NORMAL-INCIDENCE IN-SITU PROCESS MONITOR SENSOR

    公开(公告)号:US20240222100A1

    公开(公告)日:2024-07-04

    申请号:US18605526

    申请日:2024-03-14

    Abstract: An apparatus for in-situ etching monitoring in a plasma processing chamber includes a continuous wave broadband light source, an illumination system configured to illuminate an area on a substrate with an incident light beam being directed from the continuous wave broadband light source at normal incidence to the substrate, a collection system configured to collect a reflected light beam being reflected from the illuminated area on the substrate, and to direct the reflected light beam to a first light detector, and a controller. The controller is configured to determine a property of the substrate or structures formed thereupon based on a reference light beam and the reflected light beam, and control an etch process based on the determined property. The reference light beam is generated by the illumination system by splitting a portion of the incident light beam and directed to a second light detector.

    SYSTEMS AND METHODS FOR SEMICONDUCTOR ETCHING

    公开(公告)号:US20240395557A1

    公开(公告)日:2024-11-28

    申请号:US18322502

    申请日:2023-05-23

    Abstract: A method is provided. The method includes etching a substrate to form a recess in the substrate through a plurality of stages. A first one of the plurality of stages forms an inhibitor layer lining an initial portion of the recess based on first etchant radicals. A second one of the plurality of stages exposes the initial portion of the recess based on ions. A third one of the plurality of stages extends the initial portion of the recess based on second etchant radicals.

Patent Agency Ranking