Patent ID: 8659045

Claim:
A light emitting device, comprising: a substrate; an epitaxial stack structure on said substrate, said epitaxial stack structure having a first portion and a second portion, wherein said epitaxial stack structure bottom-up comprises a first semiconductor layer of a first conductive type, an active layer and a second semiconductor layer of a second conductive type; a II/V group compound contact layer directly formed on said second semiconductor layer, wherein said second semiconductor layer is situated in said first portion of said epitaxial stack structure; a crystallized layer of a protrusion or recess type structure directly on top of said II/V group compound contact layer; a conductive layer covering said crystallized layer of a protrusion or recess type structure; a first electrode on said conductive layer; and a second electrode on said second portion of said epitaxial stack structure, wherein said second electrode is structurally separated from the structure on said first portion of said epitaxial stack structure and is of opposite conductive type to said first electrode.