The development of full-colour, high-resolution wearable displays is hindered by technical challenges in producing efficient, polychromatic, deformable light-emitting diodes (LEDs) as pixels. Conventional printing techniques for LEDs based on colloidal quantum dots do not achieve the required precision for full-colour displays in the alignment of red–green–blue (RGB) subpixels, and lack fidelity in pixel shapes to enable high resolution. Now, Taeghwan Hyeon, Dae-Hyeong Kim and colleagues have used an intaglio transfer printing method for quantum dots in order to fabricate arrays of wearable RGB p… http://www.nature.com/nnano/journal/v10/n7/full/nnano.2015.150.html
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