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. 2015 May 14;6:7149. doi: 10.1038/ncomms8149

Figure 1. Intaglio transfer printing for high-resolution RGB QLEDs.

Figure 1

(a) Schematic illustration of the intaglio transfer printing process. Inset images on the left of each frame show the side view. (b) The PL image of the RGB QD patterns via multiple aligned transfer printings. (c) Magnified views of selected regions of b. Each colour pattern consists of thousands of tens-of-microns-sized pixels (red: triangle (top), green: hexagon (middle) and blue: star (bottom)). Insets show further magnified PL images of pixels. (d) The PL images showing aligned RGB pixels whose resolution is between 441 p.p.i. (left) and 2,460 p.p.i. (right).