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In-cell touch display device

  • US 9,335,852 B2
  • Filed: 09/23/2015
  • Issued: 05/10/2016
  • Est. Priority Date: 07/16/2014
  • Status: Active Grant
First Claim
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1. A driver circuit for driving an in-cell touch display device, the in-cell touch display device comprising a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, the driver circuit comprising:

  • a level shifter to modulate one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as a touch driving signal; and

    a selection circuit to select the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or to select the load-free gate driving signal responsive to a second state of the touch enable signal indicating a touch period,wherein during the display period the high gate scanning voltage or the low gate scanning voltage is provided to one or more of the gate lines of the in-cell touch display device, andwherein during the touch period the load-free gate driving signal is provided to one or more of the gate lines of the in-cell touch display device and the touch driving signal is provided to one or more of the touch electrodes.

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