OLED technology has developed rapidly and has been widely used in small and medium size displays. At the same time， industry is waiting for large-size OLED display for high-end TV. Printed OLED has obvious advantages in the field of flexibility and high PPI， and printed QLED could further strengthen the advantages of printed display technology in color gamut， life time and cost. At present， the key elements such as technology， materials and equipment have gradually matured， and the prelude to the industrialization of printed display in China has opened up. In response to this trend， building China's printed display industry chain， especially the localization of OLED/QLED materials， inks and related equipments， is an important guarantee for the success of China's printed display industry， which requires extensive cooperation among academia， industry and the industry chain.