Patent ID: 10026931

Abstract:
A method of manufacturing a white organic light-emitting device (white OLED) including a first electrode, a hole transport layer, a white light-emitting layer, an electron transport layer, and a second electrode which are sequentially formed on a substrate, the method including manufacturing a red ink by mixing a red light-emitting host and a red light-emitting dopant, manufacturing a green ink by mixing a green light-emitting host and a green light-emitting dopant, manufacturing a blue ink by mixing a blue light-emitting host and a blue light-emitting dopant, and forming a white light-emitting layer as a monolayer on the hole transport layer by separately electrospraying the red ink, the green ink, and the blue ink on the hole transport layer, wherein the white light-emitting layer includes a plurality of red light-emitting domains, a plurality of green light-emitting domains, and a plurality of blue light-emitting domains on the hole transport layer.