Patent ID: 11948811
Assignee: EBARA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 11:
12. A polishing apparatus comprising:
a cleaning unit that cleans a wafer after polishing, wherein
the cleaning unit includes:
a cleaning tank that defines a cleaning space for cleaning the wafer;
a wafer rotation mechanism that is arranged inside the cleaning tank and holds and rotates the wafer;
a cleaning member that contacts and cleans a surface of the wafer, is rotatable around a central axis extending in a lateral direction, and has a length in an axial direction longer than a radius of the wafer;
a swing mechanism that swings the cleaning member around a swing axis located inside the cleaning tank to move the cleaning member from a retracted position outside of the wafer to a cleaning position directly above the wafer;
a second cleaning means that cleans the surface of the wafer; and
a second swing mechanism that swings the second cleaning means around a second swing axis located inside the cleaning tank to pass directly above a center of the wafer, wherein
the second swing mechanism swings the second cleaning means around the second swing axis to move the second cleaning means between a second retracted position outside the wafer and inside the cleaning tank, a second cleaning position directly above the wafer, and a maintenance position outside of the cleaning tank.