Plasma processing apparatus
    21.
    发明授权

    公开(公告)号:US12009180B2

    公开(公告)日:2024-06-11

    申请号:US17435509

    申请日:2020-08-27

    Abstract: A plasma processing apparatus includes: a processing chamber; a first radio frequency power supply configured to supply a first radio frequency power; a second radio frequency power supply configured to supply a second radio frequency power; and a control device configured to, when the first radio frequency power is modulated by a first waveform having a first period and a second period adjacent to the first period, and the second radio frequency power supply is modulated by a second waveform having a period A and a period B, control the second radio frequency power supply such that each second radio frequency power in the period A is supplied in the first period and the second period, in which an amplitude in the second period is smaller than an amplitude in the first period, and an amplitude in the period A is larger than an amplitude in the period B.

    PLASMA PROCESSING APPARATUS, PLASMA PROCESSING METHOD, AND DIELECTRIC WINDOW

    公开(公告)号:US20230326716A1

    公开(公告)日:2023-10-12

    申请号:US18042513

    申请日:2021-08-16

    Abstract: A plasma processing apparatus includes a chamber having a processing space for performing plasma processing on a substrate and a synthesis space for synthesizing electromagnetic waves, a dielectric window configured to partition the processing space and the synthesis space, an antenna unit having a plurality of antennas that radiate the electromagnetic waves into the synthesis space and functioning as a phased array antenna, an electromagnetic wave output part configured to output the electromagnetic waves to the antenna unit, and a controller configured to cause the antenna unit to function as the phased array antenna. The dielectric window has a plurality of recesses on a surface thereof facing the processing space.

    Plasma processing apparatus
    29.
    发明授权

    公开(公告)号:US09991097B2

    公开(公告)日:2018-06-05

    申请号:US15793856

    申请日:2017-10-25

    Abstract: A plasma processing apparatus includes a chamber; a mounting table configured to mount thereon a target object in the chamber; a plasma source configured to introduce microwaves into the chamber through a ceiling wall of the chamber and generate a surface wave plasma in the chamber; a first gas introduction unit configured to introduce a first gas into the chamber from the ceiling wall; and a second gas introduction unit configured to introduce a second gas into the chamber from a predetermined height position between the ceiling wall and the mounting table. The second gas introduction unit has a plurality of nozzles extending from the ceiling wall toward the mounting table and arranged on a same circumference at a regular interval. Each of the nozzles discharges the second gas toward a nozzle adjacent thereto.

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