Patent ID: 9224966
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. An organic light-emitting device comprising: a substrate; a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and an electron transport layer between the emission layer and the second electrode, wherein: the emission layer comprises a blue emission layer, the electron transport layer comprises a unit comprising a first single layer including a first material, a first mixed layer on the first single layer and including the first material and a second material, a second single layer on the first mixed layer and including the second material, a second mixed layer on the second single layer and including the first and second materials, and a third single layer on the second mixed layer and including the first material, wherein the first mixed layer has a thickness larger than that of the second mixed layer, and wherein the first material comprises at least one selected from the group consisting of a 9,10-diaryl-anthracene-based material, a compound represented by Formula 1 below, and a compound represented by Formula 2 below: wherein, in Formulae 1 and 2, R L Q a is an integer from 1 to 10.