Light emitting element, method of manufacturing the same, and display device including the same

A light emitting element, comprising:

• a first semiconductor layer doped with a first polarity;
• an active layer on the first semiconductor layer;
• a second semiconductor layer doped with a second polarity opposite to the first polarity;
• and
• an insulating layer surrounding side surfaces of the first semiconductor layer, the second semiconductor layer, and the active layer,
• wherein a surface roughness of a lower surface of the first semiconductor layer is different from a surface roughness of an upper surface of the second semiconductor layer.

A display device, comprising:

• a base substrate;
• first and second electrodes spaced apart from each other;
• a first contact electrode on an upper surface of the first electrode;
• a second contact electrode on an upper surface of the second electrode;
• and
• at least one light emitting element in a region in which the first electrode and the second electrode are spaced apart from each other,
• wherein both side surfaces of the light emitting element contacting the first contact electrode and the second contact electrode have a flat shape to be parallel to a surface perpendicular to the base substrate.