METHODS OF FABRICATING A SEMICONDUCTOR IC HAVING A HARDENED SHALLOW TRENCH ISOLATION (STI)
    54.
    发明申请
    METHODS OF FABRICATING A SEMICONDUCTOR IC HAVING A HARDENED SHALLOW TRENCH ISOLATION (STI) 有权
    制造具有硬化的浅层分离分离(STI)的半导体IC的方法

    公开(公告)号:US20120329239A1

    公开(公告)日:2012-12-27

    申请号:US13167558

    申请日:2011-06-23

    IPC分类号: H01L21/762

    CPC分类号: H01L21/76224

    摘要: Methods and provided for fabricating a semiconductor IC having a hardened shallow trench isolation (STI). In accordance with one embodiment the method includes providing a semiconductor substrate and forming an etch mask having an opening exposing a portion the semiconductor substrate. The exposed portion is etched to form a trench extending into the semiconductor substrate and an oxide is deposited to at least partially fill the trench. At least the surface portion of the oxide is plasma nitrided to form a nitrided oxide layer and then the etch mask is removed.

    摘要翻译: 提供用于制造具有硬化浅沟槽隔离(STI)的半导体IC的方法。 根据一个实施例,该方法包括提供半导体衬底并形成具有暴露半导体衬底的一部分的开口的蚀刻掩模。 蚀刻暴露部分以形成延伸到半导体衬底中的沟槽,并且沉积氧化物以至少部分地填充沟槽。 至少氧化物的表面部分被等离子体氮化以形成氮化氧化物层,然后去除蚀刻掩模。