Patent attributes
The present invention relates to an array substrate, a fabricating method thereof, and a display device. The array substrate comprises a thin film transistor, an auxiliary electrode which is arranged in a same layer as an active layer of the thin film transistor, and a transparent cathode which is electrically connected with the auxiliary electrode, wherein the active layer is an oxide semiconductor, and the auxiliary electrode is an electric conductor which is formed by performing a modification treatment on the oxide semiconductor. According to technical solutions of the present invention, the active layer and the auxiliary electrode are arranged in a same layer, a pattern of the active layer and the auxiliary electrode can be formed by a same etching process, and a separate process for forming the auxiliary electrode is not required, thus reducing the overall process time of the array substrate and saving the fabricating cost.