PLASMA ELECTRODE AND PLASMA PROCESSING DEVICE

    公开(公告)号:US20190108984A1

    公开(公告)日:2019-04-11

    申请号:US16087249

    申请日:2017-03-07

    Abstract: A plasma electrode is provided with an electrode plate, a ground plate, and an insulating plate arranged between the electrode plate and the ground plate. Protrusions of the electrode plate are arranged inside through holes of the ground plate and inside through holes of the insulating plate. One of the through hole provided on the center axes of the protrusions and the through hole provided around the through hole discharges a first processing gas to below the ground plate. The other of the through holes exhausts a gas existing below the ground plate. A second flow path around the protrusions supplies a second processing gas supplied via a first flow path to a gap between outer walls of the protrusions and inner walls of the through holes. The second processing gas supplied to the gap is converted into plasma by high frequency power applied to the electrode plate.

    ETCHING METHOD, PLASMA PROCESSING APPARATUS, AND PROCESSING SYSTEM

    公开(公告)号:US20200243298A1

    公开(公告)日:2020-07-30

    申请号:US16775960

    申请日:2020-01-29

    Abstract: An etching method includes: providing a substrate having a film and a patterned mask on the film; forming a silicon-containing layer including silicon, carbon, and nitrogen on the substrate using a precursor gas containing silicon; and performing a plasma etching on the film. The substrate is placed under a depressurized environment for a time period from a start time point of the step of forming the silicon-containing layer on the substrate to an end time point of the step of performing the plasma etching on the film.

    ETCHING METHOD AND PLASMA PROCESSING APPARATUS

    公开(公告)号:US20250096006A1

    公开(公告)日:2025-03-20

    申请号:US18964049

    申请日:2024-11-29

    Abstract: A disclosed etching method includes (a) preparing a substrate in a chamber, (b) forming a deposit on the substrate, (c) supplying ions from a plasma generated from the process gas to the deposit to modify the deposit, and (d) etching the dielectric film by using a plasma after (c). The substrate includes a dielectric film and a mask. The deposit is supplied from a plasma generated from a process gas containing a gas component containing fluorine and carbon. A power level of a source radio frequency power in (c) is not higher than a power level of the source radio frequency power in (b). An electric bias has a level in (c) higher than a level of the electric bias in (b), or is not supplied in (b). A level of the electric bias in (d) is higher than the level of the electric bias in (c).

    SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUS

    公开(公告)号:US20210202262A1

    公开(公告)日:2021-07-01

    申请号:US17133974

    申请日:2020-12-24

    Abstract: A substrate processing method includes a providing step, a forming step, and an etching step. In the providing step, a substrate including an etching target film, a first mask formed on the etching target film, and a second mask formed to cover at least a part of the first mask is provided. In the forming step, a protective film is formed on a side wall of the second mask by plasma generated from a first gas. In the etching step, the etching target film is etched with plasma generated from a second gas.

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