Organic light-emitting device
US11335872B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Sep 6, 2017 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | May 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
An organic light emitting device having an exciton generation layer that contains a compound having a difference between the lowest excited singlet energy level ES1 and the lowest excited triplet energy level ET1 thereof of 0.3 eV or less, or an exciplex to emit delayed fluorescence, and a light emitting layer that contains a light emitting material has a high efficiency and a long lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.