Organic light-emitting device
US7651790B2 · kind B2 · utility
6Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
An organic light-emitting device is provided that includes an emission layer containing a phosphorescent dopant and a bipolar phosphorescent host interposed between a first electrode and a second electrode. The bipolar phosphorescent host is a compound represented by formula 1:A—C—B (1)where A is a hole transport unit, B is an electron transport unit, and C is a bond or a linking group. The bipolar compound can transport both holes and electrons. The organic light-emitting device has high efficiency and a long lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.