Patent ID: 11911869
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A chemical mechanical polishing system comprising:
a polishing module comprising:
a platen having coolant channels; and
a platen temperature control system comprising:
a PID controller;
a flow controller comprising:
a housing having a supply inlet port, a return outlet port, a supply outlet port and a return inlet port; and
two or more valves for controlling coolant flow, wherein the two or more valves include a by-pass control valve configured to control the flow of coolant between the supply inlet port and the return outlet port; and

a heat exchanger; the flow controller configured to control an amount of coolant provided from the heat exchanger to the channels of the platen in response an output of the PID controller.