Patent ID: 7122847

Claim:
A nitride semiconductor thin film, comprising: a substrate with a plurality of grooves formed in a top surface thereof; a leg portion formed within each of the grooves to prevent longitudinal growth of a nitride semiconductor; and formed with one of a film made of one selected from the group comprising S 1 0 2 , Si 3 N 4 , TiOx and ZrOx, a stacked film made of one selected from the group comprising S 1 O 2 , Si 3 N 4 , TiOx and ZrOx, a film made of one selected from the group comprising Ag, Al, Rh, Pt and Pd, and a multi-layered film made of one selected from the group comprising Ag, Al, Rh, Pt and Pd; a buffer layer formed on portions of the top surface of the substrate where the grooves have not been formed; and a nitride semiconductor thin film grown laterally on the buffer layer to cover the tops of the leg portions.