Patent ID: 6544111
Filing Date: 2003-04-08
Classification: B24B

Abstract:
A polishing apparatus comprising:a polishing table having one of a polishing section and a polishing tool attachment section at a surface of said polishing table and at least one thermal medium passage formed along said surface, wherein said at least one thermal medium passage comprises a plurality of temperature adjustment passages provided respectively in a plurality of temperature adjustment regions which are formed by dividing a surface area of said polishing table; a workpiece holder adapted to hold and press a workpiece against said polishing table; a plurality of sensors provided to correspond to locations of said plurality of temperature adjustment passages for measuring temperatures of said locations, respectively; and a temperature control unit operable to set a target temperature of each of said plurality of temperature adjustment passages and control a temperature of each of said plurality temperature adjustment passages according to a difference between the target temperature and a measured temperature of each of said locations.