The present invention discloses an array substrate and a manufacturing method for the same, and a display device. By adopting the manufacturing method for the array substrate provided by the embodiments of the present invention, via holes with relatively small hole sizes in a color resin layer are realized, so that the aperture ratio of pixels is improved. The manufacturing method for the array substrate includes: forming thin film transistors on a substrate; forming a color resin layer on the substrate on which the thin film transistors are formed; forming a first light-blocking layer with a light-shielding effect on the color resin layer, the photolithographic resolution of the first light-blocking layer being greater than that of the color resin layer; and performing a patterning process on the first light-blocking layer and the color resin layer to form via holes in the color resin layer.