Memory device and method of forming the same

    公开(公告)号:US12137569B2

    公开(公告)日:2024-11-05

    申请号:US18162642

    申请日:2023-01-31

    Abstract: A memory device includes a multi-layer stack, a plurality of channel layers and a plurality of ferroelectric layers. The multi-layer stack is disposed on a substrate and includes a plurality of gate layers and a plurality of dielectric layers stacked alternately. The plurality of channel layers penetrate through the multi-layer stack and are laterally spaced apart from each other, wherein the plurality of channel layers include a first channel layer and a second channel layer, and a first electron mobility of the first channel layer is different from a second electron mobility of the second channel layer. Each of the plurality of channel layers are spaced apart from the multi-layer stack by one of the plurality of ferroelectric layers, respectively.

    SEMICONDUCTOR MEMORY DEVICE
    74.
    发明公开

    公开(公告)号:US20240357810A1

    公开(公告)日:2024-10-24

    申请号:US18757708

    申请日:2024-06-28

    CPC classification number: H10B43/20 H10B43/10

    Abstract: A semiconductor memory device having improved electrical characteristics is provided. The semiconductor memory device comprises a first semiconductor pattern separated from a substrate in a first direction, a first gate structure extending in the first direction and penetrating the first semiconductor pattern, a first conductive connecting line connected to the first semiconductor pattern and extending in a second direction different from the first direction, and a second conductive connecting line connected to the first semiconductor pattern. The first gate structure is between the first conductive connecting line and the second conductive connecting line, the first gate structure includes a first gate electrode and a first gate insulating film, and the first gate insulating film includes a first charge holding film contacting with the first semiconductor pattern.

    Semiconductor storage device with pillar

    公开(公告)号:US12108598B2

    公开(公告)日:2024-10-01

    申请号:US17190739

    申请日:2021-03-03

    Inventor: Kazuharu Yamabe

    Abstract: A semiconductor storage device includes a substrate, a plurality of first conductive layers arranged in a first direction intersecting with a surface of the substrate, a first semiconductor layer that extends in the first direction and faces the plurality of first conductive layers, a first gate insulating film that extends in the first direction and covers an outer peripheral surface of the first semiconductor layer, a first insulating layer that extends in the first direction and has an outer peripheral surface covered with the first semiconductor layer, and a second conductive layer that is farther from the substrate than the plurality of first conductive layers and is connected to one end in the first direction of the first semiconductor layer. The first semiconductor layer includes a first region facing the plurality of first conductive layers and a second region farther from the substrate than the first region. The second conductive layer is connected to an inner peripheral surface and an outer peripheral surface of the second region of the first semiconductor layer and is in contact with one end in the first direction of the first insulating layer.

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