Touch display substrate, method of manufacturing the same and display device

A method of manufacturing a touch display substrate, wherein the touch display substrate comprises a common electrode, a common electrode line connected to the common electrode, a touch electrode, and a touch signal line connected to the touch electrode, the common electrode is multiplexed as the touch electrode, and the common electrode line is multiplexed as the touch signal line, wherein the method comprises:

• forming one of the touch electrode and the touch signal line;
• forming an inorganic insulation layer and forming a via-hole in the inorganic insulation layer through a patterning process;
• and
• forming the other of the touch electrode and the touch signal line, the touch electrode being electrically connected to the touch signal line through the via-hole penetrating through the inorganic insulation layer.