Since early in 2013, we've been hearing reports that Sony (and Panasonic) are talking to LG Display about buying OLED TV panels. Today, Sony's TV chief Immamura said that he "can't say Sony wouldn't use OLED technology" in their TVs. He would not say whether LG Display will indeed be Sony's OLED TV supplier, but there isn't any other option really as LGD is the only company offering OLED TV panels.
Immamura did say that Sony has no current plans to invest in any OLED (or LCD) factory. Sony's OLED TV joint venture with Panasonic was cancelled in December 2013. And since then it was reported that Sony is withdrawing from the OLED market, but this was later denied by Sony.