A Novel TSV Probing Technique With Adhesive Test Interposer
Refereed conference paper presented and published in conference proceedings

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AbstractTSVs can be fabricated with pitch of only tens of mu m, and smaller. They can be densely distributed as inter-die interconnect in 3D ICs. However, the huge mismatch between the probe technology, such as the pitch of probe head and the capacity of probe card, and the TSV fabrication technology leads to an insufficient probe on TSV tips. In this paper, we present a novel TSV probing technique that can temporally bond pre-bond die to test interposer using anisotropic conductive adhesive material. On the two sides of the test interposer, TSVs and probe heads make contact with microbumps and C4-bumps, respectively. These two types of bumps are connected using redistribution metal layers, passing through the test interposer, which can bridge the gap between feature sizes of TSVs and probe head. This probing technology is also able to increase the test bandwidth by enlarging the test interposer and redistributing test signals between microbumps and C4-bumps. Moreover, the number of probe-card touchdown can be reduced by sharing the test interposer among multiple dies during the wafer-level testing. Simulation results on the corresponding test structures for TSVs open fault and leakage fault show the great test resolution and robustness considering different design choices and variable design parameters among the test structures.
All Author(s) ListJiang L, Huang XW, Xie HF, Xu Q, Li C, Liang XY, Li HY
Name of Conference33rd IEEE International Conference on Computer Design (ICCD)
Start Date of Conference18/10/2015
End Date of Conference21/10/2015
Place of ConferenceNew York
Country/Region of ConferenceUnited States of America
Detailed descriptionorganized by IEEE,
Pages597 - 604
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesComputer Science; Computer Science, Hardware & Architecture; Engineering; Engineering, Electrical & Electronic

Last updated on 2020-22-05 at 23:54