Patent ID: 11881407
Assignee: DISCO CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A processed wafer made of silicon carbide comprising:
a one side;
an other side opposite to the one side;
a beveling portion formed on a side surface connecting the one side and the other side at an outer edge portion of the silicon carbide; and
an altered layer at a position having a first depth from the other side, wherein
an area of the other side is larger than an area of the one side in the beveling portion,
a second depth from a boundary between the other side and the beveling portion to the side surface connecting the one side and the other side is shorter than the first depth from the other side to the altered layer in a depth direction from the other side to the one side, and
the altered layer extends to the beveling portion at the side surface of the processed wafer.