Patent ID: 9634193
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A light-emitting diode, comprising: a substrate; a first semiconductor layer disposed on the substrate; an active layer disposed on the first semiconductor layer; a second semiconductor layer disposed on the active layer and having a conductivity type different than that of the first semiconductor layer; a reflective metal layer disposed on the second semiconductor layer; a stress relief layer disposed directly on the reflective metal layer; a conductive barrier layer disposed on the stress relief layer such that the conductive barrier layer directly contacts the second semiconductor layer and covers a side surface of the reflective metal layer and the stress relief layer; a lower insulation layer disposed on the conductive barrier layer, and comprising a first opening that exposes a top portion of the conductive barrier layer and a second opening that exposes a portion of the first semiconductor layer; and an upper insulation layer disposed on the lower insulation layer, and comprising a first opening that is wider than the first opening of the lower insulation layer and that exposes the top portion of the conductive barrier layer exposed by the first opening of the lower insulation layer, wherein the stress relief layer is disposed between the reflective metal layer and the conductive barrier layer, and is configured to absorb stress caused by differences in the coefficient of thermal expansion of the reflective metal layer and the conductive barrier layer.