Patent ID: 11961755
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A substrate support disposed inside a substrate processing apparatus for performing plasma processing on a substrate, the substrate support comprising: a substrate support portion having an electrostatic chuck for adsorbing the substrate and a substrate heater electrode in the electrostatic chuck; a ring support supporting an edge ring disposed to surround the substrate and having an edge ring heater electrode inside; a base having a central stage on which the substrate support portion is disposed, and an outer peripheral stage on which the ring support is disposed on an outer peripheral side of the central stage; a first power feeding terminal disposed immediately below the substrate support portion to supply a power to the substrate heater electrode; and a second power feeding terminal disposed immediately below the ring support to supply the power to the edge ring heater electrode, wherein an upper surface of the outer peripheral stage is positioned lower than an upper surface of the central stage, and a thickness of the ring support is equal to or larger than 40% of a thickness of the substrate support portion.