Patent ID: 9669510
Date: 2017-06-06
CPC Classifications: B24B,B24D,H01L

Claim:
1. A polishing cleaning mechanism configured to be in contact with a part of a rear surface of a substrate which is held in a substrate holding unit for holding the rear surface of the substrate and perform a polishing process and a cleaning process on the rear surface of the substrate, comprising: a polishing member including a polishing surface configured to polish the rear surface of the substrate; a cleaning member including a cleaning surface configured to clean the rear surface of the substrate; a first support member configured to support the polishing member and the cleaning member; and a relative movement mechanism configured to move each of the polishing surface of the polishing member and the cleaning surface of the cleaning member relative to the rear surface of the substrate held in the substrate holding unit by rotating the first support member, wherein a surface area of the polishing cleaning mechanism facing the substrate is smaller than a surface area of the substrate, wherein the polishing member and the cleaning member are disposed on the first support member such that an angle between the polishing surface and the cleaning surface is a right angle, wherein the first support member is supported on each of opposite ends of a support shaft, which extends in a horizontal direction, such that the polishing surface and the cleaning surface make a right angle when viewed in an extending direction of the support shaft and the first support member is rotatable about the support shaft, and wherein the polishing surface and the cleaning surface are moved relative to the rear surface of the substrate held in the substrate holding unit by horizontally rotating the support shaft about a vertical axis.