Patent ID: 7459728
Filing Date: 2008-12-02
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: a crystal layer comprising: wherein the crystal layer has an approximately hexagonal pyramid shape comprising a plurality of tilt crystal planes that are tilted from a principal plane of a substrate and that intersect at a vertex of the approximately hexagonal pyramid shape, and wherein the first conductive type layer, the active layer, and the second conductive extend within planes parallel to the tilt crystal planes; an electrode formed on only a partial area of a first tilt crystal plane of the plurality of tilt crystal planes; wherein said electrode is formed in a region on the first tilt crystal plane having better crystallinity as compared to both a region of said first tilt crystal plane in the vicinity of the vertex and a region of said first tilt crystal plane in the vicinity of a bottom surface of the device; and wherein the light emitting device is constructed such that at least some light generated by the crystal layer is reflected by a surface of the tilt crystal planes and emerges from the device through a light emergence plane on the bottom surface of the device.