ETCHING METHOD
    2.
    发明申请

    公开(公告)号:US20210351040A1

    公开(公告)日:2021-11-11

    申请号:US17277681

    申请日:2019-09-25

    Abstract: The etching method includes a modification process and a removal process. In the modification process, a fluorine containing gas is supplied to an object having a silicon oxide film, so that a modification layer is formed on the surface of the silicon oxide film. In the removal process, the object, on which the modification layer has been formed, is exposed to plasma of a gas that contains ammonia, so that the modification layer is removed from the object. In addition, the modification process and the removal process are alternately repeated a plurality of times.

    PLASMA PROCESSING DEVICE, AND PLASMA PROCESSING METHOD

    公开(公告)号:US20240331977A1

    公开(公告)日:2024-10-03

    申请号:US18671410

    申请日:2024-05-22

    Abstract: A dividing plate has insulating properties, and divides the inside of a processing vessel into a reaction chamber in which a body to be processed is placed, and a plasma generating chamber for generating plasma. Further, the dividing plate is provided, on a surface thereof on the side of the plasma generating chamber, with a first electrode, and a plurality of through holes for supplying active species included in the plasma generated in the plasma generating chamber to the reaction chamber. The second electrode is disposed facing the first electrode in the plasma generating chamber. When plasma is to be generated in the plasma generating chamber, an electric power supply unit supplies either the first electrode or the second electrode with high-frequency electric power in which high-frequency electric power in a plurality of frequencies is superimposed by phase control.

    FILM FORMING APPARATUS
    7.
    发明申请

    公开(公告)号:US20190385815A1

    公开(公告)日:2019-12-19

    申请号:US16431565

    申请日:2019-06-04

    Abstract: A film forming apparatus includes a vacuum-evacuable processing chamber, a lower electrode for mounting thereon a target substrate, an upper electrode disposed to face the lower electrode, a gas supply unit, a voltage application unit and a switching unit. The gas supply unit supplies a film forming source gas to be formed into plasma to a processing space between the upper and the lower electrode. The voltage application unit applies to the upper electrode a voltage outputted from at least one of a high frequency power supply and a DC power supply included therein. The switching unit selectively switches the voltage to be applied to the upper electrode among a high frequency voltage outputted from the high frequency power supply, a DC voltage outputted from the DC power supply, and a superimposed voltage in which the DC voltage is superimposed with the high frequency voltage.

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