Array substrate, preparation method of array substrate and display device

The embodiment of the invention provides an array substrate, a preparation method of the array substrate and a display device. The array substrate comprises a substrate body, a gate layer, an insulating layer and an anode layer, wherein the gate layer is arranged on the substrate body; the insulating layer is arranged on the gate layer; the anode layer is arranged on the insulating layer and opposite to the gate layer; and the insulating layer also comprises a conductive polymer. Through the array substrate, the preparation method of the array substrate and the display device in the embodiment, parasitic capacitance between the gate layer and the anode layer of the array substrate can be lowered and even removed, the influence on a screen current is reduced or avoided, and then the servicelife of the display device is prolonged. 本发明实施例提供一种阵列基板、阵列基板的制备方法及显示装置，阵列基板包括：衬底；栅极层，所述栅极层设置于所述衬底的上方；绝缘层，所述绝缘层设置于所述栅极层的上方；阳极层，所述阳极层设置于所述绝缘层的上方并与所述栅极层相对设置；其中，所述绝缘层内还包括导电聚合物。本发明实施例提供的阵列基板、阵列基板的制备方法及显示装置，能够降低甚至去除阵列基板栅极层和阳极层之间的寄