Chemical mechanical polishing apparatus for controlling polishing uniformity

A chemical mechanical polishing (CMP) apparatus includes a polishing pad on a polishing platen, a polishing head on the polishing pad, the polishing head having a membrane to hold a wafer on the polishing pad, and a polishing slurry feeding line to feed a polishing slurry, and a retainer ring around the membrane and in contact with the polishing pad to prevent detachment of the wafer, the retainerring including a polishing slurry feeding inlet connected to the polishing slurry feeding line to feed the polishing slurry onto the polishing pad. 一种化学机械抛光(CMP)装置包括：抛光台板上的抛光垫；抛光垫上的抛光头，该抛光头具有用于将晶片保持在抛光垫上的隔膜、以及用于馈送抛光浆料的抛光浆料馈送线；以及保持环，围绕隔膜并与抛光垫接触以防止晶片脱离，该保持环包括连接到抛光浆料馈送线的抛光浆料馈送入口，以将抛光浆料馈送到抛光垫上。