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Heterogeneous Integration - Packaging on and in Organic Substrates
Keywords: Heterogeneous Integration, Mold Embedding, Chip in Polymer
Decreasing the bill of materials for an electronic device saves development time, money and space. The integration of more and more functions not only on the chip (SoC; system on chip) but also in the package (SiP; system in package) is therefore a natural and very important step in the devolvement of micro electronics. Realizing the goal of Ambient Intelligence requires low cost system solutions where all necessary components are integrated. The future will be a combination of “System on Chip”- and “System in Package” solution called as “Heterogeneous Integration”. As far as tech¬nical and economical feasible “System on Chip” solutions will be chosen, the adoption to various applications and the integration of highly complex systems containing non-electronic functions will be carried out more cost efficiently, with a high degree of miniaturization and flexibility in “Heterogeneous Integration”. “Heterogeneous Integration” integrates several chips or components in one package (system in package or SiP) and carries out the interface to the application environment. This paper will summarize a variety of heterogeneous integration technologies researched at Fraunhofer IZM with a strong focus on embedding in printed circuit boards and embedding in molded reconfigured wafers – looking also on the requirements of sensor packaging. Not only the technological principles but also specific material demands and necessary processes as 3D routing and also 3D interconnection will be discussed in detail. Application examples and technology demonstrators from will be shown to demonstrate technological potential and challenges of miniaturized heterogeneous integration by embedding from a European perspective.
Karl-Friedrich Becker, Group Manager Assembly & Encapsulation
Fraunhofer IZM
Berlin 13355,

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