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    • 4. 发明申请
    • Ashing system
    • 灰化系统
    • US20080096392A1
    • 2008-04-24
    • US11905716
    • 2007-10-03
    • Toru Kakuda
    • Toru Kakuda
    • H01L21/302
    • H01L21/31138H01J37/321H01J37/3244H01J37/32449
    • An ashing system capable of restraining etching and damage of an oxide film or a nitride film on a semiconductor substrate and ashing a resist uniformly at a very high rate is to be provided. The ashing system includes a reaction tube, a coil and a high frequency power source for inducing and maintaining a high frequency gas discharge at inside of the reaction tube, and a chamber including a susceptor for holding a semiconductor substrate a and directly connected to the reaction tube, in which only oxygen gas is introduced into the reaction tube while exhausting inside of the reaction tube and inside of the chamber, and a pressure at inside of the reaction tube and inside of the chamber in ashing falls in a range equal to or higher than 250 Pa and equal to or lower than 650 Pa.
    • 可以提供能够抑制半导体衬底上的氧化膜或氮化物膜的蚀刻和损伤并以非常高的速率均匀地灰化抗蚀剂的灰化系统。 灰化系统包括用于在反应管内部诱导和保持高频气体放电的反应管,线圈和高频电源,以及包括用于保持半导体衬底a并直接连接到反应的基座的室 管,其中只有氧气被引入反应管中,同时排出反应管内部和室内,并且反应管内部和灰化内部的压力落在等于或更高的范围内 超过250Pa且等于或低于650Pa。