Patent ID: 11887893
Assignee: GLOBALWAFERS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method of manufacturing a semiconductor substrate, comprising:
using ion implantation to form a damaged layer on a silicon surface of an N-type silicon carbide substrate;
epitaxially growing a buffer layer and a silicon carbide layer on the silicon surface of the N-type silicon carbide substrate after the damaged layer is formed, wherein the silicon carbide layer is high-resistivity silicon carbide or N-type silicon carbide (N—SiC);
epitaxially growing a gallium nitride epitaxial layer on the silicon carbide layer to obtain a semiconductor structure composed of the buffer layer, the silicon carbide layer, and the gallium nitride epitaxial layer;
bonding a chip carrier on a surface of the gallium nitride epitaxial layer; and
separating the N-type silicon carbide substrate and the semiconductor structure at where the damaged layer is disposed.