Heterocyclic compound and organic light-emitting device comprising same

Patent metadata

Field	Value
Publication number	US-12565484-B2
Application number	US-202017775369-A
Country	US
Kind code	B2
Filing date	Nov 16, 2020
Priority date	Dec 2, 2019
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present application provides a heterocyclic compound capable of significantly enhancing lifetime, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device comprising the heterocyclic compound in an organic material layer.

First claim

The invention claimed is:

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

wherein, in Chemical Formula 1,
L1 is a direct bond;
a substituted or unsubstituted phenylene group; a substituted or unsubstituted biphenylene group; a substituted or unsubstituted naphthylene group; or a substituted or unsubstituted anthracene group;
R1 is a substituted or unsubstituted phenyl group; a substituted or unsubstituted biphenyl group; a substituted or unsubstituted naphthyl group; a substituted or unsubstituted anthracene group; a substituted or unsubstituted pyridine group; a substituted or unsubstituted pyrimidine group; a substituted or unsubstituted triazine group; a substituted or unsubstituted phenanthridine group; a substituted or unsubstituted phenanthroline group; or a substituted or unsubstituted phosphine oxide group,
X1 is hydrogen; or deuterium,
X2 and X3 are each independently hydrogen; deuterium; a cyano group; or groups adjacent to each other bonded to each other to form a benzene ring;
m, n and l are each independently an integer of 1 to 5; and
when m, n and l 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 the “substituted or unsubstituted” means being substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 60 carbon atoms; a linear or branched alkenyl group having 2 to 60 carbon atoms; a linear or branched alkynyl group having 2 to 60 carbon atoms; a monocyclic or polycyclic cycloalkyl group having 3 to 60 carbon atoms; a monocyclic or polycyclic heterocycloalkyl group having 2 to 60 carbon atoms; a monocyclic or polycyclic aryl group having 6 to 60 carbon atoms; a monocyclic or polycyclic heteroaryl group having 2 to 60 carbon atoms; a silyl group; a phosphine oxide group; and an amine group, or being unsubstituted, or being substituted with a substituent linking two or more substituents selected from among the substituents illustrated above, or being unsubstituted.

3 . The heterocyclic compound of claim 1 , wherein Chemical Formula 1 is represented by any one of the following Chemical Formula 2 to Chemical Formula 6:

in Chemical Formula 2 to Chemical Formula 6,
each substituent has the same definition as in Chemical Formula 1.

4 . 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
• Park Seong-Jong
• Jeong Won-Jang
• Kim Dong-Jun

Classifications

• H10K50/16

  Electron transporting layers · CPC title

• H10K50/18

  Carrier blocking layers · CPC title

• H10K85/6572

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

• H10K85/654

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

• H10K85/615

  Polycyclic condensed aromatic hydrocarbons, e.g. anthracene · CPC title