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

Claim 0:
1. 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 continuous layer of the indentation material conformally covers the entire array of protrusions, including the surface of the carrier substrate in between the protrusions, or
wherein the indentation material is present in the form of a non-continuous layer that is present at least on the tip of the protrusions.