Patent ID: 9136432
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A light emitting diode comprising: a substrate; a semiconductor stack disposed on the substrate, the semiconductor stack comprising a p-type compound semiconductor layer, an active layer, and an n-type compound semiconductor layer; a reflective metal layer disposed between the substrate and the semiconductor stack and in ohmic contact with the p-type compound semiconductor layer, the reflective metal layer comprising a groove exposing a portion of the semiconductor stack; a first electrode pad disposed on the n-type compound semiconductor layer; an electrode extension extending from the first electrode pad and disposed over the groove; and a first insulating layer disposed between a side surface of the first electrode pad and a side surface of the semiconductor stack, wherein the n-type compound semiconductor layer comprises an n-type contact layer, and wherein the n-type contact layer has an Si doping concentration of 5 to 7×10