Heterocyclic compound and organic light-emitting device comprising same

Patent metadata

Field	Value
Publication number	US-12552985-B2
Application number	US-202017781291-A
Country	US
Kind code	B2
Filing date	Nov 27, 2020
Priority date	Dec 2, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device including the same.

First claim

The invention claimed is:

1 . A heterocyclic compound represented by the following Chemical Formula 1:

wherein, in Chemical Formula 1,
R1 to R5 are each independently hydrogen; deuterium; a halogen group; a cyano group; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
L is a direct bond; a substituted or unsubstituted arylene group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroarylene group having 2 to 60 carbon atoms; and
Z is a substituted or unsubstituted aryl group having 10 to 60 carbon atoms; or a substituted or unsubstituted phosphine oxide group, or represented by the following Chemical Formula 2;

in Chemical Formula 2,
X1 to X3 are each CR or N, and at least one thereof is N;
R, R21 and R22 are each independently hydrogen; deuterium; a substituted or unsubstituted alkyl group having 1 to 60 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms;
adjacent groups among X1 to X3, R21 and R22 may bond to each other to form a substituted or unsubstituted ring;
r is an integer of 0 to 3;
a and b are each an integer of 1 to 5; and
when r, a and b are each 2 or greater, substituents in the parentheses are the same as or different from each other.

2 . The heterocyclic compound of claim 1 , wherein Chemical Formula 1 is represented by any one of the following Chemical Formulae 1-1 to 1-4:

in Chemical Formulae 1-1 to 1-4,
each substituent has the same definition as in Chemical Formula 1.

3 . The heterocyclic compound of claim 1 , wherein Z is a substituted or unsubstituted anthracenyl group; or a phosphine oxide group unsubstituted or substituted with an alkyl group, or represented by Chemical Formula 2.

4 . The heterocyclic compound of claim 1 , wherein Chemical Formula 2 is any one selected from among the following structural formulae:

in the structural formulae,
R31 and R32 are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted aryl group having 6 to 60 carbon atoms; or a substituted or unsubstituted heteroaryl group having 2 to 60 carbon atoms, and
R33 is hydrogen; deuterium; or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.

5 . The heterocyclic compound of claim 1 , wherein at least two of R1 to R3 are each independently a cyano group; a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms; or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms.

6 . The heterocyclic compound of claim 1 , wherein Chemical Formula 1 is represented by any one of the following compounds:

Assignees

• Lt Materials Co Ltd

Inventors

• Lee Gi-Back
• Lee Nam-Jin
• Jeong Won-Jang
• Kim Dong-Jun

Classifications

• H10K50/19

  Tandem OLEDs · CPC title

• H10K50/18

  Carrier blocking layers · CPC title

• H10K50/16

  Electron transporting layers · CPC title

• H10K85/654

  comprising only nitrogen as heteroatom (H10K85/652 takes precedence) · CPC title

• H10K85/6572

  comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole · CPC title