More and more smartphones, TVs and wearables like Apple's Watch now use OLED displays, but only two companies mass produce them -- Samsung and LG. LG is trying to stay on top of demand by building a new 1.05 trillion won ($900 million) flexible OLED plant in Korea. Starting in 2017, the 6th-gen line will spit out four times as many screens as the current-gen plant thanks to a larger "substrate" sheet size. The plastic-based displays are aimed at smaller next-gen devices that can benefit from the bendability like automotive displays, cellphones and wearables.