Electro-optical materials and light modulator devices containing same
US5186865A · kind A · utility
47Cited by
2References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 3, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Oct 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3617
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Azo-type optically active compounds and polymers are provided based on compounds of the general structure EQU [substituted aryl]--N.dbd.N--[substituted aryl] wherein aryl substituents are introduced which hinder or prohibit rotation around the single bonds of the --N.dbd.-- central moiety (as well as around certain other single bonds), to provide "planarized" structures having improved optically active properties, especially electro-optically active properties. These compounds and polymers find use in optically active waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.