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Liquid crystal composition and its application

A technology of liquid crystal composition and compound, applied in liquid crystal materials, optics, instruments, etc., can solve the problems of insufficient optical anisotropy, insufficient dielectric anisotropy, and insufficient response speed, and achieve large optical anisotropy. Anisotropy, large dielectric anisotropy, fast response effect

Active Publication Date: 2017-03-01
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing liquid crystal composition, better characteristics can be obtained, but the optical anisotropy and dielectric anisotropy of this type of compound are not large enough, and it is not very helpful to mix into a composition with large Δn and Δε, so that it is not It is beneficial to be used in products with small box thickness, which directly leads to insufficient response speed, such as the liquid crystal composition disclosed in CN101796162A and CN1475547A, which have the above-mentioned disadvantages to varying degrees

Method used

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  • Liquid crystal composition and its application
  • Liquid crystal composition and its application
  • Liquid crystal composition and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Table 3 lists the components of the liquid crystal composition of Example 1 and the weight percentage of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0083] Table 3 The formulation and test performance of liquid crystal composition

[0084] Component code weight percent Performance parameter test results 3CWO2 16 Δn[589nm,20℃]=0.0825 CC1OWO2 14 Cp[°C]=73.5 3CCWO2 9 Δε[1KHZ,20℃]=-3.92 5CCWO2 10 γ1[mPa.s,20℃]=123 2CCW1 9 3CCW1 8 4CC3 8 5CC3 9 5CP3 9 3CPO1 8 total 100

Embodiment 2

[0090] Table 5 lists the components of the liquid crystal composition of Example 2 and the weight percentages of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0091] Table 5 The formulation and test performance of the liquid crystal composition

[0092] Component code weight percent Performance parameter test results CC1OWO2 9.6 Δn[589nm,20℃]=0.0760 5CWO4 9.6 Cp[°C]=68 2CCWO2 9.6 Δε[1KHZ,20℃]=-3.05 3CCWO2 9.6 γ1[mPa.s,20℃]=105 5CCWO2 6.4 2CCW1 5 3CCW1 5 5CCV 12.4 5CP3 12.8 1CCV3 20 total 100

Embodiment 3

[0098] Table 7 lists the components of the liquid crystal composition of Example 3 and the weight percentages of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0099] Table 7 The formulation and test performance of liquid crystal composition

[0100] Component code weight percent Performance parameter test results 3CWO2 18 Δn[589nm,20℃]=0.0830 CC1OWO2 10 Cp[°C]=82 3CCWO2 9 Δε[1KHZ,20℃]=-2.35 3CCWO3 8 γ1[mPa.s,20℃]=110 4CCWO2 6 3CPWO2 8 3CCV1 10 4CC3 10 5CC3 6 3CCO1 5 3CCV2 10 total 100

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Abstract

The invention provides a liquid crystal composition. The composition comprises at least a compound represented by the formula I, at least a compound represented by the formula II, and at least a compound represented by the formula III. The provided liquid crystal composition has the characteristics of low viscosity, large optical anisotropy, and large dielectric anisotropy. A liquid displaying element containing the provided crystal liquid composition has the advantages of fast responding speed, high clearing point, low driving voltage, and good mutual solubility. The invention also provides a liquid crystal display device containing the provided liquid crystal composition. The liquid crystal display device can be used under an IPS mode, a VA mode, a PS-VA mode, a PALC mode, an FFS mode, an IPS mode, or an ECB mode.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a liquid crystal composition with good optical anisotropy, large dielectric anisotropy, low viscosity and high resistivity and its application in liquid crystal displays . Background technique [0002] For liquid crystal display elements, according to the display mode of liquid crystal, it is divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), ECB (electrically controlled birefringence) , electronically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching, coplanar transformation), VA (vertical alignment, vertical alignment) and other types. Liquid crystal display elements are classified into reflective type using natural light, transmissive type using backlight, and transflective type using both natural light and backlight according to the type of light source. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/42C09K19/44G02F1/1333
Inventor 李鹏飞韩文明马文阳陈晶晶毛良良
Owner JIANGSU HECHENG DISPLAY TECH CO LTD