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    • 2. 发明授权
    • Method for preventing Cu CMP corrosion
    • 防止Cu CMP腐蚀的方法
    • US06555477B1
    • 2003-04-29
    • US10152939
    • 2002-05-22
    • Chen-Fa LuChin-Hsiung HoMei-Ling ChenLiang-Kun Huang
    • Chen-Fa LuChin-Hsiung HoMei-Ling ChenLiang-Kun Huang
    • H01L21302
    • H01L21/7684H01L21/02071H01L21/3212
    • A method for preventing or reducing corrosion of copper containing semiconductor features during chemical mechanical polishing (CMP) including providing a semiconductor wafer polishing surface including a copper layer overlying a copper filled anisotropically etched feature; polishing the semiconductor wafer polishing surface according to a first CMP process to remove at least a portion the copper layer to reveal a portion of an underlying barrier/adhesion layer; polishing the semiconductor wafer polishing surface according to a second CMP process including applying a neutralizing solution; polishing the semiconductor wafer polishing surface according to a third CMP process including applying a copper corrosion inhibitor solution; and, polishing the semiconductor wafer polishing surface according to at least a fourth CMP process to remove a remaining portion of the underlying barrier/adhesion layer.
    • 一种用于在化学机械抛光(CMP)期间防止或减少含铜半导体特征的腐蚀的方法,包括提供半导体晶片抛光表面,所述半导体晶片抛光表面包括覆盖铜填充的各向异性蚀刻特征的铜层; 根据第一CMP工艺抛光半导体晶片抛光表面以去除铜层的至少一部分以露出下面的阻挡/粘附层的一部分; 根据包括施加中和溶液的第二CMP工艺抛光半导体晶片抛光表面; 根据包括施加铜腐蚀抑制剂溶液的第三CMP工艺抛光半导体晶片抛光表面; 以及根据至少第四CMP工艺对所述半导体晶片抛光表面进行抛光以去除所述下面的阻挡/粘合层的剩余部分。