BILAYER CAP STRUCTURE INCLUDING HDP/bHDP FILMS FOR CONDUCTIVE METALLIZATION AND METHOD OF MAKING SAME
    1.
    发明申请
    BILAYER CAP STRUCTURE INCLUDING HDP/bHDP FILMS FOR CONDUCTIVE METALLIZATION AND METHOD OF MAKING SAME 失效
    包括用于导电金属化的HDP / bHDP膜的双层盖结构及其制造方法

    公开(公告)号:US20060270245A1

    公开(公告)日:2006-11-30

    申请号:US10908833

    申请日:2005-05-27

    IPC分类号: H01L21/31

    摘要: The present invention relates to a bilayer cap structure for interconnect structures that comprise copper metallization or other conductive metallization. Such bilayer cap structure includes a first cap layer formed by an unbiased high density plasma (HDP) chemical vapor deposition process, and a second cap layer over the first cap layer, where the second cap layer is formed by a biased high density plasma (bHDP) chemical vapor deposition process. During the bHDP chemical vapor deposition process, a low AC bias power is applied to the substrate to increase the ion bombardment on the substrate surface and to induce resputtering of the capping material, thereby forming a seamless second cap layer with excellent reactive ion etching (RIE) selectivity.

    摘要翻译: 本发明涉及一种用于互连结构的双层盖结构,其包括铜金属化或其它导电金属化。 这种双层盖结构包括通过无偏高密度等离子体(HDP)化学气相沉积工艺形成的第一盖层和在第一盖层上的第二盖层,其中第二盖层由偏置的高密度等离子体(bHDP )化学气相沉积工艺。 在bHDP化学气相沉积工艺期间,将低AC偏置功率施加到衬底上以增加衬底表面上的离子轰击并引起封盖材料的再溅射,从而形成具有优异的反应离子蚀刻(RIE)的无缝第二帽层 )选择性。