OLED efficiency by utilization of different doping concentrations within the device emissive layer
US7151339B2 · kind B2 · utility
7Cited by
15References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2004 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jan 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
Abstract
The present invention relates to organic light emitting devices (OLEDs), and more specifically to an OLED device structure that provides improved performance characteristics, such as increased luminous efficiency and improved lifetime. The OLEDs of present invention comprise an emissive layer in which an emissive dopant is non-uniformly doped into a host material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.