Electro-optic device
US4141627A · kind A · utility
12Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1977 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Jan 6, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel dyes of the formula ##STR1## wherein X can be hydrogen, alkyl, alkoxy, cyano, nitro, dialkylamino, halogen or --N.dbd.N--Y and Y can be phenyl, phenyl substituted in the para position with an alkyl, alkoxy, cyano, nitro, dialkylamino or halogen group, or a heterocyclic ring, can be added to known liquid crystal compositions to impart color to the mixtures and improved contrast to a liquid crystal electro-optic device containing such mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.