Mechanism for forming metal gate structure
    2.
    发明授权
    Mechanism for forming metal gate structure 有权
    形成金属栅极结构的机理

    公开(公告)号:US09231098B2

    公开(公告)日:2016-01-05

    申请号:US14067154

    申请日:2013-10-30

    Abstract: Embodiments of mechanisms for forming a semiconductor device are provided. The semiconductor device includes a semiconductor substrate. A source region and a drain region are formed in the semiconductor substrate, and metal silicide regions are formed in the source region and the drain region, respectively. The semiconductor device further includes a metal gate stack formed over the semiconductor substrate and between the source region and the drain region. The semiconductor device also includes an insulating layer formed over the semiconductor substrate and surrounding the metal gate stack, wherein the insulating layer has contact openings exposing the metal silicide regions, respectively. The semiconductor device includes a dielectric spacer liner layer formed over inner walls of the contact openings, wherein the whole of the dielectric spacer liner layer is right above the metal silicide regions. The semiconductor device includes contact plugs formed in the contact openings.

    Abstract translation: 提供了用于形成半导体器件的机构的实施例。 半导体器件包括半导体衬底。 在半导体衬底中形成源极区和漏极区,并且在源极区和漏极区分别形成金属硅化物区。 半导体器件还包括形成在半导体衬底上并且在源极区域和漏极区域之间的金属栅极叠层。 半导体器件还包括形成在半导体衬底上并围绕金属栅堆叠的绝缘层,其中绝缘层具有分别暴露金属硅化物区域的接触开口。 半导体器件包括在接触开口的内壁上形成的电介质隔离衬垫层,其中整个电介质隔离衬垫层位于金属硅化物区域的正上方。 半导体器件包括形成在接触开口中的接触插塞。

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