Organic electroluminescent device
US10361378B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 21, 2013 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Apr 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/90
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided is a practically useful organic EL element having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic EL element has a light-emitting layer and any other organic layer between an anode and a cathode opposite to each other. The light-emitting layer contains at least two host materials and at least one light-emitting dopant. At least one of the host materials is a host material selected from compounds each having one or two indolocarbazole skeletons, and at least one of the other host materials is a host material selected from carbazole compounds each substituted with a dibenzofuran or a dibenzothiophene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.