Patent ID: 6656026
Filing Date: 2003-12-02
Classification: B24B,H01L

Abstract:
A wafer polishing apparatus in which a wafer is pressed against a polishing pad so as to polish the wafer, comprising:a carrier; air spout openings provided to a bottom of said carrier, said air spout openings spouting air so as to form an air layer between said carrier and said wafer in order to press the wafer against the polishing pad by the air layer to polish the wafer; air bags provided to the bottom of said carrier for forming said air layer and for partially pressing a top face of said wafer; and pressing area regulating members which are detachably attached to the bottom of said carrier for regulating an area where said air bag presses the top face of said wafer, wherein said pressing area regulating members regulate different areas to be pressed, and said pressing area regulating members can be replaced so that an area for pressing said wafer with said air bag is changed.