Fig. 7 | npj Flexible Electronics

Fig. 7

From: Flexible quantum dot light-emitting diodes for next-generation displays

Fig. 7

Wearable quantum dot display. a, b Schematic illustration (a) and energy diagram (b) of the sticker-type top-emission QLED film. c Curved QLEDs on the edge of a thin steel plate (left) and on curvilinear surface of a toy (right). Inset of the left image shows a large-area QLED on a flexible substrate (20 mm × 25 mm). d, e Schematic illustration (d) and cross-sectional SEM image (e) of the tattoo-like wearable QLED. Inset of (e) shows the magnified device structure. f Ultrathin tattoo-like QLEDs laminated on human arm. g Waterproof properties of ultrathin QLEDs. h Ultrathin QLED display (left: rolling, right: crumpling). i Sequential images of the QLED display with different operating voltages. Figure reproduced with permission from: ac ref. 149 © 2014 ACS; dg ref. 99 © 2015 NPG; h, i ref. 51 © 2017 Wiley

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