Method of making electroluminescent devices having varying electrical and/or optical properties
US6558219B1 · kind B1 · utility
29Cited by
8References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Feb 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A method of forming an electroluminescent device, including the steps of forming a first charge carrier injecting layer for injecting charge carriers of a first polarity, forming an organic charge carrier transport layer over the first charge carrier injecting layer, the transport layer having an electronic and/or optical property which varies across the thickness of the transport layer, forming an organic light emissive layer over the transport layer, and forming a second charge carrier injecting layer over the light emissive layer for injecting charge carriers of a second polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.