Scalable OLED Liquid Printing Process Designed to Reduce Costs
Display manufacturers can now deliver superior OLED device performance With lower manufacturing costs for large-format displays
Unlike OLED technology that uses thermal evaporation and fine-metal masks to deposit emissive materials, DuPont has developed a liquid printing process that enables higher material utilization, can be scaled to any size motherglass and helps eliminate the need for fine-metal shadow masks, which can be costly and must be cleaned, inspected and replaced.
With the DuPont low-cost, liquid printing process technology, non-patterned OLED layers can be deposited using existing slot-die coating technology and patterned layers are deposited using a high-speed printer developed specifically for printing OLEDs.
The simple control requirements of this equipment allow excellent uniformity to be achieved. Deposited volume is dependent only on flow rate—which is held constant—and speed, which are both readily controllable.