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Stress relieving through-silicon vias

机译:应力消除硅通孔

摘要

Methods and systems for stress relieving through-silicon vias are disclosed and may include forming a semiconductor device comprising a stress relieving stepped through-silicon-via (TSV), said stress relieving stepped TSV being formed by: forming first mask layers on a top surface and a bottom surface of a silicon layer, forming a via hole through the silicon layer at exposed regions defined by the first mask layers, and removing the first mask layers. The formed via hole may be filled with metal, second mask layers may be formed covering top and bottom surfaces of the silicon layer and a portion of top and bottom surfaces of the metal filling the formed via hole, and metal may be removed from the top and bottom surfaces of the metal exposed by the second mask layers to a depth of less than half a thickness of the silicon layer.
机译:公开了用于消除应力的贯穿硅通孔的方法和系统,该方法和系统可包括形成包括应力消除的阶梯状贯穿硅通孔(TSV)的半导体器件,所述应力消除的阶梯状TSV通过以下步骤形成:在顶表面上形成第一掩模层。硅层的底面,在由第一掩模层限定的暴露区域形成穿过硅层的通孔,并去除第一掩模层。形成的通孔可以用金属填充,可以形成第二掩模层,该第二掩模层覆盖硅层的顶表面和底表面,并且金属的顶表面和底表面的一部分填充形成的通孔,并且可以从顶部去除金属。第二掩模层所暴露的金属的底表面的深度小于硅层的厚度的一半。

著录项

  • 公开/公告号US10134635B1

    专利类型

  • 公开/公告日2018-11-20

    原文格式PDF

  • 申请/专利权人 AMKOR TECHNOLOGY INC.;

    申请/专利号US201715468433

  • 发明设计人 BORA BALOGLU;RONALD PATRICK HUEMOELLER;

    申请日2017-03-24

  • 分类号H01L29/40;H01L21/768;H01L21/48;H01L23/48;H01L23/498;

  • 国家 US

  • 入库时间 2022-08-21 12:10:21

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