BENZOCARBAZOLE-BASED COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME

• US 20200136058A1
• Filed: 03/27/2018
• Published: 04/30/2020
• Est. Priority Date: 03/27/2017
• Status: Active Application

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: KIM, Minjun, KWON, Hyok Joon, CHOI, Ji Young, KIM, Young Seok, KIM, Kongkyeom, LEE, Min Woo
• Application Number:
  US16/339,120
• Publication Number:
  US 20200136058A1
• Time in Patent Office: Days
• CPC Class Codes: C07D 209/56 Ring systems containing three or more rings
• CPC Class Codes: C07D 403/04 directly linked by a ring-member-to-ring-member bond
• CPC Class Codes: C07D 403/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: C07D 403/14 containing three or more hetero rings
• CPC Class Codes: C07D 405/14 containing three or more hetero rings
• CPC Class Codes: C07D 471/04 Ortho-condensed systems
• CPC Class Codes: C07D 487/04 Ortho-condensed systems
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1018 Heterocyclic compounds
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/171 Electron injection layers
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6574 : comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes

Abstract

The present specification provides a benzocarbazole-based compound of Chemical Formula 1, and an organic light emitting device comprising the same.

Claims

1. A benzocarbazole-based compound represented by the following Chemical Formula 1:

2. The benzocarbazole-based compound of claim 1, wherein Ar1 is a dicyclic fused heteroaryl group having 2 to 30 carbon atoms comprising two or more substituted Ns.

3. The benzocarbazole-based compound of claim 1, wherein R1 to R4 are the same as or different from each other, and each independently hydrogen;

or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and at least one of R1 to R4 is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

4. The benzocarbazole-based compound of claim 1, wherein R1 to R4 are the same as or different from each other, and each independently hydrogen;

a substituted or unsubstituted phenyl group;

a substituted or unsubstituted biphenyl group;

a substituted or unsubstituted naphthyl group;

a substituted or unsubstituted fluorenyl group;

a substituted or unsubstituted spirobifluorenyl group;

a substituted or unsubstituted fluoranthene group;

a substituted or unsubstituted phenanthrene group;

or a substituted or unsubstituted triphenylene group, and at least one of R1 to R4 is a substituted or unsubstituted phenyl group;

a substituted or unsubstituted biphenyl group;

a substituted or unsubstituted naphthyl group;

a substituted or unsubstituted fluorenyl group;

a substituted or unsubstituted spirobifluorenyl group;

a substituted or unsubstituted fluoranthene group;

a substituted or unsubstituted phenanthrene group;

or a substituted or unsubstituted triphenylene group.

5. The benzocarbazole-based compound of claim 1, wherein Ar1 is represented by the following Chemical Formula 2:

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

7. An organic light emitting device comprising:

a first electrode;

a second electrode provided opposite to the first electrode; and

one or more organic material layers provided between the first electrode and the second electrode,

wherein one or more layers of the organic material layers comprise the benzocarbazole-based compound of any one of claims 1 to 6.

8. The organic light emitting device of claim 7, wherein the organic material layer comprises a hole injection layer or a hole transfer layer, and the hole injection layer or the hole transfer layer comprises the benzocarbazole-based compound.

9. The organic light emitting device of claim 7, wherein the organic material layer comprises an electron transfer layer or an electron injection layer, and the electron transfer layer or the electron injection layer comprises the benzocarbazole-based compound.

10. The organic light emitting device of claim 7, wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises the benzocarbazole-based compound.