Session 13: Substrates
Research and Testing of Electronic Materials Made with a Novel Non-Silicone Stretchable Thermosetting Polymer
Wednesday, June 21, 2017
1:55 PM - 2:15 PM
New classes of stretchable materials will enable the next wave of flexible electronics. Device manufacturers are seeking alternative methods for creating circuitry that are more conformable, elastic and durable than those available using current polymer systems.
Researchers from Panasonic Electronic Materials are developing a proprietary non-silicone thermosetting stretchable polymer technology which may address many of the challenges associated with current stretchable thermoplastic and thermosetting polymer materials. This resin has been used as the base for several developmental embodiments including a stretchable film which exhibits some unique and attractive properties.
The film has good elongation properties and can be stretched up to 170 %. The current version exhibits a stress relaxation value in excess of 60% (at 50% elongation) which may be attractive for epidermal devices where skin comfort is a design priority. The polymer also exhibits very low hysteresis (well under 1%) meaning that it incurs practically no permanent deformation after elongation. It also has a high temperature resistance. The film does not degrade even after immersion in liquid solder at 260°C. Encapsulated constructions have been made by laminating b-staged film over circuits, components and other features. The material can be selectively ablated using conventional lasers. The combination of the film’s temperature resistance and high surface energy, it may be possible metalize the surface and mount components using conventional reflow soldering materials and processes. This paper provides details on the technology development and applications research being conducted with this new polymer.
Tomoaki Sawada is an Engineering Manager with Panasonic Automotive and Industrial Systems located in Kadoma Japan. He graduated from the University of Osaka with a Masters in Ceramic Materials Engineering. Tomoaki has been with Panasonic for 12 years. His experience includes product development and manufacturing technology roles for a variety of electronic material technologies including bonding films, circuit board laminates and thermally conductive products. Currently, Tomoaki is the project leader for Panasonic’s stretchable materials development program.
Panasonic Automotive and Industrial Systems