Patent ID: 9515290
Filing Date: 2016-12-06
CPC Classification: H01L

Claim Text:
1. An organic light emitting display device, comprising: a substrate; a thin film transistor on the substrate; an organic light emitting element including a first electrode connected to the thin film transistor, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer; and a pixel definition film disposed on the substrate to expose a part of the first electrode, wherein the pixel definition film includes nanoparticles that change a path of light emitted from the organic light emitting layer, and wherein a distribution of the nanoparticles is set depending on an inclination angle of the pixel definition film, such that: when the inclination angle of the pixel definition film is equal to or smaller than 35 degrees, the nanoparticles are dispersed on the pixel definition film and neighboring an interface between the pixel definition film and one or more of the first electrode, the organic light emitting layer, or the second electrode, and when the inclination angle of the pixel definition film is larger than 35 degrees, the nanoparticles are uniformly dispersed within the pixel definition film.