Patent ID: 8828760

Claim:
A method of fabricating an organic light emitting device, comprising: providing a substrate; coating a precursor layer on the substrate; sequentially forming a metal layer and an organic layer in that stated order on the precursor layer; performing a heat treatment of the organic layer to form an irregularly patterned organic mask from the organic layer, during the heat treatment, the precursor layer, the metal layer and the organic layer are all disposed on the substrate, the heat treatment being performed at a temperature ranging from room temperature to 250 degrees Celsius so as to dewet the organic layer thereby forming the irregularly patterned organic mask; patterning the metal layer by using the organic mask to form a metal mask; patterning the precursor layer by using the metal mask to form a light scattering layer having an irregular, random structure; removing both of the metal mask and the organic mask; and sequentially stacking a planarization layer, a first electrode, an organic light emitting layer, a second electrode, and a passivation layer in that stated order on the light scattering layer.