Display apparatus

A display panel, comprising:

• a substrate;
• and
• a pixel array on the substrate, the pixel array comprising a plurality of pixels, wherein
• each of the plurality of pixels comprises a plurality of sub-pixels, and each of the plurality of sub-pixels comprises a driving circuit layer, an uneven surface layer, and a light-emitting layer, which are stacked in manufacture processing sequence;
• the uneven surface layer comprises a plurality of concave-convex structures;
• at least two sub-pixels in each of the plurality of pixels emit light in different colors, and possess different numbers of concave-convex structures;
• the sub-pixels with a same color in the pixel array possess a same number of concave-convex structures;
• the display panel further comprises a pixel definition layer including a plurality of opening regions, the pixel definition layer is on one side of the uneven surface layer opposite from the substrate, and the concave-convex structures are in the plurality of opening regions;
• and
• a maximum height variation of the concave-convex structure h, is greater than a thickness of the light-emitting layer d.