Patent ID: 8530917
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. An optical semiconductor device comprising: an epitaxially-grown light emitting semiconductor layer; a reflective electrode layer provided at a counter face of said light emitting semiconductor layer opposing a light extracting face thereof; and a support electrode layer provided between said reflective electrode layer and the counter face of said light emitting semiconductor layer, wherein the support electrode layer supports said light emitting semiconductor layer and electrically connects said light emitting semiconductor layer to said reflective electrode layer, wherein said reflective electrode layer is provided beneath said support electrode layer when viewed in plan view, wherein a total area of said support electrode layer is smaller than an area of said reflective electrode layer, so that an air gap is provided at a periphery of said support electrode layer between said reflective electrode layer and the counter face of said light emitting semiconductor layer, and wherein said air gap and said reflective electrode layer together operate as a reflective mirror.