Carbazole-containing materials in phosphorescent light emitting diodes
US8221905B2 · kind B2 · utility
42Cited by
21References
37Claims
0Family size
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Key dates
| Filing date | Nov 21, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Carbazole-containing compounds are provided. In particular, the compounds are oligocarbazole-containing compounds having an unsymmetrical structure. The compounds may be useful in organic light emitting devices, in particular as hosts in the emissive layer of such devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.