The present disclosure provides an array substrate, a method for manufacturing the array substrate, a display panel and a display apparatus. The array substrate of the present disclosure includes a substrate and a pixel definition layer on the substrate, the pixel definition layer includes a base structure on the substrate, the base structure defines a plurality of openings on the substrate, each of the plurality of openings corresponds to one pixel region; and at least one protrusion structure provided on the base structure, wherein the at least one protrusion structure protrudes towards a direction away from the substrate, and the at least one protrusion structure has hydrophobic property.