Amine derivative and an organic electroluminescent device thereof
US11725003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jul 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/858
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present disclosure discloses an amine derivative and an organic electroluminescent device thereof, and relates to a technical field of organic photoelectric materials. The technical problem to be solved by the present disclosure is that the current light extraction material has poor thermal stability and the organic electroluminescent device has short service life. The amine derivative of the present disclosure is a diamine with a bridging group containing a fluorenyl group or a spirofluorenyl group, and the substituent group on N contains at least one benzoxazolyl group, benzothiazolyl group or benzimidazolyl group. The organic electroluminescent device of the present disclosure comprises an anode, an organic layer, a cathode and a light extraction layer, the organic layer is located between the anode and the cathode, and the light extraction layer comprises the amine derivative of Formula I according to the present disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.