GaInabLE stands for “GaN-InGaN core-shell nanoumbrella-based µ-LEDs”; it is a promising novel technology of µ-LEDs and their arrays for µ-displays suitable for augmented (mixed) reality applications. We believe that by applying our patented restricted area epitaxy approach, we can get advantages of 3D core-shell geometry without sacrificing on emission colour purity, which is essential for light sources to be used as pixels in display technologies.