PM OLED fabrication with new method of metal cathode deposition using shadow mask

1.52" 130(RGB) × 130 full color PM OLED device with 70 μm×210 μm of sub-pixel pitch was fabricated using shadow mask method for metal cathode deposition. Instead of conventional patterning process to form cathode separator via photolithography, regularly patterned shadow mask was applied to deposit metal cathode in this OLED display. Metal cathode was patterned via 2-step evaporation using shadow mask with shape of rectangular stripe and its …