Samsung Mobile Display announced a new Joint Venture (50:50) with Japan's Ube Kosan to develop and produce polyimide resin - to be used as substrates for flexible displays (and other applications, too). The initial investment is 19.4 billion won ($18 million USD). The new polyimide material will be heat resistant even at high temperatures. The production facilities will be built in Samsung's industrial complex in Tangjeong, Korea.
Samsung have already demonstrated flexible OLED prototypes built on a polyimide substrate, back in November 2010. According to our information, Samsung plans to start producing flexible OLEDs in 2012 or 2013, and this is one of the first steps they announce towards that goal.