Organic light emitting device, display apparatus and illumination apparatus comprising the organic light emitting device, and method for preparing the same

1. An organic light emitting device comprising an organic light emitting unit having a structure in which a substrate, a first electrode, an organic material layer, and a second electrode are sequentially laminated,

wherein the organic light emitting device comprises an auxiliary electrode and a fuse pattern;

wherein the first electrode and the auxiliary electrode are electrically connected to each other through the fuse pattern;

wherein the auxiliary electrode comprises one or more selected from the group consisting of Cr, Mo, Al, Cu, and an alloy thereof; and

wherein the fuse pattern comprises one or more selected from a group consisting of indium tin oxide (ITO), IZO, ZnO, SnO 2 , Ca, Mg, and indium.

2. The organic light emitting device of claim 1 , wherein the substrate is selected from a group consisting of glass, SiO 2 , and a silicon wafer, polyethylene terephthalate (PET), polycarbonate (PC), polyimide (PI), polyethylene naphthalate (PEN), and cycloolefin polymer (COP).

3. The organic light emitting device of claim 1 , wherein the first electrode is a transparent electrode and the second electrode is a metal electrode.

4. The organic light emitting device of claim 1 , wherein the first electrode comprises one or more selected from a group consisting of indium tin oxide (ITO), IZO, ZnO, and SnO 2 .

5. The organic light emitting device of claim 1 , wherein the second electrode comprises one or more selected from a group consisting of Al, Ag, Ca, Mg, Au, Mo, Ir, Cr, Ti, Pd, and an alloy thereof.

6. The organic light emitting device of claim 1 , wherein the first electrode and the fuse pattern comprise the same material.

7. The organic light emitting device of claim 1 , wherein the first electrode has a quadrangular shape comprising four sides on a plan view and at least one of the four sides is electrically connected to the auxiliary electrode.

8. The organic light emitting device of claim 1 , wherein the fuse pattern comprises the same material as the first electrode, and a width and a length of the fuse pattern are 10 to 100 μm, respectively.

9. The organic light emitting device of claim 1 , wherein the fuse pattern comprises the different material from that of the first electrode, and a width and a length of the fuse pattern are 20 to 300 μm, respectively.

10. The organic light emitting device of claim 1 , further comprising:

an internal light extraction layer between the substrate and the first electrode or an external light extraction layer on a surface opposing to a surface of the substrate on which the first electrode is provided.

11. The organic light emitting device of claim 1 , wherein the organic light emitting device is a flexible organic light emitting device.

12. A display apparatus comprising an organic light emitting device of claim 1 .

13. An illumination apparatus comprising an organic light emitting device of claim 1 .

14. A method for preparing an organic light emitting device, the method comprising:

1) forming a first electrode on a substrate;

2) forming an auxiliary electrode on the substrate;

3) forming a fuse pattern which electrically connects the first electrode and the auxiliary electrode, and

4) forming an organic material layer and a second electrode,

wherein the auxiliary electrode in 2) comprises one or more selected from the group consisting of Cr, Mo, Al, Cu, and an alloy thereof, and

wherein the fuse pattern in 3) comprises one or more selected from a group consisting of indium tin oxide (ITO), IZO, ZnO, SnO 2 , Ca, Mg, and indium.

15. A method for preparing an organic light emitting device, the method comprising:

1) forming a first electrode and a fuse pattern on a substrate,

2) forming an auxiliary electrode on the fuse pattern such that the first electrode and the auxiliary electrode are electrically connected to each other through the fuse pattern, and

3) forming an organic material layer and a second electrode,

wherein the auxiliary electrode in 2) comprises one or more selected from the group consisting of Cr, Mo, Al, Cu, and an alloy thereof, and

wherein the fuse pattern in 3) comprises one or more selected from a group consisting of indium tin oxide (ITO), IZO, ZnO, SnO 2 , Ca, Mg, and indium.

16. The method of claim 15 , wherein the first electrode and the fuse pattern comprise the same material.