3-d structure for increasing contact surface area for leds

Abstract

Disclosed herein is an apparatus including a first three-dimensional (3-D) structure, a second 3-D structure, and a conductive layer. The first 3D structure includes a first-type doped semiconductor material having a semi-polar facet. The second 3-D structure forms a light-emitting diode (LED) and includes a second-type doped semiconductor material, an active layer, and the first-type doped semiconductor material. The conductive layer at least partially overlays and is in ohmic contact with the semi-polar facet. The conductive layer is configured to carry current that flows between the semi-polar facet and the active layer. In some embodiments, the first-type doped semiconductor material may include an N-type doped semiconductor material, and the second-type doped semiconductor material may include a P-type doped semiconductor material. The first-type doped semiconductor material of both 3-D structures may be etched from a common first-type doped semiconductor epitaxial layer.

Dependencies are inferred from the claim text.