Patent ID: 11908666
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A plasma processing apparatus comprising:
a plasma processing chamber;
a base disposed in the plasma processing chamber;
an electrostatic chuck, disposed on the base, having a substrate support portion and an edge ring support portion on which an edge ring is disposed so as to surround a substrate;
a first clamping electrode disposed in the substrate support portion;
a first bias electrode disposed below the first clamping electrode in the substrate support portion;
a second clamping electrode disposed in the edge ring support portion;
a second bias electrode disposed below the second clamping electrode in the edge ring support portion;
a first power source electrically connected to the first bias electrode; and
a second power source electrically connected to the second bias electrode.