Organic electroluminescent element
US10340460B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2013 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | May 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/90
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided is a practically useful organic electroluminescent device (organic EL device) having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic electroluminescent device includes a light-emitting layer between an anode and a cathode opposite to each other. The light-emitting layer contains two host materials and at least one light-emitting dopant. One of the two host materials is a host material selected from an indolocarbazole compound having one indolocarbazole ring and an indolocarbazole compound having two indolocarbazole rings, and the other thereof is a host material selected from carbazole compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.