Method of fabricating dual damascene interconnection
    3.
    发明申请
    Method of fabricating dual damascene interconnection 有权
    双镶嵌互连方法

    公开(公告)号:US20060024948A1

    公开(公告)日:2006-02-02

    申请号:US11157363

    申请日:2005-06-21

    IPC分类号: H01L21/4763

    CPC分类号: H01L21/76807

    摘要: In a method of fabricating a dual damascene interconnection, a reliable trench profile is secured. The method includes forming a lower interconnect feature on a substrate, forming a dielectric layer on the lower interconnect feature, forming a hard mask on the dielectric layer, forming a via in the dielectric layer using the hard mask as an etch mask, forming a trench hard mask defining a trench by patterning the hard mask, forming a trench, which is connected with the via and in which an upper interconnection line is formed, by partially etching the dielectric layer using the trench hard mask as an etch mask, removing the trench hard mask using wet etch, and forming an upper interconnection line by filling the trench and the via with an interconnection material.

    摘要翻译: 在制造双镶嵌互连的方法中,确保可靠的沟槽轮廓。 该方法包括在衬底上形成下部互连特征,在下互连特征上形成电介质层,在电介质层上形成硬掩模,使用硬掩模作为蚀刻掩模在电介质层中形成通孔,形成沟槽 硬掩模通过图案化硬掩模来形成沟槽,通过使用沟槽硬掩模作为蚀刻掩模部分地蚀刻介电层,形成与通孔连接并且其中形成上互连线的沟槽,去除沟槽 硬掩模,并且通过用互连材料填充沟槽和通孔来形成上互连线。

    Method of fabricating dual damascene interconnection
    4.
    发明授权
    Method of fabricating dual damascene interconnection 有权
    双镶嵌互连方法

    公开(公告)号:US07176126B2

    公开(公告)日:2007-02-13

    申请号:US11157363

    申请日:2005-06-21

    IPC分类号: H01L21/4763

    CPC分类号: H01L21/76807

    摘要: In a method of fabricating a dual damascene interconnection, a reliable trench profile is secured. The method includes forming a lower interconnect feature on a substrate, forming a dielectric layer on the lower interconnect feature, forming a hard mask on the dielectric layer, forming a via in the dielectric layer using the hard mask as an etch mask, forming a trench hard mask defining a trench by patterning the hard mask, forming a trench, which is connected with the via and in which an upper interconnection line is formed, by partially etching the dielectric layer using the trench hard mask as an etch mask, removing the trench hard mask using wet etch, and forming an upper interconnection line by filling the trench and the via with an interconnection material.

    摘要翻译: 在制造双镶嵌互连的方法中,确保可靠的沟槽轮廓。 该方法包括在衬底上形成下部互连特征,在下互连特征上形成电介质层,在电介质层上形成硬掩模,使用硬掩模作为蚀刻掩模在电介质层中形成通孔,形成沟槽 硬掩模通过图案化硬掩模来形成沟槽,通过使用沟槽硬掩模作为蚀刻掩模部分地蚀刻介电层,形成与通孔连接并且其中形成上互连线的沟槽,去除沟槽 硬掩模,并且通过用互连材料填充沟槽和通孔来形成上互连线。