February 1, 2023 Stacking LEDs instead of placing them side by side could enable fully immersive virtual reality displays type='text/javascript'> googletag. But micro-LED fabrication requires extreme accuracy, as microscopic pixels of red, green, and blue need to first be grown separately on wafers, then precisely placed on a plate, in exact alignment with each other in order to properly reflect and produce various colors and shades. They will work toward making an array of many vertical micro-LED pixels