In 2012 it was a flexible e-ink display. In 2013 it was the slightly flexible OLED display used in the G Flex smartphone. And now in 2014 LG has produced a massive, 18-inch OLED display that can be rolled up into a tight cylinder with a radius of just 3 centimeters (1.2 inches). In addition, LG has also announced an 18-inch OLED display that is highly transparent. By 2017, LG thinks it can combine both of these prototypes to create a 60-inch, UHD (4K) display that is both flexible and transp...