| 摘要 |
The present invention relates to an organic light emitting diode, and more specifically, to an organic light emitting diode capable of significantly increasing light extraction efficiency through optimization of a corrugated structure, which is formed by being transferred from an inner light extraction layer, thereby enabling excellent light-emitting efficiency. To this end, the present invention provides an organic light emitting diode which includes: a first substrate; an inner light emitting layer formed on the first substrate; a first electrode formed on the inner light emitting layer; an organic light emitting layer formed on the first electrode; and a second electrode formed on the organic light emitting layer. Corrugation is formed on the surface of the inner light emitting layer, wherein the corrugation is sequentially transferred onto the first electrode, the organic light emitting layer, and the second electrode. The surface of the second electrode comprises the corrugated structure, wherein the corrugated structure comprises a plurality of convex portions and a plurality of concave portions, which are formed between the convex portions that are adjacent. A depth/pitch ratio of the pitch between the convex portions that are adjacent to the depth of the concave portions is 0.1 to 7. |
