Organic El device
US5981092A · kind A · utility
88Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Mar 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic EL device of the invention includes an inorganic material layer with a resistivity of less than 20 .OMEGA.-cm disposed between an electrode and a light emitting layer. The inorganic material layer contains at least one of indium oxide, tin oxide, and zinc oxide as a primary component, which is the same material as an anode, and at least one of silicon and germanium as an auxiliary component. This improves physical properties at the electrode-organic layer interface and restrains generation of dark spots, establishing an organic EL device featuring a long life, high efficiency and low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.