Organic light-emitting device having a color-neutral dopant in a hole-transport layer and/or in an electron-transport layer
US6565996B2 · kind B2 · utility
31Cited by
17References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
Abstract
Disclosed are organic electroluminescent devices comprising a substrate, an anode and a cathode disposed over the substrate, an emission layer (EML) disposed between the anode and the cathode, a hole-transport layer (HTL) disposed between the anode and the emission layer, and an electron-transport layer (ETL) disposed between the cathode and the emission layer. A sublayer of the HTL, the ETL, or both the HTL and the ETL comprises a derivative of anthracene as a color-neutral dopant, the sublayer being adjacent to the EML. A color-neutral dopant is a dopant whose presence does not alter the electroluminescent color of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.