Organic light emitting device
US7998597B2 · kind B2 · utility
10Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Apr 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/626
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide an organic light emitting device having high efficiency and high luminance by making a contrivance to suppress the leakage of an electron or of an exciton, an organic light emitting device of the present invention includes two hole transporting layers having tertiary amine compounds different from each other in structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.