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  4. Micro to nano - scaling packaging technologies for future microsystems
 
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2008
Conference Paper
Title

Micro to nano - scaling packaging technologies for future microsystems

Abstract
As the development of microelectronics is still driving towards further miniaturization new materials, processes and technologies are crucial for the realization of future cost effective microsystems and components. These future systems will not only consist of SMDs and ICs assembled on a substrate, but will potentially integrate also living cells, organelles, nanocrystals, tubules and other tiny things forming a true Heterogeneous System. Future ICs and passives will also decrease in size, e.g. for RF-ID applications forecast die sizes are smaller than 250 µm, thickness less than 50 µm and pitches way below 100 µm, passives, if not directly integrated into the system carrier, will be even smaller. New placement and joining technologies are demanded for reliable and low cost assembly of such applications, as today's packaging technologies are demanded for reliable and low cost assembly of such applications, as today's packaging technologies only allow the assembly of those small dies and components with a very high effort and for this reason with high cost. With ongoing miniaturization also the protection of the microsystems mostly realized by a polymer needs to be decreased in thickness, yet providing maximum protection. Here besides mechanical stability, humidity barrier functionality is a key factor for system reliability. Fraunhofer IZMs approaches towards packaging technologies facing the demands of future nano-based Hetero System Integration are described within this paper, compromising material and process development. Material developments focus on nano-particle enhanced polymers. One example are materials with optimized humidity barrier functionality, where various filler particle are integrated into a microelectronic grade epoxy resin and investigated regarding their barrier properties. Furthermore, the processing of nano-particle filled polymers is illustrated. Process development compromises touchless handling concepts that are promising for handling miniaturized components, not directly fabricated at the very place where they are needed. Different concepts are under evaluation. Magnetic handling can be regarded as one of the most ripened ones, thanks to the rugged approach explored. Another promising concept is the use of microdroplet manipulation by electrowetting. Results from both concepts show potential for future use. Finally advanced interconnect concepts for low temperature joining by CNT contacts or reactive interconnects are introduced. In summary an overview on nano-based technologies for heterogeneous system integration is given.
Author(s)
Braun, T.
Becker, K.-F.
Bauer, J.
Hausel, F.
Pahl, B.
Wittler, O.
Mrossko, R.
Jung, E.
Ostmann, A.
Koch, M.
Bader, V.
Minge, C.
Aschenbrenner, R.
Reichl, H.
Mainwork
Nanotechnology 2008, NSTI Nanotechnology Conference and Trade Show. Technical Proceedings. Vol.3  
Conference
Nanotechnology Conference and Trade Show (Nanotech) 2008  
Language
English
Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM  
Keyword(s)
  • nanoparticle

  • touchless handling

  • electrowetting

  • heterogeneous integration

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