Patent ID: 11919123
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 16:
17. A method of controlling polishing, comprising:
measuring a radial temperature profile of a first polishing pad during polishing of a substrate;
determining a pattern of openings that provide a mass flow profile to compensate for non-uniformity in the radial temperature profile;
obtaining a base plate having a plurality of openings having predetermined fixed sizes arranged in the pattern;
installing the base plate in an arm of a temperature control system of a chemical mechanical polishing system to form a common plenum with the plurality of openings positioned over a platen; and
polishing a substrate with a second polishing pad in the chemical mechanical polishing system while supplying a source of heating or coolant fluid to the common plenum such that the fluid flows through the plurality of openings onto the second polishing pad.