Process without post-etch cleaning-converting polymer and by-products into an inert layer
    7.
    发明授权
    Process without post-etch cleaning-converting polymer and by-products into an inert layer 失效
    无需蚀刻后清洁 - 将聚合物和副产物转化成惰性层的方法

    公开(公告)号:US06365508B1

    公开(公告)日:2002-04-02

    申请号:US09618264

    申请日:2000-07-18

    IPC分类号: H01L214763

    摘要: A new method to avoid post-etch cleaning in a metallization process is described. An insulating layer is formed over a first metal line in a dielectric layer overlying a semiconductor substrate. A via opening is etched through the insulating layer to the first metal line whereby a polymer forms on sidewalls of the via opening. The polymer is treated with a fluorinating agent whereby the polymer is converted to an inert layer. Thereafter, a second metal line is formed within the via opening wherein the inert layer acts is as a barrier layer to complete the metallization process in the fabrication of an integrated circuit device.

    摘要翻译: 描述了在金属化过程中避免蚀刻后清洁的新方法。 在覆盖半导体衬底的电介质层中的第一金属线上形成绝缘层。 通孔开口通过绝缘层蚀刻到第一金属线,由此在通孔开口的侧壁上形成聚合物。 用氟化剂处理聚合物,由此将聚合物转化为惰性层。 此后,在通孔开口内形成第二金属线,其中惰性层作为阻挡层,以在集成电路器件的制造中完成金属化工艺。