LG Display announced that it has developed a 77" flexible and transparent OLED display. The display features a resolution of 4K/UHD (3840 x 2160), a 80 mm radius of curvature and 40% transparency.
LG Display demonstrated two possible applications for this display - above you can see the "smart desk" demonstration, and below you can see a commercial retail demonstration. It is not clear from the press release, but it seems that LGD plans to commercialize such a display in the future.
This is the final step in a project that was granted to LGD back in 2012 to develop a large flexible and transparent OLED display. Interestingly, the project goal was to develop a 60" 4K flexible and transparent OLED by 2017 - and LG actually made an even larger display than originally planned.