METAL GATES FOR SEMICONDUCTOR DEVICES AND METHOD THEREOF

    公开(公告)号:US20240429281A1

    公开(公告)日:2024-12-26

    申请号:US18339596

    申请日:2023-06-22

    Abstract: A method of manufacturing a semiconductor device includes forming a first stack of nanostructures suspended in a first region, a second stack of nanostructures suspended in a second region, and a third stack of nanostructures suspended in a third region, depositing a first work function (WF) layer wrapping around the nanostructures in the first, second, and third regions, removing the first WF layer from the first and second regions, depositing a second WF layer wrapping around the nanostructures in the first and second regions and over the first WF layer in the third region, removing the second WF layer from the first region, depositing a third WF layer wrapping around the nanostructures in the first region and over the second WF layer in the second and third regions, and forming a capping layer over the third WF layer in the first, second, and third regions.

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