Patent ID: 8502242

Claim:
A light emitting device comprising: a first light emitting structure which includes a first semiconductor pattern of a first conductivity type, a second semiconductor pattern of a second conductive type, and a first active pattern, wherein the first light emitting structure is turned on or turned off according to a bias applied to the first semiconductor pattern and the second semiconductor pattern; a second light emitting structure which includes a third semiconductor pattern of the first conductivity type, a fourth semiconductor pattern of the second conductive type, and a second active pattern, wherein the second light emitting structure is turned on or turned off according to a bias applied to the third semiconductor pattern and the fourth semiconductor pattern; and a first electrode having an inclined sidewall and a bottom, wherein an upper surface of the first electrode allows light generated from the first active pattern or the second active pattern to escape from the first light emitting structure; an insulating pattern formed between the first electrode and the first light emitting structure, wherein the insulating pattern includes an oxide film, a nitride film, an oxynitride film, Al 2 O 3 , or AlN; an intermediate material layer formed between the first electrode and a substrate, wherein the intermediate material layer includes Au, Ag, Pt, Ni, Cu, Sn, Al, Pb, Cr or Ti; and a barrier layer which is formed between the first electrode and the intermediate material layer, and includes a single layer, a laminate, or a combination thereof including Pt, Ni, Cu, Al, Cr, Ti or W, wherein at least one of the first to fourth semiconductor patterns and the first and second active patterns includes InxAlyGa(1-x-y)N, 0≦x≦1, 0≦y≦1, and the first electrode connected to the first semiconductor pattern of the first conductive type is formed of a material containing at least one of Al and Ag having high reflectivity, and has a bowl shape and an inclined sidewall.