SEMICONDUCTOR DEVICES AND METHODS FOR FABRICATING THE SAME

    公开(公告)号:US20190214391A1

    公开(公告)日:2019-07-11

    申请号:US16053315

    申请日:2018-08-02

    Abstract: A semiconductor device includes a substrate that includes a cell region and a peripheral circuit region, a cell insulating pattern disposed in the cell region of the substrate that defines a cell active region, and a peripheral insulating pattern disposed in the peripheral circuit region of the substrate that defines a peripheral active region. The peripheral insulating pattern includes a first peripheral insulating pattern having a first width and a second peripheral insulating pattern having a second width greater than the first width. A topmost surface of at least one of the first peripheral insulating pattern and the second peripheral insulating pattern is positioned higher than a topmost surface of the cell insulating pattern.

    Semiconductor devices with alignment keys

    公开(公告)号:US10332842B2

    公开(公告)日:2019-06-25

    申请号:US16026937

    申请日:2018-07-03

    Abstract: A semiconductor device includes an alignment key on a substrate. The alignment key includes a first sub-alignment key pattern with a first conductive pattern, a second conductive pattern, and a capping dielectric pattern that are sequentially stacked on the substrate, an alignment key trench that penetrates at least a portion of the first sub-alignment key pattern, and a lower conductive pattern in the alignment key trench. The alignment key trench includes an upper trench that is provided in the capping dielectric pattern that has a first width, and a lower trench that extends downward from the upper trench and that has a second width less than the first width. The lower conductive pattern includes sidewall conductive patterns that are separately disposed on opposite sidewalls of the lower trench.

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