Liquid crystal composition used in element for phase control of electromagnetic wave signal
US11492551B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 8, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Sep 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/3422
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan δ in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.