Film forming composition and organic electroluminescent device
US8053973B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 8, 2006 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | May 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/135
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A film-forming composition that attains an improvement in the solubility of a hole-injecting/transporting material and/or an electron-accepting compound and has a drying rate appropriate for stable formation of a uniform coating film, being suitable for the formation of a hole-injecting/transporting layer. This composition comprises a hole-injecting/transporting material and/or an electron-accepting compound and a liquid in which the hole-injecting/transporting material and/or the electron-accepting compound are dissolved. This liquid mainly contains a solvent whose molecule has an aromatic ring and/or an aliphatic ring and an oxygen atom and which has either a boiling point of at least 200° C. or a vapor pressure of 1 torr or lower at 25° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.