Patent ID: 11967511
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A plasma processing apparatus, comprising:
an electrostatic chuck having thereon a mounting surface on which a work-piece serving as a plasma processing target is mounted;
a base to which the electrostatic chuck is fixed;
a coolant path formed within the base along the mounting surface of the electrostatic chuck;
an inlet path formed within the base, which is extended from a backside of the mounting surface and connected to a bottom surface of the coolant path; and
a thermal resistor provided in a top surface of an inner wall of the coolant path and facing a connection portion between the inlet path and the coolant path,
wherein the thermal resistor is made of a material having a lower thermal conductivity than the base and is provided as a member separate from the base in the region, facing the connection portion between the inlet path and the coolant path, of the inner wall of the coolant path.