Patent ID: 7837536
Filing Date: 2010-11-23
Classification: B24B,B24D

Abstract:
1. A polishing apparatus that polishes an inner circumferential surface of a disk-shaped substrate including a portion having a hole at the center thereof, the polishing apparatus comprising: a holding unit that holds piled workpieces in which a plurality of the disk-shaped substrates are piled; a polishing brush that is inserted into the portion having the hole of the disk-shaped substrates of the piled workpieces and is rotated; a cover member that covers the piled workpieces; and a polishing-liquid flowing-in unit that flows polishing liquid into the portion having the hole of the disk-shaped substrates of the piled workpieces covered by the cover member, and wherein the polishing flow-in unit flows fresh polishing liquid into a clearance between an inner circumference of the cover and an outer circumference of the piled disk-shaped substrates and the polishing liquid is supplied from an outer circumferential surface of the piled workpieces to the center portion having the hole.