Patent ID: 9017146
Filing Date: 2015-04-28
Classification: B24B

Abstract:
1. A wafer polishing apparatus, comprising: a polishing plate having an upper face, on which a polishing cloth is adhered; a polishing head having an lower face for holding a wafer; and a slurry supplying section for supplying slurry to the upper face of the polishing plate, wherein the wafer held by the polishing head is pressed onto the polishing cloth, the polishing plate and the polishing head are relatively moved with respect to each other, with supplying slurry, so as to polish the wafer, wherein the polishing plate includes: wherein a head cleaning section, which cleans the polishing head, or a wafer cleaning section, which cleans the polished wafer, is provided to a center part of the polishing plate and located on the inner side of the innermost polishing zone.