Vertical multicolored micro-LED allows smaller pixels and higher pixel density. Upright position: vertical pixels A project at MIT has developed a possible new route to sharper defect-free displays, by stacking the light emitting diodes into vertical multicolored pixels. Although the size of conventional LED pixels has been consistently reduced over recent years, they are reaching a point where the small size can affect their performance, according to MIT. This is particularly true for displays designed to sit close to the viewer's eyes, such as those in aug...