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Stretchable LED array. (a) LED array mounted on a TPU substrate using stretchable electrode. (b) Cross-sectional diagram of LED array. (c) LED array under 0%-25% tensile strain.
Source publication
Wearable devices with excellent mechanical stretchability, comparable to that of human skin, are highly desirable for preventing discomfort and dermatitis. Composite material systems that use metal particles and elastomers are promising for realizing intrinsic stretchable electrodes with high conductivity and enhancing mechanical flexibility of wea...
Contexts in source publication
Context 1
... increased electrode resistance affected the current-driven devices. Figure 6(a) displays an LED array constructed using an all-printing stretchable PCB with the proposed electrode [32]. Substrates encapsulating stiffeners were prepared by printing epoxy resin (stiffener) on a PU substrate. ...
Context 2
... the substrates were laminated. Stretchable electrodes and an insulating layer were printed on the substrate to prevent electrical shorts at electrode intersections, and the LED array was completed by performing LED chip mounting ( figure 6(b)). The LED array remained illuminated even under 25% strain elongation (figure 6(c)); however, some LEDs were turned off during stretching at 25% strain. ...
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Citations
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