Touch display panel including touch sensing electrode and method for driving touch display panel

  • US 10,013,133 B2
  • Filed: 02/09/2016
  • Issued: 07/03/2018
  • Est. Priority Date: 09/07/2015
  • Status: Active Grant
First Claim
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1. A touch display panel, comprising:

  • a substrate;

    a plurality of first scan lines and a plurality of data lines both disposed on the substrate;

    a plurality of sub-pixels arranged in an array, which are defined by the data lines and the first scan lines which are insulated from and intersect the data lines;

    a plurality of touch sensing electrodes disposed in an array, each of which corresponds to a plurality of the sub-pixels;

    a plurality of first control switches, wherein each of the touch sensing electrodes is connected to at least one of the data lines via the first control switches;

    a plurality of second control switches and a first common electrode wiring disposed on the substrate, and each of the touch sensing electrodes is connected to the first common electrode wiring by at least one of the second control switches; and

    a plurality of second scan lines disposed on the substrate, and each of the second scan lines is connected to a control terminal of the first control switch and a control terminal of the second control switch, and is configured for controlling the first control switch to be turned on or off and the second control switch to be turned on or off;

    wherein each of the second scan lines is connected to the first common electrode wiring to receive a voltage signal from the first common electrode wiring, and the voltage signal serves as a turning-on signal for the first control switch and the second control switch;

    when the touch display panel being in a touch state, the first control switch is turned on, so that the at least one of the data lines is configured to provide a touch signal to the touch sensing electrode corresponding to the at least one of the data lines, and the second control switch is turned off, so that the first common electrode wiring is electrically insulated from each of the touch sensing electrodes; and

    when the touch display panel being in a display state, the first control switch is turned off, so that each of the data lines is configured to provide a display signal to the sub-pixel corresponding to the data line, and the second control switch is turned on, so that the first common electrode wiring is configured to provide the same electric potential to each of the touch sensing electrodes.

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