Organic electroluminescent device with stabilizing fused metal particle cathode
US5073446A · kind A · utility
174Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jul 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/258
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent device is disclosed which is protected from dark spot formation. The device is comprised of, in sequence, a support, an anode, an organic electroluminescent medium, and a cathode. The cathode is comprised of an electron injecting layer contacting the organic electroluminescent medium containing a plurality of metals at least one of which has a work function of less than that of indium. The cathode is comprised of a layer of fused metal particles containing at least 80 percent of indium and having a mean diameter of less the 1 .mu.m and a coefficient of variation of less than 20 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.