# US 2020/0403159 A1 · Compound, and organic light-emitting element, display panel and display device including the same

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- Number: US 2020/0403159 A1
- Document ID: US20200403159A1
- Status: Published application
- Kind: A1
- Application number: 17/011,988
- Filed: 2020-09-03
- Published: 2020-12-24
- Earliest claimed: 2020-06-10
- Assignees: Shanghai Tianma Am-Oled Co., Ltd.
- Applicants: Shanghai Tianma AM-OLED Co., Ltd.
- Inventors: Lei ZHANG; Wei Gao; Jinghua Niu; Wenpeng Dai; Quan Ran; Xia Li
- Web page: https://patentgrep.com/patent/US20200403159A1

## CPC

- C07D 401/14: containing three or more hetero rings
- C07D 213/16: containing only one pyridine ring
- C07D 251/24: to three ring carbon atoms
- C07D 401/04: directly linked by a ring-member-to-ring-member bond
- C07D 401/10: linked by a carbon chain containing aromatic rings
- C07D 403/10: linked by a carbon chain containing aromatic rings
- C07D 405/04: directly linked by a ring-member-to-ring-member bond
- C07D 405/10: linked by a carbon chain containing aromatic rings
- C07D 405/14: containing three or more hetero rings
- C09K 11/06: containing organic luminescent materials
- H10K 85/622: {containing four rings, e.g. pyrene}
- H10K 85/626: {containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene}
- H10K 85/654: {comprising only nitrogen as heteroatom (H10K85/652 takes precedence)}
- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- H10K 85/6574: {comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes}
- C09K 2211/1018: Heterocyclic compounds
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 50/13: comprising stacked EL layers within one EL unit
- H10K 50/15: Hole transporting layers
- H10K 50/16: Electron transporting layers
- H10K 50/165: comprising dopants
- H10K 50/171: {Electron injection layers}
- H10K 50/18: Carrier blocking layers
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Provided are a compound having a structure represented by Formula I, and an organic light-emitting element, a display panel and a display device including the same. The organic light-emitting element includes an anode, a cathode and an organic thin film disposed between the anode and the cathode; where the organic thin film includes any one or a combination of at least two of a light-emitting layer, an electron transport layer and a hole blocking layer, and includes at least the light-emitting layer, and at least one of the light-emitting layer, the electron transport layer or the hole blocking layer contains at least one of the compounds. The compound has a relatively deep LUMO energy level, a relatively deep HOMO energy level, a relatively high triplet energy level, a high electron mobility, a high Tg, and good thermal and chemical stability, and is not easy to crystallize.

## Claims

### Claim 1

A compound, having a structure represented by Formula I:
wherein L1 and L2 are each independently selected from any one of a single bond, substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl;
A1 and A2 are each independently selected from any one of substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl, and at least one of A1 and A2 is selected from any one of group
wherein # represents a position where the group is joined;
wherein X1, X2 and X3 are each independently a N atom or —CH, and at least one of X1, X2 and X3 is a N atom;
Ar1 and Ar2 are each independently selected from any one of substituted or unsubstituted C6 to C40 aryl or substituted or unsubstituted C3 to C40 heteroaryl; and
when a substituent is present in the above groups, the substituent is methyl, ethyl, isopropyl, t-butyl, methoxy, cyano, phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, carbazolyl, dibenzofuryl or dibenzothienyl.

### Claim 2 (depends on 1)

The compound according to claim 1, having a structure represented by Formula II:

### Claim 3 (depends on 1)

The compound according to claim 1, wherein L1 and L2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene.

### Claim 4 (depends on 1)

The compound according to claim 1, wherein A1 and A2 are each independently selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl or
and at least one of A1 and A2 is selected from any one of

### Claim 5 (depends on 1)

The compound according to claim 1, wherein Ar1 and Ar2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.

### Claim 6 (depends on 1)

The compound according to claim 1, wherein the group
wherein # represents the position where the group is joined.

### Claim 7 (depends on 2)

The compound according to claim 2, wherein L1 and L2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene.

### Claim 8 (depends on 2)

The compound according to claim 2, wherein A1 and A2 are each independently selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl or
and at least one of A1 and A2 is selected from any one of

### Claim 9 (depends on 2)

The compound according to claim 2, wherein Ar1 and Ar2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.

### Claim 10 (depends on 2)

The compound according to claim 2, wherein the group
wherein # represents the position where the group is joined.

### Claim 11 (depends on 2)

The compound according to claim 2, having a structure represented by Formula III or Formula IV:
wherein L1 and L2 are each independently selected from any one of a single bond, phenylene, biphenylene, naphthylene, anthrylene, furylene, thienylene, pyridylene, pyrimidylene, triazinylene or fluorenylene;
A1 is selected from any one of phenyl, naphthyl, anthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl, spirofluorenyl,
and
Ar1 and Ar2 are each independently selected from any one of phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, pyridyl, pyrimidyl, triazinyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or spirofluorenyl.

### Claim 12 (depends on 11)

The compound according to claim 11, having a structure represented by Formula IV;
wherein L1 and L2 are each independently a single bond, phenylene or naphthylene;
A1 is selected from any one of phenyl, naphthyl, pyridyl, dibenzofuryl, dibenzothienyl, carbazolyl, fluorenyl or
Ar1 and Ar2 are each independently selected from any one of phenyl, biphenyl, pyridyl, dibenzofuryl, dibenzothienyl, carbazolyl or fluorenyl.

### Claim 13 (depends on 1)

The compound according to claim 1, wherein the compound is selected from any one of following compounds H1 to H81:

### Claim 14 (depends on 1)

An organic light-emitting element, comprising an anode, a cathode and an organic thin film layer disposed between the anode and the cathode; wherein the organic thin film layer comprises any one or a combination of at least two of a light-emitting layer, an electron transport layer and a hole blocking layer, and comprises at least a light-emitting layer;
wherein at least one of the light-emitting layer, the electron transport layer or the hole blocking layer contains at least one of the compounds each according to claim 1, wherein the compound having a structure of Formula I.

### Claim 15 (depends on 14)

The organic light-emitting element according to claim 14, wherein the organic thin film layer further comprises any one or a combination of at least two of a hole injection layer, a hole transport layer, an electron blocking layer and an electron injection layer.

### Claim 16 (depends on 14)

The organic light-emitting element according to claim 14, wherein the light-emitting layer comprises a host material and a light-emitting material, wherein the host material of the light-emitting layer comprises any one or a combination of at least two of the compounds each having a structure of Formula I.

### Claim 17 (depends on 14)

The organic light-emitting element according to claim 14, wherein the electron transport layer comprises a material selected from any one or a combination of at least two of the compounds each having a structure of Formula I; or
the electron transport layer comprises a host material and a guest material, wherein the host material of the electron transport layer is selected from any one or a combination of at least two of the compounds each having a structure of Formula I.

### Claim 18 (depends on 10)

The organic light-emitting element according to claim 10, wherein the hole blocking layer comprises a material selected from any one or a combination of at least two of the compounds each having a structure of Formula I, and the light-emitting layer comprises a light-emitting material having a lowest triplet energy level lower than the lowest triplet energy level of the compound.

### Claim 19 (depends on 14)

A display panel, comprising the organic light-emitting element according to claim 14, wherein the display panel is optionally used in a display device.