Invention Grant
- Patent Title: BEOL integration with advanced interconnects
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Application No.: US15826393Application Date: 2017-11-29
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Publication No.: US10541199B2Publication Date: 2020-01-21
- Inventor: Chih-Chao Yang
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Alvin Borromeo, Esq.
- Main IPC: H01L23/522
- IPC: H01L23/522 ; H01L23/532 ; H01L23/528 ; H01L21/768

Abstract:
An alloy liner is located on a diffusion barrier liner and both are present in at least a via portion of a combined via/line opening that is present in an interconnect dielectric material. The alloy liner includes an alloy of a first metal or metal alloy having a first bulk resistivity and a second metal or metal alloy having a second bulk resistivity that is higher than the first bulk resistivity. A first electrically conductive structure is located on the alloy liner and is present in at least the via portion of the combined via/line opening. The first electrically conductive structure includes the second metal or metal alloy. A second electrically conductive structure can be present in at least the line portion of the combined via/line opening. The second electrically conductive structure may include a metal or metal alloy having the first or second bulk resistivity.
Public/Granted literature
- US20190164885A1 BEOL INTEGRATION WITH ADVANCED INTERCONNECTS Public/Granted day:2019-05-30
Information query
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