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COMMON ELECTRODE CONNECTIONS IN INTEGRATED TOUCH SCREENS

  • US 20130141343A1
  • Filed: 12/06/2011
  • Published: 06/06/2013
  • Est. Priority Date: 12/06/2011
  • Status: Active Grant
First Claim
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1. An integrated touch screen comprising:

  • a stackup of material layers, the stackup including a plurality of display pixels disposed in an active region of the touch screen, each display pixel including a pixel electrode;

    a plurality of data lines disposed in the stackup, wherein each pixel electrode is electrically connected to one of the data lines;

    a plurality of common electrodes disposed in the stackup, each display pixel being associated with one of the common electrodes;

    a plurality of high-resistivity connections between common electrodes, each high-resistivity connection between common electrodes conductively connecting two of the common electrodes;

    a pixel material associated with each display pixel, the pixel material being disposed in the stackup;

    a display driver that controls voltages of the data lines and the common electrodes to apply a voltage to the pixel material associated with each display pixel, wherein a luminance of each display pixel is controlled based on an amount of the voltage applied to the pixel material; and

    a touch controller that applies drive signals to one or more of the common electrodes and that receives sense signals resulting from the drive signals, the sense signals indicating an amount of touch on the touch screen.

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