Investigation on mechanism of polymer filling in high-aspect-ratio trenches for through-silicon-via (TSV) application
Science China Technological Sciences, ISSN: 1869-1900, Vol: 57, Issue: 8, Page: 1616-1625
2014
- 14Citations
- 9Captures
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Article Description
Vacuum-assisted spin-coating is an effective polymer filling technology for sidewall insulating of through-silicon-via (TSV). This paper investigated the flow mechanism of the vacuum-assisted polymer filling process based on experiments and numerical simulation, and studied the effect of vacuum pressure, viscosity of polymer and aspect-ratio of trench on the filling performance. A 2D axisymmetric model, consisting of polymer partially filled into the trench and void at the bottom of trench, was developed for the computational fluid dynamics (CFD) simulation. The simulation results indicate that the vacuum-assisted polymer filling process goes through four stages, including bubble formation, bubble burst, air elimination and polymer re-filling. Moreover, the simulation results suggest that the pressure significantly affects the bubble formation and the polymer re-filling procedure, and the polymer viscosity and the trench aspect-ratio influence the duration of air elimination. © 2014 Science China Press and Springer-Verlag Berlin Heidelberg.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84906345647&origin=inward; http://dx.doi.org/10.1007/s11431-014-5551-z; http://link.springer.com/10.1007/s11431-014-5551-z; http://link.springer.com/content/pdf/10.1007/s11431-014-5551-z; http://link.springer.com/content/pdf/10.1007/s11431-014-5551-z.pdf; http://link.springer.com/article/10.1007/s11431-014-5551-z/fulltext.html; https://dx.doi.org/10.1007/s11431-014-5551-z; https://link.springer.com/article/10.1007/s11431-014-5551-z
Springer Science and Business Media LLC
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