Patent ID: 11970784
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC C

Claim 13:
14. The method for manufacturing a nitride semiconductor substrate according to claim 9,
wherein in the first step, a first c-plane growth region grown with the (0001) plane as a growth surface is formed in the first layer,
a convex portion is formed at a position where the (0001) plane disappears and terminates as an inflection point that is convex upward in the first c-plane growth region, and a pair of inclined portions are formed on both sides of the first c-plane growth region interposing the convex portion, as a locus of an intersection between the (0001) plane and the inclined interface, and
an angle formed by the pair of inclined portions is 70° or less.