Organic electroluminescence element and compound used therein
US9660198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2012 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescence element in which a compound represented by the general formula below is used in a light-emitting layer exhibits a high emission efficiency and is inexpensive to provide. At least one of R1 to R8 and R17 represent an electron-donating group and the others represent a hydrogen atom; at least one of R9 to R16 represent an electron-withdrawing group that does not have an unshared electron pair at the α-position thereof and the others represent a hydrogen atom; Z represents a single bond or >C═Y; Y represents O, S, C(CN)2 or C(COOH)2; provided that when Z is a single bond, then at least one of R9 to R16 is an electron-withdrawing group that does not have an unshared electron pair at the α-position thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.