Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2016141502-A1
Application number	US-201514833322-A
Country	US
Kind code	A1
Filing date	Aug 24, 2015
Priority date	Nov 19, 2014
Publication date	May 19, 2016
Grant date	—

Abstract

An organic light emitting display device is disclosed. The organic light emitting display device comprises at least two light emitting parts between an anode and a cathode, each of the light emitting parts having a light emitting layer and an electron transport layer, charge generation layers between the at least two light emitting parts, wherein at least one among the electron transport layers in the at least two light emitting parts includes a pyrimidine derivative at both sides of the core so as to reduce a driving voltage and increase an efficiency of the organic light emitting display device.

First claim

What is claimed is:

1 . An organic light emitting display device, comprising:
at least two light emitting parts between an anode and a cathode, each of the light emitting parts having a light emitting layer and an electron transport layer; and charge generation layers between the at least two light emitting parts, wherein at least one among the electron transport layers in the at least two light emitting parts includes a compound represented by the following Chemical Formula 1:

where Y 1 , Y 2 , and Y 3 are independently one among N, C, O, S, and Si, wherein at least one among Y 1 , Y 2 , and Y 3 is N, and A 1 is an aromatic ring compound having 6 to 50 carbon atoms or a hetero ring compound having 5 to 50 carbon atoms having one among N, O, S, and Si atoms.

2 . The organic light emitting display device of claim 1 , wherein the compound includes one among the following compounds:

3 . The organic light emitting display device of claim 1 , wherein A 1 includes one among the following compounds:

where

includes one among

4 . The organic light emitting display device of claim 1 , wherein an organic light emitting display device having the compound has reduced an operating voltage and increased an efficiency, as compared with an organic light emitting display device without the compound.

5 . The organic light emitting display device of claim 1 , wherein the at least two light emitting parts include:
a first light emitting part having a first light emitting layer; and a second light emitting part having a second light emitting layer.

6 . The organic light emitting display device of claim 5 , wherein the first light emitting layer includes a blue light emitting layer, the second light emitting layer includes a yellow-green light emitting layer, and the electron transport layer adjacent to the yellow-green light emitting layer includes the compound.

7 . The organic light emitting display device of claim 1 , wherein the at least two light emitting parts include:
a first light emitting part having a first light emitting layer; a second light emitting part having a second light emitting layer; and a third light emitting part having a third light emitting layer.

8 . The organic light emitting display device of claim 7 , wherein the first light emitting layer includes a blue light emitting layer, the second light emitting layer includes a yellow-green light emitting layer, the third light emitting layer includes a blue light emitting layer, and the electron transport layer adjacent to the yellow-green light emitting layer includes the compound.

9 . An organic layer, comprising a pyrimidine derivative having one or more electrons with high electronegativity, among materials with electron properties, so as to reduce an operating voltage of an organic light emitting display device and increase an efficiency of the organic light emitting display device.

10 . The organic layer of claim 9 , wherein the organic layer includes a compound represented by the following Chemical Formula 1:

where Y 1 , Y 2 , and Y 3 are independently one among N, C, O, S, and Si, wherein at least one among Y 1 , Y 2 , and Y 3 is N, and A 1 is an aromatic ring compound having 6 to 50 carbon atoms or a hetero ring compound having 5 to 50 carbon atoms having one among N, O, S, and Si atoms.

11 . The organic layer of claim 9 , wherein the compound includes one among the following compounds:

12 . The organic layer of claim 11 , wherein A 1 includes one among the following compounds:

where

includes one among

13 . An organic light emitting display device, comprising:
at least two light emitting parts between an anode and a cathode, each of the light emitting parts having a light emitting layer and an electron transport layer; and charge generation layers between the at least two light emitting parts, wherein at least one among the electron transport layers in the at least two light emitting parts includes a pyrimidine derivative at both sides of the core so as to reduce an operating voltage and increase an efficiency of the organic light emitting display device.

14 . T

Assignees

• Lg Display Co Ltd

Inventors

• Joo Sunghoon
• Seo Jeongdae
• Kim Hyoseok
• Kang Hyeseung
• Yoo Seonkeun
• Yun Min

Classifications

• C07D401/14

  containing three or more hetero rings · CPC title

• C07D403/14 Primary

  containing three or more hetero rings · CPC title

• C07D413/14

  containing three or more hetero rings · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title