Light emitting device with stack of OLEDS and phosphor downconverter
US5874803A · kind A · utility
318Cited by
3References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Sep 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/3026
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Monochromatic and multicolor light emitting devices which make use of phosphor layers to downconvert light emitted from organic light emitting materials into different, more desired colors. The light emitting devices of the present invention are used in a variety of applications to provide displays with high brightnesses and efficiencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.