Patent ID: 7977223

Claim:
A method of forming a nitride semiconductor, comprising: forming an ion implantation region of a line/space pattern in a substrate by implanting ions into the substrate at an ion implantation dose between 1E17 ions/cm 2 and 5E18 ions/cm 2 and an ion implantation energy of 30˜50 keV; forming an In x Al y Ga 1-x-y N layer (0.3≧x≧y≧0.1, x+y≦1) on the surface of the substrate; and forming a metal nitride thin film over the surface of the substrate including the In x Al y Ga 1-x-y N layer by allowing the metal nitride thin film to grow from an upper portion of the space pattern to an upper portion of the line pattern through epitaxial lateral overgrowth.