In the field of OLED panels, Korean factories LG Display and Samsung Display have absolute dominance, and mainland Chinese panel manufacturers have also been striving to deploy OLED technology in recent years. At present, the mainland panel factory BOE has the ability to produce small-size flexible OLED panels. Huaxing Optoelectronics is also actively developing related technologies for OLED panel production. However, there are still many problems to be solved for mass production of large-size OLED panels.

At present, LG Display uses the evaporation process to mass-produce large-size OLED panels

Previously, BOE and Huaxing Optoelectronics have deployed large-scale OLED technology research and development test lines, all using inkjet printing process technology, which does not require evaporation of organic matter, but directly printed on the substrate, the process is relatively simple, and the material consumption is less . However, the inkjet printing technology is not yet mature and has not yet been applied to actual mass production.

Printing OLED technology is not yet mature

For mass production of large-size OLED panels, LG Display uses vapor deposition WOLED technology, which is currently the only technology on the market that has passed mass production testing and has high stability. In addition, Samsung is also researching and developing QD-OLED technology, which has also added trouble to China's mass production of large-size OLED panels. It is becoming more and more difficult to catch up with LG and Samsung in technology and narrow the technology gap.

Huaxing Optoelectronics also recently announced that the 10.5 generation line (T7) target mass production of large-size OLED panels will be mass-produced by the inkjet printing process, but it will be put into production in 2021. The 31-inch OLED samples of the ink printing process are manufactured, but at the same time, Huaxing Optoelectronics does not rule out the possibility of using WOLED and QD-OLED.

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