Display device having light emitting diodes with recessed portions between semiconductor layers

A display device comprising:

• a board including a wiring electrode;
• and
• a plurality of semiconductor light emitting diodes electrically connected to the wiring electrode,
• wherein each of the plurality of semiconductor light emitting diodes includes:
• a first conductivity type semiconductor layer;
• a barrier layer on the first conductivity type semiconductor layer;
• an active layer on the barrier layer;
• and
• a second conductivity type semiconductor layer on the active layer,
• wherein at least one of the barrier layer and the first conductivity type semiconductor layer includes a plurality of recessed portions in a plane direction of the at least one of the barrier layer and the first conductivity type semiconductor layer,
• wherein the first conductivity type semiconductor layer includes a plurality of first semiconductor layers and a plurality of second semiconductor layers that are alternately stacked, and
• wherein the plurality of recessed portions are between the plurality of first semiconductor layers.