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Liquid crystal composition containing tetrahydrofuran compounds and application thereof

A technology of liquid crystal composition and tetrahydrofuran, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as high viscosity, low resistivity, poor light stability and thermal stability

Active Publication Date: 2014-05-07
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the liquid crystal material itself (such as: high viscosity, low resistivity, poor light stability and thermal stability, etc.), TFT-LCD still has many problems such as insufficient response, low voltage and insufficient charge retention. defect

Method used

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  • Liquid crystal composition containing tetrahydrofuran compounds and application thereof
  • Liquid crystal composition containing tetrahydrofuran compounds and application thereof
  • Liquid crystal composition containing tetrahydrofuran compounds and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0116] The preparation of liquid crystal composition in the embodiment of the present invention all adopts following method:

[0117] The preparation of uniform liquid crystal adopts the thermal dissolution method commonly used in the industry. First, the liquid crystal compound is weighed by weight percentage with a balance. There is no specific requirement for the order of weighing and adding. Usually, the liquid crystal compound is weighed and mixed in order of melting point from high to low. Heat and stir at 60-100°C to make each component melt evenly, then filter, rotary evaporate, and finally package to obtain the target sample.

[0118] Unless otherwise stated, percentages in this context are by weight and all temperatures are given in degrees Celsius. Also, the following abbreviations are used: Δn is optical anisotropy (20°C), Δε is dielectric constant anisotropy (25°C, 1000Hz); V 10 is the threshold voltage, which is the characteristic voltage when the relative trans...

Embodiment 1

[0132] Take the liquid crystal compound in the following weight percentages, and prepare the liquid crystal composition by the above-mentioned preparation method. The specific proportion and the performance parameters of the obtained liquid crystal composition (not the individual components) are shown in Table 1:

[0133] Table 1: The weight percent of each component in the liquid crystal composition of Example 1 and the performance parameters of the overall composition

[0134] the code

Embodiment 2

[0136] Take the liquid crystal compound in the following weight percentages, and prepare the liquid crystal composition by the above-mentioned preparation method. The specific proportion and the performance parameters of the obtained liquid crystal composition (not the individual components) are shown in Table 2:

[0137] Table 2: The weight percent of each component in the liquid crystal composition of Example 2 and the performance parameters of the overall composition

[0138] the code

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Abstract

The invention relates to a liquid crystal composition containing tetrahydrofuran compounds and application thereof. Through reasonable matching and synergistic effect of all components, the liquid crystal composition, in comparison with the prior art, has the advantages of low viscosity, high electrical resistivity, proper optical anisotropism, higher electric anisotropism, excellent optical stability and thermal stability, good low-temperature intersolubility and high response speed, especially shows excellent low-temperature response speed, and is capable of obviously improving the display effect of a TN (Twisted Nematic), IPS (In-Plane Switching) or FFS (Fringe Field Switching)-mode liquid crystal display which uses the liquid crystal composition; therefore, the liquid crystal composition can be applied to fast-response liquid crystal display devices of various display modes and has huge application prospect and economic value.

Description

technical field [0001] The present invention relates to the field of liquid crystal compositions, in particular, to a liquid crystal composition containing tetrahydrofuran compounds, and the application of the liquid crystal composition; the liquid crystal composition involved in the present invention is aimed at electro-optical properties, and is especially suitable for TN / In TFT displays such as IPS / FFS. Background technique [0002] At present, liquid crystal materials are widely used in the field of information display, and at the same time, some progress has been made in the application of optical communication (S.T.Wu, D.K.Yang. Reflective Liquid Crystal Displays. Wiley, 2001). In recent years, the application fields of liquid crystal compounds have been significantly expanded to various display devices, electro-optic devices, electronic components, sensors, etc. For this reason, researchers have proposed liquid crystal compounds with many different structures, espec...

Claims

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Application Information

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IPC IPC(8): C09K19/44G02F1/1333
Inventor 陈海光陈卯先杭德余姜天孟田会强储士红贺树芳孙丽丽张琳
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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