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    LEAVE-BEHIND PROTECTIVE LAYER HAVING SECONDARY PURPOSE
    2.
    发明申请
    LEAVE-BEHIND PROTECTIVE LAYER HAVING SECONDARY PURPOSE 有权

    公开(公告)号：US20220246608A1

    公开(公告)日：2022-08-04

    申请号：US17726412

    申请日：2022-04-21

    Applicant: Intel Corporation

    Inventor： Aaron D. LILAK ,  Anh PHAN ,  Ehren MANNEBACH ,  Cheng-Ying HUANG ,  Stephanie A. BOJARSKI ,  Gilbert DEWEY ,  Orb ACTON ,  Willy RACHMADY

    IPC: H01L27/088 ,  H01L29/423 ,  H01L29/08 ,  H01L21/762 ,  H01L23/528 ,  H01L29/78 ,  H01L29/06

    Abstract: Stacked transistor structures having a conductive interconnect between upper and lower transistors. In an embodiment, the interconnect is formed by first provisioning a protective layer over an area to be protected (gate dielectric or other sensitive material) of upper transistor, and then etching material adjacent and below the protected area to expose an underlying contact point of lower transistor. A metal is deposited into the void created by the etch to provide the interconnect. The protective layer is resistant to the etch process and is preserved in the structure, and in some cases may be utilized as a work-function metal. In an embodiment, the protective layer is formed by deposition of reactive semiconductor and metal material layers which are subsequently transformed into a work function metal or work function metal-containing compound. A remnant of unreacted reactive semiconductor material may be left in structure and collinear with protective layer.

    BACKSIDE CONTACTS FOR SEMICONDUCTOR DEVICES
    3.
    发明申请
    BACKSIDE CONTACTS FOR SEMICONDUCTOR DEVICES 有权

    公开(公告)号：US20220352032A1

    公开(公告)日：2022-11-03

    申请号：US17866122

    申请日：2022-07-15

    Applicant: INTEL CORPORATION

    Inventor： Aaron D. LILAK ,  Ehren MANNEBACH ,  Anh PHAN ,  Richard E. SCHENKER ,  Stephanie A. BOJARSKI ,  Willy RACHMADY ,  Patrick R. MORROW ,  Jeffrey D. BIELEFELD ,  Gilbert DEWEY ,  Hui Jae YOO

    IPC: H01L21/8234 ,  H01L27/088 ,  H01L29/78 ,  H01L29/06 ,  H01L23/532 ,  H01L23/48

    Abstract: Backside contact structures include etch selective materials to facilitate backside contact formation. An integrated circuit structure includes a frontside contact region, a device region below the frontside contact region, and a backside contact region below the device region. The device region includes a transistor. The backside contact region includes a first dielectric material under a source or drain region of the transistor, a second dielectric material laterally adjacent to the first dielectric material and under a gate structure of the transistor. A non-conductive spacer is between the first and second dielectric materials. The first and second dielectric materials are selectively etchable with respect to one another and the spacer. The backside contact region may include an interconnect feature that, for instance, passes through the first dielectric material and contacts a bottom side of the source/drain region, and/or passes through the second dielectric material and contacts the gate structure.

    PITCH QUARTERED THREE-DIMENSIONAL AIR GAPS
    6.
    发明申请
    PITCH QUARTERED THREE-DIMENSIONAL AIR GAPS 审中-公开

    公开(公告)号：US20190385897A1

    公开(公告)日：2019-12-19

    申请号：US16463816

    申请日：2016-12-28

    Applicant: INTEL CORPORATION

    Inventor： Manish CHANDHOK ,  Sudipto NASKAR ,  Stephanie A. BOJARSKI ,  Kevin LIN ,  Marie KRYSAK ,  Tristan A. TRONIC ,  Hui Jae YOO ,  Jeffery D. BIELEFELD ,  Jessica M. TORRES

    IPC: H01L21/768 ,  H01L23/528 ,  H01L23/532

    Abstract: An integrated circuit die, a semiconductor structure, and a method of fabricating the semiconductor structure are disclosed. The integrated circuit die includes a substrate and a first anchor and a second anchor disposed on the substrate in a first plane. The integrated circuit die also includes a first wire disposed on the first anchor in the first plane, a third wire disposed on the second anchor in the first plane, and a second wire and a fourth wire suspended above the substrate in the first plane. The second wire is disposed between the first wire and the third wire and the third wire is disposed between the second wire and the fourth wire. The integrated circuit die further includes a dielectric material disposed between upper portions of the first wire, the second wire, the third wire, and the fourth wire to encapsulate an air gap.

    BACKSIDE CONTACTS FOR SEMICONDUCTOR DEVICES
    7.
    发明申请
    BACKSIDE CONTACTS FOR SEMICONDUCTOR DEVICES 有权

    公开(公告)号：US20240371700A1

    公开(公告)日：2024-11-07

    申请号：US18774351

    申请日：2024-07-16

    Applicant: Intel Corporation

    Inventor： Aaron D. LILAK ,  Ehren MANNEBACH ,  Anh PHAN ,  Richard E. SCHENKER ,  Stephanie A. BOJARSKI ,  Willy RACHMADY ,  Patrick R. MORROW ,  Jeffrey D. BIELEFELD ,  Gilbert DEWEY ,  Hui Jae YOO

    IPC: H01L21/8234 ,  H01L23/48 ,  H01L23/532 ,  H01L27/088 ,  H01L29/06 ,  H01L29/78

    Abstract: Backside contact structures include etch selective materials to facilitate backside contact formation. An integrated circuit structure includes a frontside contact region, a device region below the frontside contact region, and a backside contact region below the device region. The device region includes a transistor. The backside contact region includes a first dielectric material under a source or drain region of the transistor, a second dielectric material laterally adjacent to the first dielectric material and under a gate structure of the transistor. A non-conductive spacer is between the first and second dielectric materials. The first and second dielectric materials are selectively etchable with respect to one another and the spacer. The backside contact region may include an interconnect feature that, for instance, passes through the first dielectric material and contacts a bottom side of the source/drain region, and/or passes through the second dielectric material and contacts the gate structure.

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