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Display device with touch sensor, potential control method and program

  • US 9,207,481 B2
  • Filed: 11/13/2012
  • Issued: 12/08/2015
  • Est. Priority Date: 11/22/2011
  • Status: Active Grant
First Claim
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1. A display device with a touch sensor comprising:

  • plural display pixel electrodes;

    a common electrode arranged opposite to the display pixel electrodes;

    a display function layer having an image display function;

    a display control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal; and

    a touch detection electrode provided opposite to the common electrode and forming capacitance between the touch detection electrode and the common electrode,wherein a drive voltage for display applied to the common electrode by the display control circuit is used as a drive signal for the touch sensor,wherein a signal supplied to gates of TFT circuits included in the display pixel electrodes is one of a pulse wave signal and a signal in which different three potentials are switched at given timings, andwherein the three potentials include a first potential during the TFT circuits being off, a second potential for turning on the TFT circuits, and a third potential at the time of supplying the drive signal for the touch sensor.

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