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

Claim 13:
14. A chemical mechanical polishing apparatus comprising:
a platen to hold a polishing pad;
a carrier head to hold a substrate against a polishing surface of the polishing pad during a polishing process; and
a temperature control system including a source of heated fluid and an arm extending over the platen, the arm having a base plate forming a bottom of the arm, wherein a plurality of openings having predetermined fixed sizes extend from a common plenum in the arm through the base plate, wherein the common plenum is coupled to the source of heated fluid, wherein the arm is located such that the openings are positioned over the platen for by a gap to deliver the heated fluid from the common plenum onto the polishing pad, wherein each of a first plurality of radial positions along the common plenum has at least two laterally separated openings, and wherein each of a second plurality of radial positions along the common plenum has a single opening.