Organic electroluminescent display device
US6992437B2 · kind B2 · utility
11Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Jun 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent display device, which has a superior efficiency and life cycle characteristics and maintains constant color coordinates as compared to an existing organic electroluminescent display device, includes at least one emission layer and a charge transport layer between a first electrode and a second electrodes. The emission layer includes at least two or more dopants of a host material. The two or more dopants include a first phosphorescent dopant and a second phosphorescent dopant. Each of the first phosphorescent dopant and second phosphorescent dopant includes iridium or platinum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.