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    • 1. 发明申请
    • RPSC AND RF FEEDTHROUGH
    • RPSC和RF FEEDTHROUGH
    • US20090151636A1
    • 2009-06-18
    • US12271613
    • 2008-11-14
    • John M. WhiteBradley O. StimsonJozef Kudela
    • John M. WhiteBradley O. StimsonJozef Kudela
    • C23C16/513C23C16/511
    • H01J37/32697H01J37/32091H01J37/32192H01J37/32357H01J37/32862
    • The present invention generally comprises an apparatus having an RF choke and a remote plasma source combined into a single unit. Process gases may be introduced to the chamber via the showerhead assembly which may be driven as an RF electrode. The gas feed tube may provide process gases and the cleaning gases to the process chamber. The inside of the gas feed tube may remain at a zero RF field to avoid premature gas breakdown within the gas feed tube that may lead to parasitic plasma formation between the gas source and the showerhead during processing. Igniting the cleaning gas plasma within the gas feed tube permits the plasma to be ignited closer to the processing chamber. Thus, RF current travels along the outside of the apparatus during deposition and microwave current ignites a plasma within the apparatus before feeding the plasma to the processing chamber.
    • 本发明通常包括具有组合成单个单元的RF扼流圈和远程等离子体源的装置。 工艺气体可以经由可被作为RF电极驱动的喷头组件引入室。 气体供给管可以将处理气体和清洁气体提供给处理室。 气体供给管的内部可以保持在零RF场,以避免气体进料管内的过早气体击穿,这可能在处理期间导致气体源和喷头之间的寄生等离子体形成。 点燃气体供给管内的清洁气体等离子体允许等离子体更靠近处理室被点燃。 因此,RF电流在沉积期间沿着设备的外部行进,并且在将等离子体馈送到处理室之前,微波电流点燃设备内的等离子体。
    • 5. 发明申请
    • Asymmetrical RF Drive for Electrode of Plasma Chamber
    • 等离子室电极的非对称RF驱动
    • US20090159423A1
    • 2009-06-25
    • US12343519
    • 2008-12-24
    • Jozef KudelaCarl A. SorensenSoo Young ChoiJohn M. White
    • Jozef KudelaCarl A. SorensenSoo Young ChoiJohn M. White
    • H05H1/00H01L21/3065B23H7/14
    • H01L21/02B44C1/227C23C16/513H01J37/32091H01J37/32577H01L21/02104
    • RF power is coupled to one or more RF drive points (50-56) on an electrode (20-28) of a plasma chamber such that the level of RF power coupled to the RF drive points (51-52, 55-56) on the half (61) of the electrode that is closer to the workpiece passageway (12) exceeds the level of RF power coupled to the RF drive points (53-54), if any, on the other half (62) of the electrode. Alternatively, RF power is coupled to one or more RF drive points on an electrode of a plasma chamber such that the weighted mean of the drive point positions is between the center (60) of the electrode and the workpiece passageway. The weighted mean is based on weighting each drive point position by the time-averaged level of RF power coupled to that drive point position. The invention offsets an increase in plasma density that otherwise would exist adjacent the end of the electrode closest to the passageway.
    • RF功率耦合到等离子体室的电极(20-28)上的一个或多个RF驱动点(50-56),使得耦合到RF驱动点(51-52,55-56)的RF功率的电平 更靠近工件通道(12)的电极的一半(61)超过了电极的另一半(62)上耦合到RF驱动点(53-54)的RF功率的水平(如果有的话) 。 或者,RF功率耦合到等离子体室的电极上的一个或多个RF驱动点,使得驱动点位置的加权平均值在电极的中心(60)和工件通道之间。 加权平均值基于通过耦合到该驱动点位置的RF功率的时间平均水平来加权每个驱动点位置。 本发明抵消等离子体密度的增加,否则其将邻近电极最靠近通道的端部存在。