Hybrid Fin Structure of Semiconductor Device and Method of Forming Same

    公开(公告)号:US20240387279A1

    公开(公告)日:2024-11-21

    申请号:US18786530

    申请日:2024-07-28

    Abstract: A semiconductor device and a method of forming the same are provided. A device includes a substrate, a first isolation structure over the substrate, a first fin and a second fin over the substrate and extending through the first isolation structure, and a hybrid fin extending into the first isolation structure and interposed between the first fin and the second fin. A top surface of the first fin and a top surface of the second fin are above a top surface of the first isolation structure. A top surface of the hybrid fin is above the top surface of the first isolation structure. The hybrid fin includes an upper region, and a lower region under the upper region. The lower region includes a seam. A topmost portion of the seam is below the top surface of the first fin and the top surface of the second fin.

    Hybrid Fin Structure of Semiconductor Device and Method of Forming Same

    公开(公告)号:US20230135509A1

    公开(公告)日:2023-05-04

    申请号:US17581611

    申请日:2022-01-21

    Abstract: A semiconductor device and a method of forming the same are provided. A device includes a substrate, a first isolation structure over the substrate, a first fin and a second fin over the substrate and extending through the first isolation structure, and a hybrid fin extending into the first isolation structure and interposed between the first fin and the second fin. A top surface of the first fin and a top surface of the second fin are above a top surface of the first isolation structure. A top surface of the hybrid fin is above the top surface of the first isolation structure. The hybrid fin includes an upper region, and a lower region under the upper region. The lower region includes a seam. A topmost portion of the seam is below the top surface of the first fin and the top surface of the second fin.

    Semiconductor device and method
    18.
    发明授权

    公开(公告)号:US12218221B2

    公开(公告)日:2025-02-04

    申请号:US17744061

    申请日:2022-05-13

    Abstract: Semiconductor devices including fin-shaped isolation structures and methods of forming the same are disclosed. In an embodiment, a semiconductor device includes a fin extending from a semiconductor substrate; a shallow trench isolation (STI) region over the semiconductor substrate adjacent the fin; and a dielectric fin structure over the STI region, the dielectric fin structure extending in a direction parallel to the fin, the dielectric fin structure including a first liner layer in contact with the STI region; and a first fill material over the first liner layer, the first fill material including a seam disposed in a lower portion of the first fill material and separated from a top surface of the first fill material, a first carbon concentration in the lower portion of the first fill material being greater than a second carbon concentration in an upper portion of the first fill material.

    Formation and in-situ treatment processes for gap fill layers

    公开(公告)号:US10937686B2

    公开(公告)日:2021-03-02

    申请号:US16517934

    申请日:2019-07-22

    Abstract: The present disclosure relates to a semiconductor device and a manufacturing method, and more particularly to a semiconductor device having an enhanced gap fill layer in trenches. The present disclosure provides a novel gap fill layer formed using a multi-step deposition and in-situ treatment process. The deposition process can be a flowable chemical vapor deposition (FCVD) utilizing one or more assist gases and molecules of low reactive sticking coefficient (RSC). The treatment process can be an in-situ process after the deposition process and includes exposing the deposited gap fill layer to plasma activated assist gas. The assist gas can be formed of ammonia. The low RSC molecule can be formed of trisilylamin (TSA) or perhydropolysilazane (PHPS).

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