Invention Grant
- Patent Title: Stacked via structure for metal fuse applications
- Patent Title (中): 金属保险丝应用的堆叠通孔结构
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Application No.: US14040945Application Date: 2013-09-30
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Publication No.: US08742766B2Publication Date: 2014-06-03
- Inventor: Griselda Bonilla , Kaushik Chanda , Ronald G. Filippi , Stephan Grunow , Naftali E. Lustig , Andrew H. Simon , Ping-Chuan Wang
- 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
- Agent L. Jeffrey Kelly; Catherine Ivers
- Main IPC: G01R31/02
- IPC: G01R31/02

Abstract:
A back end of the line (BEOL) fuse structure having a stack of vias. The stacking of vias leads to high aspect ratios making liner and seed coverage inside the vias poorer. The weakness of the liner and seed layers leads to a higher probability of electromigration (EM) failure. The fuse structure addresses failures due to poor liner and seed coverage. Design features permit determining where failures occur, determining the extent of the damaged region after fuse programming and preventing further propagation of the damaged dielectric region.
Public/Granted literature
- US20140028325A1 STACKED VIA STRUCTURE FOR METAL FUSE APPLICATIONS Public/Granted day:2014-01-30
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