An array substrate and a touch display panel are provided. The array substrate includes a substrate, a pixel unit, a pixel electrode, and a capacitor electrode. An orthographic projection of the capacitor electrode on the substrate at least partially overlaps an orthographic projection of a subpixel electrode on the substrate. By arranging the capacitor electrode in a subpixel area and by making a capacitance value of a storage capacitor corresponding to the subpixel electrode greater than a capacitance value of a storage capacitor corresponding to a main pixel electrode and a common electrode, touch effects of a display panel can be improved.