Light-emitting device and 9.9 biphenyl fluorene materials therefor
US8878163B2 · kind B2 · utility
2Cited by
21References
31Claims
0Family size
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Key dates
| Filing date | Nov 18, 2008 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jan 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/14
Abstract
An organic light-emitting device comprising an anode; a hole transport layer; a light-emitting layer; and a cathode, characterized in that the hole transport layer comprises a polymer having a repeat unit comprising a 9,9 biphenyl fluorene unit wherein the 9-phenyl rings are independently and optionally substituted and the fluorene unit is optionally fused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.