Organic electroluminescent element
US12329028B2 · kind B2 · utility
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Key dates
| Filing date | Apr 17, 2020 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/90
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided is an organic EL device including: a light emitting layer between an anode and a cathode facing each other, in which the light emitting layer contains a first host, a second host, and a luminescent dopant, an indolocarbazole compound represented by General Formula (1) is contained as the first host, and a biscarbazole compound or a dibenzofuran compound having a dibenzofuran or dibenzothiophene ring is contained as the second host. This organic EL device has a low drive voltage, high efficiency, and high drive stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.