Organic electroluminescent element
US11647666B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 25, 2018 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Mar 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/171
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a light emitting layer material comprising: a polycyclic aromatic compound (1) in which a plurality of aromatic rings are linked by a boron atom and a oxygen atom or a nitrogen atom; and a specific anthracene-based compound (3) that achieves optimum light-emission characteristics in combination with said polycyclic aromatic compound. With this light emitting layer material having optimum light emitting characteristics, it is possible to provide an excellent organic EL element.Ring A to ring C are an aryl ring or the like, Y1 is B (boron), X1 and X2 are —O— or >N—R (provided that at least one is —O—), X is a group represented by formula (3-X1), (3-X2), or (3-X3), Y is —O—, —S— or >N—R29, R29 is a hydrogen atom or an optionally substituted aryl, Ar1 to Ar4 are phenyl, a group represented by formula (4), or the like, and both Ar1 and Ar3 do not simultaneously represent a phenyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.