Patent ID: 8772805

Claim:
A light emitting diode (LED) comprising: a support substrate; a semiconductor stack disposed on the support substrate, the semiconductor stack comprising a p-type compound semiconductor layer, an n-type compound semiconductor layer, and an active layer disposed between the p-type compound semiconductor layer and the n-type compound semiconductor layer, the p-type compound semiconductor layer being disposed closer to the support substrate than the n-type compound semiconductor layer, the semiconductor stack having a first opening that divides the p-type compound semiconductor layer and the active layer, and exposes a portion of the n-type compound semiconductor layer, the portion facing the support substrate; an insulating layer disposed on the exposed portion of the n-type compound semiconductor layer and a sidewall of the opening; a transparent electrode layer disposed in ohmic-contact with the p-type compound semiconductor layer and covering the insulating layer and the p-type compound semiconductor layer; a reflective layer covering the transparent electrode layer, to reflect light emitted from the active layer away from the support substrate; a p-electrode covering the reflective layer; and an n-electrode disposed on an upper surface of the n-type compound semiconductor layer, wherein the p-electrode is electrically connected to the transparent electrode layer through at least one second opening formed in the reflective insulating layer, wherein a width of the first opening decreases as it approaches the n-type compound semiconductor layer.