Patent ID: 7393763

Claim:
A method of manufacturing a monocrystalline gallium nitride localized substrate comprising the steps of: growing silicon nitride on a surface of a monocrystalline silicon substrate; applying a photoresist on the silicon nitride; superposing a photomask on the photoresist and developing the photoresist; etching the silicon nitride using the photoresist as a mask; peeling off the developed photoresist; thereafter, carbonizing an area of the surface of the monocrystalline silicon substrate into monocrystalline silicon carbide, the area having no silicon nitride, growing gallium nitride on the silicon nitride and on the monocrystalline silicon carbide; thereafter, selectively etching the gallium nitride on the surface of the silicon nitride by wet etching so as to etch the remaining gallium nitride on the surface of the silicon nitride.