Organic light emitting display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9692012-B2
Application number	US-201414519518-A
Country	US
Kind code	B2
Filing date	Oct 21, 2014
Priority date	Nov 11, 2013
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

An organic light emitting display device includes a first substrate, a thin film transistor disposed on the first substrate, a first electrode electrically coupled to the thin film transistor, a pixel defining layer disposed on the first substrate and the first electrode to define unit pixels, a plurality of organic light emitting structure disposed on the first electrode, where in the organic light emitting structure includes a first organic light emitting structure, a second organic light emitting structure and a third light emitting structure, a second electrode which covers the first through third organic light emitting structures and the pixel defining layer; a metamaterial layer disposed on the second electrode corresponding to the organic light emitting structures, an encapsulation member which covers the second electrode and the metamaterial layer, and a second substrate disposed on the encapsulation member opposite to the first substrate.

First claim

What is claimed is:

1. An organic light emitting display device comprising:
a first substrate;
a thin film transistor disposed on the first substrate;
a first electrode electrically coupled to the thin film transistor;
a pixel defining layer disposed on the first substrate and the first electrode to define unit pixels;
a plurality of organic light emitting structures disposed on the first electrode, wherein the organic light emitting structures comprise a first organic light emitting structure, a second organic light emitting structure and a third light emitting structure;
a second electrode which covers the first through third organic light emitting structures and the pixel defining layer;
a metamaterial layer disposed on the second electrode corresponding to the organic light emitting structures;
an encapsulation member which covers the second electrode and the metamaterial layer; and
a second substrate disposed on the encapsulation member opposite to the first substrate.

2. The device of claim 1 , wherein the metamaterial layer comprises:
a first layer disposed corresponding to the first organic light emitting structure.

3. The device of claim 2 , wherein
the first organic light emitting structure emits light having a predetermined wavelength, and
the first layer amplifies an intensity of the light having the predetermined wavelength.

4. The device of claim 3 , wherein the light having the predetermined wavelength is one of a red color light, a green color light, and a blue color light.

5. The device of claim 2 , wherein the metamaterial layer further comprises:
a second layer disposed corresponding to the second organic light emitting structure.

6. The device of claim 1 , wherein the metamaterial layer comprises:
a first layer disposed corresponding to the first organic light emitting structure;
a second layer disposed corresponding to the second organic light emitting structure; and
a third layer disposed corresponding to the third organic light emitting structure.

7. The device of claim 6 , wherein
the first through third organic light emitting structures respectively emit first through third lights having a same wavelength as each other, and
the first layer converts the first light having the same wavelength into a red color light,
the second layer converts the second light having the same wavelength into a green color light, and
the third layer converts the third light having the same wavelength into a blue color light.

8. The device of claim 7 , wherein each of the first through third lights having the same wavelength is a white color light.

9. The device of claim 6 , wherein
the first organic light emitting structure emits a red color light,
the second organic light emitting structure emits a green color light,
the third organic light emitting structure emits a blue color light,
the first layer amplifies an intensity of the red color light,
the second layer amplifies an intensity of the green color light, and
the third layer amplifies an intensity of the blue color light.

10. The device of claim 1 , wherein the metamaterial layer comprises:
a dielectric layer;
a plurality of nano wires disposed in the dielectric layer, wherein the nano wires penetrate the dielectric layer in a thickness direction of the dielectric layer, and the nano wires are arranged at a regular interval; and
a coating layer disposed between the nano wires and the dielectric layer.

11. The device of claim 10 , wherein the dielectric layer comprises silicon dioxide, polymethylmethacrylate, polycarbonate, polyethyleneterephthalate or a combination thereof.

12. The device of claim 10 , wherein the nano wires comprises graphene, graphene oxide or a combination thereof.

13. The device of claim 10 , wherein the coating layer comprises argentums, aurum, aluminum, copper, nickel, platinum, titanium or a combination thereof.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Eun-Jung
• Lee Seung-Bae
• Choi Byeong-Hwa
• Kim Hak-Sun

Classifications

• H10K2102/331

  Nanoparticles used in non-emissive layers, e.g. in packaging layer · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• G02B1/002

  made of materials engineered to provide properties not available in nature, e.g. metamaterials · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title