BOND PAD STRUCTURE FOR BONDING IMPROVEMENT
    69.
    发明申请
    BOND PAD STRUCTURE FOR BONDING IMPROVEMENT 审中-公开
    用于粘接改进的粘结垫结构

    公开(公告)号:US20160379962A1

    公开(公告)日:2016-12-29

    申请号:US15088232

    申请日:2016-04-01

    Abstract: Some embodiments relate to a three-dimensional (3D) integrated circuit (IC). The 3DIC includes a first substrate including a photodetector which is configured to receive light in a first direction from a light source. An interconnect structure is disposed over the first substrate, and includes a plurality of metal layers and insulating layers that are over stacked over one another in alternating fashion. One of the plurality of metal layers is closest to the light source and another of the plurality of metal layers is furthest from the light source. A bond pad recess extends into the interconnect structure from an opening in a surface of the 3DIC which is nearest the light source and terminates at a bond pad. The bond pad is spaced apart from the surface of the 3DIC and is in direct contact with the one of the plurality of metal layers that is furthest from the light source.

    Abstract translation: 一些实施例涉及三维(3D)集成电路(IC)。 3DIC包括:第一基板,包括被配置为从光源接收沿第一方向的光的光电检测器。 互连结构设置在第一衬底之上,并且包括以交替方式彼此堆叠的多个金属层和绝缘层。 多个金属层中的一个最靠近光源,并且多个金属层中的另一个最远离光源。 接合焊盘凹部从最靠近光源的3DIC的表面中的开口延伸到互连结构中,并终止于接合焊盘。 接合焊盘与3DIC的表面间隔开并且与离光源最远的多个金属层中的一个直接接触。

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