Patent ID: 6899609

Claim:
Chemical mechanical polishing (CMP) equipment for use in planarizing a semiconductor wafer, said equipment comprising: a turntable, a polishing pad disposed atop said turntable; a slurry supply unit that dispenses slurry onto an upper surface of the polishing pad; a head polishing unit having a polishing head positionable over the upper surface of the polishing pad, said polishing head being rotatable to rotate a wafer atop said polishing pad; a conditioning unit having a pad conditioning head that is movable into contact with said polishing pad and has a serrated surface that conditions said polishing pad when in contact with the pad; and a cleaning solution supply unit through which a cleaning solution is supplied, said cleaning solution supply unit including at least one cleaning solution supply line disposed beside said turntable, and a spray nozzle disposed at an end of each said cleaning solution supply line and oriented to spray the cleaning solution over a region encompassing the entire upper surface of said polishing pad, and said polishing head and said conditioning head.