Patent ID: 11862684
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC H

Claim 2:
3. The recycle wafer of silicon carbide according to claim 1, wherein
the silicon carbide substrate further has an outer peripheral surface, a first inclined surface, and a second inclined surface, the first inclined surface being continuous to each of the first main surface and the outer peripheral surface and being inclined toward the second main surface as the first inclined surface extends from the first main surface to the outer peripheral surface, the second inclined surface being continuous to each of the second main surface and the outer peripheral surface and being inclined toward the first main surface as the second inclined surface extends from the second main surface to the outer peripheral surface,
the first silicon carbide layer is in contact with the first inclined surface,
the first silicon carbide layer has a third inclined surface opposite to the first inclined surface,
a length of the third inclined surface in a direction parallel to the first main surface is greater than a length of the second inclined surface in a direction parallel to the second main surface, and
a length of the third inclined surface in the direction perpendicular to the first main surface is greater than a length of the second inclined surface in a direction perpendicular to the second main surface.