Organic light-emitting element including a conductive pattern which passes through an organic material layer to connect to an external terminal of a second electrode
The present invention relates to an organic light-emitting element and a production method thereof. Specifically, the present invention relates to an organic light-emitting element, which has excellent productivity during mass production thereof and may allow simplification of vapor deposition equipment, and the like, and a production method thereof.
1. An organic light-emitting element having a structure in which a first electrode, an organic material layer, a second electrode are sequentially stacked on a substrate, an external terminal of the second electrode provided to be insulated from the first electrode on the substrate, and a conductive pattern that electrically connects the second electrode with the external terminal of the second electrode,
wherein a shape of the second electrode is the same as that of the organic material layer,
wherein an upper side area of the second electrode is the same as that of the organic material layer or has a size difference from that of the organic material layer in a range within 10%,
wherein the conductive pattern has a structure in which the conductive pattern passes through the organic material layer from a top surface of the external terminal of the second electrode to be brought into contact with the second electrode or pass through the second electrode, and the conductive pattern is disposed inside the organic material layer such that it is completely surrounded by the organic material layer in a plan view, and
wherein the first electrode and the external terminal of the second electrode are directly provided on the same surface of the substrate.
2. The organic light-emitting element of claim 1 , wherein the upper side area of the second electrode is the same as that of the organic material layer.
3. The organic light-emitting element of claim 1 , wherein a maximum angle between a side surface shape of the conductive pattern and the top surface of the external terminal of the second electrode is 40° or more.
4. The organic light-emitting element of claim 1 , wherein a height of the conductive pattern is twice or more than a thickness of the organic material layer.
5. The organic light-emitting element of claim 1 , wherein an insulating layer is provided between the first electrode and the external terminal of the second electrode.
6. The organic light-emitting element of claim 1 , wherein an insulating layer is additionally provided on at least a portion of an outermost part of a region in which the organic material layer is brought into contact with the first electrode.
7. The organic light-emitting element of claim 1 is for illumination.