SEMICONDUCTOR DEVICE INCLUDING PLURALITY OF CHANNEL LAYERS

    公开(公告)号:US20230120496A1

    公开(公告)日:2023-04-20

    申请号:US18046656

    申请日:2022-10-14

    Abstract: A semiconductor device includes a substrate, an active fin on the substrate, and a transistor on the active fin. The transistor includes a lower channel layer, an intermediate channel layer, and an upper channel layer sequentially stacked, and a gate structure traversing the active fin, respectively surrounding the channel layers, and including a gate dielectric and a gate electrode. The gate electrode includes a lower electrode portion between the active fin and the lower channel layer, an intermediate electrode portion between the lower channel layer and the intermediate channel layer, and an upper electrode portion between the intermediate channel layer and the upper channel layer. The gate electrode includes a work function adjusting metal element, and a content of the work function adjusting metal element in the lower electrode portion is different from that in each of the intermediate electrode portion and the upper electrode portion.

    SEMICONDUCTOR DEVICES
    13.
    发明申请

    公开(公告)号:US20200381555A1

    公开(公告)日:2020-12-03

    申请号:US16815744

    申请日:2020-03-11

    Abstract: Semiconductor devices are provided. A semiconductor device includes a fin structure having a plurality of first semiconductor patterns and a plurality of second semiconductor patterns alternately stacked on a substrate, and extending in a first direction. The semiconductor device includes a semiconductor cap layer on an upper surface of the fin structure, and extending along opposite side surfaces of the fin structure in a second direction crossing the first direction. The semiconductor device includes a gate electrode on the semiconductor cap layer, and extending in the second direction. The semiconductor device includes a gate insulating film between the semiconductor cap layer and the gate electrode. Moreover, the semiconductor device includes a source/drain region connected to the fin structure. The plurality of first semiconductor patterns include silicon germanium (SiGe) having a germanium (Ge) content in a range of 25% to 35%, and the plurality of second semiconductor patterns include silicon (Si).

    Integrated circuit device
    17.
    发明授权

    公开(公告)号:US11888039B2

    公开(公告)日:2024-01-30

    申请号:US17352973

    申请日:2021-06-21

    Abstract: An integrated circuit device includes a fin-type active region disposed on a substrate and extending in a first horizontal direction, a gate line disposed on the fin-type active region and extending in a second horizontal direction intersecting the first horizontal direction, the gate line including, a connection protrusion portion including a protrusion top surface at a first vertical level from the substrate, and a main gate portion including a recess top surface extending in the second horizontal direction from the connection protrusion portion, the recess top surface being at a second vertical level lower than the first vertical level, a gate contact disposed on the gate line and connected to the connection protrusion portion, a source/drain region disposed on the fin-type active region and disposed adjacent to the gate line, and a source/drain contact disposed on the source/drain region.

    Integrated circuit device
    18.
    发明授权

    公开(公告)号:US11631674B2

    公开(公告)日:2023-04-18

    申请号:US17231114

    申请日:2021-04-15

    Abstract: An integrated circuit device includes a fin-type active area along a first horizontal direction on a substrate, a device isolation layer on opposite sidewalls of the fin-type active area, a gate structure along a second horizontal direction crossing the first horizontal direction, the gate structure being on the fin-type active area and on the device isolation layer, and a source/drain area on the fin-type active area, the source/drain area being adjacent to the gate structure, and including an outer blocking layer, an inner blocking layer, and a main body layer sequentially stacked on the fin-type active area, and each of the outer blocking layer and the main body layer including a Si1-xGex layer, where x≠0, and the inner blocking layer including a Si layer.

    Semiconductor devices
    19.
    发明授权

    公开(公告)号:US11282928B2

    公开(公告)日:2022-03-22

    申请号:US15931964

    申请日:2020-05-14

    Abstract: A semiconductor device including an active structure on a substrate, the active structure including silicon germanium patterns and silicon patterns alternately and repeatedly stacked in a vertical direction perpendicular to an upper surface of the substrate; a semiconductor layer on sidewalls of the active structure that face in a first direction parallel to the upper surface of the substrate, the semiconductor layer being a source/drain region; and a gate structure on a surface of the active structure and the substrate, the gate structure extending in a second direction that is perpendicular to the first direction, wherein the silicon germanium patterns are silicon rich-silicon germanium.

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