Light extraction substrate for organic light emitting device, fabrication method therefor and organic light emitting device including same

摘要

The present invention relates to a light extraction substrate for an organic light emitting device, a fabrication method therefor and an organic light emitting device including the same and, more specifically, to a light extraction substrate for an organic light emitting device, a fabrication method therefor and an organic light emitting device including the same, wherein the light extraction substrate has aperiodic photonic crystal patterns formed on the front side thereof, through which light emitted from an organic light emitting element is emitted to the outside, thereby avoiding the dependency of light extraction on a specific wavelength band which occurs in existing periodic photonic crystal patterns, and inducing light extraction from a wider wavelength band. To this end, the present invention provides the light extraction substrate for the organic light emitting device, the fabrication method therefor and the organic light emitting device including the same, wherein the light extraction substrate, which is arranged on one surface through which the light emitted from the organic light emitting element is emitted to the outside, comprises: a base substrate; a matrix layer formed between the organic light emitting element and the base substrate; and the photonic crystal patterns formed on the base substrate, arranged inside the matrix layer and formed to have an aperiodic structure, wherein the matrix layer and the photonic crystal patterns form an internal light extraction layer of the organic light emitting device.

主权项

1. A method of fabricating a light extraction substrate for an organic light-emitting device, the method comprising:
forming a photonic crystal pattern having a non-periodic structure on a base substrate by bar coating while controlling a rolling speed of a rolling bar for the bar coating; and forming a matrix layer such that a surface of the matrix layer adjoining an organic light-emitting diode portion of an organic light-emitting device forms a flat surface and the photonic crystal pattern is positioned inside the matrix layer, wherein the light extraction substrate is disposed on one surface of the organic light-emitting diode portion through which light from the organic light-emitting diode portion is emitted.