The present disclosure provides a display backboard, a method for fabricating the same and a display device. The display backboard includes a plurality of pixel units arranged in an array, each of the pixel units includes a plurality of sub-pixels, and each of the sub-pixels includes a substrate, a first electrode, a light emitting layer, and a second electrode stacked in sequence. The plurality of the sub-pixels have different emission colors, and thicknesses of the first electrodes among the plurality of the sub-pixels are different, and the thickness of the first electrode is configured so that an emission dipole of the sub-pixel is located at a second anti-node of standing wave on the first electrode side.