Method for manufacturing light extraction substrate for organic light-emitting diode, light extraction substrate for organic light-emitting diode, and organic light-emitting diode including same

Abstract

The present invention relates to a method for manufacturing a light extraction substrate for an organic light-emitting diode and, more specifically, to a method for manufacturing a light extraction substrate for an organic light-emitting diode, capable of increasing light extraction efficiency and structural stability of an organic light-emitting diode by improving the dispersibility of light scattering particles, distributed inside a matrix layer, and substrate adhesion. To this end, the present invention provides a method for manufacturing a light extraction substrate for an organic light-emitting diode, the method comprising: a first mixing step of mixing transparent magnetic nanoparticles with a volatile first solution; a second mixing step of mixing, with a second solution including nonmagnetic oxide particles, a mixed liquid formed through the first mixing step and light scattered particles; a coating step of coating a base substrate with a coating solution formed through the second mixing step; and a magnetic field application step of applying a magnetic field to the coating solution side on the lower part of the base substrate so as to magnetically align the transparent magnetic nanoparticles included inside the coating solution.

Dependencies are inferred from the claim text.