Process for forming a dual damascene structure
    4.
    发明公开
    Process for forming a dual damascene structure 有权
    Herstellung einer Doppel-Damaszener-Struktur

    公开(公告)号:EP1280197A1

    公开(公告)日:2003-01-29

    申请号:EP02100794.3

    申请日:2002-07-09

    发明人: ALI, Abbas YANG, Ming

    IPC分类号: H01L21/768

    摘要: The invention describes a method for forming a dual damascene structure. An etch stop layer (150) is formed on a dielectric layer (140). A second dielectric layer (160) is formed on the etch stop layer (150) and an oxynitride ARC layer (170) is formed the second dielectric layer. A first trench (185) is etched in the second dielectric layer (160) to a depth greater than the thickness of the second dielectric layer (160). A first trench (185) and a second trench (195) are then simultaneously formed in the first and second dielectric layers (140) and (160) respectively.

    摘要翻译: 本发明描述了形成双镶嵌结构的方法。 在电介质层(140)上形成刻蚀停止层(150)。 在蚀刻停止层(150)上形成第二介电层(160),并且在第二介电层上形成氧氮化物ARC层(170)。 第一沟槽(185)在第二介电层(160)中被蚀刻到比第二介电层(160)的厚度大的深度。 然后分别在第一和第二介电层(140)和(160)中形成第一沟槽(185)和第二沟槽(195)。