Patent ID: 7156725
Filing Date: 2007-01-02
Classification: B24B

Abstract:
1. A substrate polishing machine comprising: a polishing surface; and a substrate carrier for holding a substrate and bringing it into contact with the polishing surface; the substrate carrier comprising: a carrier body; a substrate holding member for holding a substrate with a surface of the substrate to be polished directed towards the polishing surface; and a substrate holding member positioning device provided on the opposite side of the substrate holding member relative to the side of the same for holding the substrate, the substrate holding member positioning device including a flexible member connected between the substrate carrier body and the substrate holding member to define an expandable chamber therebetween, the expandable chamber being designed to be filled with a non-compressible fluid and to be extendible towards the polishing surface by filling a non-compressible fluid to adjustably position the substrate holding member relative to the carrier body; a retainer ring which is integrally formed with the carrier body and is positioned to surround the substrate held by the substrate holding member, the substrate being adjustably positioned relative to the retainer ring by adjusting an amount of the non-compressible fluid filled in the expandable chamber; a seal ring positioned inside the retainer ring and provided on and extending along the peripheral edge of the substrate holding member, the substrate held by the substrate holding member being sealingly engaged with the seal ring to cooperate with the seal ring and the substrate holding member to define a sealed chamber; and at least one member provided in the sealed chamber to define a plurality of chambers which can be independently supplied with fluids under desired pressures.