There are rumors that the japanese companies Panasonic and Sharp want to produce large sized OLED panels together in 2014. The goal is to compete against Samsung and LG-Display in 2015.

Sources said that Japan-based makers might have a chance of competing with Korea-based AMOLED makers, despite them having a stronger foothold in the industry, due to the TVs being priced too high, as well as a lack of awareness among the public.

Industry sources have also speculated about whether Taiwan-based manufacturers will be producing large-sized AMOLED panels by 2015, given that they already produce small-and medium-size ones. The manufacturers would have to change their production lines quickly though in order to do so, added sources.
Source

http://www.oled-display.net/panasonic-and-sharp-to-produce-oled-television-devices-in-2014/