Organic light emitting device

Patent metadata

Field	Value
Publication number	US-10158096-B2
Application number	US-201515310679-A
Country	US
Kind code	B2
Filing date	May 15, 2015
Priority date	May 15, 2014
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

Disclosed is an organic light emitting device.

First claim

What is claimed is:

1. An organic light emitting device comprising:
a first electrode;
an organic material layer including an at least five-layered emission layer provided between the first electrode and a second electrode; and
a secondary electrode provided on a top, a bottom, or a side surface of the first electrode and electrically connected to the first electrode, the secondary electrode having a mesh structure,
wherein
each of meshes of the secondary electrode configures a pixel of the organic light emitting device,
a sheet resistance of the first electrode is 5,000Ω/□ or more and a sheet resistance of the secondary electrode is 3Ω/□ or less,
an area of the pixel is 0.01 mm 2 to 0.64 cm 2 and an aperture ratio of the secondary electrode is 70% or more,
a multiplication of the sheet resistance of the first electrode and the area of one of the pixels is 3,200, V cm 2 /A or less, and
a multiplication of the sheet resistance of the secondary electrode and a whole pixel area of the organic light emitting device is 960 V cm 2 /A or less.

2. The organic light emitting device of claim 1 , wherein number of pixels may be 1,000 to 1,000,000.

3. The organic light emitting device of claim 1 , wherein the first electrode comprises one or more materials selected from a group consisting of Nb-based oxide, Ti-based oxide, Zn-based oxide, and a conductive polymer.

4. The organic light emitting device of claim 1 , wherein a luminance difference between one pixel and another pixel is within 30%.

5. The organic light emitting device of claim 1 , wherein a luminance difference in a whole emissive area of the organic light emitting device is within 10%.

6. The organic light emitting device of claim 1 , wherein a resistance between a first electrode included in one pixel and a first electrode included in another pixel is 2,000Ω to 800,000 Ω.

7. The organic light emitting device of claim 1 , wherein the pixel is provided in plurality, and each of the plurality of pixels emits white light of 2,000 K to 12,000 K.

8. The organic light emitting device of claim 1 , further comprising:
a substrate provided on a surface of the first electrode opposite to a surface on which the organic material layer is provided; and
a light scattering layer provided between the substrate and the first electrode,
wherein the light scattering layer comprises a planarization layer.

9. The organic light emitting device of claim 1 , further comprising:
a substrate provided on a surface of the first electrode opposite to a surface on which the organic material layer is provided;
a light scattering layer provided on a surface of the substrate opposite to a surface on which the first electrode is provided.

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

11. An organic light emitting device comprising:
a first electrode;
an organic material layer including at least two layered emission layer provided between the first electrode and a second electrode; and
a secondary electrode provided on a top, a bottom, or a side surface of the first electrode and electrically connected to the first electrode, the secondary electrode having a mesh structure,
wherein
each of meshes of the secondary electrode configures a pixel of the organic light emitting device,
the sheet resistance of the first electrode is 5,000Ω/□ or more and a sheet resistance of the secondary electrode is 3Ω/□ or less,
an area of the pixel is 0.01 mm 2 to 0.64 cm 2 and an aperture ratio of the secondary electrode is 70% or more,
a multiplication of the sheet resistance of the first electrode and the area of one of the pixels is 1,600 V cm 2 /A or less, and
a multiplication of the sheet resistance of the secondary electrode and a whole pixel area of the organic light emitting device is 480 V cm 2 /A or less.

12. A lighting device comprising an organic light emitting device,
wherein the organic light emitting device including:
a first electrode;
a second electrode provided opposite to the first electrode;
an organic material layer including an at least five-layered emission layer provided between the first electrode and the second electrode; and
a secondary electrode provided on a top, a bottom, or a side surface of the first electrode and electrically connected to the first electrode, the secondary electrode having a mesh structure,
wherein
each of meshes of the secondary electrode configures a pixel of the organic light emitting device,
a sheet resistance of the first electrode is 5,000Ω/□ or more, and a sheet resistance of the secondary electrode is 3Ω/□ or less,
an area of the pixel is 0.01 mm 2 to 0.64 cm 2 and an aperture ratio of the secondary electrode is 70% or more,
a multiplication of the sheet resistance of the first electrode and the area of one of the pixels is 3,200, V cm 2 /A or less, and
a multiplication of the sheet resistance of the secondary electrode and a whole pixel area of the organic light emitting device is 960 V cm 2 /A or less.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Yeon Keun
• Jang Seongsu
• Hwang Jin Ha
• Kim Young Eun

Classifications

• H01L51/5225

  Electricity · mapped topic

• H01L51/5268

  Electricity · mapped topic

• H01L2251/5392

  Electricity · mapped topic

• H01L51/5228

  Electricity · mapped topic

• H01L51/5209

  Electricity · mapped topic