Organic light emitting device

Patent metadata

Field	Value
Publication number	US-10181498-B2
Application number	US-201815986450-A
Country	US
Kind code	B2
Filing date	May 22, 2018
Priority date	Sep 22, 2015
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

An organic light emitting device includes four sub-organic light emitting devices. The first device includes a first anode, a first common light emitting portion, and a first sub-light emitting portion. The second device includes a second anode, a second common light emitting portion, a first auxiliary layer, and a second sub-light emitting portion. The third device includes a third anode and a third common light emitting portion. The fourth device includes a fourth anode, a fourth common light emitting portion, and a light emitting layer emitting a first light. The first and second sub-light emitting portions have an integral structure and emit second light. The first, second, third, and fourth common light emitting portions have an integral structure and emit third light having a wavelength longer than a wavelength of at least one of the first or second lights.

First claim

What is claimed is:

1. An organic light emitting device, comprising:
a first sub-organic light emitting device including a first anode, a first common light emitting portion, and a first sub-light emitting portion;
a second sub-organic light emitting device including a second anode, a second common light emitting portion, a first auxiliary layer, and a second sub-light emitting portion;
a third sub-organic light emitting device including a third anode and a third common light emitting portion; and
a fourth sub-organic light emitting device including a fourth anode, a fourth common light emitting portion, and a light emitting layer emitting a first light,
wherein the first sub-light emitting portion and the second sub-light emitting portion are provided as an integral structure and emit a second light, and wherein the first common light emitting portion, the second common light emitting portion, the third common light emitting portion and fourth common light emitting portion are provided as a integral structure and emit a third light having a wavelength longer than a wavelength of at least one of the first or second lights.

2. The organic light emitting device as claimed in claim 1 , wherein:
the first light is in a wavelength range of about 620 nm to about 750 nm,
the second light is in a wavelength range of about 440 nm to about 490 nm, and the third light is in a wavelength range of about 495 nm to about 570 nm.

3. The organic light emitting device as claimed in claim 1 , wherein:
the first sub-organic light emitting device emits light in a wavelength range of about 440 nm to about 458 nm,
the second sub-organic light emitting device emits light in a wavelength range of about 459 nm to about 490 nm,
the third sub-organic light emitting device emits light in a wavelength range of about 495 nm to about 570 nm, and
the fourth sub-organic light emitting device emits light in a wavelength range of about 620 nm to about 750 nm.

4. The organic light emitting device as claimed in claim 1 , wherein the first auxiliary layer is between the second common light emitting portion and the second sub-light emitting portion or on the second sub-light emitting portion.

5. The organic light emitting device as claimed in claim 1 , wherein:
the fourth sub-organic light emitting device includes a second auxiliary layer, and
the second auxiliary layer is between the fourth common light emitting portion and the light emitting layer or on the light emitting layer.

6. The organic light emitting device as claimed in claim 1 , wherein:
the first sub-organic light emitting device includes a first intermediate auxiliary portion between the first common light emitting portion and the first sub-light emitting portion,
the second sub-organic light emitting device includes a second intermediate auxiliary portion between the second common light emitting portion and the first auxiliary layer, and
the first intermediate auxiliary portion is provided with the second intermediate auxiliary portion in an integral structure.

7. The organic light emitting device as claimed in claim 1 , wherein the first sub-organic light emitting device, the second sub-organic light emitting device, and the third sub-organic light emitting device are spaced apart from each other.

Assignees

• Samsung Display Co Ltd

Inventors

• Song Aree
• Won Byeong-Hee
• Park Wonsang
• Baek Jongin

Classifications

• H01L27/3213 Primary

  Electricity · mapped topic

• H01L27/3218

  Electricity · mapped topic

• H01L51/504

  Electricity · mapped topic

• H01L51/5265

  Electricity · mapped topic

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title