Two weeks ago LG announced it has developed 18" rollable OLEDs and 18" transparent OLEDs, showing photos of two prototypes. LG now quietly released videos showing those amazing new displays, the largest ever flexible and transparent OLEDs.
The flexible OLED has of 1200x810 (80 PPI), and a curvature radius of 30R. As you can see it really can be rolled up (to a radius of 3 cm). We don't have a lot of technical details on the transparent panel, besides the fact that its transmittance is 30%.
§Read more about LG's 18" flexible and transparent OLED panels on video