Patent ID: 8361816

Claim:
A method of manufacturing a vertical GaN-based LED, comprising: forming a nitride-based buffer layer on a silicon substrate; forming a p-type GaN layer on the nitride-based buffer layer; sequentially forming an active layer and an n-type GaN layer on the p-type GaN layer; forming an n-electrode on the n-type GaN layer; forming a plating seed layer on the n-electrode; forming a structure supporting layer on the plating seed layer; removing the silicon substrate through wet etching and forming roughness on the entirety of a surface of the p-type GaN layer through over-etching; forming a p-electrode on the p-type GaN layer having the roughness formed; and forming a transparent conductive layer on the p-type GaN layer having the roughness formed thereon, prior to the forming of the p-electrode, wherein the removing the silicon substrate and the forming roughness on the entirety of the surface of the p-type GaN layer are performed in a single etching process of wet etching, wherein the p-type GaN layer has a thickness of more than 500 nm, and wherein the n-electrode is formed of Ta, Ti, Al, Ni and Au.