ALD CYCLE TIME REDUCTION USING PROCESS CHAMBER LID WITH TUNABLE PUMPING

    公开(公告)号:US20210087686A1

    公开(公告)日:2021-03-25

    申请号:US17028184

    申请日:2020-09-22

    Abstract: Process chamber lids having a pumping liner with a showerhead and gas funnel within an open central region are described. The showerhead is spaced a distance from the gas funnel to form a gap and the gas funnel has an opening to provide a flow of gas into the gap. The gas funnel includes a plurality of apertures extending from the front surface to a common region adjacent the back surface of the gas funnel. A purge ring is in contact with the back surface of the gas funnel and aligned so that a circular channel formed in the bottom surface of the purge ring body is positioned adjacent the common area of the apertures in the gas funnel.

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