Display panels, display devices and methods of manufacturing display panel

A display device, comprising the display panel, wherein the display panel comprises:

• a substrate;
• a light emitter on a side of the substrate;
• a first electrode on a side of the light emitter away from the substrate;
• and
• a light collimator on a side of the first electrode away from the substrate;
• wherein the light collimator comprises at least one microstructure;
• and wherein in a direction away from the substrate, a cross-sectional area of each of the at least one microstructure decreases.

A method of manufacturing a display panel, comprising:

• forming an epitaxial layer on a side of a support substrate, wherein the epitaxial layer comprises a second semiconductor layer, a light emitting layer, and a first semiconductor layer that are stacked in sequence;
• forming a bonding metal layer on a side of the epitaxial layer away from the support substrate;
• bonding the epitaxial layer to a substrate by the bonding metal layer;
• removing the support substrate, and patterning the epitaxial layer to form a plurality of light emitters;
• forming a first electrode on a side of the plurality of light emitters away from the substrate;
• forming a light collimator on a side of the first electrode away from the substrate, wherein the light collimator comprises at least one microstructure;
• and wherein in a direction away from the substrate, a cross-sectional area of each of the at least one microstructure decreases.