SEMICONDUCTOR MEMORY DEVICE AND FABRICATION METHOD THEREOF

    公开(公告)号:US20240332383A1

    公开(公告)日:2024-10-03

    申请号:US18739336

    申请日:2024-06-11

    发明人: Liang Yi Chi Ren

    摘要: A method for forming a semiconductor memory device is disclosed. A substrate is provided. A pair of floating gates are formed on the substrate. A recessed region is formed in the substrate between the floating gates, wherein an upper surface of the recessed region has a concave profile lower than a surface of the substrate and with a radius between 40 nm and 60 nm in a cross-sectional view perpendicular to the floating gates. A source line doped region is formed in the recessed region. An erase gate is formed between the floating gates and on the recessed region, and a word line is formed on the substrate and adjacent to a side of each of the floating gates opposite to the erase gate. A bit line doped region is formed in the substrate and adjacent to the word line.

    Nonvolatile memory device having a ferroelectric layer

    公开(公告)号:US12108606B2

    公开(公告)日:2024-10-01

    申请号:US17892514

    申请日:2022-08-22

    申请人: SK hynix Inc.

    摘要: A nonvolatile memory device includes a substrate having an upper surface, and a gate structure disposed over the substrate. The gate structure includes at least one gate electrode layer pattern and at least one gate insulation layer pattern, which are alternately stacked along a first direction perpendicular to the upper surface. The gate structure extends in a second direction perpendicular to the first direction. The nonvolatile memory device includes a ferroelectric layer disposed on at least a portion of one sidewall surface of the gate structure. The one sidewall surface of the gate structure forms a plane substantially parallel to the first and second directions. The nonvolatile memory device includes a channel layer disposed on the ferroelectric layer, and a source electrode structure and a drain electrode structure disposed to contact the channel layer and spaced apart from each other in the second direction.

    SEMICONDUCTOR STRUCTURE
    8.
    发明公开

    公开(公告)号:US20240297226A1

    公开(公告)日:2024-09-05

    申请号:US18660728

    申请日:2024-05-10

    摘要: A semiconductor structure is provided. The semiconductor structure includes a pad layer, a first conductive layer, a second conductive layer, an interlayer dielectric layer, and a control gate. The pad layer is disposed on a substrate. The first conductive layer is disposed on the pad layer. The second conductive layer is disposed on the first conductive layer. The interlayer dielectric layer is disposed on the first conductive layer and the second conductive layer and is in contact with top surfaces of the first conductive layer and the second conductive layer. The control gate is disposed on the interlayer dielectric layer.