Organic electroluminescence device
US5346772A · kind A · utility
8Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Apr 27, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent device comprises an anode, a positive-hole transport layer of organic compound, an emitting layer of organic compound, and a cathode which are laminated in sequence, wherein the emitting layer comprises a pyrimidopyrimidine derivative. This device emits with a high luminance and high emission efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.