Semiconductor device including an element separation structure

    公开(公告)号:US11552167B2

    公开(公告)日:2023-01-10

    申请号:US17363861

    申请日:2021-06-30

    Abstract: A semiconductor device includes first and second active patterns extending in a first direction, a first epitaxial pattern on the first active pattern and adjacent to the second active pattern, a second epitaxial pattern on the second active pattern and adjacent to the first active pattern, an element separation structure separating the first and second active patterns between the first and second epitaxial patterns, and including a core separation pattern, and a separation side wall pattern on a side wall of the core separation pattern, and a gate structure extending in a second direction intersecting the first direction, on the first active pattern. An upper surface of the gate structure is on the same plane as an upper surface of the core separation pattern. The separation side wall pattern includes a high dielectric constant liner, which includes a high dielectric constant dielectric film including a metal.

    SEMICONDUCTOR DEVICE INCLUDING AN ELEMENT SEPARATION STRUCTURE

    公开(公告)号:US20220013630A1

    公开(公告)日:2022-01-13

    申请号:US17363861

    申请日:2021-06-30

    Abstract: A semiconductor device includes first and second active patterns extending in a first direction, a first epitaxial pattern on the first active pattern and adjacent to the second active pattern, a second epitaxial pattern on the second active pattern and adjacent to the first active pattern, an element separation structure separating the first and second active patterns between the first and second epitaxial patterns, and including a core separation pattern, and a separation side wall pattern on a side wall of the core separation pattern, and a gate structure extending in a second direction intersecting the first direction, on the first active pattern. An upper surface of the gate structure is on the same plane as an upper surface of the core separation pattern. The separation side wall pattern includes a high dielectric constant liner, which includes a high dielectric constant dielectric film including a metal.

    Method of forming pattern of semiconductor device

    公开(公告)号:US10553429B2

    公开(公告)日:2020-02-04

    申请号:US15355360

    申请日:2016-11-18

    Abstract: A method of forming a pattern of a semiconductor device includes forming a mask and a sacrificial layer on a substrate, etching the sacrificial layer in a first area of the substrate to form first units, each having a first width and a first distance from an adjacent unit, etching the sacrificial layer in a second area of the substrate to form second units, each having a second width equal to the first distance and being spaced apart from an adjacent unit by a second distance equal to the first width, forming a spacer conformally covering the first and second units, the spacer having a first thickness and being merged between the second units, removing a portion of the spacer on upper surfaces of the first and second units, and etching the mask in a region from which first and second units have been removed.

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