VIA STRUCTURE AND VIA ETCHING PROCESS OF FORMING THE SAME
    3.
    发明申请
    VIA STRUCTURE AND VIA ETCHING PROCESS OF FORMING THE SAME 有权
    通过结构和通过形成它们的蚀刻过程

    公开(公告)号:US20100244247A1

    公开(公告)日:2010-09-30

    申请号:US12722949

    申请日:2010-03-12

    IPC分类号: H01L23/48 H01L21/768

    摘要: A via etching process forms a through-substrate via having a round corner and a tapered sidewall profile. A method includes providing a semiconductor substrate; forming a hard mask layer and a patterned photoresist layer on the semiconductor substrate; forming an opening in the hard mask and exposing a portion of the semiconductor substrate; forming a via passing through at least a part of the of semiconductor substrate using the patterned photoresist layer and hard mask layer as a masking element; performing a trimming process to round the top corner of the via; and removing the photoresist layer.

    摘要翻译: 通孔蚀刻工艺通过具有圆角和锥形侧壁轮廓形成通孔基板。 一种方法包括提供半导体衬底; 在所述半导体衬底上形成硬掩模层和图案化的光致抗蚀剂层; 在所述硬掩模中形成开口并暴露所述半导体衬底的一部分; 使用图案化的光致抗蚀剂层和硬掩模层作为掩模元件形成穿过半导体衬底的至少一部分的通孔; 执行修整过程以绕过通孔的顶角; 并除去光致抗蚀剂层。