Organic electroluminescence device
US9203043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2013 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/103
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An organic electroluminescence device 1 includes: an anode 3, a cathode 4 opposed to the anode 3 and an emitting layer 5 provided between the anode 3 and the cathode 4. The emitting layer 5 contains first and second host materials and a luminescent material. The first host material has a partial structure represented by at least one of the following formulae (1) and (2) while the second host material has a partial structure represented by the following formula (3). Az represents a substituted or unsubstituted aromatic heterocyclic group containing a nitrogen-containing six-membered ring. WCN is an aromatic hydrocarbon group substituted by at least one cyano group (CN) or an aromatic heterocyclic group substituted by at least one cyano group (CN). Ar1 is a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted aromatic heterocyclic group, but is not an aromatic heterocyclic group containing a nitrogen-containing six-membered ring.—Az—(WCN)p (1)—Az—(CN)q (2)—Ar1—(CN)r (3)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.