Patent ID: 9048456
Filing Date: 2015-06-02
Classification: H01L

Abstract:
1. An organic light-emitting diode comprising a first sub-pixel, a second sub-pixel and a third sub-pixel of different colors, the organic light-emitting diode comprising: a substrate; a first electrode on the substrate; a second electrode on the first electrode and facing the first electrode; an organic emission layer between the first electrode and the second electrode, the organic emission layer comprising a first organic emission layer in the first sub-pixel, a second organic emission layer in the second sub-pixel, and a third organic emission layer as a common layer in the first, second and third sub-pixels, a hole transport layer between the first electrode and the organic emission layer; a hole injection layer between the first electrode and the hole transport layer; an intermediate layer between the hole transport layer and the hole injection layer; a first optical thickness auxiliary layer between the first organic emission layer and the third organic emission layer in the first sub-pixel and comprising a first hole transporting compound and a cyano group-containing compound; and a second optical thickness auxiliary layer comprising a second hole transporting compound between the third organic emission layer and the hole transport layer in the first sub-pixel, and between the second organic emission layer and the hole transport layer in the second sub-pixel; wherein the cyano group-containing compound comprises at least one compound represented by Formulae 1 through 20: wherein: each of X L