P‐178: A 1.52‐in. Full‐Color Passive‐Matrix OLED with Nitrogen Plasma Treatments

Abstract Full color 1.52″ 130×130 PM OLED display was fabricated with treatment of nitrogen plasma. The work function of ITO before plasma treatment was 4.81eV while it changed 4.99∼5.02eV after nitrogen plasma treatment. After the plasma treatment, we prepare a full color passive matrix OLED device with structure of ITO/2‐TNATA/α‐NPD/Alq3: DJCTB, Alq3: C545T, DPVBi/BAlq/Alq3/LiF/Al: Li. The lifetime of OLED devices using nitrogen plasma treatment is 1.5 times better than that using oxygen plasma treatment as well as low process cost in the same layer structure of OLED devices.