Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-2016149142-A1
Application number	US-201514849804-A
Country	US
Kind code	A1
Filing date	Sep 10, 2015
Priority date	Nov 26, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

An organic light emitting display device and an organic layer are disclosed. The organic light emitting display device includes an anode, an organic layer over the anode, and a cathode over the organic layer. In one aspect, the organic layer may include an indolocarbazole compound. In another aspect, the organic layer may include a compound by linking a carbazole derivative and a carbazole compound to an aryl group or a heteroaryl group.

First claim

What is claimed is:

1 . An organic light emitting display device comprising:
an anode; an organic layer over the anode; and a cathode over the organic layer, wherein the organic layer includes an indolocarbazole compound represented by the following Chemical Formula 1:

where X is one among N, O, S, and Se, wherein N is bound to one among H, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, R 1 to R 4 are independently one among H, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, l, m, n, and o are an integer between 0 and 4,
wherein, if any of l, m, n, and o has a value of 2 or more, the corresponding R is the same with each other or if any of l, m, n, and o has a value of 2 or more, the corresponding R is different from each other, and
L is a substituted or unsubstituted aryl group having to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms.

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

3 . The organic light emitting display device of claim 1 , wherein the organic layer includes a light emitting layer.

4 . The organic light emitting display device of claim 3 , wherein the indolocarbazole compound includes a host of the light emitting layer.

5 . The organic light emitting display device of claim 1 , wherein the organic layer includes at least one among a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer, and at least one among the hole transporting layer, electron blocking layer, hole blocking layer, and electron transporting layer includes the indolocarbazole compound.

6 . An organic light emitting display device comprising:
an organic layer over an anode; and a cathode over the organic layer, wherein the organic layer includes a compound by linking a carbazole derivative and a carbazole compound to an aryl group or a heteroaryl group.

7 . The organic light emitting display device of claim 6 , wherein the organic layer includes a light emitting layer.

8 . The organic light emitting display device of claim 7 , wherein the organic layer includes a host for the light emitting layer.

9 . The organic light emitting display device of claim 6 , wherein the carbazole derivative and the carbazole compound have hole transfer properties, and the aryl group or the heteroaryl group has electron transfer properties.

10 . The organic light emitting display device of claim 6 , wherein an organic light emitting display device having the compound has reduced an operating voltage and increased efficiency and lifetime, as compared with an organic light emitting display device without the compound.

11 . The organic light emitting display device of claim 6 , wherein the organic layer includes at least one among a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer, and the at least one among a hole transport layer, an electron blocking layer, a hole blocking layer, and an electron transport layer includes the compound.

12 . The organic light emitting display device of claim 6 , wherein the compound includes a compound represented by the following Chemical Formula 1:

where X is one among N, O, S, and Se, wherein N is bound to one among H, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, R 1 to R 4 are independently one among H, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, l, m, n, and o are an integer between 0 and 4,
wherein, if any of l, m, n, and o has a value of 2 or more, the corresponding R is the same with each other or if any of l, m, n, and o has a value of 2 or more, the corresponding R is different from each other, and
L is a substituted or unsubstituted aryl group having to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms.

13 . The organic light emitting display device of claim 12 , wherein the compound includes one among the following compounds:

14 . An organic layer comprising a host material with an indolocarbazole compound bound to a compound having an aryl group or a heteroaryl group to optimize a lifetime and an efficiency of an organic emissive layer.

15 . The organic layer of claim 14 , wherein the organic layer includes a compound represented by the following Chemical Formula 1:

where X is one among N, O, S, and Se, wherein N is bound to one among H, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, R 1 to R 4 are independently one among H, heavy hydrogen, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl amino group having 6 to carbon atoms, and a substituted or unsubstituted heteroaryl amino group having 2 to 30 carbon atoms, l, m, n, and o are an integer between 0 and 4,
wherein, if any of l, m, n, and o has a value of 2 or more, the corresponding R is the same with each other or if any of l, m, n, and o has a value of 2 or more, the corresponding R is different from each other, and
L is a

Assignees

• Lg Display Co Ltd

Inventors

• Kim Dohan
• Kim Jungkeun
• Kang Hyeseung
• Yun Min
• Yoon Seunghee

Classifications

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title

• C09K2211/1092

  containing sulfur as the only heteroatom · CPC title

• C07D487/06 Primary

  Peri-condensed systems · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title