Science Daily  September 27, 2021 Researchers in South Korea have demonstrated that 3D foldable quantum dot light-emitting diodes (QLEDs) can be created using laser patterning and metal etch-stop layers with customized ablation thresholds. The approach allows etching to be limited to selected layers of the multilayered QLEDs, and it can be precisely tuned by using alloy-type etch-stop layers. The approach can be used to create QLED architectures with extremely small bending radii (0.047 mm). They have illustrated its capabilities by fabricating a 3D foldable passive matrix array of QLEDs that can display letters and numbers. The entire QLED including the crease […]