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公开(公告)号:US20210358912A1
公开(公告)日:2021-11-18
申请号:US17322472
申请日:2021-05-17
申请人: Semiconductor Manufacturing International (Shanghai) Corporation , Semiconductor Manufacturing International (Beijing) Corporation
发明人: Shuaijie CHI , Haiyang ZHANG , Ermin CHONG , Wei TIAN
IPC分类号: H01L27/092 , H01L29/66 , H01L29/06 , H01L21/8234
摘要: Semiconductor structures and fabrication methods thereof are provided. The semiconductor includes a substrate; a gate structure on the substrate; and a dielectric layer on the substrate and covering sidewall surfaces of the gate structure. The dielectric layer includes an opening passing through the gate structure along a direction perpendicular to an extending direction of the gate structure. The semiconductor structure also includes a first isolation layer in the opening and with a top surface lower than a top surface of the gate structure.