Hybrid matcher and radio frequency matching system including the hybrid matcher

    公开(公告)号:US12288674B2

    公开(公告)日:2025-04-29

    申请号:US17859316

    申请日:2022-07-07

    Abstract: Provided are a hybrid matcher capable of precisely performing impedance matching at a high speed when RF power is applied with a multi-level pulse in a facility using RF plasma, and an RF matching system including the hybrid matcher. The hybrid matcher includes a matching circuit in which a plurality of variable element-switch sets are connected to each other in parallel, the variable element-switch sets each including a variable impedance element and a switch connected to the variable impedance element in series and electrically operating therewith, a sensor disposed at a front stage of the matching circuit and configured to measure a current and a voltage of radio frequency (RF) power applied from an RF generator, a variable element driver configured to drive the variable impedance element, a switch driver configured to drive the switch, and a controller configured to control the variable element driver and the switch driver.

    PLASMA ETCHING APPARATUS AND OPERATING METHOD THEREOF

    公开(公告)号:US20240128056A1

    公开(公告)日:2024-04-18

    申请号:US18133277

    申请日:2023-04-11

    Abstract: The present disclosure provides plasma etching apparatuses and operating methods of the plasma etching apparatuses. In some embodiments, a plasma etching apparatus includes a processing chamber, a plasma source generator, a bias generator, and an acoustic wave generator. The processing chamber is configured to receive etching gas, and to etch a wafer using plasma that has been formed according to a plasma source pulse and a bias pulse. The a plasma source generator is configured to generate the plasma source pulse. The bias generator is configured to generate the bias pulse. The acoustic wave generator is configured to generate an acoustic wave having a wavefront with a first direction parallel to the wafer and to control a density of a reactive gas of the plasma.

    Upper electrode and substrate processing apparatus including the same

    公开(公告)号:US11545344B2

    公开(公告)日:2023-01-03

    申请号:US17188064

    申请日:2021-03-01

    Abstract: An upper electrode used for a substrate processing apparatus using plasma is provided. The upper electrode includes a bottom surface including a center region and an edge region having a ring shape and surrounding the center region, a first protrusion portion protruding toward plasma from the edge region and having a ring shape, wherein the first protrusion portion includes a first apex corresponding to a radial local maximum point toward the plasma, and a first distance, which is a radial-direction distance between the first apex and a center axis of the upper electrode, is greater than a radius of a substrate.

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