THREE-DIMENSIONAL SEMICONDUCTOR MEMORY DEVICES AND METHODS OF FABRICATING THE SAME

    公开(公告)号:US20200075627A1

    公开(公告)日:2020-03-05

    申请号:US16294425

    申请日:2019-03-06

    Abstract: Integrated circuit devices and methods of forming the same are provided. The devices may include a substrate including a cell region and an extension region and conductive layers stacked on the cell region in a vertical direction. The conductive layers may extend onto the extension region and may have a stair-step structure on the extension region. The devices may also include vertical structures on the substrate. Each of the vertical structures may extend in the vertical direction, and the vertical structures may include a first vertical structure on the cell region and a second vertical structure on the extension region. The first vertical structure may extend through the conductive layers and may include a first channel layer, the second vertical structure may be in the stair-step structure and may include a second channel layer, and the second channel layer may be spaced apart from the substrate in the vertical direction.

    SEMICONDUCTOR MEMORY DEVICES AND METHODS OF FABRICATING THE SAME

    公开(公告)号:US20210257370A1

    公开(公告)日:2021-08-19

    申请号:US17036462

    申请日:2020-09-29

    Inventor: YONG-HOON SON

    Abstract: Semiconductor memory devices and methods of forming the same are provided. The semiconductor devices may include a vertical insulating structure extending in a first direction on a substrate, a semiconductor pattern extending along a sidewall of the vertical insulating structure, a bitline on a first side of the semiconductor pattern, an information storage element on a second side of the semiconductor pattern and including first and second electrodes, and a gate electrode on the semiconductor pattern and extending in a second direction that is different from the first direction. The bitline may extend in the first direction and may be electrically connected to the semiconductor pattern. The first electrode may have a cylindrical shape that extends in the first direction, and the second electrode may extend along a sidewall of the first electrode.

    SEMICONDUCTOR MEMORY DEVICES AND METHODS OF FABRICATING THE SAME

    公开(公告)号:US20210104527A1

    公开(公告)日:2021-04-08

    申请号:US17035843

    申请日:2020-09-29

    Inventor: YONG-HOON SON

    Abstract: Disclosed are semiconductor memory devices and methods of fabricating the same. The semiconductor memory devices may include a plurality of layers sequentially stacked on a substrate in a vertical direction, each of the plurality of layers including a bit line extending in a first direction and a semiconductor pattern extending from the bit line in a second direction traversing the first direction, a gate electrode extending through the plurality of layers and including a vertical portion extending through the semiconductor patterns and a first horizontal portion extending from the vertical portion and facing a first surface of one of the semiconductor patterns, and a data storing element electrically connected to the one of the semiconductor patterns. The data storing element includes a first electrode electrically connected to the one of the semiconductor patterns, a second electrode on the first electrode, and a dielectric layer between the first and second electrodes.

    SEMICONDUCTOR MEMORY DEVICES AND METHODS OF FABRICATING THE SAME

    公开(公告)号:US20220285356A1

    公开(公告)日:2022-09-08

    申请号:US17752921

    申请日:2022-05-25

    Inventor: YONG-HOON SON

    Abstract: Disclosed are semiconductor memory devices and methods of fabricating the same. The semiconductor memory devices may include a plurality of layers sequentially stacked on a substrate in a vertical direction, each of the plurality of layers including a bit line extending in a first direction and a semiconductor pattern extending from the bit line in a second direction traversing the first direction, a gate electrode extending through the plurality of layers and including a vertical portion extending through the semiconductor patterns and a first horizontal portion extending from the vertical portion and facing a first surface of one of the semiconductor patterns, and a data storing element electrically connected to the one of the semiconductor patterns. The data storing element includes a first electrode electrically connected to the one of the semiconductor patterns, a second electrode on the first electrode, and a dielectric layer between the first and second electrodes.

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