FinFETs and Methods for Forming the Same
    7.
    发明申请
    FinFETs and Methods for Forming the Same 有权
    FinFET及其形成方法

    公开(公告)号:US20140256094A1

    公开(公告)日:2014-09-11

    申请号:US13790742

    申请日:2013-03-08

    IPC分类号: H01L29/66

    摘要: Methods for forming a semiconductor device and a FinFET device are disclosed. A method comprises forming a dummy gate electrode layer over a substrate, the dummy gate electrode layer having a first height, forming a first etch stop layer on the dummy gate electrode layer, forming a first hard mask layer on the first etch stop layer, and patterning the first hard mask layer. The method further comprises patterning the first etch stop layer to align with the patterned first hard mask layer, and patterning the gate electrode layer to form a dummy gate electrode, the dummy gate electrode aligning with the patterned first etch stop layer, wherein after the patterning the gate electrode layer the first hard mask layer has a vertical sidewall of a second height, the second height being less than the first height, and the first hard mask layer having a rounded top surface.

    摘要翻译: 公开了形成半导体器件和FinFET器件的方法。 一种方法包括在衬底上形成伪栅极电极层,所述虚拟栅极电极层具有第一高度,在所述伪栅电极层上形成第一蚀刻停止层,在所述第一蚀刻停止层上形成第一硬掩模层,以及 图案化第一硬掩模层。 该方法还包括使第一蚀刻停止层图案化以与图案化的第一硬掩模层对准,以及图案化栅极电极层以形成伪栅电极,虚拟栅电极与图案化的第一蚀刻停止层对准,其中在图案化之后 第一硬掩模层的栅电极层具有第二高度的垂直侧壁,第二高度小于第一高度,并且第一硬掩模层具有圆形顶表面。

    Method of fabricating a semiconductor structure

    公开(公告)号:US10269581B2

    公开(公告)日:2019-04-23

    申请号:US15722405

    申请日:2017-10-02

    摘要: A method of making a semiconductor structure, the method including forming a conductive layer over a substrate. The method further includes forming a first imaging layer over the conductive layer, where the first imaging layer comprises a plurality of layers. The method further includes forming openings in the first imaging layer to expose a first set of areas of the conductive layer. The method further includes implanting ions into each area of the first set of area. The method further includes forming a second imaging layer over the conductive layer. The method further includes forming openings in the second imaging layer to expose a second set of areas of the conductive layer, wherein the second set of areas is different from the first set of areas. The method further includes implanting ions into the each area of the second set of areas.