NOVEL METHOD FOR CREATING ALTERNATE HARDMASK CAP INTERCONNECT STRUCTURE WITH INCREASED OVERLAY MARGIN
    3.
    发明公开
    NOVEL METHOD FOR CREATING ALTERNATE HARDMASK CAP INTERCONNECT STRUCTURE WITH INCREASED OVERLAY MARGIN 审中-公开
    用增加覆盖面积来创建交替硬盖帽互连结构的新方法

    公开(公告)号:EP3238247A1

    公开(公告)日:2017-11-01

    申请号:EP14909263.7

    申请日:2014-12-24

    申请人: Intel Corporation

    IPC分类号: H01L21/768 H01L21/3205

    摘要: Embodiments of the invention include an interconnect structure and methods of forming such structures. In an embodiment, the interconnect structure may include an interlayer dielectric (ILD) with a first hardmask layer over a top surface of the ILD. Certain embodiments include one or more first interconnect lines in the ILD and a first dielectric cap positioned above each of the first interconnect lines. For example a surface of the first dielectric cap may contact a top surface of the first hardmask layer. Embodiments may also include one or more second interconnect lines in the ILD arranged in an alternating pattern with the first inter-connect lines. In an embodiment, a second dielectric cap is formed over a top surface of each of the second interconnect lines. For example, a surface of the second dielectric cap contacts a top surface of the first hardmask layer.

    摘要翻译: 本发明的实施例包括互连结构和形成这种结构的方法。 在一个实施例中,互连结构可以包括在ILD的顶表面上具有第一硬掩模层的层间电介质(ILD)。 某些实施例包括ILD中的一个或多个第一互连线以及位于每个第一互连线上方的第一电介质帽。 例如,第一电介质帽的表面可以接触第一硬掩模层的顶表面。 实施例还可以包括以与第一互连线交替的图案布置的ILD中的一个或多个第二互连线。 在一个实施例中,第二电介质帽形成在每个第二互连线的顶表面之上。 例如,第二电介质帽的表面接触第一硬掩模层的顶表面。