Smectic liquid crystal material and liquid crystal optical element
US6245258A · kind A · utility
3Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Apr 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/46
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A smectic liquid crystal material which comprises (1) an antiferroelectric liquid crystal material and/or a liquid crystal material ferroelectric phase and (2) a liquid crystal material having a smectic C phase. The smectic liquid crystal material may be used in a liquid crystal optical element having a spontaneous polarization of 0.06 nC/cm.sup.2 to 96 nC/cm.sup.2. The smectic material has a low spontaneous polarization value and the curve of light transmittance to applied voltage for the smectic material has a V-shaped characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.