An embodiment of the disclosure provides an array substrate comprising: a base substrate, an active layer and a transparent electrode disposed on the base substrate, an etch stop layer disposed on the active layer and configured for protecting a portion of the active layer, wherein the active layer, the transparent electrode and the etch stop layer are formed through one patterning process and one doping process, the doped region and the first transparent electrode are made of same material and are disposed on the same layer.