Heterocyclic compound and organic light emitting device comprising same

Patent metadata

Field	Value
Publication number	US-2025311622-A1
Application number	US-202519087015-A
Country	US
Kind code	A1
Filing date	Mar 21, 2025
Priority date	Mar 26, 2024
Publication date	Oct 2, 2025
Grant date	—

Abstract

Disclosed are a heterocyclic compound of Chemical Formula 1 and an organic light emitting device including the same. When the heterocyclic compound is used for an organic light emitting device, the driving voltage of the device can be lowered, the light efficiency of the device can be improved, and the thermal stability of the heterocyclic compound can be improved to improve the service life characteristics of the device.

First claim

What is claimed is:

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

wherein, in Chemical Formula 1,
X is O; or S,
Ra and Rb are the same as or different from each other, and are each independently a substituted or unsubstituted C6 to C60 aryl group; or a substituted or unsubstituted C2 to C60 heteroaryl group,
L1 to L3 are the same as or different from each other, and are each independently a direct bond; or a substituted or unsubstituted C6 to C60 arylene group,
each of l1 to l3 is an integer from 0 to 4, and
when each of l1 to l3 is an integer of 2 or higher, substituents in the parenthesis are the same as or different from each other,
R1 to R6 are the same as or different from each other, and are each independently hydrogen; deuterium; a cyano group; a halogen group; a substituted or unsubstituted C1 to C60 alkyl group; a substituted or unsubstituted C3 to C60 cycloalkyl group; a substituted or unsubstituted C2 to C60 heterocycloalkyl group; a substituted or unsubstituted silyl group; or a substituted or unsubstituted phosphine oxide group,
a is an integer from 0 to 4,
each of b and c is an integer from 0 to 3,
each of d and e is an integer from 0 to 5,
f is an integer from 0 to 2, and
when each of a, b, c, d, e, and f is 2 or an integer higher than 2, substituents in the parenthesis 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 Formula 1-1 to 1-4,
each of X, Ra, Rb, L1 to L3, l1 to l3, R1 to R6, a, b, c, d, e, and f is the same as that defined in Chemical Formula 1.

3 . The heterocyclic compound of claim 1 , wherein Ra and Rb are the same as or different from each other, and are each independently a substituted or unsubstituted C6 to C30 aryl group; or a C2 to C30 heteroaryl group comprising at least one heteroatom from N, O, and S and substituted or unsubstituted.

4 . The heterocyclic compound of claim 1 , wherein L1 to L3 are the same as or different from each other, and are each independently a direct bond; or a substituted or unsubstituted C6 to C30 arylene group.

5 . The heterocyclic compound of claim 1 , wherein R1 to R6 are the same as or different from each other, and are each independently hydrogen; or deuterium.

6 . The heterocyclic compound of claim 1 , wherein a deuterium content of the heterocyclic compound represented by Chemical Formula 1 is 0%, or 1% to 100%.

7 . 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

• Lim Na-Gyung
• Lee Nam-Jin
• Jeong Won-Jang
• Kim Dong-Jun
• Choi Dae-Hyuk

Classifications

• H10K50/181

  Electron blocking layers · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K85/622

  containing four rings, e.g. pyrene · CPC title

• H10K85/633

  comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom · CPC title

• H10K85/626

  containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene · CPC title