A liquid crystal composition and a high-frequency component containing it

Abstract

The invention discloses a liquid crystal composition and a high-frequency component containing it. The liquid crystal composition contains 1-100% of compounds, 0-85% of compounds, and 0-50% of compounds. The invention not only has low dielectric loss and high quality factor , also has the advantage of a wide temperature range of the nematic phase, and is suitable for fields such as filters, phase shifters, phased array radars, and 5G communication networks.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and a high-frequency component containing it, and is mainly applicable to the fields of filters, adjustable frequency selection surfaces, microwave phase shifters, microwave phased array antennas and the like. Background technique [0002] Liquid crystal materials are widely used in optoelectronic display devices. In recent years, liquid crystal materials have also been proposed for use in high-frequency components, such as microwave phase shifters. For example, liquid crystal based microwave phase shifters are reported in: [0003] Muller S.et al.(2004).Tunable passive phase shifter for microwave applications using highly anisotropic liquid crystals.Microwave SymposiumDigest,2004 IEEE MTT-S International. [0004] In a microwave phase shifter, the dielectric tuning rate of the liquid crystal material determines the tuni...

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Problems solved by technology

[0020] Although the compound has a large birefringence (Δn=0.35) and good performance at high frequencies, its rotational viscosity γ 1 =1300mPa·s, causing the response speed to become slow

Moreover, the compound has a melting point of 89°C, a higher melting point leads to poor compatibility at low temperatures

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