Semiconductor device and manufacturing method thereof

    公开(公告)号:US11411108B2

    公开(公告)日:2022-08-09

    申请号:US17078856

    申请日:2020-10-23

    Abstract: A semiconductor device includes a gate stack over a semiconductor substrate. A spacer extends along a first sidewall of the gate stack. An epitaxy structure is in the semiconductor substrate. A liner wraps around the epitaxy structure and has an outer surface in contact with the semiconductor substrate and an inner surface facing the epitaxy structure. The outer surface of the liner has a first facet extending upwards and towards the gate stack from a bottom of the first liner and a second facet extending upwards and towards an outer sidewall of the spacer from a top of the first facet to a top of the liner, such that a corner is formed between the first facet and the second facet, and the inner surface of the first liner defines a first curved corner pointing towards the corner formed between the first facet and the second facet.

    System and method for operating the same

    公开(公告)号:US12198953B2

    公开(公告)日:2025-01-14

    申请号:US18338981

    申请日:2023-06-21

    Abstract: A system includes a cooler, a concentration meter, a first pump and a second pump. The cooler is configured to cool first liquid by second liquid in the cooler. The concentration meter is configured to measure a concentration of the first liquid. The first pump is configured to move the first liquid according to the concentration. The second pump is coupled to the cooler, disposed with the first pump in a parallel manner, and configured to move the second liquid.

    Ion implanter toxic gas delivery system

    公开(公告)号:US11527380B2

    公开(公告)日:2022-12-13

    申请号:US16837724

    申请日:2020-04-01

    Abstract: An ion implantation system including an ion implanter, a dopant source gas supply system and a monitoring system is provided. The ion implanter is inside a housing and includes an ion source unit. The dopant source gas supply system includes a first and a second dopant source gas storage cylinder in a gas cabinet outside of the housing and configured to supply a dopant source gas to the ion source unit, and a first and a second dopant source gas supply pipe coupled to respective first and second dopant source gas storage cylinders. Each of the first and second dopant source gas supply pipes includes an inner pipe and an outer pipe enclosing the inner pipe. The monitoring system is coupled to the outer pipe of each of the first and the second dopant source gas supply pipes.

    Systems and methods for shuttered wafer cleaning

    公开(公告)号:US11355366B2

    公开(公告)日:2022-06-07

    申请号:US16551352

    申请日:2019-08-26

    Abstract: In an embodiment, a system includes: a wafer support configured to secure a wafer; a nozzle configured to dispense a liquid or a gas on the wafer when the nozzle is in an active state of dispensing; a shutter configured to catch the liquid from the nozzle when the shutter is in a first position below the nozzle; and a shutter actuator configured to: move the shutter to the first position in response to the nozzle not being in an inactive state; move the shutter to a second position away from the first position in response to the nozzle being in the active state.

    Automated wafer cleaning
    20.
    发明授权

    公开(公告)号:US11342202B2

    公开(公告)日:2022-05-24

    申请号:US16539315

    申请日:2019-08-13

    Abstract: In an embodiment, a method includes: spinning a wafer around an axis of rotation at a center of the wafer; applying a first stream of liquid along a line starting from an initial point on the wafer adjacent to the center of the wafer, through the center of the wafer, and ending at an edge of the wafer; applying a second stream of liquid to an inner third of the line starting at the initial point and ending at a boundary point; applying a third stream of liquid to a middle third of the line starting at the boundary point; applying a fourth stream of liquid to an outer third of the line ending at the edge of the wafer; applying a fifth stream of liquid along the line starting from the initial point and ending at the edge of the wafer; and applying a stream of gas along the line starting from the initial point and ending at the edge of the wafer.

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