Transistor, Semiconductor Device, and Method for Manufacturing the Same
    1.
    发明申请
    Transistor, Semiconductor Device, and Method for Manufacturing the Same 审中-公开
    晶体管,半导体器件及其制造方法

    公开(公告)号:US20130015510A1

    公开(公告)日:2013-01-17

    申请号:US13509998

    申请日:2011-08-09

    Abstract: The invention provides a transistor, a semiconductor device and a method for manufacturing the same. The method for manufacturing a transistor comprises: defining an active area on a semiconductor substrate, forming a dummy gate stack on the active area, primary spacers surrounding said dummy gate stack, and an insulating layer surrounding said primary spacers, and forming source/drain regions embedded in said active area; removing the dummy gate in said dummy gate stack to form a first recessed portion surrounded by the primary spacers; filling Cu simultaneously in said first recessed portion and in the source/drain contact holes penetrating said insulating layer to form a gate and source/drain contacts. By filling the gate and the source/drain contact holes with the metal Cu simultaneously in the Gate Last structure, the gate serial resistance and the source/drain contact holes resistance in the Gate Last process are decreased. Besides, the effect of metal filling is improved in small scale, and the process complexity and difficulty is efficiently decreased.

    Abstract translation: 本发明提供一种晶体管,半导体器件及其制造方法。 晶体管的制造方法包括:在半导体衬底上限定有源区,在有源区上形成虚拟栅极叠层,围绕所述伪栅极堆叠的主要间隔区以及围绕所述主隔板的绝缘层,以及形成源极/漏极区域 嵌入所述活动区域; 去除所述虚拟栅极堆叠中的虚拟栅极以形成由所述主隔板包围的第一凹陷部分; 在所述第一凹部和穿过所述绝缘层的源极/漏极接触孔中同时填充Cu以形成栅极和源极/漏极接触。 通过在Gate Last结构中同时用金属Cu填充栅极和源极/漏极接触孔,栅极末端工艺中的栅极串联电阻和源极/漏极接触孔电阻降低。 此外,小规模改善了金属填充的效果,有效降低了工艺的复杂性和难度。

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