Semiconductor structure and fabricating method thereof
    4.
    发明授权
    Semiconductor structure and fabricating method thereof 有权
    半导体结构及其制造方法

    公开(公告)号:US09236326B2

    公开(公告)日:2016-01-12

    申请号:US14262582

    申请日:2014-04-25

    Abstract: A semiconductor structure and a method for fabricating the same are provided. The semiconductor structure includes a wafer substrate having a top surface and a bottom surface, and a conductive pillar in the wafer substrate defined by a deep trench insulator through the top surface and the bottom surface of the wafer substrate. The method for fabricating the semiconductor structure includes following steps. A deep trench is formed from a top surface of a wafer substrate to define a conductive region in the wafer substrate. The conductive region is doped with a dopant. The deep trench is filled with an insulation material to form a deep trench insulator. And the wafer substrate is thinned from a bottom surface of the wafer substrate to expose the deep trench insulator and isolate the conductive region to form a conductive pillar.

    Abstract translation: 提供半导体结构及其制造方法。 半导体结构包括具有顶表面和底表面的晶片衬底,以及通过晶片衬底的顶表面和底表面由深沟槽绝缘体限定的晶片衬底中的导电柱。 制造半导体结构的方法包括以下步骤。 从晶片衬底的顶表面形成深沟槽以在晶片衬底中限定导电区域。 导电区域掺杂有掺杂剂。 深沟槽填充有绝缘材料以形成深沟槽绝缘体。 并且晶片衬底从晶片衬底的底表面变薄以暴露深沟槽绝缘体并隔离导电区域以形成导电柱。

    Recessed gate for an MV device
    5.
    发明授权

    公开(公告)号:US11527531B2

    公开(公告)日:2022-12-13

    申请号:US16412852

    申请日:2019-05-15

    Abstract: In some embodiments, the present disclosure relates to a semiconductor device comprising a source and drain region arranged within a substrate. A conductive gate is disposed over a doped region of the substrate. A gate dielectric layer is disposed between the source region and the drain region and separates the conductive gate from the doped region. A bottommost surface of the gate dielectric layer is below a topmost surface of the substrate. First and second sidewall spacers are arranged along first and second sides of the conductive gate, respectively. An inner portion of the first sidewall spacer and an inner portion of the second sidewall spacer respectively cover a first and second top surface of the gate dielectric layer. A drain extension region and a source extension region respectively separate the drain region and the source region from the gate dielectric layer.

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