Light-emitting element, and amine compound for the same

Patent metadata

Field	Value
Publication number	US-12329027-B2
Application number	US-202117537787-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	Mar 11, 2021
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

Provided is a light-emitting element including a first electrode, a second electrode facing the first electrode, and at least one functional layer disposed between the first electrode and the second electrode and including an amine compound represented by Formula 1. The light-emitting element may exhibit excellent light-emitting efficiency and improved service life characteristics.

First claim

What is claimed is:

1. An amine compound represented by Formula 1:

wherein in Formula 1,
L 1 is a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
R 1 is a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, and
Ar 1 to Ar 4 are each independently a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms.

2. The amine compound of claim 1 , wherein Ar 2 and Ar 3 are each independently an unsubstituted phenyl group, an unsubstituted naphthyl group, an unsubstituted biphenyl group, an unsubstituted dibenzofuran group, or an unsubstituted dibenzothiophene group.

3. The amine compound of claim 1 , wherein the amine compound represented by Formula 1 is represented by one of Formula 1-1 to Formula 1-4:

wherein in Formula 1-4,
X 1 is O or S, and
wherein in Formula 1-1 to Formula 1-4,
L 1 , R 1 , Ar 1 , and Ar 4 are each the same as defined in Formula 1.

4. The amine compound of claim 3 , wherein the amine compound represented by Formula 1-4 is represented by Formula 1-4A or Formula 1-4B:

wherein in Formula 1-4A and Formula 1-4B,
L 1 , R 1 , Ar 1 , Ar 4 , and X 1 are each the same as defined in Formula 1-4.

5. The amine compound of claim 1 , wherein
one of Ar 2 to Ar 4 is a carbazole group substituted with a phenyl group, an unsubstituted dibenzofuran group, or an unsubstituted dibenzothiophene group, and
the remainder of Ar 2 to Ar 4 are each a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms.

6. The amine compound of claim 1 , wherein Ar 4 is a group represented by one of Ar4-1 to Ar4-6:

wherein in Ar4-1 to Ar4-6,

represents a binding site to a neighboring atom.

7. The amine compound of claim 1 , wherein R 1 is a group represented by one of R1-1 to R1-4:

wherein in R1-1 to R1-4,

represents a binding site to a neighboring atom.

8. The amine compound of claim 1 , wherein
L 1 is a direct linkage, and
Ar 1 is an unsubstituted phenyl group.

9. The amine compound of claim 1 , wherein the amine compound represented by Formula 1 is one selected from Compound Group 1:

10. A display device comprising:
a base layer;
a circuit layer disposed on the base layer; and
a display element layer disposed on the circuit layer, and including a light-emitting element, wherein
the light emitting element includes:
a first electrode;
a second electrode facing the first electrode; and
at least one functional layer disposed between the first electrode and the second electrode, and

the at least one functional layer includes an amine compound represented by Formula 1:

wherein in Formula 1,
L 1 is a direct linkage, a substituted or unsubstituted arylene group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group having 2 to 30 ring-forming carbon atoms,
R 1 is a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, and
Ar 1 to Ar 4 are each independently a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group having 2 to 30 ring-forming carbon atoms.

11. The display device of claim 10 , further comprising a light control layer disposed on the display element layer, and including a quantum dot.

Assignees

• Samsung Display Co Ltd

Inventors

• Han Sanghyun
• Kim Dongjun
• Kim Minji
• Pak Hankyu
• Jeong Eunjae
• Jo Sohee

Classifications

• H10K50/181

  Electron blocking layers · CPC title

• H10K50/18

  Carrier blocking layers · CPC title

• H10K50/17

  Carrier injection layers · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K85/633 Primary

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