Driving method, touch sensing circuit, display panel, and touch display device

A driving method of a touch display device having a display panel in which a plurality of data lines and a plurality of gate lines are arranged and a plurality of sub pixels defined by the plurality of data lines and the plurality of gate lines are arranged, the touch display device having a display mode for displaying an image and a touch mode for sensing a touch, the driving method comprising:

• driving data lines and gate lines in a display section for the display mode;
• and
• outputting a touch driving signal of a pulse type for driving at least one of a plurality of touch electrodes, which are arranged outside or inside the display panel, in a touch section for the touch mode,
• wherein each touch section includes k or more unit touch sections, where k is a natural number equal to or greater than 2,
• wherein the touch driving signal output in each of the k or more unit touch sections has a constant frequency, and
• wherein the frequency of the touch driving signal output in at least one unit touch section of the k or more unit touch sections is different from the frequency of the touch driving signal output in another unit touch section.

A touch sensing circuit that is included in a touch display device having a display mode for displaying an image and a touch mode for sensing a touch, the touch sensing circuit comprising:

• a signal output unit that outputs a touch driving signal of a pulse type for driving at least one of a plurality of touch electrodes for sensing a touch in one or more touch sections for the touch mode;
• and
• a signal detecting unit that detects a signal for sensing a touch from the touch electrode supplied with the touch driving signal,
• wherein each of the one or more touch sections for the touch mode includes k or more unit touch sections, where k is a natural number equal to or greater than 2,
• wherein the touch driving signal output in each of the k or more unit touch sections has a constant frequency, and
• wherein the frequency of the touch driving signal output in at least one unit touch section of the k or more unit touch sections is different from the frequency of the touch driving signal output in another unit touch section.