Organic electro-luminescent device
US6872476B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Apr 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electro-luminescent device comprising one or more organic compound layers sandwiched between a pair of electrodes, at least one of which electrodes is transparent or semi-transparent, wherein at least one of the one or more organic compound layers comprises at least one polyurethane compound having a repeating unit represented by the following general formula (I). At least one of A and B in general formula (I) represents a divalent group represented by one of the following general formulae (II) to (VI).—(OCONH-A-NHCOO—B)n— General Formula (I)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.