Touch display apparatus's drive circuit

Touch display apparatus's drive circuit

CN
  • CN 205,334,420 U
  • Filed: 12/03/2015
  • Issued: 06/22/2016
  • Est. Priority Date: 12/03/2015
  • Status: Active Grant
First Claim
Patent Images

1. a drive circuit for touch display unit, described touch display unit includes touch display panel, and touch display panel includes multiple first electrode, and described drive circuit includes:

  • Display driver circuit, is used for driving the plurality of first electrode to perform image display and refreshes;

    Touch drive circuit, be used for driving the plurality of first electrode to perform self-capacitance touch-sensing;

    First earth terminal;

    Second earth terminal, for connecting the equipment ground of an electronic equipment, receives ground signalling;

    With Modulation circuit, it is connected between the first earth terminal and the second earth terminal, signal is modulated for the generation when touching drive circuit and driving described touch display panel to perform self-capacitance touch-sensing, and exporting described modulation signal to the first earth terminal, described modulation signal is supplied to the input signal of touch display panel for modulating described touch drive circuit;

    Described modulation circuit drives described touch display panel to perform to export ground signalling to described first earth terminal when image display refreshes at display driver circuit。

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