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Capacitive touch screen display system including circuitry to address display perturbations induced by panel sensing

  • US 9,524,697 B2
  • Filed: 09/02/2014
  • Issued: 12/20/2016
  • Est. Priority Date: 09/02/2014
  • Status: Active Grant
First Claim
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1. A touch panel control and sense circuit, comprising:

  • an input configured to receive a signal including information indicative of a display on condition of a video display panel;

    a plurality of sense drive circuits configured to generate sense drive signals for application to sense lines of a touch panel; and

    a controller configured to process the received signal and identify timing of the display on condition and further generate control signals that control actuation of the sense drive circuits, wherein said control signals applies a phase jitter to a leading edge of the sense drive signals such that said leading edges fall within a sense drive signal window that is synchronized to the display on condition.

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