Polishing method of Cu film and method for manufacturing semiconductor device
    7.
    发明申请
    Polishing method of Cu film and method for manufacturing semiconductor device 有权
    Cu膜的抛光方法及半导体器件的制造方法

    公开(公告)号:US20070093064A1

    公开(公告)日:2007-04-26

    申请号:US11540707

    申请日:2006-10-02

    摘要: A method for polishing a Cu film comprises contacting a Cu film formed above a semiconductor substrate with a polishing pad attached to a turntable, and supplying a first chemical liquid which promotes the polishing of the Cu film and a second chemical liquid which contains a surfactant, to the polishing pad while the turntable being rotated, thereby polishing the Cu film, while monitoring at least one of a table current of the turntable and a surface temperature of the polishing pad to detect a change in at least one of the table current of the turntable and the surface temperature of the polishing pad. The supply of the second chemical liquid is controlled in conformity with the change.

    摘要翻译: 一种用于抛光Cu膜的方法包括使形成在半导体衬底上的Cu膜与附着在转盘上的抛光垫接触,并提供促进Cu膜抛光的第一种化学液体和含有表面活性剂的第二种化学液体, 在转盘旋转的同时向抛光垫移动,由此抛光Cu膜,同时监测转台的工作台电流和抛光垫的表面温度中的至少一个,以检测抛光垫的表电流中的至少一个的变化 转盘和抛光垫的表面温度。 根据变化来控制第二化学液体的供给。