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Liquid crystal display integrated touch screen panel

  • US 9,348,448 B2
  • Filed: 09/22/2011
  • Issued: 05/24/2016
  • Est. Priority Date: 11/08/2010
  • Status: Active Grant
First Claim
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1. A liquid crystal display integrated touch screen panel, comprising:

  • a first substrate having a plurality of gate wires and a plurality of data wires and having a plurality of pixels, each pixel including a thin film transistor and a pixel electrode, wherein the thin film transistor includes a first electrode connected to a data wire of the plurality of data wires, a gate electrode connected to a gate wire of the plurality of gate wires, and a second electrode connected to the pixel electrode;

    a second substrate opposite to the first substrate;

    an insulating layer on the pixel electrodes;

    a plurality of transparent electrodes arranged in a first direction on the insulating layer;

    a plurality of metal electrodes, each metal electrode including a coupling part attached to a side of a respective one of the transparent electrodes such that the coupling part and the respective one of the transparent electrodes define a single driving electrode, and each metal electrode including an extending part that extends beyond the respective one of the transparent electrodes to form a driving wire that receives a driving signal;

    a plurality of sensing electrodes arranged in a second direction on the second substrate, the second direction intersecting the first direction; and

    a liquid crystal layer between the first substrate and the second substrate, the liquid crystal layer being between the metal electrodes and the sensing electrodes and between the transparent electrodes and the sensing electrodes,wherein the pixel electrodes, the transparent electrodes, the metal electrodes, the sensing electrodes and the liquid crystal layer are located with respect to each other such that liquid crystal molecules of the liquid crystal layer are rearrangeable by a voltage corresponding to a difference between a voltage applied to the pixel electrodes and a voltage applied to the transparent electrodes and the metal electrodes, and such that a touch contact with the liquid crystal display is recognizable by a change in mutual capacitance between the sensing electrodes and the transparent electrodes and the metal electrodes.

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