Testing of Interposer-Based 2.5D Integrated Circuits

Ran Wang is a Senior DFT Engineer at NVIDIA in Santa Clara, CA. Dr. Wang received the B. Sci. degree from Zhejiang University, Hangzhou, China, in 2012, and the M.S.E and Ph.D degree from the Department of Electrical and Computer Engineering, Duke University in 2014 and 2016. His current research interests include testing and design-for-testability of 2.5D ICs and 3D ICs.Krishnendu Chakrabarty is the William H. Younger Distinguished Professor of Engineering in the Department of Electrical and Computer Engineering at Duke University in Durham, NC.  He has been at Duke University since 1998. His current research is focused on: testing and design-for-testability of integrated circuits (especially 3D and multicore chips); digital microfluidics, biochips, and cyberphysical systems; optimization of digital print and production system infrastructure. His research projects in the recent past have also included chip cooling using digital microfluidics, wireless sensor networks, and real-time embedded systems. Prof. Chakrabarty received the B. Tech. degree from the Indian Institute of Technology, Kharagpur, India in 1990, and the M.S.E. and Ph.D. degrees from the University of Michigan, Ann Arbor in 1992 and 1995, respectively. He is a Fellow of ACM, a Fellow of IEEE, and a Golden Core Member of the IEEE Computer Society.Prof. Chakrabarty is a recipient of the National Science Foundation CAREER award, the Office of Naval Research Young Investigator award, the Humboldt Research Award from the Alexander von Humboldt Foundation, Germany, the IEEE Transactions on CAD Donald O. Pederson Best Paper award, and 12 best paper awards at major conferences.  He is also a recipient of the IEEE Computer Society Technical Achievement Award and the Distinguished Alumnus Award from the Indian Institute of Technology, Kharagpur. He is a Research Ambassador of the University of Bremen (Germany) and a Hans Fischer Senior Fellow at the Institute for Advanced Study, Technical University of Munich, Germany. He has held Visiting Professor positions at University of Tokyo and the Nara Institute of Science and Technology (as an Invitational Fellow of the Japan Society for the Promotion of Science) in Japan, and Visiting Chair Professor positions at Tsinghua University (Beijing, China) and National Cheng Kung University (Tainan, Taiwan).

• Introduction.- Pre-Bond Testing of the Silicon Interposer.- Post-Bond Scan-based Testing of Interposer Interconnects.- Test Architecture and Test-Path Scheduling.- Built-In Self-Test.- ExTest Scheduling and Optimization.- A Programmable Method for Low-Power Scan Shift in SoC Dies.- Conclusions.-