Nematic liquid crystal composition and liquid crystal display element using same
US9175221B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2013 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13712
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a nematic liquid crystal composition having a negative dielectric anisotropy with an absolute value from 2 to 8 at 25° C., the composition containing at least one liquid crystal compound having a negative dielectric anisotropy with an absolute value of 4 or more and at least one antioxidant, wherein the amount of the liquid crystal compound is not less than 3%; the present invention also provides a liquid crystal display device using such a liquid crystal composition. The present invention can give a liquid crystal composition having a negative Δ∈, a liquid crystal phase in a wide temperature range, a small viscosity, a good solubility at low temperature, a high specific resistance and voltage holding ratio, and a stability to heat and light; hence, use of this liquid crystal composition enables a highly responsive liquid crystal display device, such as a VA type and a PSVA type, which has an excellent display quality with a reduction in defective display such as droplet stains and linear afterimages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.