LG Electronics installed a beautiful flexible curved OLED signage installation at Korea's Incheon Airport.:

Curved OLED signage installation, Incheon Airport Terminal 2 photo

LG has a long history of OLED installations at Incheon airport. In November 2015 LG installed a huge 13x8 meter OLED signage display made from 140 55" 4K OLED TV (a total of 290 million pixels). That was the world's largest OLED display at the time.

LG 13x8m OLED installation Incheon airport

In 2018 LG installed 69 OLED TVs at Incheon, including at the Korean Air Miler Club Lounge, but it was later reported that some of these TVs were replaced with LCDs due to to serious permanent image-retention problems.

Atomic Force Microscopy for next-gen OLED processesAtomic Force Microscopy for next-gen OLED processes