Enlarge / Like a Tandem bicycle, Tandem OLED doubles certain components for exciting momentum. (credit: Aurich Lawson | Getty Images) Tandem OLED has been around for years, but Apple made the technology feel new and shiny when it announced that the screen in its first ever OLED-based iPad would use a tandem structure. Other consumer gadgets, like laptops and phones, are also slowly starting to incorporate Tandem OLED displays.