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    • 4. 发明申请
    • METHODS OF ETCHBACK PROFILE TUNING
    • 蚀刻轮廓调谐方法
    • US20160300731A1
    • 2016-10-13
    • US15091951
    • 2016-04-06
    • APPLIED MATERIALS, INC.
    • KAI WUVIKASH BANTHIA
    • H01L21/3213H01L21/3205H01L21/768
    • H01L21/32136H01L21/28556H01L21/76877
    • A method of controlling an etch profile includes introducing a tungsten containing gas into a processing chamber; depositing a first tungsten film lining sidewalls of a feature formed in a substrate using the tungsten containing gas in the processing chamber; and treating the first tungsten film in the processing chamber using the tungsten containing gas until a particular etch profile is attained by repeatedly alternating between etching the first tungsten film for a first interval and stopping the etching of the first tungsten film for a second interval by at least one of purging the tungsten containing gas from the process chamber or turning off a power supply that powers the etching of the first tungsten film.
    • 控制蚀刻轮廓的方法包括将含钨气体引入到处理室中; 在处理室中使用含钨气体沉积衬底中形成的特征的第一钨膜; 以及使用含钨气体处理处理室中的第一钨膜,直到通过在第一间隔刻蚀第一钨膜之间重复交替进行特定蚀刻轮廓,并且通过在第二间隔处停止第一钨膜的蚀刻而停止第二间隔的蚀刻 从处理室清除含钨气体的至少一个,或者关闭对第一钨膜的蚀刻提供动力的电源。