Organic light emitting device

Patent metadata

Field	Value
Publication number	US-10355234-B2
Application number	US-201815976975-A
Country	US
Kind code	B2
Filing date	May 11, 2018
Priority date	Dec 29, 2016
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.

First claim

What is claimed is:

1. An organic light emitting diode comprising:
an electrode pattern including a body and a plurality of holes, the body connecting the plurality of holes;
a first electrode on the electrode pattern, the first electrode including a plurality of protruding parts corresponding to the body and a plurality of flat parts corresponding to the plurality of holes;
a light emitting layer on the first electrode; and
a second electrode on the light emitting layer,
wherein the body includes a bottom surface and first and second inclined side surfaces connected to the bottom surface, and an inclination between the first and second side surfaces and the bottom surface is within a range of 15 degrees and 70 degrees.

2. The organic light emitting diode of claim 1 , wherein the electrode pattern and the first electrode are formed of a same material.

3. The organic light emitting diode of claim 1 , wherein the body has a cross-section of a triangular shape and includes a bottom surface and first and second inclined side surfaces connected to the bottom surface.

4. The organic light emitting diode of claim 1 , wherein a width of the body is smaller than a width of each of the plurality of holes.

5. The organic light emitting diode of claim 1 , each of the plurality of holes has a cross-section of a trapezoidal shape.

6. The organic light emitting diode of claim 1 , each of the plurality of holes has a plane of one of a hexagonal shape, a half circular shape, a half elliptical shape, a rectangular shape and a circular shape.

7. The organic light emitting diode of claim 1 , an area of the plurality of holes is reduced from the first electrode to a lower portion thereof.

8. The organic light emitting diode of claim 1 , the body and the plurality of holes are alternately disposed.

9. The organic light emitting diode of claim 1 , the first electrode, the light emitting layer and the second electrode are disposed in a shape that follows a morphology of the electrode pattern.

10. An organic light emitting device comprising:
a substrate including a light emitting region;
an overcoat layer on the substrate;
an electrode pattern in the light emitting region on the overcoat layer, the electrode pattern including a body and a plurality of holes exposing the overcoat layer;
a first electrode on the overcoat layer and the electrode pattern, the first electrode including a plurality of protruding parts corresponding to the body and a plurality of flat parts corresponding to the plurality of holes;
a bank layer on the overcoat layer and the first electrode, the bank layer including an opening exposing the first electrode;
a light emitting layer on the first electrode and the overcoat layer; and
a second electrode on the light emitting layer,
wherein the electrode pattern and the first electrode are formed of a same material.

11. The organic light emitting device of claim 10 , wherein the body has a cross-section of a triangular shape.

12. The organic light emitting device of claim 10 , wherein a width of the body is smaller than a width of each of the plurality of holes.

13. The organic light emitting device of claim 10 , each of the plurality of holes has a cross-section of a trapezoidal shape.

14. The organic light emitting device of claim 10 , each of the plurality of holes has a plane of one of a hexagonal shape, a half circular shape, a half elliptical shape, a rectangular shape and a circular shape.

15. The organic light emitting device of claim 10 , an area of the plurality of holes is reduced from the first electrode to a lower portion thereof.

16. The organic light emitting device of claim 10 , the body and the plurality of holes are alternately disposed.

17. The organic light emitting device of claim 10 , the first electrode, the light emitting layer and the second electrode are disposed in a shape that follows a morphology of the electrode pattern.

18. The organic light emitting device of claim 10 , the overcoat layer has a flat top surface, and the electrode pattern is disposed on the flat top surface of the overcoat layer.

Assignees

• Lg Display Co Ltd

Inventors

• Choi Yong-Hoon
• Koo Won-Hoe
• Kim Jin-Tae
• Kim Soo-Kang
• Jang Ji-Hyang

Classifications

• H01L2251/558

  Electricity · mapped topic

• H01L27/3248

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L2251/308

  Electricity · mapped topic

• H01L51/5225

  Electricity · mapped topic