Compound, organic light-emitting element including the same, display panel and display device

Patent metadata

Field	Value
Publication number	US-12048245-B2
Application number	US-202017011997-A
Country	US
Kind code	B2
Filing date	Sep 3, 2020
Priority date	Jun 16, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

Provided are a compound, an organic light-emitting element including the same, a display panel and a display device. The compound has a structure represented by Formula I. The organic light-emitting element includes an anode, a cathode and an organic thin film layer disposed between the anode and the cathode; where the organic thin film layer includes a light-emitting layer, and further includes any one or a combination of at least two of a hole transport layer, an electron blocking layer and an auxiliary light-emitting layer, and at least one of the hole transport layer, the electron blocking layer and the auxiliary light-emitting layer contains at least one of the compounds. The compound has a relatively shallow HOMO energy level, a relatively shallow LUMO energy level, a relatively high triplet energy level, an appropriate hole mobility, a relatively high T g , a large molecular torque and good thermal stability.

First claim

The invention claimed is:

1. A compound, having a structure represented by Formula V:

R 3 and R 6 are each independently selected from

R 7 and R 8 are each independently selected from any one of C1 to C20 alkyl, C1 to C20 alkoxy, C1 to C20 alkylthio or following groups:

r and s are each independently 0, 1 or 2;
wherein R 11 , R 12 and R 13 are each independently selected from any one of C to C20 alkyl, C1 to C20 alkoxy, C1 to C20 alkylthio or phenyl;
u and v are each independently 0, 1 or 2;
* and #each represent a position where groups are joined;
n 3 and n 6 are each independently an integer from 0 to 4, and n 3 and n 6 are not 0 at the same time;
L 1 and L 2 are each independently selected from a single bond; and
X and Y are each independently selected from any one of a single bond or an O atom.

2. The compound according to claim 1 , wherein L 1 and L 2 are each independently a single bond,

wherein * represents a position where groups are joined.

3. The compound according to claim 1 , wherein n 3 is equal to no, and R 3 and R 6 are same groups.

4. The compound according to claim 1 , wherein n 4 and n 5 are each independently an integer from 1 to 4, and R 4 and R 8 are each independently selected from any one of C1 to C5 alkyl, C1 to C5 alkoxy, C1 to C5 alkylthio or phenyl.

5. The compound according to claim 1 , wherein X is the same as Y.

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

7. 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 a light-emitting layer, and further comprises any one or a combination of at least two of a hole transport layer, an electron blocking layer and an auxiliary light-emitting layer:
wherein at least one of the hole transport layer, the electron blocking layer and the auxiliary light-emitting layer contains at least one of the compounds according to claim 1 .

8. The organic light-emitting element according to claim 7 , wherein the organic thin film layer further comprises any one or a combination of at least two of a hole injection layer, a hole blocking layer, an electron transport layer and an electron injection layer.

9. A display panel, comprising the organic light-emitting element according to claim 7 , the display panel can be used in a display device.

Assignees

• Wuhan Tianma Micro Electronics Co Ltd
• Wuhan Tianma Microelectronics Co Ltd Shanghai Branch

Inventors

• Ran Quan
• Gao Wei
• Niu Jinghua
• Zhang Lei
• Dai Wenpeng

Classifications

• H10K50/181

  Electron blocking layers · CPC title

• H10K85/657 Primary

  Polycyclic condensed heteroaromatic hydrocarbons · CPC title

• C07D495/10 Primary

  Spiro-condensed systems · CPC title

• H10K85/6576

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

• H10K85/6574

  comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes · CPC title