Chemical mechanical polishing devices, pad conditioner assembly and polishing pad conditioning method thereof

摘要

Chemical mechanical polishing (CMP) devices, a pad conditioner assembly and a polishing pad conditioning method thereof are provided. The CMP device planarizes a wafer by rotating a carrier, which has a wafer mounted on a lower surface of the carrier, over a rotating polishing table while supplying a slurry onto a polishing pad attached to an upper surface of the rotating polishing table. The CMP device may include a pad conditioner assembly that conditions the polishing pad by supplying a pad conditioning liquid onto the polishing pad and simultaneously transferring a megasonic vibration to the pad conditioning liquid to remove foreign substances from a surface of the polishing pad.