Touch display panel, touch display device, and driving method thereof

A touch display device comprising:

• a substrate having an active area and a non-active area;
• a plurality of gate lines, a plurality of data lines, and a plurality of subpixels arranged on the substrate, wherein each of the plurality of subpixels includes a first electrode, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer;
• an encapsulation layer on the second electrode;
• a plurality of touch electrodes on the encapsulation layer;
• a plurality of touch routing lines electrically connected to the plurality of touch electrodes, wherein the plurality of touch routing lines are disposed along an inclined surface of the encapsulation layer, and electrically connected to a plurality of touch pads disposed in the non-active area;
• and
• a touch driving circuit configured to drive the plurality of touch electrodes,
• wherein the touch driving circuit outputs a first touch-driving signal during a first touch-driving period, and a second touch-driving signal during a second touch-driving period to at least some of the plurality of touch electrodes, and
• wherein the second electrode is applied with a constant voltage during the first touch-driving period and is applied with a signal corresponding to the second touch-driving signal during the second touch-driving period.