FORKSHEET TRANSISTORS WITH DIELECTRIC OR CONDUCTIVE SPINE

    公开(公告)号:US20240153956A1

    公开(公告)日:2024-05-09

    申请号:US18409519

    申请日:2024-01-10

    CPC classification number: H01L27/1203 H01L21/84

    Abstract: Embodiments disclosed herein include forksheet transistor devices having a dielectric or a conductive spine. For example, an integrated circuit structure includes a dielectric spine. A first transistor device includes a first vertical stack of semiconductor channels spaced apart from a first edge of the dielectric spine. A second transistor device includes a second vertical stack of semiconductor channels spaced apart from a second edge of the dielectric spine. An N-type gate structure is on the first vertical stack of semiconductor channels, a portion of the N-type gate structure laterally between and in contact with the first edge of the dielectric spine and the first vertical stack of semiconductor channels. A P-type gate structure is on the second vertical stack of semiconductor channels, a portion of the P-type gate structure laterally between and in contact with the second edge of the dielectric spine and the second vertical stack of semiconductor channels.

    STACKED SOURCE-DRAIN-GATE CONNECTION AND PROCESS FOR FORMING SUCH

    公开(公告)号:US20230238436A1

    公开(公告)日:2023-07-27

    申请号:US18130824

    申请日:2023-04-04

    CPC classification number: H01L29/41741 H01L29/41775

    Abstract: A device is disclosed. The device includes a first epitaxial region, a second epitaxial region, a first gate region between the first epitaxial region and a second epitaxial region, a first dielectric structure underneath the first epitaxial region, a second dielectric structure underneath the second epitaxial region, a third epitaxial region underneath the first epitaxial region, a fourth epitaxial region underneath the second epitaxial region, and a second gate region between the third epitaxial region and a fourth epitaxial region and below the first gate region. The device also includes, a conductor via extending from the first epitaxial region, through the first dielectric structure and the third epitaxial region, the conductor via narrower at an end of the conductor via that contacts the first epitaxial region than at an opposite end.

    ETCHSTOP REGIONS IN FINS OF SEMICONDUCTOR DEVICES

    公开(公告)号:US20200279941A1

    公开(公告)日:2020-09-03

    申请号:US16650834

    申请日:2017-12-27

    Abstract: Disclosed are etchstop regions in fins of semiconductor devices, and related methods. A semiconductor device includes a buried region, a fin on the buried region, and a gate formed at least partially around the fin. At least a portion of the fin that borders the buried region includes an etchstop material. The etchstop material includes a doped semiconductor material that has a slower etch rate than that of an intrinsic form of the semiconductor material. A method of manufacturing a semiconductor device includes forming a gate on a fin, implanting part of the fin with dopants configured to decrease an etch rate of the part of the fin, removing at least part of the fin, and forming an epitaxial semiconductor material on a remaining proximal portion of the fin.

    STACKED SOURCE-DRAIN-GATE CONNECTION AND PROCESS FOR FORMING SUCH

    公开(公告)号:US20240145557A1

    公开(公告)日:2024-05-02

    申请号:US18408346

    申请日:2024-01-09

    CPC classification number: H01L29/41741 H01L29/41775

    Abstract: A device is disclosed. The device includes a first epitaxial region, a second epitaxial region, a first gate region between the first epitaxial region and a second epitaxial region, a first dielectric structure underneath the first epitaxial region, a second dielectric structure underneath the second epitaxial region, a third epitaxial region underneath the first epitaxial region, a fourth epitaxial region underneath the second epitaxial region, and a second gate region between the third epitaxial region and a fourth epitaxial region and below the first gate region. The device also includes, a conductor via extending from the first epitaxial region, through the first dielectric structure and the third epitaxial region, the conductor via narrower at an end of the conductor via that contacts the first epitaxial region than at an opposite end.

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