Patent ID: 8618565
Filing Date: 2013-12-31
Classification: H01L

Abstract:
1. A light emitting diode (LED), comprising: a support substrate; a semiconductor stack positioned on the support substrate, the semiconductor stack comprising a p-type compound semiconductor layer, an active layer, and an n-type compound semiconductor layer; a first electrode positioned between the support substrate and the semiconductor stack, in ohmic contact with the semiconductor stack; a first bonding pad positioned on a portion of the first electrode that is exposed outside of the semiconductor stack; and a second electrode positioned on the upper surface of the semiconductor stack, wherein the semiconductor stack has a substantially frusto-pyramidal shape and comprises first protrusions formed on the upper surface of the semiconductor stack and second protrusions formed on the side surfaces of the semiconductor stack, and wherein the second protrusions comprise portions of the p-type compound semiconductor layer, the active layer, and the n-type compound semiconductor layer.