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LIQUID CRYSTAL DISPLAY DEVICE

  • US 20130293491A1
  • Filed: 03/27/2013
  • Published: 11/07/2013
  • Est. Priority Date: 05/02/2012
  • Status: Active Grant
First Claim
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1. A liquid crystal display device, comprising:

  • a first substrate;

    a second substrate having detection electrodes of a touch panel;

    a liquid crystal held between the first substrate and the second substrate;

    a plurality of pixels arrayed in a matrix, each having a pixel electrode and a counter electrode divided into a plurality of blocks; and

    a driver circuit that applies a counter voltage and a touch panel scanning voltage to the divided counter electrodes of the respective blocks,wherein the divided counter electrodes of the respective blocks are commonly provided on the respective pixels of a plurality of continuous display lines,wherein the divided counter electrodes of the respective blocks double as scanning electrodes of the touch panel,wherein, if N is an integer of 2 or larger, the driver circuit sequentially applies the touch panel scanning voltage to the divided counter electrodes of the respective blocks in N horizontal scanning periods while a drive pulse for displaying an image is not varied, andwherein a drive frequency of the touch panel scanning voltage which is applied to the divided counter electrodes of the respective blocks in the respective periods of the N horizontal scanning periods is different in each of the N horizontal scanning periods.

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