Patent ID: 7851810
Filing Date: 2010-12-14
Classification: B82Y,H01L,H01S

Abstract:
1. A semiconductor light emitting device comprising: a multi-layered semiconductor layer having at least a first conductive type cladding layer, an active layer, a second conductive type first cladding layer, an etching stop layer, and a second conductive type second cladding layer on a substrate, the multi-layered semiconductor layer includes a ridge groove positioned between ridges; wherein, the first and second conductive types are different; an upper section of the ridge groove is formed by an anisotropic etching process such that a first groove is created that extends from a surface of the multi-layered semiconductor layer to an area above the etching stop layer; the ridges of the first groove having vertical sidewalls; and a bottom section of the ridge groove is formed by an isotropic etching process such that a second groove is created that extends to a surface of an etching stop layer.