Patent ID: 8829785

Claim:
An organic EL device, comprising: a light-transmitting substrate; a light-transmitting first electrode layer arranged on the substrate; three or more light-emitting units layered and arranged on the first electrode layer, each of the light-emitting units including a central organic emission layer, a hole transfer layer and an electron transfer layer; a plurality of charge generation layers, each of the charge generation layers being interposed and arranged between two corresponding adjacent ones of the light-emitting units; and a second electrode layer arranged on the light-emitting unit positioned highest in a layering direction among the light-emitting units, the total thickness of the layers interposed between the first electrode layer and the second electrode layer being 360 nm or less, wherein the three or more units include: a first light-emitting unit adjoining the second electrode layer and having a first organic emission layer, the distance from the second electrode layer to the center of the first organic emission layer of the first light-emitting, unit being from 30 nm to 90 nm; a second light-emitting unit adjoining the first light-emitting unit and having a second organic emission layer, the distance from the second electrode layer to the center of the second organic emission layer of the second light-emitting unit being from 195 nm to 255 nm; and a third light-emitting unit adjoining the second light-emitting unit and having a third organic emission layer, the distance from the second electrode layer to the center of the third organic emission layer of the third light-emitting unit being from 245 nm to 305 nm.