Mitsubishi showcased a   “Diamond Vision OLED”, semi-spherical display. At CEATEC 2011.
Its diameter is 2,700mm, and the thickness of its convex part is 680mm.

This new model consists of a total of  696 OLED panels, each sized at 32 x 32mm. Sized at 96 x 96mm, the OLEDs forming the aforementioned globe are considerably larger, but the panels share the same pixel pitch (3mm). The OLED display has a brightness of 1,200 cd/m² and consumes 11.2 kW power. Mitsubishi want to introduce that kind of product for the digital signage market. (Source OLED-display.net)