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Liquid Crystal Display Device and Method of Driving the Same

  • US 20130307820A1
  • Filed: 05/14/2013
  • Published: 11/21/2013
  • Est. Priority Date: 05/18/2012
  • Status: Active Grant
First Claim
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1. A liquid crystal display (LCD) device comprising:

  • a liquid crystal panel configured to comprise a TFT substrate and a color filter substrate which are coupled to each other with a liquid crystal layer therebetween;

    a touch panel configured to comprise a plurality of electrode units parallel to the gate lines to detect a touch, each of the electrode units comprising a plurality of driving electrodes, formed in parallel to data lines formed in the TFT substrate, and a plurality of receiving electrodes formed in parallel to gate lines formed in the TFT substrate to intersect the driving electrodes;

    a common voltage generator configured to generate a common voltage;

    a touch sensing unit configured to supply the common voltage to the electrode units and sequentially supply a driving voltage to driving electrodes formed in scanned electrode units, corresponding to scanned gate lines which have received a scan signal for one frame period, to detect a touch; and

    a driving voltage generator configured to generate the driving voltage.

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