SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME

    公开(公告)号:US20200144129A1

    公开(公告)日:2020-05-07

    申请号:US16439860

    申请日:2019-06-13

    Abstract: Disclosed are semiconductor devices and methods of fabricating the same. The method comprises sequentially stacking a lower sacrificial layer and an upper sacrificial layer on a substrate, patterning the upper sacrificial layer to form a first upper sacrificial pattern and a second upper sacrificial pattern, forming a first upper spacer and a second upper spacer on sidewalls of the first upper sacrificial pattern and a second upper sacrificial pattern, respectively, using the first and second upper spacers as an etching mask to pattern the lower sacrificial layer to form a plurality of lower sacrificial patterns, forming a plurality of lower spacers on sidewalls of the lower sacrificial patterns, and using the lower spacers as an etching mask to pattern the substrate. The first and second upper spacers are connected to each other.

    SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME

    公开(公告)号:US20210057284A1

    公开(公告)日:2021-02-25

    申请号:US17089822

    申请日:2020-11-05

    Abstract: Disclosed are semiconductor devices and methods of fabricating the same. The method comprises sequentially stacking a lower sacrificial layer and an upper sacrificial layer on a substrate, patterning the upper sacrificial layer to form a first upper sacrificial pattern and a second upper sacrificial pattern, forming a first upper spacer and a second upper spacer on sidewalls of the first upper sacrificial pattern and a second upper sacrificial pattern, respectively, using the first and second upper spacers as an etching mask to pattern the lower sacrificial layer to form a plurality of lower sacrificial patterns, forming a plurality of lower spacers on sidewalls of the lower sacrificial patterns, and using the lower spacers as an etching mask to pattern the substrate. The first and second upper spacers are connected to each other.

    METHODS OF FABRICATING A SEMICONDUCTOR DEVICE

    公开(公告)号:US20170154976A1

    公开(公告)日:2017-06-01

    申请号:US15244265

    申请日:2016-08-23

    Abstract: A method of fabricating a semiconductor device includes providing a substrate that includes first and second main regions and a dummy region, and forming dummy active patterns on the dummy region. The first and second main regions are spaced apart from each other in a first direction and the dummy region includes a dummy connection region between the first and second main regions and first and second dummy cell regions spaced apart from each other in a second direction. First dummy active patterns, second dummy active patterns, and connection dummy active patterns connecting some of the first dummy active patterns to some of the second dummy active patterns are provided on the first and second dummy cell regions and the dummy connection region, respectively.

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