Semiconductor device with trench isolation
    5.
    发明授权
    Semiconductor device with trench isolation 有权
    具有沟槽隔离的半导体器件

    公开(公告)号:US09099324B2

    公开(公告)日:2015-08-04

    申请号:US14062838

    申请日:2013-10-24

    Abstract: A semiconductor device includes a semiconductor substrate and a trench isolation. The trench isolation is located in the semiconductor substrate, and includes an epitaxial layer and a dielectric material. The epitaxial layer is in a trench of the semiconductor and is peripherally enclosed thereby, in which the epitaxial layer is formed by performing etch and epitaxy processes. The etch and epitaxy process includes etching out a portion of a sidewall of the trench and a portion of a bottom surface of the trench and forming the epitaxial layer conformal to the remaining portion of the sidewall and the remaining portion of the bottom surface. The dielectric material is peripherally enclosed by the epitaxial layer.

    Abstract translation: 半导体器件包括半导体衬底和沟槽隔离。 沟槽隔离位于半导体衬底中,并且包括外延层和电介质材料。 外延层位于半导体的沟槽中并由其周边封闭,其中通过进行蚀刻和外延工艺形成外延层。 蚀刻和外延工艺包括蚀刻沟槽的侧壁的一部分和沟槽的底表面的一部分,并且形成与侧壁的剩余部分和底表面的剩余部分共形的外延层。 电介质材料由外延层周边封闭。

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