Organic electroluminescent materials and devices
US11201299B2 · kind B2 · utility
0Cited by
33References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2018 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Jul 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention includes novel heterocyclic materials for use as blue phosphorescent materials in OLED devices. The novel materials include two fused 5-membered aromatic or pseudoaromatic rings, which are bonded with 6 membered aromatic rings to serve as chelation ligands for a transition metal. The novel materials were determined computationally to have appropriate triplet energies for use as blue emitters and to possess sufficient chemical stability for use in devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.