Showerhead for providing multiple materials to a process chamber

    公开(公告)号:US11970775B2

    公开(公告)日:2024-04-30

    申请号:US16533357

    申请日:2019-08-06

    CPC classification number: C23C16/45548 B05B1/185 B05B1/20

    Abstract: Embodiments of a showerhead are described herein. In some embodiments, a showerhead assembly includes: a first gas delivery portion having a first body, a first inlet, and a plurality of first tubes extending from the first body and defining a first plenum, wherein each tube of the plurality of first tubes includes a plurality of first holes; and a second gas delivery portion having a second body, a second inlet, and a plurality of second tubes extending from the second body and defining a second plenum fluidly independent from the first plenum, wherein each tube of the plurality of second tubes includes a plurality of second holes, and wherein the plurality of first tubes are disposed in an alternating pattern with the plurality of second tubes across a width of the showerhead assembly and a heat sink disposed between the plurality of first tubes and the plurality of second tubes.

    Plasma density control on substrate edge

    公开(公告)号:US11495440B2

    公开(公告)日:2022-11-08

    申请号:US16996004

    申请日:2020-08-18

    Abstract: Embodiments of the present disclosure generally relate to apparatuses for reducing particle contamination on substrates in a plasma processing chamber. In one or more embodiments, an edge ring is provided and includes a top surface, a bottom surface opposite the top surface and extending radially outward, an outer vertical wall extending between and connected to the top surface and the bottom surface, an inner vertical wall opposite the outer vertical wall, an inner lip extending radially inward from the inner vertical wall, and an inner step disposed between and connected to the inner wall and the bottom surface. During processing, the edge ring shifts the high plasma density zone away from the edge area of the substrate to avoid depositing particles on the substrate when the plasma is de-energized.

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