Project STELLA - Stretchable Electronics for Large Area Applications

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Direct skin contact of body sensor systems allows for full measurement capabilities, but wearing comfort requires that the monitor will not only be flexible, but also of stretchable and soft-touch nature. In the STELLA project [1] the development of such stretchable and soft-touch substrates, including assembly with electronic devices on these substrates is proposed.

Processes will be developed to produce a stretchable conductive pattern that can be composed of printed wiring, discrete wiring, or a combination thereof formed in a predetermined arrangement on a stretchable common base substrate. The soft-touch will be achieved by using base materials with a different chemistry than what is used today for flex substrates.


Bendable Electronics Substrates
Crumple Wiring

Assembly methods for component mounting and interconnection, based on existing platform techniques, will have to be adapted.

The STELLA project which finishes in Jan 2010, promises to make breakthroughs in three distinct areas;

  • 1.New stretchable substrates with stretchable conductor patterns
  • 2.Assembly technology on stretchable substrates, based on lead-free reflow soldering
  • 3.Integration methods for electronics in stretchable products

References

  1. http://www.stella-project.eu




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