Patent ID: 11955368
Assignee: IMEC VZW
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC H

Claim 6:
7. A reconditioning wafer configured to make indentations in a wafer support surface of a wafer holding stage in a semiconductor manufacturing or treatment tool, the reconditioning wafer comprising:
a carrier substrate; and
on a planar surface of the carrier substrate, at least one 2-dimensional array of regularly spaced protrusions, the protrusions having substantially the same shape and dimensions and wherein at least the tip of the protrusions is formed of an indentation material that is suitable to make the indentations, wherein a plurality of other arrays of protrusions are arranged on the surface of the carrier substrate, and wherein the protrusions of at least one array are different from the protrusions of the other arrays.