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    • 7. 发明授权
    • Method for producing a copper connection between two sides of a substrate
    • 在基板的两面之间制造铜连接的方法
    • US08227340B2
    • 2012-07-24
    • US12433033
    • 2009-04-30
    • Uwe SeidelThorsten ObernhuberAlbert BirnerGeorg Ehrentraut
    • Uwe SeidelThorsten ObernhuberAlbert BirnerGeorg Ehrentraut
    • H01L21/4763H01L21/44H01L21/461
    • H01L21/76898
    • A method for producing an electrically conductive connection between a first surface of a semiconductor substrate and a second surface of the semiconductor substrate includes producing a hole, forming an electrically conductive layer that includes tungsten, removing the electrically conductive layer from the first surface of the semiconductor substrate, filling the hole with copper and thinning the semiconductor substrate. The hole is produced from the first surface of the semiconductor substrate into the semiconductor substrate. The electrically conductive layer is removed from the first surface of the semiconductor substrate, wherein the electrically conductive layer remains at least with reduced thickness in the hole. The semiconductor substrate is thinned starting from a surface, which is an opposite surface of the first surface of the semiconductor substrate, to obtain the second surface of the semiconductor substrate with the hole being uncovered at the second surface of the semiconductor substrate.
    • 一种用于在半导体衬底的第一表面和半导体衬底的第二表面之间制造导电连接的方法包括制造一个孔,形成包括钨的导电层,从半导体的第一表面去除导电层 衬底,用铜填充孔并使半导体衬底变薄。 该孔由半导体衬底的第一表面制成半导体衬底。 从半导体衬底的第一表面去除导电层,其中导电层在孔中至少具有减小的厚度。 半导体衬底从半导体衬底的第一表面的相对表面的表面开始变薄,以获得在半导体衬底的第二表面处未被覆盖的半导体衬底的第二表面。