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Quick-response liquid crystal composition with negative dielectric anisotropy and application thereof

A liquid crystal composition, anisotropic technology, applied in the field of negative dielectric anisotropic liquid crystal composition, fast response negative dielectric anisotropic liquid crystal composition, VA type display, can solve the problem of speeding up the response speed and response of liquid crystal display. Slow speed and other problems, to achieve excellent low temperature mutual solubility, reduce thickness, and improve the effect of optical anisotropy

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

[0004] The liquid crystal display provided by the prior art has the disadvantage of slow response speed. The response speed of the liquid crystal display is mainly limited by the thickness of the liquid crystal layer and the rotational viscosity of the liquid crystal. Reducing the thickness of the liquid crystal layer can effectively speed up the response speed of the liquid crystal display, which needs to be improved. Optical Anisotropy of Liquid Crystal Compositions

Method used

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  • Quick-response liquid crystal composition with negative dielectric anisotropy and application thereof
  • Quick-response liquid crystal composition with negative dielectric anisotropy and application thereof
  • Quick-response liquid crystal composition with negative dielectric anisotropy and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0073] The preparation of the liquid crystal composition in the examples of the present invention adopts the following method: the preparation of the uniform liquid crystal adopts the thermal dissolution method commonly used in the industry, and first weighs the liquid crystal compound by weight percentage with a balance, wherein there is no specific requirement for the order of weighing and adding, usually Liquid crystal compounds are weighed and mixed in order of melting point from high to low, heated and stirred at 60-100°C to make each component melt evenly, then filtered, rotary evaporated, and finally packaged to obtain the target sample.

[0074] Unless otherwise stated, percentages in this context are by weight and all temperatures are given in degrees Celsius. Use the following abbreviations:

[0075] △n is optical anisotropy (20°C, 589nm); Δε is dielectric anisotropy (25°C, 1000Hz); V 10 is the threshold voltage, which is the characteristic voltage when the relative...

Embodiment 1

[0088] The liquid crystal compound in the following weight percentages was taken, and the liquid crystal composition was prepared 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.

[0089] Table 1: The weight percent of each component in the liquid crystal composition of Example 1 and the performance parameters of the overall composition

[0090] The structural formula number of the component

Embodiment 2

[0092] The following liquid crystal compounds were taken in the following weight percentages, and the liquid crystal composition was prepared 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.

[0093] Table 2: The weight percent of each component in the liquid crystal composition of Example 2 and the performance parameters of the overall composition

[0094] components

[0095] IVA-13

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Abstract

The invention relates to a quick-response liquid crystal composition with negative dielectric anisotropy as well as an application thereof. The quick-response liquid crystal composition with negative dielectric anisotropy provided by the invention has great optical anisotropy and excellent low-temperature intersolubility as well as good high-temperature and UV (Ultraviolet) stability and is suitable for quick-response display devices with various display modes. The quick-response liquid crystal composition with negative dielectric anisotropy overcomes the defect of smaller optical anisotropy, the optical anisotropy of the composition is effectively enhanced, and the thickness of the liquid crystal layer is reduced, so that the response speed of the liquid crystal display is accelerated. The quick-response liquid crystal composition with negative dielectric anisotropy applied to the liquid crystal device can remarkably improve the problem that the liquid crystal display is slow in response and has huge application prospect and market value.

Description

technical field [0001] The present invention relates to the field of liquid crystal compositions, in particular to a negative dielectric anisotropy liquid crystal composition, more precisely, the present invention relates to a fast-response negative dielectric anisotropy liquid crystal composition and its application; The liquid crystal composition involved in the invention is mainly used for electro-optic regulation, especially for FFS displays, IPS displays and VA displays with MVA / PVA / PSVA configurations. Background technique [0002] In 1888, Austrian botanist Friedrich Reinitzer discovered the first liquid crystal material, cholesterol benzoate (cholesteryl benzoate), which is a liquid crystal, which means that a substance has both the fluidity of a liquid and a certain arrangement characteristic similar to a crystal. M.Born (1916) and K.Lichtennecker (1926) respectively discovered and studied the dielectric anisotropy of liquid crystals. In 1932, W.Kast divided the ne...

Claims

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Application Information

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IPC IPC(8): C09K19/30G02F1/1333
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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