Organic EL device
US8294142B2 · kind B2 · utility
35Cited by
1References
23Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 4, 2008 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Mar 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An organic EL device includes: an anode; a cathode and an organic thin-film layer provided between the anode and the cathode. The organic thin-film layer includes: a fluorescent-emitting layer containing a fluorescent host and a fluorescent dopant; and a phosphorescent-emitting layer containing a first phosphorescent host and a first phosphorescent dopant. The first phosphorescent dopant emits light by receiving exited triplet energy transferred from the fluorescent host. The fluorescent host has a substituted or unsubstituted polycyclic fused aromatic skeleton and has an exited triplet energy gap of 2.10 eV to 3.00 eV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.