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    • 90. 发明申请
    • Plasma processor with electrode responsive to multiple RF frequencies
    • 等离子体处理器,电极响应多个RF频率
    • US20050264218A1
    • 2005-12-01
    • US10855706
    • 2004-05-28
    • Rajinder DhindsaFelix KozakevichDave Trussell
    • Rajinder DhindsaFelix KozakevichDave Trussell
    • H01J37/32H01J7/24
    • H01J37/32174H01J37/32082H01J37/32165H01J37/3299
    • A plasma processor processing a workpiece includes sources having frequencies 2 MHz, 27 MHz, and 60 MHz, applied by three matching networks to an electrode in a vacuum chamber including the workpiece. Alternatively 60 MHz is applied to a second electrode by a fourth matching network. The matching networks, substantially tuned to the frequencies of the sources driving them, include series inductances so the 2 MHz inductance exceeds the 27 MHz network inductance, and the 27 MHz network inductance exceeds the inductances of the 60 MHz networks. The matching networks attenuate by at least 26 DB the frequencies of the sources that do not drive them. Shunt inductors between the 27 and 60 MHz sources decouple 2 MHz from the 27 and 60 MHz sources. A series resonant circuit (resonant to about 5 MHz) shunts the 2 MHz network and the electrode to help match the 2 MHz source to the electrode.
    • 处理工件的等离子体处理器包括频率为2MHz,27MHz和60MHz的源,由三个匹配网络施加到包括工件的真空室中的电极。 或者通过第四匹配网络将60MHz施加到第二电极。 基本上调谐到驱动它们的源的频率的匹配网络包括串联电感,因此2MHz电感超过27MHz网络电感,并且27MHz网络电感超过60MHz网络的电感。 匹配网络衰减至少26 DB的驱动它们的源的频率。 27和60 MHz信号源之间的并联电感将2 MHz与27 MHz和60 MHz信号源分离。 串联谐振电路(谐振到约5 MHz)分流2 MHz网络和电极,以帮助将2 MHz源极与电极相匹配。