RF measurement feedback control and diagnostics for a plasma immersion ion implantation reactor
    91.
    发明授权
    RF measurement feedback control and diagnostics for a plasma immersion ion implantation reactor 有权
    RF测量反馈控制和等离子体浸入式离子注入反应器的诊断

    公开(公告)号:US07666464B2

    公开(公告)日:2010-02-23

    申请号:US10971772

    申请日:2004-10-23

    摘要: A method of measuring ion dose in a plasma immersion ion implantation reactor during ion implantation of a selected species into a workpiece includes placing the workpiece on a pedestal in the reactor and feeding into the reactor a process gas comprising a species to be implanted into the workpiece, and then coupling RF plasma source power to a plasma in the reactor. It further includes coupling RF bias power to the workpiece by an RF bias power generator that is coupled to the workpiece through a bias feedpoint of the reactor and measuring RF current at the feedpoint to generate a current-related value, and then integrating the current-related over time to produce an ion implantation dose-related value.

    摘要翻译: 在将所选择的物质离子注入工件期间测量等离子体浸入式离子注入反应器中的离子剂量的方法包括将工件放置在反应器中的基座上,并将反应器中的工件气体进料到反应器中, ,然后将RF等离子体源功率耦合到反应器中的等离子体。 它还包括通过RF偏置功率发生器将RF偏置功率耦合到工件,该RF偏置功率发生器通过电抗器的偏置馈电点耦合到工件,并且在馈电点处测量RF电流以产生电流相关值, 随着时间的推移产生离子注入剂量相关值。

    O-ringless tandem throttle valve for a plasma reactor chamber
    92.
    发明授权
    O-ringless tandem throttle valve for a plasma reactor chamber 失效
    用于等离子体反应室的O型无环式串联节流阀

    公开(公告)号:US07428915B2

    公开(公告)日:2008-09-30

    申请号:US11115956

    申请日:2005-04-26

    IPC分类号: F16K11/052

    摘要: A valve system having high maximum gas flow rate and fine control of gas flow rate, includes a valve housing for blocking gas flow through a gas flow path, a large area opening through said housing having a first arcuate side wall and a small area opening through said housing having a second arcuate side wall, and respective large area and small area rotatable valve flaps in said large area and small area openings, respectively, and having arcuate edges congruent with said first and second arcuate side walls, respectively and defining therebetween respective first and second valve gaps. The first and second valve gaps are sufficiently small to block flow of a gas on one side of said valve housing up to a predetermined pressure limit, thereby obviating any need for O-rings.

    摘要翻译: 具有高的最大气体流量和气体流量的精细控制的阀门系统包括用于阻止气体流过气体流路的阀壳体,通过所述壳体的大面积开口具有第一弧形侧壁和小区域开口 所述壳体分别具有第二弧形侧壁和分别在所述大面积和小面积开口中的相应的大面积和小面积的可旋转阀瓣,并且分别具有与所述第一和第二弧形侧壁一致的弓形边缘,并且在其间限定各自的第一 和第二阀间隙。 第一和第二阀间隙足够小以阻止气体在所述阀壳体的一侧上的流动直到预定的压力极限,从而避免了对O形环的任何需要。