Organic EL element and method of producing the same
US6187457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/824
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides an organic electroluminescent light emitting device comprising essentially comprising a substrate, a hole injecting electrode formed on at least said substrate, a light emitting layer and an electron injecting electrode containing a constituting material having a work function of up to 4 eV. The electron injecting electrode has a sealing film on a side thereof not opposite to the substrate. This sealing film contains one or two or more of an oxide, a nitride and a carbide of the constituting material for the electron injecting electrode, and so can be relatively easily formed continuously from the electron injecting electrode without any dedicated equipment for sealing films, while maintaining a high sealing effect. The invention also provides a process of producing such an organic electroluminescent light emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.