Stacked semiconductor dies with a conductive feature passing through a passivation layer

    公开(公告)号:US11177307B2

    公开(公告)日:2021-11-16

    申请号:US17005582

    申请日:2020-08-28

    Abstract: A semiconductor device structure is provided. The semiconductor device structure includes a first semiconductor die, and a second semiconductor die bonded on the first semiconductor die. A through-substrate via penetrates through a semiconductor substrate of the second semiconductor die. A passivation layer is disposed between the first semiconductor die and the second semiconductor die, wherein the passivation layer is directly bonded to the semiconductor substrate of the second semiconductor die. A conductive feature passes through the passivation layer, wherein the conductive feature is bonded to the through-substrate via. A barrier layer is disposed between the conductive feature and the passivation layer. The barrier layer covers sidewalls of the conductive feature and separates the surface of the conductive feature from a nearest neighboring surface of the first or second semiconductor die.

    Mechanisms for forming image-sensor device with epitaxial isolation feature

    公开(公告)号:US10886320B2

    公开(公告)日:2021-01-05

    申请号:US16387989

    申请日:2019-04-18

    Abstract: An image-sensor device includes a substrate including a pixel region and a logic region. A logic transistor is disposed in the logic region and is surrounded by a logic isolation feature. A radiation-sensing region is disposed in the pixel region of the substrate. An epitaxial pixel isolation feature is disposed in the pixel region and surrounds the radiation-sensing region. A doped region with a same doping polarity as the radiation-sensing region is located between a bottom of the radiation-sensing region and the back surface of the substrate. The epitaxial pixel isolation feature is in direct contact with the doped region. The doped region extends continuously under the pixel region and the logic region. The epitaxial pixel isolation feature is in direct contact with the doped region, and the logic isolation feature is spaced apart from the doped region.

    SEMICONDUCTOR DEVICE STRUCTURE WITH A CONDUCTIVE FEATURE PASSING THROUGH A PASSIVATION LAYER

    公开(公告)号:US20190252445A1

    公开(公告)日:2019-08-15

    申请号:US16395803

    申请日:2019-04-26

    Abstract: A semiconductor device structure is provided. The semiconductor device structure includes a first semiconductor die, and a second semiconductor die bonded on the first semiconductor die. A through-substrate via penetrates through a semiconductor substrate of the second semiconductor die. A passivation layer is disposed between the first semiconductor die and the second semiconductor die, wherein the passivation layer is directly bonded to the semiconductor substrate of the second semiconductor die. A conductive feature passes through the passivation layer, wherein the conductive feature is bonded to the through-substrate via. A barrier layer is disposed between the conductive feature and the passivation layer. The barrier layer covers sidewalls of the conductive feature and separates the surface of the conductive feature from a nearest neighboring surface of the first or second semiconductor die.

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