Method for forming semiconductor device and semiconductor device fabricated by the same

    公开(公告)号:US10515876B1

    公开(公告)日:2019-12-24

    申请号:US16159789

    申请日:2018-10-15

    Inventor: Zhi-Biao Zhou

    Abstract: A method for forming a semiconductor device includes: providing a structure having a first stop layer formed above a substrate, a first dielectric layer formed on the first stop layer, a second stop layer formed on the first dielectric layer, and conductive lines formed in the first dielectric layer and spaced apart from each other; forming a first dummy layer on the second stop layer; patterning the first dummy layer to form a first patterned dummy layer; forming a second dummy layer on the first dummy layer to form a first trench; etching back the second dummy layer and the first patterned dummy layer to form a second trench, wherein the second trench is self-aligned with the first trench. The second trench extends downwardly to the first dielectric layer and forms an opening at the second stop layer.

    PHOTOMASK
    606.
    发明申请
    PHOTOMASK 审中-公开

    公开(公告)号:US20190361339A1

    公开(公告)日:2019-11-28

    申请号:US15986799

    申请日:2018-05-22

    Abstract: The present invention provides a photomask, comprising: a substrate, a first region, a second region and a third region are defined thereon, wherein the third region is disposed between the first region and the second region, a patterned layer disposed on the substrate, wherein the patterned layer comprises a first patterned layer disposed in the first region, a second patterned layer disposed in the second region, and a third patterned layer disposed in the third region, and wherein a thickness of the first patterned layer is equal to a thickness of the second patterned layer, the thickness of the first patterned layer is different from a thickness of the third patterned layer, and at least one recess disposed in the third region.

    SEMICONDUCTOR STRUCTURE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20190355849A1

    公开(公告)日:2019-11-21

    申请号:US16529523

    申请日:2019-08-01

    Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a plurality of first gate structures, a plurality of second gate structures, a first strained region, and a second strained region. The substrate has a first region and a second region. The first gate structures are disposed in the first region on the substrate. The second gate structures are disposed in the second region on the substrate. The first strained region is formed in the substrate and has a first distance from an adjacent first gate structure. The second strained region is formed in the substrate and has a second distance from an adjacent second gate structure, wherein the second distance is greater than the first distance.

    Contact hole structure and method of fabricating the same

    公开(公告)号:US10483158B2

    公开(公告)日:2019-11-19

    申请号:US16226498

    申请日:2018-12-19

    Abstract: A method of fabricating a contact hole structure includes providing a substrate with an epitaxial layer embedded therein. Next, an interlayer dielectric is formed to cover the substrate. After that, a first hole is formed in the interlayer dielectric and the epitaxial layer. Later, a mask layer is formed to cover a sidewall of the first hole and expose a bottom of the first hole. Subsequently, a second hole is formed by etching the epitaxial layer at the bottom of the first hole and taking the mask layer and the interlayer dielectric as a mask, wherein the first hole and the second hole form a contact hole. Then, the mask layer is removed. Finally, a silicide layer is formed to cover the contact hole.

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