You'll have to wait a while longer for this emerging technology, but perhaps not too long. Both LG Display and Samsung have demoed flexible organic light-emitting diode (OLED) displays for mobile devices. The potential benefits include thinner, lighter and more malleable screens for smartphones and tablets. This in turn might spur development of more durable devices or devices with bendable, curved or foldable screens. LG said in April that it plans to unveil a smartphone with a flexible screen in the fourth quarter of 2013. Tablets that can fold or that have roll-up screens might not be far behind.