Nematic liquid crystal composition
US4031028A · kind A · utility
4Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1976 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Jun 18, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/48
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Liquid crystal compositions consisting essentially of certain N-(p-alkyloxybenzylidene)-p-alkylanilines with certain p-alkoxyphenyl-p'-alkylbenzoates and/or p-alkylphenyl-p'-cyanobenzoates exhibit a glassy structure at low temperatures, rather than a solid crystal form. The compositions also have a broad operating temperature range, suitable for use in liquid crystal displays. Liquid crystal displays incorporating these compositions maintain high contrast when exposed to low temperatures, while conventional liquid crystal compositions lose high contrast when so exposed to low temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.