Method of eliminating poor reveal of through silicon vias
    1.
    发明授权
    Method of eliminating poor reveal of through silicon vias 有权
    消除硅通孔缺点的方法

    公开(公告)号:US09443764B2

    公开(公告)日:2016-09-13

    申请号:US14052366

    申请日:2013-10-11

    Abstract: A method and structure for eliminating through silicon via poor reveal is disclosed. In one embodiment, the method includes obtaining a wafer having a front side, a back side and partially etched and metalized through silicon vias each extending from a portion of the front side through a portion of the back side, terminating before reaching an end surface of the back side. A region of the back side of the wafer is patterned and etched to expose and reveal a portion of each of the plurality of through silicon vias. A metal layer is deposited on the back side of the wafer to form a back side metallization. The metal layer covers all of the back side including the etched region of the back side and the exposed portions of each of the through silicon vias.

    Abstract translation: 公开了一种通过不良露出来消除硅的方法和结构。 在一个实施例中,该方法包括获得具有正面,背面以及通过硅通孔部分蚀刻和金属化的晶片,每个硅通孔从前侧的一部分延伸穿过后侧的一部分,在到达 背面。 对晶片的背面的区域进行图案化和蚀刻,以暴露和显露多个通孔中的每个通孔的一部分。 金属层沉积在晶片的背面以形成背面金属化。 金属层覆盖包括后侧的蚀刻区域和通孔硅通孔中的每一个的暴露部分的所有背面。

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