Researchers at Julius-Maximilians-Universität Würzburg have developed the world's smallest pixel, measuring just 300 nanometers, which could enable the creation of a 1mm 1080p display. This breakthrough in organic LED technology could lead to ultra-compact displays for devices like augmented reality headsets, though current efficiency remains low at just one percent. Future work will focus on expanding the color gamut and improving efficiency for practical applications.