The present invention provides array substrate, manufacturing method thereof, and display device, relating to manufacturing technology field of liquid crystal display. The array substrate of the present invention includes: a base substrate, on which a plurality of gate lines and a plurality of data lines are provided; shielding electrodes, which are provided above and electrically insulated from the data lines, and the shielding electrodes at least partially cover the data lines; first electrodes, which are provided in the same layer as the shielding electrodes and are electrically insulated from the shielding electrodes; second electrodes, which are provided above and electrically insulated from the first electrodes, wherein, the shielding electrodes are applied with a shielding voltage signal, the second electrodes are applied with a stable voltage signal, and no electric field or weak electric filed is formed between the shielding electrodes and the second electrodes.