On the multiscale finite element analysis for interfacial fracture in CU/low-k interconnects

Tz-Cheng Chiu, Huang Chun Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The interface crack problem in integrated circuit devices was considered by using global and local modeling approach. In the global analysis the thin film interconnect was modeled by a homogenized layer with material constants obtained from representative volume element (RVE) analysis. Local analyses were then considered to determine fracture mechanics parameters. It was shown that the multiscale model with RVE approach gives accurate fracture mechanics parameters for an interface crack under either thermal or mechanical loads; while significant error was observed when the thin film layers are ignored in the global analysis. The problem of an interface crack between low-k dielectric and etch-stop thin film in a flip-chip package under thermal loading was also investigated as an application example of the multiscale modeling.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME InterPack Conference, IPACK 2007
Number of pages7
Publication statusPublished - 2007
EventASME Electronic and Photonics Packaging Division - Vancouver, BC, United States
Duration: 2007 Jul 82007 Jul 12


OtherASME Electronic and Photonics Packaging Division
Country/TerritoryUnited States
CityVancouver, BC

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Information Systems


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