Patent ID: 6695684
Filing Date: 2004-02-24
Classification: B24B,H01L

Abstract:
A chemical mechanical polishing apparatus for manufacturing a semiconductor device, the chemical mechanical polishing apparatus comprising:a polishing pad; a conditioning disc having an abrasive surface for conditioning the polishing pad; a conditioner bath comprising a tank for accommodating a liquid, and a brush disposed in the tank for cleaning the abrasive surface of the conditioning disc, said brush having a main body in the form of a disc having circular upper and lower surfaces, and a plurality of bristles extending from said upper surface of the main body so as to apply pressure to and contact the surface of the conditioning disc, said bristles being only disposed along two concentric circular areas on the upper surface of said main body, one of said areas including the outer peripheral portion of the upper surface, and the other of said areas being spaced radially inwardly thereof; and a driving mechanism connected to said conditioning disc and operative to move said disc between a conditioning position at which the abrasive surface thereof contacts the polishing pad and a stand-by position in said tank.