Semiconductor memory device and manufacturing method of semiconductor memory device

    公开(公告)号:US12133379B2

    公开(公告)日:2024-10-29

    申请号:US17235577

    申请日:2021-04-20

    Applicant: SK hynix Inc.

    Inventor: Nam Jae Lee

    Abstract: There are provided a semiconductor memory device and a manufacturing method of the semiconductor memory device. The semiconductor memory device includes: a channel structure including a first pillar part and a second pillar part extending from the first pillar part; a blocking insulating layer surrounding a sidewall of the first pillar part; a data storage layer disposed between the first pillar part and the blocking insulating layer; an upper select line overlapping with an end portion of the blocking insulating layer and an end portion of the data storage layer, which face in an extending direction of the second pillar part, the upper select line surrounding a sidewall of the second pillar part; and a tunnel insulating layer disposed between the first pillar part and the data storage layer, the tunnel insulating layer extending between the second pillar part and the upper select line.

    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.

    SEMICONDUCTOR STORAGE DEVICE AND METHOD FOR MANUFACTURING SEMICONDUCTOR STORAGE DEVICE

    公开(公告)号:US20240321743A1

    公开(公告)日:2024-09-26

    申请号:US18593582

    申请日:2024-03-01

    Inventor: Keisuke ISHIZUKA

    Abstract: A semiconductor storage device includes a first stacked body in which first conductive layers and first insulating layers are alternately stacked in a stacking direction, a second stacked body above the first stacked body and in which second conductive layers and second insulating layers are alternately stacked in the stacking direction, a contact that extends in the first and second stacked bodies in the stacking direction and is connected to a first conductive layer. The contact has a first portion that extends in the first stacked body and is connected at a lower end portion thereof to the first conductive layer, a second portion that extends in the second stacked body and is connected to an upper end portion of the first portion, the second portion having a cross-section at a lower end portion thereof that is smaller than a cross-section at the upper end portion of the first portion.

    Memory device having vertical structure

    公开(公告)号:US12101930B2

    公开(公告)日:2024-09-24

    申请号:US17828417

    申请日:2022-05-31

    Applicant: SK hynix Inc.

    CPC classification number: H10B41/27 H10B41/40 H10B43/27 H10B43/40

    Abstract: A memory device includes a cell wafer including a memory cell array; and a peripheral wafer including a row control circuit, a column control circuit and a peripheral circuit which control the memory cell array, and stacked on and bonded to the cell wafer in a first direction. The peripheral wafer includes a first substrate having a first surface and a second surface which face away from each other in the first direction; a first logic structure disposed on the first surface of the first substrate, and including the row control circuit and the column control circuit; and a second logic structure disposed on the second surface of the first substrate, and including the peripheral circuit.

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