An array substrate, a display panel and a display device are provided. The array substrate includes a base substrate and a plurality of sub pixels arranged on the base substrate, wherein each of the sub pixels includes a first electrode, a second electrode and a plurality of spacer strips, and the plurality of spacer strips is provided below the first electrode and the second electrode. By forming spacer strips which make a pixel electrode and a common electrode protruded on the array substrate, the horizontal electric field is enhance, the longitudinal electric field is suppressed, and thus the transmittance can be improved.