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Devices and methods for improving image quality in a display having multiple VCOMs

  • US 8,976,133 B2
  • Filed: 08/30/2012
  • Issued: 03/10/2015
  • Est. Priority Date: 06/08/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • maintaining a deactivation signal on pixels of the display after programming a frame of data onto the pixels of the display, but before a touch mode;

    supplying a first data signal to each pixel of a first set of pixels coupled to a first VCOM while maintaining the deactivation signal, wherein the first VCOM comprises a first area that contains the first set of pixels which share a first common electrode; and

    concurrently supplying a second data signal to each pixel of a second set of pixels coupled to a second VCOM while supplying the first data signal, wherein the second VCOM comprises a second area that contains the second set of pixels which share a second common electrode, wherein the first data signal has a first voltage level and the second data signal has a second voltage level different from the first voltage level;

    wherein the first data signal is supplied to each pixel of the first set of pixels and the second data signal is supplied to each pixel of the second set of pixels to inhibit image distortion during the touch mode.

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