Electroluminescent device having electroluminescent compound and liquid crystalline compound
US5748271A · kind A · utility
29Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Aug 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/868
Abstract
A description is given of an electroluminescent device (1) having an LED structure, which is composed of an active layer (7) of oriented liquid-crystalline and electroluminescent compounds and a transparent positive electrode layer (5) which is preferably made from an electroconductive polymer. By previously rubbing the electrode layer (5) in one direction with a velvet cloth, an orientation is induced in the molecules in the active layer (7), the orientation being frozen by cooling or polymerization. The electroluminescent device (1) emits polarized light whose direction of polarization is parallel to the direction of rubbing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.