Methods of forming through silicon via openings
    4.
    发明授权
    Methods of forming through silicon via openings 有权
    通过开孔形成硅的方法

    公开(公告)号:US09224636B2

    公开(公告)日:2015-12-29

    申请号:US14267303

    申请日:2014-05-01

    Abstract: A method includes forming an opening in a substrate, and the opening completely extends through the substrate. A recast material is formed on sidewalls of the substrate exposed by the opening. A first chemical is applied in the opening to remove the recast material, wherein a residue of the first chemical remains on portions of the sidewalls after the applying of the first chemical. Moreover, A second chemical is applied in the opening to remove the residue of the first chemical, and the second chemical is different from the first chemical.

    Abstract translation: 一种方法包括在基板中形成开口,并且开口完全延伸穿过基板。 在由开口暴露的衬底的侧壁上形成重铸材料。 在开口中施加第一种化学品以去除重铸材料,其中在施加第一种化学品之后,第一种化学物质的残留物残留在侧壁的部分上。 此外,在开口中施加第二种化学物质以除去第一化学品的残余物,而第二种化学品与第一种化学品不同。

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