Array Substrate, Touch Display Panel and Touch Display Device

A touch display device comprising a touch display panel, wherein the touch display panel comprises an array substrate, a color filter substrate and a plurality of photo spacers between the array substrate and the color filter substrate, and the array substrate comprises:

• a plurality of pixel units each comprising a thin film transistor (TFT) and having a side length;
• a common electrode layer disposed over the plurality of pixel units, wherein the common electrode layer is divided into columns of self-capacitive electrodes, wherein each self-capacitive electrode overlaps with more than one pixel units in a direction perpendicular to the array substrate;
• a drive circuit;
• and
• a plurality of touch leads electrically connected to the drive circuit, wherein each of the plurality of touch leads is disposed parallel to and connected with one of the columns of the self-capacitive electrodes through at least two first via holes, wherein an interval between two adjacent first via holes connected with a same touch lead is greater than or equal to twice the side length of one of the pixel units, and
• wherein the first via holes connected with one touch lead are aligned staggered to the first via holes connected with an adjacent touch lead and none of the plurality of photo spacers overlaps with the first via holes in the direction perpendicular to the array substrate.