Cyclic endurance reliability of stretchable electronic substrates

Plastic electronics based conformable electronic circuits

“…This for bare copper meanders [6] and for polyimide supported copper tracks [7]. In previous publications, we demonstrated that mechanical support for the meanders improves their lifetime significantly.…”

“…In [5][6][7][8], the Stretchable Molded Interconnect technology has been proposed to realize a stretchable circuit (SMI-technology). Compared to traditional printed circuit boards (PCBs) or flexible circuit boards (FCBs), the SMI technology pushes the conformability of electronic circuitry to a higher level, by allowing it to stretch in different directions.…”

“…Testvehicles as shown in Figure 3 have been made with variation in meander track width (wide tracks: ~230 µm, narrow tracks: 100 µm). The meander is a horseshoe as defined in [6] with a meander angle of 30 o . In the testvehicles, the copper meander is supported by a laserstructured foil where the supporting foil type is PET, PEN or PI.…”

“…In the last decade, a high number of technologies to realize conformable electronic systems have been developed by a number of research institutes [1][2][3][4][5][6][7][8]. A wide variety of different processes exists nowadays to realize such systems, where each technology has its own particular characteristics and targeted application fields.…”

Printed circuit board technology inspired stretchable circuits

“…In order to build PCB-style stretchable circuits, two main approaches are followed 7 in currently ongoing research: • The fi rst approach is the one where the starting material for the circuit is a stretchable carrier, laminated on top of a copper conductor sheet. The electrical circuit is then fabricated by fi rst patterning and wet etching the copper, followed by assembly of the components.…”