Patent ID: 11862439
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H  G | IPC C  G  H

Claim 0:
1. A substrate processing apparatus for processing a substrate, comprising:
a processing chamber accommodating the substrate,
a mounting table disposed in the processing chamber and configured to attract and hold the substrate using an electrostatic attractive force;
a charge amount measurement unit disposed in the processing chamber and configured to measure charge amount of a substrate attraction surface of the mounting table in a state where no substrate is mounted on the mounting table;
a charge neutralization mechanism configured to neutralize the substrate attraction surface of the mounting table in a state where no substrate is mounted on the mounting table;
a retreating mechanism configured to make the charge amount measurement unit retreat from a measurement position facing the substrate attraction surface of the mounting table, the retreating mechanism including a supporting shaft and a driving unit; and
a shield member disposable between the charge amount measurement unit located at the measurement position and the mounting table and provided with an opening smaller than the substrate attraction surface of the mounting table,
wherein the supporting shaft extends vertically along a side of the mounting table, with a supporting portion and a connecting portion being connected to the supporting shaft in an order from top to bottom,
the charge amount measurement unit is disposed below one end of the supporting portion extending in a direction orthogonal to the supporting shaft, and
the shield member is connected to the connecting portion extending in a direction orthogonal to the supporting shaft.