Patent ID: 8323075

Claim:
A polishing head having at least a disklike carrier for holding a back surface of a workpiece in which an annular projecting portion that projects upward and an annular carrier-engagement portion that overhangs inward from the projecting portion are formed in a peripheral portion, a head body for holding the carrier in which a space portion is formed inside and an annular head-body-engagement portion that overhangs outward is formed outside, the head body being rotatable, and a diaphragm for connecting the head body with the carrier and sealing the space portion of the head body; the polishing head holding the back surface of the workpiece with the carrier in condition where pressure of the sealed space portion is adjusted with a pressure adjustment mechanism connected with the space portion in the case of polishing a front surface of the workpiece by bringing into sliding contact with a polishing pad attached onto a turn table, and demounting the workpiece from the polishing pad by lifting the head body and the carrier-engagement portion with the carrier-engagement portion hooked on the head-body-engagement portion in the case of demounting the workpiece from the polishing pad by lifting the polishing head after polishing the workpiece; wherein a spacer located at least between the carrier-engagement portion and the head-body-engagement portion is provided in a part of the carrier-engagement portion and/or the head-body-engagement portion and the spacer abuts on the carrier-engagement portion and/or the head-body-engagement portion at the time of lifting the head body so that the workpiece is demounted from the polishing pad by lifting the carrier with it inclined in the case of demounting the workpiece from the polishing pad by lifting the polishing head.