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Signal control circuit, power control circuit, drive circuit, timing controller, touch system, and touch display device and driving method thereof

  • US 10,324,324 B2
  • Filed: 08/04/2017
  • Issued: 06/18/2019
  • Est. Priority Date: 10/13/2015
  • Status: Active Grant
First Claim
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1. A touch sensitive display device comprising:

  • a display panel that comprises a plurality of common electrodes, the common electrodes used for touch electrodes and display electrodes;

    a driving circuit to supply a common voltage to at least one common electrode of the common electrodes;

    a first ground wring disposed in the display panel;

    a second ground wiring to which a non-modulated ground voltage is applied; and

    a circuit to provide a modulated ground voltage to the first ground wiring,wherein the driving circuit is electrically connected to the at least one common electrode through a signal line, andthe driving circuit senses the at least one common electrode of the common electrodes through the signal line to detect a touch.

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