Patent ID: 11969854
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. A polishing system, comprising:
a platen to support a polishing pad;
a carrier head to hold a substrate in contact with the polishing pad;
a motor to generate relative motion between the carrier head and the polishing pad;
an in-situ monitoring system to, for each region of a plurality of regions on the substrate being polished, generate a sequence of characterizing values for the region; and
a controller configured to
receive from the in-situ monitoring system, for each region of the plurality of regions, a sequence of characterizing values for the region,
for each region, determine a polishing rate for the region from the sequence of characterizing values for the region, and
for each particular parameter update time of a plurality of parameter update times prior to a polishing endpoint, calculate an adjustment of at least one of one or more controllable processing parameters of the polishing system to be made at the particular parameter update time, wherein calculation of the adjustment to be made at the particular parameter update time from the plurality of parameter update times includes calculation of an expected future adjustment of at least one of the one or more controllable processing parameters to be made at one or more future parameter update times subsequent to the particular parameter update time.