Light-emitting device
US8183560B2 · kind B2 · utility
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1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6572
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a light emitting device comprising at least an emissive layer existing between an anode and a cathode, which emits light by means of electric energy. The light emitting device contains a compound having a pyrromethene skeletal structure with a specific structure or a metal complex thereof and a naphthacene derivative, and thus the light emitting device has high luminance efficiency and excellent durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.