a second touch resolution different from the first touch resolution to create a second plurality of capacitive touch zones relative to the video display as further images are being displayed on the video display; and

    detecting a second touch in a second touch zone of the second plurality of capacitive touch zones by measuring a voltage across an anode and a cathode of each of a second set of light emitting devices of the video display in the second touch zone, wherein each light emitting of the first set of light emitting devices and each light emitting device of the second set of light emitting devices is self-emitting.

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