Integrated circuit devices having improved contact plug structures therein

    公开(公告)号:US12176287B2

    公开(公告)日:2024-12-24

    申请号:US18409447

    申请日:2024-01-10

    Abstract: An integrated circuit device includes a substrate and a first electrically insulating layer on the substrate. An electrically conductive contact plug is provided, which extends at least partially through the first electrically insulating layer. The contact plug includes a protrusion having a top surface that is spaced farther from the substrate relative to a top surface of a portion of the first electrically insulating layer extending adjacent the contact plug. An electrically conductive line is provided with a terminal end, which extends on a first portion of the protrusion. A second electrically insulating layer is provided, which extends on a second portion of the protrusion and on the first electrically insulating layer. The second electrically insulating layer has a sidewall, which extends opposite a sidewall of the terminal end of the electrically conductive line.

    Integrated circuit devices having improved contact plug structures therein

    公开(公告)号:US11908798B2

    公开(公告)日:2024-02-20

    申请号:US17406887

    申请日:2021-08-19

    CPC classification number: H01L23/5283 H01L23/5226 H01L27/092

    Abstract: An integrated circuit device includes a substrate and a first electrically insulating layer on the substrate. An electrically conductive contact plug is provided, which extends at least partially through the first electrically insulating layer. The contact plug includes a protrusion having a top surface that is spaced farther from the substrate relative to a top surface of a portion of the first electrically insulating layer extending adjacent the contact plug. An electrically conductive line is provided with a terminal end, which extends on a first portion of the protrusion. A second electrically insulating layer is provided, which extends on a second portion of the protrusion and on the first electrically insulating layer. The second electrically insulating layer has a sidewall, which extends opposite a sidewall of the terminal end of the electrically conductive line.

    SEMICONDUCTOR DEVICES AND METHODS OF FABRICATING THE SAME

    公开(公告)号:US20220238439A1

    公开(公告)日:2022-07-28

    申请号:US17458873

    申请日:2021-08-27

    Abstract: A semiconductor device includes a transistor on a substrate, a first metal layer that is on the transistor and includes a lower wire electrically connected to the transistor, and a second metal layer on the first metal layer. The second metal layer includes an upper wire that is electrically connected to the lower wire and includes a via structure in a via hole and a line structure in a line trench. The via structure includes a via portion that is in the via hole and is coupled to the lower wire, and a barrier portion that vertically extends from the via portion to cover an inner surface of the line trench. The barrier portion is between the line structure and an insulating layer of the second metal layer. The barrier portion is thicker at its lower level than at its upper level.

    Interconnection structure of integrated circuit semiconductor device

    公开(公告)号:US12230568B2

    公开(公告)日:2025-02-18

    申请号:US17856366

    申请日:2022-07-01

    Abstract: An interconnection structure of an integrated circuit semiconductor device includes: a first conductive layer on a semiconductor substrate; an interlayer insulating layer on the first conductive layer and including a trench and a via hole; a via layer in the via hole, the via layer penetrating the interlayer insulating layer through a bottom of the trench to contact the first conductive layer, the via layer including a protrusion protruding to a height greater than a height of the trench; a barrier layer selectively on the bottom and sidewalls of the trench and on sidewalls of the via layer in the trench; a cap layer on a surface of the via layer; and a second conductive layer in the trench on the barrier layer. The cap layer is electrically connected to the first conductive layer through the via layer.

    INTEGRATED CIRCUIT DEVICES HAVING IMPROVED CONTACT PLUG STRUCTURES THEREIN

    公开(公告)号:US20220199526A1

    公开(公告)日:2022-06-23

    申请号:US17406887

    申请日:2021-08-19

    Abstract: An integrated circuit device includes a substrate and a first electrically insulating layer on the substrate. An electrically conductive contact plug is provided, which extends at least partially through the first electrically insulating layer. The contact plug includes a protrusion having a top surface that is spaced farther from the substrate relative to a top surface of a portion of the first electrically insulating layer extending adjacent the contact plug. An electrically conductive line is provided with a terminal end, which extends on a first portion of the protrusion. A second electrically insulating layer is provided, which extends on a second portion of the protrusion and on the first electrically insulating layer. The second electrically insulating layer has a sidewall, which extends opposite a sidewall of the terminal end of the electrically conductive line.

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