Patent ID: 8728235

Claim:
A manufacturing method for three-dimensional GaN epitaxial structure comprising: a disposing step, in which a substrate of LiAlO 2 and a source metal of Ga are disposed inside a vacuum chamber; an exposing step of importing N ions in plasma state and generated by a nitrogen source into the chamber; a heating step of heating up the source metal to generate Ga vapor; and a growing step of forming a three-dimensional GaN epitaxial structure on the substrate by reaction between the Ga vapor and the plasma state of N ions, wherein a temperature of the substrate for forming the three-dimensional GaN epitaxial structure is higher than 700° C. and lower than 750° C., and a N/Ga flux ratio is 36, with a flow rate of N 2 being 8.25×10 −6 torr, and wherein a first end of the three-dimensional GaN epitaxial structure is a taper terminal connecting with the substrate and a second end of the three-dimensional GaN epitaxial structure is a broadened free end with a hexagonal disk-like surface.