Display device

A display device, comprising:

• a substrate;
• a barrier layer formed on the substrate and having a plurality of through holes;
• a plurality of light-emitting diodes positioned in the plurality of through holes in the barrier layer, respectively;
• and
• a plurality of lenses positioned in the plurality of through holes in the barrier layer such that each of the lenses has a first surface opposed to the substrate and a convex surface on a second surface on a back of the first surface, the light-emitting diodes are positioned between the substrate and the lenses, respectively, and the convex surface of each of the lenses is formed such that a height of a top of the convex surface from the substrate is greater than a height of an upper surface of the barrier layer from the substrate.