The Asus ProArt PQ22UC is a 21.6" 3840x2160 (204 PPI, produced by JOLED) printed OLED monitor that at only 1 Kg is marketed as a "portable" monitor. Features include HDR support, 0.1 ms response time, 10-bit color (99% DCI-P3), USB-C input and micro HDMI.

ASUS ProArt PQ22UC photo

Asus did not yet reveal the price of its first OLED monitor, but it did say it will ship by the spring of 2018.

OLED type: 

21.6" 3840x2160 AMOLED

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters