公开(公告)号：US20240114693A1

公开(公告)日：2024-04-04

申请号：US17958202

申请日：2022-09-30

Applicant: Intel Corporation

Inventor： Christopher M. Neumann ,  Brian Doyle ,  Nazila Haratipour ,  Shriram Shivaraman ,  Sou-Chi Chang ,  Uygar E. Avci ,  Eungnak Han ,  Manish Chandhok ,  Nafees Aminul Kabir ,  Gurpreet Singh

IPC: H01L27/11514 ,  H01L23/522 ,  H01L23/528 ,  H01L27/11504

CPC classification number: H01L27/11514 ,  H01L23/5226 ,  H01L23/5283 ,  H01L27/11504

Abstract: In one embodiment, an apparatus includes a first metal layer, a second metal layer above the first metal layer, a first metal via generally perpendicular with and connected to the first metal layer, a second metal via generally perpendicular with and connected to the second metal layer, a third metal via generally perpendicular with and extending through the first metal layer and the second metal layer, a ferroelectric material between the third metal via and the first metal layer and between the third metal via and the second metal layer, and a hard mask material around a portion of the first metal via above the first metal layer and the second metal layer, around a portion of the second metal via above the first metal layer and the second metal layer, and around a portion of the ferroelectric material above the first metal layer and the second metal layer.

公开(公告)号：US20240203868A1

公开(公告)日：2024-06-20

申请号：US18066301

申请日：2022-12-15

Applicant: Intel Corporation

Inventor： Gurpreet Singh ,  Manish Chandhok ,  David Nathan Shykind ,  Richard E. Schenker ,  Florian Gstrein ,  Eungnak Han ,  Nafees Aminul Kabir ,  Sean Michael Pursel ,  Nityan Labros Nair ,  Robert Seidel

IPC: H01L23/522 ,  H01L21/768

CPC classification number: H01L23/5226 ,  H01L21/76802 ,  H01L21/76879

Abstract: Metal lines are formed through serial DSA processes. A first DSA process may define a pattern of first hard masks. First metal lines are fabricated based on the first hard masks. A metal cut crossing one or more first metal lines may be formed. A width of the metal cut is no greater than a pitch of the first metal lines. After the metal cut is formed, a second DSA process is performed to define a pattern of second hard masks. Edges of a second hard mask may align with edges of a first metal line. An insulator may be formed around a second hard mask to form an insulative structure. An axis of the insulative structure may be aligned with an axis of a first metal line. Second metal lines are formed based on the second hard masks and have a greater height than the first metal lines.

公开(公告)号：US11646266B2

公开(公告)日：2023-05-09

申请号：US16535539

申请日：2019-08-08

Applicant: INTEL CORPORATION

Inventor： Kevin Lai Lin ,  Miriam Ruth Reshotko ,  Nafees Aminul Kabir

IPC: H01L23/528 ,  H01L23/532 ,  H01L23/522

CPC classification number: H01L23/5283 ,  H01L23/5226 ,  H01L23/53295

Abstract: Interconnect structures are disclosed. An example includes conductive traces over a first dielectric layer, dielectric helmet structures over top surfaces of the conductive traces, and a second dielectric layer over the helmet structures. Spaces between adjacent ones of conductive traces are devoid of material. A bottom surface of the second dielectric layer is between top surfaces of the dielectric structures and bottom surfaces of the helmet structures, or co-planar with the top surface of the helmet structures, but the airgap extends above tops of the conductive traces. Another example includes a dielectric adjacent to upper sections but not lower sections of conductive traces, so as to provide airgaps between adjacent lower sections. Alternatively, a first dielectric material is adjacent the upper sections and a second compositionally different dielectric material is adjacent the lower sections. In either case, the sidewalls of the upper sections of the interconnect features may include scalloping.

公开(公告)号：US20240105588A1

公开(公告)日：2024-03-28

申请号：US17935999

申请日：2022-09-28

Applicant: Intel Corporation

Inventor： Ilya V. Karpov ,  Shafaat Ahmed ,  Matthew V. Metz ,  Darren Anthony Denardis ,  Nafees Aminul Kabir ,  Tristan A. Tronic

IPC: H01L23/522 ,  H01L21/768 ,  H01L23/528 ,  H01L23/532

CPC classification number: H01L23/5226 ,  H01L21/76834 ,  H01L21/76877 ,  H01L23/5283 ,  H01L23/53223

Abstract: An IC device includes a multilayer metal line that is at least partially surrounded by one or more electrical insulators. The multilayer metal line may be formed by stacking four layers on top of one another. The four layers may include a first layer between a second layer and a third layer. The first layer may include Al. The second or third layer may include W. The fourth layer may be a conductive or dielectric layer. The second layer, third layer, and fourth layer can protect the first layer from defects in Al core layer during fabrication or operation of the multilayer metal line. Substrative etch may be performed on the stack of the four layers to form openings. An electrical insulator may be deposited into to the openings to form multiple metal lines that are separated by the electrical insulator. A via may be formed over the third layer.

公开(公告)号：US20210043565A1

公开(公告)日：2021-02-11

申请号：US16535539

申请日：2019-08-08

Applicant: INTEL CORPORATION

Inventor： Kevin Lai Lin ,  Miriam Ruth Reshotko ,  Nafees Aminul Kabir

IPC: H01L23/528 ,  H01L23/532 ,  H01L21/768 ,  H01L23/522 ,  H01L21/311

Abstract: Interconnect structures are disclosed. An example includes conductive traces over a first dielectric layer, dielectric helmet structures over top surfaces of the conductive traces, and a second dielectric layer over the helmet structures. Spaces between adjacent ones of conductive traces are devoid of material. A bottom surface of the second dielectric layer is between top surfaces of the dielectric structures and bottom surfaces of the helmet structures, or co-planar with the top surface of the helmet structures, but the airgap extends above tops of the conductive traces. Another example includes a dielectric adjacent to upper sections but not lower sections of conductive traces, so as to provide airgaps between adjacent lower sections. Alternatively, a first dielectric material is adjacent the upper sections and a second compositionally different dielectric material is adjacent the lower sections. In either case, the sidewalls of the upper sections of the interconnect features may include scalloping.