Magnetic barrier for plasma in chamber exhaust
    4.
    发明授权
    Magnetic barrier for plasma in chamber exhaust 失效
    室内排气等离子体的磁屏障

    公开(公告)号:US06863835B1

    公开(公告)日:2005-03-08

    申请号:US09557990

    申请日:2000-04-25

    摘要: A plasma chamber apparatus and method employing a magnet system to block the plasma within the chamber interior from reaching the exhaust pump. An exhaust channel between the chamber interior and the pump includes a magnet and at least one deflector that creates turbulence in the flow of exhaust gases. The magnetic field and the turbulence produced by the deflector both increase the rate of recombination of charged particles in the gases, thereby reducing the concentration of charged particles sufficiently to quench the plasma downstream of the magnet and deflector, thereby preventing the plasma body within the chamber from reaching the exhaust pump. The plasma confinement effect of the magnetic field permits the use of a wider and/or less sinuous exhaust channel than would be required to block the plasma without the magnetic field. Therefore, the pressure drop across the exhaust channel can be reduced in comparison with prior art designs that rely entirely on the sinuousness of the exhaust channel to block the plasma. Alternatively, if the magnetic field is strong enough, the magnetic field alone can block the plasma from reaching the exhaust pump without the need for any deflector in the exhaust channel.

    摘要翻译: 一种等离子体室装置和方法,其采用磁体系统阻挡室内的等离子体到达排气泵。 腔室内部和泵之间的排气通道包括一个磁体和至少一个在废气流中产生湍流的偏转器。 由偏转器产生的磁场和湍流都增加了气体中带电粒子的复合速率,从而充分降低了带电粒子的浓度,使得等离子体和导流板的下游猝灭,从而防止了等离子体在腔室内 从到达排气泵。 磁场的等离子体约束效应允许使用比没有磁场阻挡等离子体所需要的更宽和/或更少的弯曲的排气通道。 因此,与完全依赖于排气通道的弯曲度以阻挡等离子体的现有技术设计相比,可以减小排气通道两侧的压降。 或者,如果磁场足够强,则单独的磁场可以阻止等离子体到达排气泵,而不需要排气通道中的任何偏转器。

    Magnetic barrier for plasma in chamber exhaust
    5.
    发明授权
    Magnetic barrier for plasma in chamber exhaust 有权
    室内排气等离子体的磁屏障

    公开(公告)号:US06773544B2

    公开(公告)日:2004-08-10

    申请号:US09775173

    申请日:2001-01-31

    IPC分类号: H01L21302

    摘要: The invention concerns a plasma reactor employing a chamber enclosure including a process gas inlet and defining a plasma processing region. A workpiece support pedestal capable of supporting a workpiece at processing location faces the plasma processing region, the pedestal and enclosure being spaced from one another to define a pumping annulus therebetween having facing walls in order to permit the process of gas to be evacuated therethrough from the process region. A pair of opposing plasma confinement magnetic poles within one of the facing walls of the annulus, the opposing magnetic poles being axially displaced from one another. The magnetic poles are axially displaced below the processing location by a distance which exceeds a substantial fraction of a spacing between the facing walls of the annulus.

    摘要翻译: 本发明涉及一种使用包括工艺气体入口并限定等离子体处理区域的室外壳的等离子体反应器。 能够在加工位置处支撑工件的工件支撑基座面对等离子体处理区域,基座和外壳彼此间隔开,以在它们之间限定其间具有面向壁的泵送环形空间,以便允许气体从其中排出 过程区域。 一对相对的等离子体限制磁极在环形空间的相对的壁之一内,相对的磁极彼此轴向移位。 磁极在加工位置下方轴向移动一定距离,该距离超过环形面的相对壁之间的间隔的相当大的一部分。

    Chuck having pressurized zones of heat transfer gas
    8.
    发明授权
    Chuck having pressurized zones of heat transfer gas 有权
    夹头具有加热区的传热气体

    公开(公告)号:US06320736B1

    公开(公告)日:2001-11-20

    申请号:US09312909

    申请日:1999-05-17

    IPC分类号: H01H2300

    CPC分类号: H01L21/6831 C23C16/4586

    摘要: A chuck 28 for holding a substrate 4 comprises a surface 27 capable of receiving the substrate 4, the surface 27 having a gas inlet port 40 and a gas exhaust port 42. A non-sealing protrusion is between the gas inlet port 40 and the gas exhaust port 42. The non-sealing protrusion 44 impedes the flow of heat transfer gas between the gas inlet port 40 and the gas exhaust port 42 without blocking the flow of heat transfer gas. Preferably, a sealing protrusion 46 is provided around the periphery of the chuck 28 to form a substantially gas-tight seal with the substrate 4 to enclose and prevent leakage of heat transfer gas into a surrounding chamber 6.

    摘要翻译: 用于保持基板4的卡盘28包括能够接收基板4的表面27,表面27具有气体入口40和排气口42.非密封突起在气体入口40和气体 排气口42.非密封突起44阻止气体入口40和排气口42之间的传热气体的流动,而不阻碍传热气体的流动。 优选地,密封突起46设置在卡盘28的周边周围,以与基底4形成基本上气密的密封,以封闭并防止传热气体泄漏到周围室6中。