Now that the first flexible display phone panels are official from both LG and Samsung, let's examine what they are going to bring to smartphones like the LG G Flex and the Galaxy Round, or, eventually, tablets down the road. One of the big promises of the OLED screen technologies was precisely the fact that they don't need backlighting like the LCD ones, and can be laid on a plastic, instead of a glass substrate. That's where the "bendable" and "unbreakable" adjectives in the flexible display description come from - since it is essentially a ziplock bag of sorts, the whole panel can fold to a certain extent. One of the big promises of the OLED screen technologies was precisely the fact that they don't need backlighting like the LCD ones, and can be laid on a plastic, instead of a glass substrate...
Source: http://www.phonearena.com/news/Whats-in-it-for-me-Flexible-OLED-display-phones-explained_id48047
Source: http://www.phonearena.com/news/Whats-in-it-for-me-Flexible-OLED-display-phones-explained_id48047