Thiazole Liquid Crystal Compound for High-Frequency Phase Shifters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a compound with a large refractive index anisotropy (Δn) and high compatibility with liquid crystal compositions, especially for applications requiring large dielectric constant anisotropy in high-frequency regions, such as antennas and phase shifters, as existing compounds like those with a thienothiophene structure suffer from low compatibility and insufficient phase modulation characteristics.
Innovation Solution
A specific compound represented by the general formula (I) is developed, featuring a hydrocarbon ring or heterocycle structure with specific substituents and linking groups, which enhances refractive index anisotropy and dielectric constant anisotropy, improving compatibility and phase modulation capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a compound with thienothiophene structure is used to achieve large refractive index anisotropy, then the refractive index anisotropy is improved, but the compatibility with liquid crystal composition deteriorates and precipitation occurs during long-term storage
Solution Approach 1:
The patent modifies the molecular structure parameters by replacing the thienothiophene structure with a thiazole structure and adjusting the substituents (R1, A1, A2, Z1, Z2, Z3, Ax) to achieve the desired refractive index anisotropy while improving compatibility with liquid crystal compositions and preventing precipitation during long-term storage
Solution Approach 2:
The patent creates a composite liquid crystal composition by combining the newly developed compound (formula I) with other liquid crystal compounds, achieving synergistic effects that provide both large refractive index anisotropy and high stability without precipitation
2Force
If a compound with thienothiophene structure and thioisocyano group is used, then the refractive index anisotropy is improved, but the dielectric constant anisotropy in high frequency region deteriorates and phase modulation characteristics become insufficient
Solution Approach 1:
The patent changes the molecular structure from thienothiophene with thioisocyano group to thiazole structure with specific substituents, optimizing the balance between refractive index anisotropy and dielectric constant anisotropy in the high frequency region to achieve sufficient phase modulation characteristics
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compound exhibits a large refractive index anisotropy and high compatibility, making it suitable for high-frequency phase shifters, phased array antennas, and other applications, while expanding the liquid crystal phase temperature range and maintaining high compatibility.
Implementation Method 1
an antenna using a liquid crystal composition is capable of changing transmission-reception directions of radio waves by operating liquid crystal
Implementation Method 2
A refractive index anisotropy Δn of liquid crystal compositions required for these applications is, for example, about 0.4
Implementation Method 3
The compound of the present invention has a large refractive index anisotropy Δn and a high compatibility with a liquid crystal composition, and exhibits a large dielectric constant anisotropy in a high frequency region
Implementation Method 4
exhibits a large dielectric constant anisotropy (Δε) in a high frequency region
Data Source
AI summary
The present invention provides a compound represented by the following general formula (I), and provides a liquid crystal composition containing the compound and a device using the liquid crystal composition. The compound of the present invention has a large refractive index anisotropy Δn and a high compatibility with a liquid crystal composition, and exhibits a large dielectric constant anisotropy in a high frequency region; and therefore, it is useful as a material for a device of a high-frequency phase shifter, a phased array antenna, an image recognition device, distance measuring equipment, a liquid crystal display device, a liquid crystal lens, a birefringent lens for stereoscopic image display, or the like.