Method for forming aluminum lines over aluminum-filled vias in a semiconductor substrate
    1.
    发明授权
    Method for forming aluminum lines over aluminum-filled vias in a semiconductor substrate 失效
    在半导体衬底中的铝填充通孔上形成铝线的方法

    公开(公告)号:US06509274B1

    公开(公告)日:2003-01-21

    申请号:US09632486

    申请日:2000-08-04

    IPC分类号: H01L21302

    摘要: A method for forming aluminum lines over aluminum-filled vias in a semiconductor substrate that can compensate for some misalignment between the filled vias and the lines. By alternately depositing liner-barrier layers and aluminum layers on the substrate, different etch chemistries can be used that can anisotropically etch an aluminum layer used to form the lines without etching voids in the aluminum-filled vias.

    摘要翻译: 一种用于在半导体衬底中的铝填充通孔上形成铝线的方法,其可以补偿所填充的通孔和线之间的一些不对准。 通过在衬底上交替沉积衬垫阻挡层和铝层,可以使用不同的蚀刻化学性质,其可以各向异性地蚀刻用于形成线的铝层,而不会在铝填充的通孔中蚀刻空隙。