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Display to touch crosstalk compensation

  • US 9,310,916 B2
  • Filed: 01/14/2011
  • Issued: 04/12/2016
  • Est. Priority Date: 01/14/2011
  • Status: Active Grant
First Claim
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1. A method of compensating for crosstalk generated in a touch sensitive display, the method comprising:

  • applying first gate voltages to gates of display pixels, the first gate voltages having voltage levels operative for display data during a display mode of operation;

    during a touch sensing mode of operation, performing multiple touch scans to generate multiple touch images,the multiple touch images obtained by applying multiple different second gate voltage levels to the gates of the display pixels, the multiple different second gate voltage levels being different from the first gate voltage levels and each operative to inhibit a display function of the display pixels;

    comparing the touch images to determine a crosstalk component introduced into the display; and

    subtracting the determined crosstalk component from at least one of the touch images to provide a crosstalk compensated touch image.

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