Organic electroluminescent device with multiple phosphorescent emitters
US9484544B2 · kind B2 · utility
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Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Jul 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A multiple emitter organic light emitting diode (OLED) is provided. The OLED comprises a host having a triplet energy gap. At least one emitter having a triplet energy gap greater than the triplet energy gap of the host is doped into the host and at least one other emitter having a triplet energy gap less than the triplet energy gap of the host is also doped into the host.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.