Organic light emitting devices containing a metal complex of 5-hydroxy-quinoxaline as a host material
US5861219A · kind A · utility
86Cited by
1References
39Claims
0Family size
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Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
The present invention is directed to organic light emitting devices comprised of an electroluminescent layer containing a host material comprised of a metal complex of (5-hydroxy)quinoxaline: ##STR1## wherein M is Al, Ga, In, Zn or Mg, with n=3, if M is Al, Ga or In and n=2, if M is Zn or Mg, and to a method for fabricating such devices. Further disclosed for use in the electroluminescent layer of organic light emitting devices are dopant materials comprised of a bisphenyl-squarilium compound, an indigo dye compound or a fullerene compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.