Liquid crystal compound having ferrielectric phase and liquid crystal composition
US5728864A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Apr 12, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/2021
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid crystal compound of the formula (1) ##STR1## wherein R is a linear alkyl group having 6 to 12 carbon atoms, PA1 both X and Y are hydrogen atoms or one of X and Y is a fluorine atom and the other is a hydrogen atom, PA1 A is --CF.sub.3 or --C.sub.2 F.sub.5, PA1 m is an integer of 2 to 4, PA1 n is an integer of 2 to 4, and PA1 C* is an asymmetric carbon, having a ferrielectric phase in its phase sequence, or a ferrielectric liquid crystal composition containing the liquid crystal compound of the formula (1) having a ferrielectric phase, may be injected between substrates provided with nonlinear active elements, such as thin film transistors or diodes formed on each pixel, to form an active matrix liquid crystal display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.