Liquid crystal display device and control method thereof

Liquid crystal display device and control method thereof

  • CN 105,676,500 B
  • Filed: 03/29/2016
  • Issued: 12/29/2020
  • Est. Priority Date: 03/29/2016
  • Status: Active Grant
First Claim
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1. A liquid crystal display device comprising:

  • the liquid crystal display panel comprises an array substrate and a color film substrate which are oppositely arranged, wherein a metal layer is arranged above the color film substrate;

    a touch screen;

    the touch screen circuit chip is connected with the touch screen and used for detecting whether the touch screen is touched and outputting a high level or a low level;

    the power supply module is respectively connected with the touch screen circuit chip and the metal layer;

    the touch screen circuit chip generates a high level when detecting that the inductive capacitance on the touch screen continuously changes and the change time of the inductive capacitance is less than a preset threshold value, and generates a low level when detecting that the touch screen is not touched;

    the power supply module comprises a power supply unit and a selection unit, wherein the power supply unit is used for generating a direct current signal and an alternating current signal, and the selection unit is used for controlling the power supply unit to provide the direct current signal or the alternating current signal for the metal layer according to the high level or the low level.

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