- 专利标题: Stacked via structure for metal fuse applications
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申请号: US13074407申请日: 2011-03-29
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公开(公告)号: US08633707B2公开(公告)日: 2014-01-21
- 发明人: Ronald G. Filippi , Griselda Bonilla , Kaushik Chanda , Stephan Grunow , Naftali E. Lustig , Andrew H. Simon , Ping-Chuan Wang
- 申请人: Ronald G. Filippi , Griselda Bonilla , Kaushik Chanda , Stephan Grunow , Naftali E. Lustig , Andrew H. Simon , Ping-Chuan Wang
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 L. Jeffrey Kelly; Catherine Ivers
- 主分类号: G01R31/07
- IPC分类号: G01R31/07
摘要:
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.
公开/授权文献
- US20120249159A1 Stacked Via Structure For Metal Fuse Applications 公开/授权日:2012-10-04
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