Semiconductor memory devices and methods of manufacturing thereof

    公开(公告)号:US12089417B2

    公开(公告)日:2024-09-10

    申请号:US17459847

    申请日:2021-08-27

    摘要: Memory devices and a method of fabricating memory devices are disclosed. In one aspect, the method includes forming a plurality of first transistors in a first area and a plurality of second transistors in a second area and forming a stack over the second area. The method includes forming a memory array portion and an interface portion through the stack. The memory array portion includes memory strings and the interface portion includes first conductive structures extending along a lateral direction. The method further includes simultaneously forming second conductive structures in the first area and forming third conductive structures in the second area. The second conductive structures each vertically extend to electrically couple to at least one of the first transistors, and the third conductive structures each vertically extend through one of the memory strings to electrically couple to at least one of the second transistors.

    SEMICONDUCTOR DIE
    67.
    发明公开
    SEMICONDUCTOR DIE 审中-公开

    公开(公告)号:US20240297137A1

    公开(公告)日:2024-09-05

    申请号:US18660190

    申请日:2024-05-09

    IPC分类号: H01L23/00 H01L23/522

    摘要: A semiconductor die includes a semiconductor substrate, an interconnect structure, and a conductive bump. The interconnect structure is disposed on and electrically connected to the semiconductor substrate. The interconnect structure includes stacked interconnect layers. Each of the stacked interconnect layers includes a dielectric layer and an interconnect wiring embedded in the dielectric layer. The interconnect wiring of a first interconnect layer among the stacked interconnect layers further includes a first via and second vias. The first via electrically connected to the interconnect wiring. The second vias connected to the interconnect wiring, and the first via and the second vias are located on a same level height. The conductive bump is disposed on the interconnect structure. The conductive bump includes a base portion and a protruding portion connected to the base portion, and the base portion is between the protruding portion and the first via.

    SEMICONDUCTOR STORAGE DEVICE
    69.
    发明公开

    公开(公告)号:US20240296888A1

    公开(公告)日:2024-09-05

    申请号:US18653785

    申请日:2024-05-02

    发明人: Hiroshi MAEJIMA

    摘要: A semiconductor storage device includes word lines extending in first and second directions, and separated from each other in a third direction, sense amplifier circuits that partially overlap the word lines in the third direction, memory strings intersecting the word lines and extending in the third direction, memory-side bit lines extending in the first direction, separated from each other in the second direction, and including first and second adjacent memory-side bit lines, circuit-side bit lines between the word lines and the sense amplifier circuits and partially overlapping the respective memory-side bit lines in the third direction, and contact plugs extending in the third direction and respectively connecting the memory-side bit lines and the circuit-side bit lines. The contact plugs include first and second contract plugs that are electrically connected to the first and second memory-side bit lines, respectively, and are not aligned along the first or second direction.