Patent ID: 11875970
Assignee: ADVANCED MICRO-FABRICATION EQUIPMENT INC. CHINA
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A plasma processing apparatus, comprising:
a vacuum chamber;
a base disposed downstream of the vacuum chamber, a first fluid passage being provided inside the base, the first fluid passage being configured for connecting to a first fluid source;
an electrostatic chuck disposed on the base, the electrostatic chuck having a first supporting face for support a substrate;
a focus ring disposed peripheral to the electrostatic chuck;
a heat conducting ring disposed around the base, the heat conducting ring being disposed below the focus ring, the heat conducting ring enclosing at least part of the base, a second fluid passage being provided in the heat conducting ring, the second fluid passage having a fluid inlet and a fluid outlet connected to a second fluid source, the second fluid entering the second fluid passage via the fluid inlet and flowing out of the second fluid passage from the fluid outlet, and the fluid inlet and fluid outlet being in same horizontal plane, heat conduction being enabled between the heat conducting ring and the focus ring; and
gas intake means disposed at the top of the vacuum chamber, the gas intake means being configured for supplying a reactant gas into the vacuum chamber;
wherein the distances from top of the second fluid passage to bottom of focus ring vary along perimeter of the second fluid passage, such that the top of the second fluid passage rises from the fluid inlet towards the fluid outlet.