Organic electroluminescence device
US7968904B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2007 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/633
Abstract
There is provided an organic electroluminescence device that is high in light emitting efficiency and excellent in driving durability, which contains at least a light emitting layer between an anode and a cathode opposing each other, and further has either 1) an organic layer containing at least a first acceptor and a second acceptor between the light emitting layer and the anode, in which the first acceptor is a metal compound and the second acceptor is an organic compound which does not contain a metal, or 2) an organic layer containing a metal oxide as an acceptor between the light emitting layer and the anode, in which a concentration of the metal oxide in the organic layer is varied in a thickness direction and the concentration is lower in a portion near the light emitting layer than a portion near the anode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.