Invention Grant
- Patent Title: Iterative formation of damascene interconnects
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Application No.: US16923332Application Date: 2020-07-08
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Publication No.: US11430753B2Publication Date: 2022-08-30
- Inventor: Eric R. Miller , Sean P. Kilcoyne , Michael V. Liguori , Michael J. Rondon
- Applicant: Raytheon Company
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Agency: Cantor Colburn LLP
- Main IPC: H01L21/66
- IPC: H01L21/66 ; H01L23/00

Abstract:
Disclosed herein are interconnects and methods of fabricating a plurality of interconnects. The method includes depositing a conformal layer of a plating base in each of a plurality of vias, and depositing a photoresist on two portions of a surface of the plating base outside and above the plurality of vias. The method also includes depositing a plating metal over the plating base in each of the plurality of vias, the depositing resulting in each of the plurality of vias being completely filled or incompletely filled, performing a chemical mechanical planarization (CMP), and performing metrology to determine if any of the plurality of vias is incompletely filled following the depositing the plating metal. A second iteration of the depositing the plating metal over the plating base is performed in each of the plurality of vias based on determining that at least one of the plurality of vias is incompletely filled.
Public/Granted literature
- US20220013478A1 ITERATIVE FORMATION OF DAMASCENE INTERCONNECTS Public/Granted day:2022-01-13
Information query
IPC分类: