White light emitting OLEDs from combined monomer and aggregate emission
US6863997B2 · kind B2 · utility
113Cited by
18References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Dec 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.