Manufacturing method for deep trench capacitor with scalloped profile

    公开(公告)号:US11854817B2

    公开(公告)日:2023-12-26

    申请号:US17669970

    申请日:2022-02-11

    Inventor: Seung Mo Jo

    CPC classification number: H01L21/30655 H01L28/84 H01L28/87 H01L28/91

    Abstract: A manufacturing method for a deep trench, the method includes forming a first trench in a substrate and performing a first cycle and a second cycle. Each comprising performing a passivation operation forming a passivation film on a sidewall and a bottom surface of the first trench, performing a first etching with a first bias power to remove the passivation film formed on the bottom surface of the first trench to expose the bottom surface of the first trench, and performing a second etching with a second bias power etching the exposed bottom surface of the first trench to form a second trench disposed below the first trench. The first bias power and the second bias power in the second cycle is greater than the first bias power and the second bias power in the first cycle, respectively.

    CAPACITOR
    3.
    发明申请
    CAPACITOR 审中-公开

    公开(公告)号:US20180114640A1

    公开(公告)日:2018-04-26

    申请号:US15849815

    申请日:2017-12-21

    Abstract: A capacitor having an element main body including a metal high specific surface area substrate which has fine pores formed therein and has a large specific surface area; a dielectric layer in a prescribed region on the surface of the high specific surface area substrate including the inner surfaces of the pores; and a conductive part on the dielectric layer. A first terminal electrode is electrically connected to the high specific surface area substrate. A second terminal electrode is electrically connected to the conductive part. The element main body includes a first region that contributes to the acquisition of the capacitance and second regions having a smaller void ratio than the first region. The second regions have a void ratio of 25% or less.

    METHOD OF FORMING A CAPACITOR STRUCTURE AND CAPACITOR STRUCTURE

    公开(公告)号:US20170317161A1

    公开(公告)日:2017-11-02

    申请号:US15142332

    申请日:2016-04-29

    CPC classification number: H01L28/84 H01L21/76283 H01L28/40 H01L28/82

    Abstract: The present disclosure provides a method of forming a capacitor structure and a capacitor structure. A semiconductor-on-insulator substrate is provided comprising a semiconductor layer, a buried insulating material layer and a semiconductor substrate material. A shallow trench isolation structure defining a first active region on the SOI substrate is formed, the first active region having a plurality of trenches formed therein. Within each trench, the semiconductor substrate material is exposed on inner sidewalls and a bottom face. A layer of insulating material covering the exposed semiconductor substrate material is formed, and an electrode material is deposited on the layer of insulating material in the first active region.

    Capacitors and Methods of Forming Capacitors
    7.
    发明申请
    Capacitors and Methods of Forming Capacitors 审中-公开
    电容器和形成电容器的方法

    公开(公告)号:US20150194478A1

    公开(公告)日:2015-07-09

    申请号:US14147424

    申请日:2014-01-03

    CPC classification number: H01L28/84 H01L28/91

    Abstract: A method of forming a capacitor includes forming an elevationally elongated and elevationally inner capacitor electrode that comprises different composition laterally-outermost and laterally-innermost conductive portions that have different respective intrinsic residual mechanical stress. The innermost conductive portion is formed to have greater mechanical stress in the compressive direction than the outermost conductive portion. A capacitor dielectric is formed over the inner capacitor electrode and an elevationally outer capacitor electrode is formed over the capacitor dielectric. A capacitor construction independent of the method formed is disclosed.

    Abstract translation: 形成电容器的方法包括形成具有不同组成的横向最外侧和最外层的导电部分的具有不同的各自的本征残余机械应力的不规则的细长的和垂直内部的电容器电极。 最内侧的导电部形成为具有比最外侧导电部更大的压缩方向的机械应力。 在内部电容器电极上形成电容器电介质,并且在电容器电介质上方形成正面外部的电容器电极。 公开了独立于所形成方法的电容器结构。

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