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A kind of highly negative dielectric anisotropy liquid crystal mixture with high birefringence and low viscosity and its application

A dielectric anisotropy, high birefringence technology, applied in liquid crystal materials, nonlinear optics, instruments, etc., can solve the problem that the comprehensive performance of liquid crystal devices cannot meet the needs, achieve good mutual solubility, improve performance, and reduce driving voltage. Effect

Active Publication Date: 2016-06-29
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, liquid crystal mixtures with negative dielectric anisotropy are rare in the market, and the comprehensive performance of liquid crystal devices still cannot meet the needs. New liquid crystal materials are needed to continuously improve the comprehensive performance of liquid crystal devices.

Method used

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  • A kind of highly negative dielectric anisotropy liquid crystal mixture with high birefringence and low viscosity and its application
  • A kind of highly negative dielectric anisotropy liquid crystal mixture with high birefringence and low viscosity and its application
  • A kind of highly negative dielectric anisotropy liquid crystal mixture with high birefringence and low viscosity and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The components and their proportions in the liquid crystal mixture are shown in Table 3 below:

[0042] Composition and proportioning of liquid crystal mixture in Table 3 embodiment one

[0043]

[0044]

[0045] The performance test parameters of the liquid crystal mixture of embodiment one are as shown in table 4:

[0046] The performance test data of the liquid crystal mixture of table 4 embodiment one

[0047] Performance parameters

[0048] no o (589nm,25℃)

Embodiment 2

[0050] The components and their proportions in the liquid crystal mixture are shown in Table 5 below:

[0051] Composition and proportioning ratio of liquid crystal mixture in Table 5 embodiment two

[0052]

[0053]

[0054] The performance test parameters of the liquid crystal mixture of embodiment two are as shown in table 6:

[0055] Table 6 embodiment two performance test data

[0056] Performance parameters

Embodiment 3

[0058] The components and their proportions in the liquid crystal mixture are shown in Table 7 below:

[0059] Composition and proportioning ratio of liquid crystal mixture in Table 7 embodiment three

[0060]

[0061]

[0062] The performance test parameters of the liquid crystal mixture of embodiment three are as shown in table 8:

[0063] Table 8 embodiment three performance test data

[0064] Performance parameters

[0065] Clearing Point(°C)

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Abstract

The invention discloses a high negative dielectric anisotropy liquid crystal mixture with high birefringence and low viscosity. The liquid crystal mixture contains the following components by mass percent: 35-50% of I compound, 10-30% of II compound, 5-10% of III compound, 10-15% of IV compound, 1-3% of V compound, 10-20% of VI compound and 0.05-0.1% of VII compound, wherein the formulas are as shown in the specification. The high negative dielectric anisotropy liquid crystal mixture can be used as a material for liquid crystal devices such as a liquid crystal display and a functional liquid crystal film, so that the liquid crystal devices more easily achieve the vertical orientation effect, drive voltage can be effectively reduced, energy consumption is reduced, and meanwhile, the high negative dielectric anisotropy liquid crystal mixture has a wide working temperature range.

Description

technical field [0001] The invention relates to a liquid crystal mixture, in particular to a liquid crystal mixture with high birefringence and low viscosity and high negative dielectric anisotropy. Background technique [0002] Liquid crystal is a thermodynamically stable phase state between solid phase and liquid phase. According to the different arrangement of molecules, it can be roughly divided into smectic phase, nematic phase and cholesteric phase. Due to the obvious advantages of liquid crystal materials used in the display field, such as low driving voltage, low power consumption, high reliability, no flicker, color display and large amount of displayed information, etc., the liquid crystal industry has achieved rapid development in the past 30 years. [0003] Liquid crystal mixtures have better optical and electrical properties than single-component liquid crystal compounds, and the required properties can be obtained by adjusting component structures, ratios, etc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/46G02F1/1333
Inventor 杨槐于美娜张兰英王萌
Owner PEKING UNIV
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