Organic electroluminescence device
US6652995B2 · kind B2 · utility
3Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Dec 9, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
Abstract
An organic electroluminescence device contains a hole transporting polyesters represented by the following formulae (I-1) or (I-2): where Ar represents a substituted or unsubstituted monovalent polynulear aromatic ring having a number of aromatic rings of 3 to 10, or a substituted or unsubstituted monovalent condensed aromatic ring having a number of aromatic rings of from 2 to 10, X represents a substituted or unsubstituted bivalent aromatic group, T represents a bivalent linear hydrocarbon group of 1 to 6 carbon atoms or bivalent branched hydrocarbon group of 2 to 20 carbon atoms and k represents 0 or 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.