Seal ring structures and methods of forming same

    公开(公告)号:US10453832B2

    公开(公告)日:2019-10-22

    申请号:US15665495

    申请日:2017-08-01

    Abstract: A three-dimensional (3D) integrated circuit (IC) includes a first IC die and a second IC die. The first IC die includes a first semiconductor substrate, and a first interconnect structure over the first semiconductor substrate. The second IC die includes a second semiconductor substrate, and a second interconnect structure that separates the second semiconductor substrate from the first interconnect structure. A seal ring structure separates the first interconnect structure from the second interconnect structure and perimetrically surrounds a gas reservoir between the first IC die and second IC die. The seal ring structure includes a sidewall gas-vent opening structure configured to allow gas to pass between the gas reservoir and an ambient environment surrounding the 3D IC.

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