The present disclosure relates to organic light-emitting diode display device, manufacturing method therefor and display apparatus. The organic light-emitting diode display device comprises: a substrate and a plurality of sub-pixel units arranged on the substrate. Each sub-pixel unit comprises a first electrode, a light-emitting functional layer and a second electrode arranged in this order on the substrate. A surface of the first electrode away from the substrate comprises a plurality of first grooves arranged in parallel with each other with equal width and equal spacing. A section of the first electrode is serrated. A depth of the plurality of first grooves is less than a maximum distance from the surface of the first electrode away from the substrate to the substrate. For some of the plurality of sub-pixel units, the plurality of first grooves have different widths, and spacings between adjacent two of the plurality of first grooves are different.