OPTIMIZED ANNULAR COPPER TSV
    44.
    发明申请
    OPTIMIZED ANNULAR COPPER TSV 有权
    优化的环形铜片TSV

    公开(公告)号:US20120326309A1

    公开(公告)日:2012-12-27

    申请号:US13167107

    申请日:2011-06-23

    IPC分类号: H01L23/48 H01L21/283

    摘要: The present disclosure provides a thermo-mechanically reliable copper TSV and a technique to form such TSV during BEOL processing. The TSV constitutes an annular trench which extends through the semiconductor substrate. The substrate defines the inner and outer sidewalls of the trench, which sidewalls are separated by a distance within the range of 5 to 10 microns. A conductive path comprising copper or a copper alloy extends within said trench from an upper surface of said first dielectric layer through said substrate. The substrate thickness can be 60 microns or less. A dielectric layer having interconnect metallization conductively connected to the conductive path is formed directly over said annular trench.

    摘要翻译: 本公开提供了热机械可靠的铜TSV和在BEOL处理期间形成这种TSV的技术。 TSV构成延伸穿过半导体衬底的环形沟槽。 衬底限定沟槽的内侧壁和外侧壁,该侧壁分隔5至10微米的距离。 包括铜或铜合金的导电路径从所述第一介电层的上表面通过所述衬底在所述沟槽内延伸。 基板厚度可以为60微米或更小。 具有导电连接到导电路径的互连金属化的电介质层直接形成在所述环形沟槽上。