Display device and method for manufacturing the same

A method for manufacturing a display device, the method comprising:

• forming a second semiconductor material layer, an active material layer, a first semiconductor material layer, and a conductive material layer on a semiconductor substrate;
• first etching the second semiconductor material layer, the active material layer, the first semiconductor material layer, and the conductive material layer to form a plurality of pillars each including the second semiconductor material layer, the active material layer, the first semiconductor material layer, and the conductive material layer;
• forming a reflective layer including openings in some of the pillars among the plurality of pillars, and second etching the pillars on which the reflective layer is not disposed;
• and
• forming a protective layer including an opening on entire surface of the semiconductor substrate on the pillars on which the reflective layer is not disposed.

An electronic device comprising:

• a display panel including:
• a substrate;
• a pixel electrode and a common electrode disposed on the substrate disposed apart from each other on the substrate;
• a light emitting element structure disposed on the common electrode, and including a light emitting pillar and a plurality of dummy pillars surrounding the light emitting pillar;
• and
• a connection electrode connecting the light emitting pillar and the pixel electrode,
• wherein the light emitting element structure includes:
• a reflective layer surrounding an upper surface and a side surface of the dummy pillar;
• and
• a protective layer surrounding the upper surface and the side surface of the dummy pillar and an upper surface and a side surface of the light emitting pillar.