Oled display substrate and manufacturing method, color shift adjustment method, and display apparatus

An OLED display substrate, comprising:

• a base substrate;
• a light emitting structure layer, which is arranged on a side of the base substrate and comprises a plurality of pixel units, wherein each of the pixel units comprises a plurality of sub-pixels;
• and
• a light extraction structure, which is arranged on a light emitting side of the light emitting structure layer;
• wherein the light extraction structure comprises a plurality of light extraction layers corresponding to the plurality of sub-pixels one-to-one;
• the orthographic projection of each of light extraction layers on the base substrate covers a corresponding sub-pixel, and the thicknesses of the light extraction layers corresponding to the sub-pixels of the same color are the same;
• the plurality of light extraction layers at least comprises a first light extraction layer corresponding to a first sub-pixel of a first color, and the thickness of the first light extraction layer is different from the thickness of the light extraction layers corresponding to the sub-pixels of other colors, the OLED display substrate renders preset colors under preset viewing angles.