3D SEMICONDUCTOR MEMORY DEVICE AND METHOD OF FABRICATING SAME

    公开(公告)号:US20240057336A1

    公开(公告)日:2024-02-15

    申请号:US18492504

    申请日:2023-10-23

    Abstract: A semiconductor memory device includes; a lower stacked structure including lower metallic lines stacked in a first direction on a substrate, an upper stacked structure including a first upper metallic line and a second upper metallic line sequentially stacked on the lower stacked structure, a vertical structure penetrating the upper stacked structure and lower stacked structure and including a channel film, a connection pad disposed on the vertical structure, contacted with the channel film and doped with N-type impurities, a first cutting line cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, a second cutting line spaced apart from the first cutting line in a second direction different from the first direction, and cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, and sub-cutting lines cutting the first upper metallic line and the second upper metallic line between the first cutting line and the second cutting line. The channel film includes an undoped channel region and a doping channel region, and the doping channel region contacts the connection pad and overlaps a part of the second upper metallic line in the second direction.

    Semiconductor memory device and method of fabricating the same

    公开(公告)号:US11581331B2

    公开(公告)日:2023-02-14

    申请号:US17101401

    申请日:2020-11-23

    Abstract: A semiconductor memory includes metallic lines on a substrate and including an uppermost metallic line, a semiconductor conduction line on the uppermost metallic line, a vertical structure penetrating the semiconductor conduction line and metallic lines, and including a vertical structure that includes an upper channel film, a first lower channel film, and an upper connection channel film connecting the upper channel film and the first lower channel film between a bottom of the semiconductor conduction line and a bottom of the uppermost metallic line, and a first cutting line through the metallic lines and the semiconductor conduction line, and including a first upper cutting line through the semiconductor conduction line, and a first lower cutting line through the plurality of metallic lines, a width of the first upper cutting line being greater than a width of an extension line of a sidewall of the first lower cutting line.

    3D semiconductor memory device and method of fabricating same

    公开(公告)号:US12200936B2

    公开(公告)日:2025-01-14

    申请号:US18492504

    申请日:2023-10-23

    Abstract: A semiconductor memory device includes; a lower stacked structure including lower metallic lines stacked in a first direction on a substrate, an upper stacked structure including a first upper metallic line and a second upper metallic line sequentially stacked on the lower stacked structure, a vertical structure penetrating the upper stacked structure and lower stacked structure and including a channel film, a connection pad disposed on the vertical structure, contacted with the channel film and doped with N-type impurities, a first cutting line cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, a second cutting line spaced apart from the first cutting line in a second direction different from the first direction, and cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, and sub-cutting lines cutting the first upper metallic line and the second upper metallic line between the first cutting line and the second cutting line. The channel film includes an undoped channel region and a doping channel region, and the doping channel region contacts the connection pad and overlaps a part of the second upper metallic line in the second direction.

    3D semiconductor memory device and method of fabricating same

    公开(公告)号:US11502101B2

    公开(公告)日:2022-11-15

    申请号:US17022525

    申请日:2020-09-16

    Abstract: A semiconductor memory device includes; a lower stacked structure including lower metallic lines stacked in a first direction on a substrate, an upper stacked structure including a first upper metallic line and a second upper metallic line sequentially stacked on the lower stacked structure, a vertical structure penetrating the upper stacked structure and lower stacked structure and including a channel film, a connection pad disposed on the vertical structure, contacted with the channel film and doped with N-type impurities, a first cutting line cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, a second cutting line spaced apart from the first cutting line in a second direction different from the first direction, and cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, and sub-cutting lines cutting the first upper metallic line and the second upper metallic line between the first cutting line and the second cutting line. The channel film includes an undoped channel region and a doping channel region, and the doping channel region contacts the connection pad and overlaps a part of the second upper metallic line in the second direction.

    3D semiconductor memory device and method of fabricating same

    公开(公告)号:US11856778B2

    公开(公告)日:2023-12-26

    申请号:US17983007

    申请日:2022-11-08

    Abstract: A semiconductor memory device includes; a lower stacked structure including lower metallic lines stacked in a first direction on a substrate, an upper stacked structure including a first upper metallic line and a second upper metallic line sequentially stacked on the lower stacked structure, a vertical structure penetrating the upper stacked structure and lower stacked structure and including a channel film, a connection pad disposed on the vertical structure, contacted with the channel film and doped with N-type impurities, a first cutting line cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, a second cutting line spaced apart from the first cutting line in a second direction different from the first direction, and cutting the lower metallic lines, the first upper metallic line and the second upper metallic line, and sub-cutting lines cutting the first upper metallic line and the second upper metallic line between the first cutting line and the second cutting line. The channel film includes an undoped channel region and a doping channel region, and the doping channel region contacts the connection pad and overlaps a part of the second upper metallic line in the second direction.

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