Electroluminescent device having an organic layer including polyimide
US6497969B2 · kind B2 · utility
15Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1998 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Aug 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An electroluminescent device comprising a transparent electrode layer, a metallic electrode layer, and an organic interlayer disposed between, and in close contact with, the electrode layers wherein the organic interlayer is comprised of an organic luminescent layer, an optional hole transport layer and an optional electron transport layer, and contains a polyimide of formula (I): wherein A is a moeity derived from a dianhydride compound; B is a moiety derived from a diamine compound; and n is an integer of 2 or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.