Electroluminescent device with improved cathode
US4885211A · kind A · utility
537Cited by
18References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole transporting zone, an organic electron transporting zone, and a cathode. The cathode is comprised of a layer of a plurality of metals other than alkali metals, at least one of said metals having a work function of less than 4 eV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.