Non-planar field effect transistor having a semiconductor fin and method for manufacturing
    37.
    发明授权
    Non-planar field effect transistor having a semiconductor fin and method for manufacturing 有权
    具有半导体鳍片的非平面场效应晶体管及其制造方法

    公开(公告)号:US09136356B2

    公开(公告)日:2015-09-15

    申请号:US14176873

    申请日:2014-02-10

    Abstract: A method for manufacturing a semiconductor device includes forming two isolation structures in a substrate to define a fin structure between the two isolation structures in the substrate. A dummy gate and spacers are formed bridging the two isolation structures and over the fin structure. The two isolation structures are etched with the dummy gate and the spacers as a mask to form a plurality of slopes under the spacers in the two isolation structures. A gate etch stop layer is formed overlying the plurality of slopes. The dummy gate and the two isolation structures beneath the dummy gate are removed to create a cavity confined by the spacers and the gate etch stop layer. A gate is then formed in the cavity.

    Abstract translation: 一种用于制造半导体器件的方法包括在衬底中形成两个隔离结构以在衬底中的两个隔离结构之间限定翅片结构。 形成虚拟栅极和间隔物,桥接两个隔离结构和鳍状结构。 用伪栅极和间隔物作为掩模蚀刻两个隔离结构,以在两个隔离结构中的间隔物下方形成多个斜面。 在多个斜面上形成栅极蚀刻停止层。 去除虚拟栅极和虚拟栅极之下的两个隔离结构以产生由间隔物和栅极蚀刻停止层限制的空腔。 然后在空腔中形成栅极。

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