Touch display driving apparatus and operation method thereof

  • US 11,061,500 B2
  • Filed: 09/09/2019
  • Issued: 07/13/2021
  • Est. Priority Date: 05/06/2019
  • Status: Active Grant
First Claim
Patent Images

1. A touch display driving apparatus, comprising:

  • a display driver circuit, configured to drive a plurality of gate lines of a touch display panel during a display frame period corresponding to a vertical synchronization signal to display an image frame, wherein the display frame period comprises a plurality of display driving periods, a plurality of first touch driving periods included in a first touch frame period and a plurality of second touch driving periods included in a second touch frame period, and the display driver circuit drives the touch display panel during the display driving periods; and

    a touch driver circuit, configured to detect a plurality of common electrode rows of the touch display panel during the first touch driving periods and the second touch driving periods to detect a touch event,wherein each of the common electrode rows is one of rows of common electrodes, wherein the common electrode rows are parallel to the gate lines, each of the common electrode rows serves as a current common electrode row, the current common electrode row covers a plurality of corresponding gate lines of the gate lines, the touch driver circuit is configured to perform a touch sensing operation of a touch frame during each of the first touch frame period and the second touch frame period,wherein in the display frame period, the touch driver circuit is configured to detect the current common electrode row during one of the plurality of first touch driving periods and during one of the plurality of second touch driving periods, andthe one of the plurality of the first touch driving periods is not temporally adjacent to the display driving period during which the corresponding gate lines are driven, and the one of the plurality of second touch driving periods is not temporally adjacent to the display driving period during which the corresponding gate lines are driven.

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