Patent ID: 7510460
Filing Date: 2009-03-31
Classification: B24B

Abstract:
1. A substrate polishing apparatus, comprising: a table having a surface; a polishing member fixed to said surface of said table for polishing a surface of a substrate by relative movement between the substrate and said polishing member, said polishing member having a surface with a groove therein; a substrate support member for pressing the substrate onto said surface of said polishing member; an optical system for irradiating the surface of the substrate with light through a through-hole provided in said polishing member and for receiving a reflected light reflected from the surface of the substrate; a monitoring device for monitoring a status of polishing of the substrate using said optical system; and a liquid-feeding opening in said table for feeding a translucent liquid into said through-hole, wherein said through-hole is positioned in said polishing member so as to be remote from said groove in said surface of said polishing member, wherein: said table is movably mounted so as to have a direction of movement; said table has a liquid-discharging opening disposed so that a direction from said liquid-feeding opening to said liquid-discharging opening is opposite to the direction of movement of said table; and said liquid-discharging opening is positioned to communicate with said through hole and so as to face toward the substrate support member.