Display backboard, method for fabricating the same, and display device

A method for fabricating a display backboard, the display backboard comprising a plurality of pixel units arranged in an array, each of the pixel units comprising a plurality of sub-pixels, and each of the sub-pixels being formed by the following steps:

• forming, on a side of a substrate, a first electrode;
• forming, on a side of the first electrode away from the substrate, a light emitting layer;
• and
• forming, on a side of the light emitting layer away from the substrate, a second electrode,
• wherein 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.