Organic light-emitting element

Patent metadata

Field	Value
Publication number	US-11877509-B2
Application number	US-201716301574-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jun 2, 2016
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

The present specification relates to an organic light emitting device.

First claim

The invention claimed is:

1. An organic light emitting device comprising:
a first electrode;
a second electrode disposed to face the first electrode; and
a light emitting layer disposed between the first electrode and the second electrode,
wherein the organic light emitting device comprises a first organic material layer including a compound represented by the following Chemical Formula 1 between the first electrode and the light emitting layer, and
a second organic material layer including a compound represented by the following Chemical Formula 2 between the second electrode and the light emitting layer:

in Chemical Formulae 1 and 2,
Ar1 is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms,
Ar2 is a substituted or unsubstituted carbazole group; a substituted or unsubstituted benzocarbazole group; a substituted or unsubstituted benzonaphthofuran group; a substituted or unsubstituted dibenzofuran group; a substituted or unsubstituted dibenzothiophene group; a substituted or unsubstituted pyridine group; or a substituted or unsubstituted quinoline group,
L1 to L4 are the same as or different from each other, and are each independently a direct bond; or a substituted or unsubstituted arylene group having 6 to 30 carbon atoms,
L5 is a direct bond; a substituted or unsubstituted phenylene group; a substituted or unsubstituted naphthylene group; a substituted or unsubstituted biphenylylene group; a substituted or unsubstituted terphenylylene group; or a substituted or unsubstituted divalent phenanthrene group,
R1 to R5 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms; or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or R1 and R2 or R3 and R4 are optionally bonded to each other to form a ring,
R11 to R16 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms, and
a, d, and e are each an integer from 0 to 4, b and c are each an integer from 0 to 3, f is an integer from 0 to 8, and when a to f are 2 or more, each of R11 to R16 is the same as or different from each other,
provided that when R5 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, and L5 is a bond, then Ar2 is a substituted or unsubstituted benzonaphthofuran group,
provided that when Ar2 is a substituted or unsubstituted pyridine group, then L5 is a substituted or unsubstituted phenylene group; a substituted or unsubstituted naphthylene group; a substituted or unsubstituted biphenylylene group; a substituted or unsubstituted terphenylylene group; or a substituted or unsubstituted divalent phenanthrene group.

2. The organic light emitting device of claim 1 , wherein Chemical Formula 1 is represented by any one of the following Chemical Formulae 1-1 to 1-6:

in Chemical Formulae 1-1 to 1-6, the definitions of Ar1, L1 to L3, R11 to R14, and a to d are the same as those in Chemical Formula 1,
R21 to R26 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms; a substituted or unsubstituted aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms, and
g and l are an integer from 0 to 8, h to k are each an integer from 0 to 5, and when g to l are 2 or more, each of R21 to R26 is the same as or different from each other.

3. The organic light emitting device of claim 1 , wherein Ar1 is a substituted or unsubstituted phenyl group; a substituted or unsubstituted naphthyl group; a substituted or unsubstituted biphenyl group; a substituted or unsubstituted terphenyl group; a substituted or unsubstituted quarterphenyl group; a substituted or unsubstituted fluorene group; a substituted or unsubstituted phenanthrene group; a substituted or unsubstituted triphenylene group; a substituted or unsubstituted anthracene group; a substituted or unsubstituted fluoranthene group; a substituted or unsubstituted pyrene group; a substituted or unsubstituted carbazole group; a substituted or unsubstituted benzocarbazole group; a substituted or unsubstituted benzonaphthofuran group; a substituted or unsubstituted dibenzofuran group; a substituted or unsubstituted dibenzothiophene group; a substituted or unsubstituted pyridine group; or a substituted or unsubstituted quinoline group.

4. The organic light emitting device of claim 1 , wherein L1 to L4 are the same as or different from each other, and are each independently a direct bond; a substituted or unsubstituted phenylene group; a substituted or unsubstituted naphthylene group; a substituted or unsubstituted biphenylylene group; a substituted or unsubstituted terphenylylene group; or a substituted or unsubstituted divalent phenanthrene group.

5. The organic light emitting device of claim 1 , wherein the compound represented by Chemical Formula 1 is selected from the following structural formulae:

Assignees

• Lg Chemical Ltd

Inventors

• Cha Yongbum
• Kim Seong So
• Lee Sung Jae
• Hong Sung Kil

Classifications

• H10K85/6576

  comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene · CPC title

• H10K85/654

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

• H10K85/633 Primary

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

• H10K50/181

  Electron blocking layers · CPC title

• H10K50/16

  Electron transporting layers · CPC title