Organic electroluminescent device and method for producing the same
US8471461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Apr 9, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic EL device includes an organic luminescent layer between an anode and a cathode. The organic luminescent layer comprises at least two host materials and a dopant which is a luminescent compound. The at least two host materials are identical to or substantially identical to each other in the energy value of LUMO, but on the other hand, are different from each other in the energy value of HOMO. Alternatively, the at least two host materials are identical to or substantially identical to each other in the energy value of HOMO, but on the other hand, are different from each other in the energy value of LUMO. According to the above constitution, the balance of mobility between the electrons and holes can be regulated to solve the above problem of the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.