Patent ID: 7979942
Filing Date: 2011-07-19
Classification: B08B,H01L

Abstract:
1. A substrate treatment apparatus comprising: a substrate holding mechanism for holding a substrate; a first brush made of an elastically deformable material and having a cleaning surface inclined with respect to a perpendicular direction perpendicular to one surface of the substrate held by the substrate holding mechanism; a first brush moving mechanism for moving the first brush with respect to the substrate held by the substrate holding mechanism; a controller for controlling the first brush moving mechanism so that the cleaning surface is made to contact with a peripheral area on the one surface and a peripheral end face of the substrate held by the substrate holding mechanism; a first brush relative movement mechanism for relatively moving the first brush and the substrate held by the substrate holding mechanism so that the first brush is moved in a circumferential direction of the substrate; and a first pushing pressure holding mechanism for holding a pushing pressure of the first brush in the direction perpendicular to the peripheral area on the one surface of the substrate at a preset pushing pressure, the first pushing pressure holding mechanism being arranged to hold the pushing pressure at the preset pushing pressure during the relative movement of the substrate and the first brush regardless of a warp deformation of the substrate, wherein the first pushing pressure holding mechanism includes an air cylinder, an air supply pipe connected to the air cylinder, and a relief valve arranged in the air supply pipe.