Patent ID: 6299698
Filing Date: 2001-10-09
Classification: B08B,G11B,H01L

Abstract:
An apparatus adapted to scrub a planar surface and an edge surface of a semiconductor wafer, comprising:a platform adapted to support a semiconductor wafer to be cleaned; andan elongated brush adapted to rotate about an axis parallel to the semiconductor wafer, the brush comprising:a cylindrical portion adapted to contact a planar surface of the semiconductor wafer;a profiled portion, located at the end of the cylindrical portion, adapted to contact the edge surface of the semiconductor wafer;the profiled portion as well as the cylindrical portion comprising a single piece of cleaning material with integral cleaning nodules extending therefrom, the cleaning nodules having substantially planar free ends; andthe nodules of the profiled portion having a first height adjacent the cylindrical portion which is equal to the height of the nodules of the cylindrical portion and a second height at an end of the brush which is greater than the first height whereby the nodules of the profiled portion define an outwardly tapered cleaning surface which corresponds to an edge taper of the semiconductor wafer to be cleaned.