PLASMA SUPPRESSION BEHIND A SHOWERHEAD THROUGH THE USE OF INCREASED PRESSURE

    公开(公告)号:US20170260627A1

    公开(公告)日:2017-09-14

    申请号:US15066550

    申请日:2016-03-10

    CPC classification number: C23C16/4408 C23C16/45536 C23C16/45565

    Abstract: A substrate processing system includes a showerhead including a stem portion and a head portion. The stem portion is in fluid communication with a process gas source, and the head portion is arranged to provide process gases from the process gas source to a reaction volume of a processing chamber below the showerhead to generate plasma in the reaction volume. A suppressor is arranged above the head portion of the showerhead, extends from the stem portion toward sidewalls of the processing chamber, and is sealed against the sidewalls of the processing chamber or sealed against an enclosure surrounding the suppressor. The suppressor, the sidewalls, and a top surface of the processing chamber, the suppressor and the enclosure, or the suppressor, the enclosure, and the top surface define a partitioned volume of the processing chamber above the showerhead. The partitioned volume is in fluid communication with a purge gas source.

    Plasma suppression behind a showerhead through the use of increased pressure

    公开(公告)号:US09758868B1

    公开(公告)日:2017-09-12

    申请号:US15066550

    申请日:2016-03-10

    CPC classification number: C23C16/4408 C23C16/45536 C23C16/45565

    Abstract: A substrate processing system includes a showerhead including a stem portion and a head portion. The stem portion is in fluid communication with a process gas source, and the head portion is arranged to provide process gases from the process gas source to a reaction volume of a processing chamber below the showerhead to generate plasma in the reaction volume. A suppressor is arranged above the head portion of the showerhead, extends from the stem portion toward sidewalls of the processing chamber, and is sealed against the sidewalls of the processing chamber or sealed against an enclosure surrounding the suppressor. The suppressor, the sidewalls, and a top surface of the processing chamber, the suppressor and the enclosure, or the suppressor, the enclosure, and the top surface define a partitioned volume of the processing chamber above the showerhead. The partitioned volume is in fluid communication with a purge gas source.

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