Nonvolatile memory device and method for fabricating the same

    公开(公告)号:US11031410B2

    公开(公告)日:2021-06-08

    申请号:US16425365

    申请日:2019-05-29

    摘要: A nonvolatile memory device in which reliability is improved and a method for fabricating the same are provided. The nonvolatile memory device includes a mold structure which includes a first insulating pattern, a first gate electrode and a second insulating pattern sequentially stacked on a substrate, a semiconductor pattern which penetrates the mold structure, is connected to the substrate, and extends in a first direction, a first charge storage film extending in the first direction between the first insulating pattern and the second insulating pattern and between the first gate electrode and the semiconductor pattern, and a blocking insulation film between the first gate electrode and the first charge storage film, wherein a first length at which the first charge storage film extends in the first direction is longer than a second length at which the blocking insulation film extends in the first direction.

    Vertical memory device
    4.
    发明授权

    公开(公告)号:US10192883B2

    公开(公告)日:2019-01-29

    申请号:US15863342

    申请日:2018-01-05

    摘要: A memory device may include a peripheral region and a cell region. The peripheral region may include a first substrate, a plurality of circuit elements disposed on the first substrate, a first insulating layer disposed on the plurality of circuit elements, and a first protective layer disposed in the first insulating layer. The cell region may include a second substrate disposed on the first insulating layer, wherein the ceil region includes a first impurity region, a channel region extending in a direction substantially perpendicular to an upper surface of the second substrate, a plurality of gate electrode layers stacked on the second substrate and adjacent to the channel region, and a first contact electrically connected to the first impurity region, wherein the first protective layer is disposed below the first impurity region, and has a shape corresponding to a shape of the first impurity region.

    Three-dimensional semiconductor device

    公开(公告)号:US11574923B2

    公开(公告)日:2023-02-07

    申请号:US17152883

    申请日:2021-01-20

    摘要: A three-dimensional semiconductor device includes a stacked structure on a lower structure, the stacked structure including a lower group including gate electrodes vertically stacked and spaced apart from each other, and an upper group including gate electrodes vertically stacked and spaced apart, the lower group and the upper group being vertically stacked, and a vertical structure passing through the stacked structure. The vertical structure may include a vertical core pattern, a vertical buffer portion therein, and a surrounding vertical semiconductor layer, the vertical structure may include a lower vertical portion passing through the lower group and an upper vertical portion passing through the upper group, an upper region of the lower vertical portion may have a width greater than that of a lower region of the upper vertical portion. The vertical buffer portion may be in the lower vertical portion and below the upper vertical portion.

    SEMICONDUCTOR MEMORY DEVICE
    9.
    发明申请

    公开(公告)号:US20220013538A1

    公开(公告)日:2022-01-13

    申请号:US17158494

    申请日:2021-01-26

    摘要: A semiconductor memory device includes; a first stacked structure including a first staircase portion, a second stacked structure on the first stacked structure and including a second staircase portion overlapping the first staircase portion, a first contact plug penetrating the first stacked structure and the second stacked structure, electrically connected to the first stacked structure and not electrically connected to the second stacked structure, and a second contact plug penetrating the first stacked structure and the second stacked structure, electrically connected to the second stacked structure and not electrically connected to the first stacked structure.