# US 2014/0151664 A1 · Benzoimidazole derivative, organic electroluminescence material and organic electroluminscence device

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- Number: US 2014/0151664 A1
- Document ID: US20140151664A1
- Status: Published application
- Kind: A1
- Application number: 14/093,759
- Filed: 2013-12-02
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Shuri SATO
- Web page: https://patentgrep.com/patent/US20140151664A1

## CPC

- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- C09K 11/06: containing organic luminescent materials
- C09K 2211/1007: Non-condensed systems
- C09K 2211/1029: containing one nitrogen atom as the heteroatom
- C09K 2211/1044: containing two nitrogen atoms as heteroatoms
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 50/15: Hole transporting layers
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A benzoimidazole derivative includes two carbazole substituents connected to each other, and a benzoimidazole substituent connected to a benzene ring of one of the carbazole substituents through an aryl group.

## Claims

### Claim 1

A benzoimidazole derivative, comprising:
two carbazole substituents connected to each other, and
a benzoimidazole substituent connected to a benzene ring of one of the carbazole substituents through an aryl group.

### Claim 2 (depends on 1)

The benzoimidazole derivative as claimed in claim 1, wherein the benzoimidazole derivative is represented by following Formula 1:
wherein, R1 to R5 represent an alkyl group, an aryl group, or a heteroaryl group that replaces a hydrogen of a respective benzene ring,
k, l, m, p, and q each independently represent an integer of 0 to 4, and denote a number of the R1, R2, R3, R4, and R5, respectively,
when any of k, l, m, p, and q is greater than or equal to 1, each of (R1)1 through (R1)k, (R2)1 through (R2)1, (R3)1, through (R3)m, (R4)1, through (R4)p, or (R5)1, through (R5)q, are the same or different.

### Claim 3 (depends on 1)

An organic electroluminescence device, comprising:
a positive electrode,
a negative electrode, and
organic thin layers between the positive electrode and the negative electrode,
wherein at least one layer of the organic thin layers includes the benzoimidazole derivative described in claim 1.

### Claim 4 (depends on 3)

The organic electroluminescence device as claimed in claim 3, wherein the organic thin layer including the benzoimidazole derivative is at least one layer selected from an emission layer, an intermediate layer, and a hole transport layer.

### Claim 5 (depends on 4)

The organic electroluminescence device as claimed in claim 4, wherein:
the organic thin layer including the benzoimidazole derivative is the emission layer, and
a host material of the emission layer includes the benzoimidazole derivative.

### Claim 6 (depends on 4)

The organic electroluminescence device as claimed in claim 4, wherein:
the organic thin layer including the benzoimidazole derivative is the intermediate layer, and
the intermediate layer does not include a dopant.

### Claim 7 (depends on 3)

A lighting system, comprising the organic electroluminescence device as claimed in claim 3.

### Claim 8 (depends on 3)

An organic electroluminescence display, comprising the organic electroluminescence device as claimed in claim 3.