SUBSTRATE STRUCTURE AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: A substrate structure and a manufacturing method of the same are provided to prevent Si from being melt-back through Ga by oxidizing the surface of a substrate and a pattern region after forming the pattern region. CONSTITUTION: A substrate structure comprises a substrate(20) and a buffer layer(22) The buffer layer is formed on the substrate by a certain pattern. A buffer layer is supported by a substrate protrusion which is formed after the surface of the substrate is etched. The bottom of a buffer layer which is not contacted with the substrate protrusion is exposed to outside. A nitride semiconductor layer is formed through lateral growth which is rapider vertical growth.