Mr. Curtis Zwenger



Mr. Curtis Zwenger

Vice President

Advanced Package & Technology Integration

Amkor Technology


  • Master of Business Administration

  • Bachelor of Science in Mechanical Engineering


  • 18 years Amkor R&D and Product Management

  • 25 years in the semiconductor packaging industry

  • IWLPC General Chair 2016 & 2017

  • 15 industry patents, 18 publications



  • The tremendous growth in the mobile handset, tablet and networking markets has been fueled by consumer demand for increased mobility, functionality and ease of use.  This, in turn, has been driving an increase in functional convergence and heterogeneous integration of IC devices, resulting in the need for more complex and sophisticated packaging techniques.  A variety of advanced IC interconnect technologies are addressing this growing need.  These include Through Silicon Via (TSV), Chip-on Chip (CoC), and Package-on-Package (PoP) approaches.  In particular, emerging Wafer Level Fan-Out (WLFO) technology provides unique and innovative extensions into the advanced packaging realm.

  • Traditional WLFO technologies are limited in design rules and integration capabilities due to the processes and equipment used for circuit patterning.  For more aggressive designs, TSV processes must be incorporated, which often exceed the cost budget and design requirements needed for the device. Consequently, a gap exists between the design capabilities of WLFO and TSV that needs to be addressed.

  • Amkor’s innovative fan-out structure called Silicon Wafer Integrated Fan-out Technology (SWIFT®) incorporates conventional WLFO processes with leading-edge thin film patterning techniques to bridge the gap between TSV and traditional WLFO packages.  The SWIFT methodology is designed to provide increased I/O and circuit density within a reduced footprint and profile for single and multi-die applications.  The improved design capability of the technology is due, in part, to the fine feature capabilities associated with this new, innovative wafer-level packaging technique.  The fine feature capabilities can allow much more aggressive design rules to be applied compared to competing WLFO and laminate-based technologies.  In addition, the unique characteristics of the SWIFT process enable the creation of innovative structures that address the need for IC integration in emerging mobile and networking applications.  

  • This presentation will review the development of the SWIFT technology and its extension into high performance 2D and 3D structures.  In addition, the advantages of SWIFT designs will be reviewed in comparison to current competing packaging technologies. Process information, design simulation, and product reliability data will be presented to show how the SWIFT process is poised to provide robust, reliable, and low-cost packaging solutions for advanced mobile and networking products.

  • SWIFT is a registered trademark of Amkor Technology, Inc.





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