Heterocyclic compound and organic light emitting device including same

Patent metadata

Field	Value
Publication number	US-2018051007-A1
Application number	US-201615556465-A
Country	US
Kind code	A1
Filing date	Jun 3, 2016
Priority date	Jun 3, 2015
Publication date	Feb 22, 2018
Grant date	—

Abstract

The present specification relates to a hetero-cyclic compound and an organic light emitting device comprising the same.

First claim

1 . A hetero-cyclic compound represented by the following Chemical Formula 1:

in Chemical Formula 1,
X 1 to X 3 are the same as or different from each other, and are each independently N or C—CN,
two of X 1 to X 3 are N, and
R 1 to R 3 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; a substituted or unsubstituted straight-chained or branched alkyl group having 1 to 30 carbon atoms; a substituted or unsubstituted monocyclic or polycyclic cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted alkylthioxy group; a substituted or unsubstituted arylthioxy group; a substituted or unsubstituted alkylsulfoxy group; a substituted or unsubstituted arylsulfoxy group; a substituted or unsubstituted alkenyl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted arylphosphine group; a substituted or unsubstituted phosphine oxide group; a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; and a substituted or unsubstituted monocyclic or polycyclic hetero-cyclic group having 2 to 30 carbon atoms.

2 . The hetero-cyclic compound of claim 1 , wherein the hetero-cyclic compound represented by Chemical Formula 1 is represented by the following Chemical Formula 2 or 3:

in Chemical Formulae 2 and 3,
the definitions of R 1 to R 3 are the same as those in Chemical Formula 1.

3 . The hetero-cyclic compound of claim 1 , wherein R 1 to R 3 are the same as or different from each other, and are each independently selected from the group consisting of a substituted or unsubstituted phenyl group; a substituted or unsubstituted biphenyl group; a substituted or unsubstituted terphenyl group; and a substituted or unsubstituted fluorenyl group.

4 . The hetero-cyclic compound of claim 1 , wherein the compound represented by Chemical Formula 1 is any one of the following compounds 1 to 9:

5 . An organic light emitting device, comprising:
a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise the hetero-cyclic compound of claim 1 .

6 . The organic light emitting device of claim 5 , wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises the hetero-cyclic compound.

7 . The organic light emitting device of claim 5 , wherein the organic material layer comprises an electron transporting layer, an electron injection layer, or a layer which simultaneously transports and injects electrons, and the electron transporting layer, the electron injection layer, or the layer which simultaneously transports and injects electrons comprises the hetero-cyclic compound.

8 . The organic light emitting device of claim 5 , wherein the organic material layer further comprises one or more selected from the group consisting of a hole injection layer, a hole transporting layer, a light emitting layer, an electron transporting layer, and an electron injection layer.

9 . The organic light emitting device of claim 5 , wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 1-A:

in Chemical Formula 1-A,
n1 is an integer of 1 or more,
Ar3 is a substituted or unsubstituted monovalent or more benzofluorene group; a substituted or unsubstituted monovalent or more fluoranthene group; a substituted or unsubstituted monovalent or more pyrene group; or a substituted or unsubstituted monovalent or more chrysene group,
L1 is a direct bond; a substituted or unsubstituted arylene group; or a substituted or unsubstituted heteroarylene group,
Ar4 and Ar5 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group; a substituted or unsubstituted silyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted arylalkyl group; or a substituted or unsubstituted heteroaryl group, or combine with each other to form a substituted or unsubstituted ring, and
when n1 is 2 or more, two or more structures in the parenthesis are the same as or different from each other.

10 . The organic light emitting device of claim 9 , wherein L1 is a direct bond, Ar3 is a divalent pyrene group, Ar4 and Ar5 are the same as or different from each other, and are each independently an aryl group which is unsubstituted or substituted with a silyl group which is substituted with an alkyl group, and n1 is 2.

11 . The organic light emitting device of claim 5 , wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises a compound represented by the following Chemical Formula 2-A:

in Chemical Formula 2-A,
Ar11 and Ar12 are the same as or different from each other, and are each independently a substituted or unsubstituted monocyclic aryl group; or a substituted or unsubstituted polycyclic aryl group, and
G1 to G8 are the same as or different from each other, and are each independently hydrogen; a substituted or unsubstituted monocyclic aryl group; or a substituted or unsubstituted polycyclic aryl group.

12 . The organic light emitting device of claim 11 , wherein Ar11 and Ar12 are a 1-naphthyl group, and G1 to G8 are hydrogen.

13 . The organic light emitting device of claim 9 , wherein the light emitting layer comprises a compound represented by the following Chemical Formula 2-A:

in Chemical Formula 2-A,
Ar11 and Ar12 are the same as or different from each other, and are each independently a substituted or unsubstituted monocyclic aryl group; or a substituted or unsubstituted polycyclic aryl group, and
G1 to G8 are the same as or different from each other, and are each independently hydrogen; a substituted or unsubstituted monocyclic aryl group; or a substituted or unsubstituted polycyclic aryl group.

Assignees

• Lg Chemical Ltd

Inventors

• Jung Min Woo
• Lee Dong Hoon
• Huh Jungoh
• Jang Boonjae
• Kang Minyoung
• Heo Dong Uk
• Han Miyeon
• Hong Wanpyo
• Kim Yongha

Classifications

• C09K2211/1007

  Non-condensed systems · CPC title

• C09K11/06

  containing organic luminescent materials · CPC title

• C07D239/26

  with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms · CPC title

• C07D239/24 Primary

  having three or more double bonds between ring members or between ring members and non-ring members · CPC title

• C09K2211/1088

  containing oxygen as the only heteroatom · CPC title