a display panel including pixels and touch electrodes;

a timing controller configured to:

output a touch enable signal based on a display driving section for displaying image and a second level in a touch driving section for providing a touch driving signal to the touch electrodes; and

a touch driver configured to provide a common voltage or the touch driving signal to the touch electrodes based on the touch-enable signal,

wherein a frame section between a start of one cycle of a vertical synchronization signal and a start of a next cycle of the vertical synchronization signal comprises a plurality of long horizontal blank (LHB) sections, each including the display driving section and the touch driving section,

wherein the touch enable signal includes a first level during the display driving section and the second level during the touch driving section,

wherein the timing controller is further configured to adjust the touch enable signal by varying a period of the first level and a period of the second level, and

wherein the touch enable signal sets at least some of the LHB sections to have periods of the first level that are different from each other, when lengths of the LHB sections are the same.