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    • 7. 发明申请
    • PLASMA PROCESSING METHOD
    • 等离子体处理方法
    • US20100029024A1
    • 2010-02-04
    • US12202692
    • 2008-09-02
    • Masatoshi MiyakeKenji MaedaKenetsu YokogawaMasaru Izawa
    • Masatoshi MiyakeKenji MaedaKenetsu YokogawaMasaru Izawa
    • H01L21/66H01L21/3065
    • H01L21/31138H01J37/321H01J37/32165H01J37/3244H01J37/32449H01L21/31116Y10S438/905
    • The invention provides a plasma processing method capable of reducing the damage applied to the low-k film or the underlayer. The method uses a plasma processing apparatus comprising gas supply means 41, 42 for respectively supplying processing gas independently to a center area of the processing chamber 1 and to an area near the sidewall thereof; a sample mounting electrode 13 for mounting a sample W to be processed; a high frequency power supply 21 for generating plasma; an antenna 11; and a plasma generating means 17 for generating plasma in the processing chamber; the method comprising etching an insulating film on the sample W using plasma; and supplying a large flow of inert gas from the center area of the chamber while having the sample W mounted on the sample mounting electrode 13, supplying deposit removal gas to only the area near the side wall of the processing chamber 1 and controlling the plasma density distribution to thereby vary the plasma density at the center area of the processing chamber and the plasma density at the area near the side wall of the processing chamber, so as to perform a deposited film removing process for removing the film deposited on the side wall of the processing chamber.
    • 本发明提供一种等离子体处理方法,其能够降低对低k膜或底层施加的损伤。 该方法使用包括气体供给装置41,42的等离子体处理装置,用于分别独立地向处理室1的中心区域供应处理气体,并且分配到其侧壁附近的区域; 用于安装待处理样品W的样品安装电极13; 用于产生等离子体的高频电源21; 天线11; 以及用于在处理室中产生等离子体的等离子体产生装置17; 该方法包括使用等离子体蚀刻样品W上的绝缘膜; 并且在将样品W安装在样品安装电极13上的同时,从室的中心区域供给大量惰性气体,仅将沉积物去除气体提供给处理室1的侧壁附近的区域,并控制等离子体密度 从而改变处理室的中心区域处的等离子体密度和处理室侧壁附近的区域的等离子体密度,从而进行沉积膜去除工艺,以去除沉积在侧壁上的膜 处理室。