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Liquid crystal composition and liquid crystal display device containing same

A technology of liquid crystal composition and compound, applied in the direction of liquid crystal materials, chemical instruments and methods, etc., can solve problems such as difficult to obtain, slow response speed, good low temperature stability, etc.

Pending Publication Date: 2018-01-19
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The prior art discloses a liquid crystal display device comprising a liquid crystal composition with low power consumption and fast response, such as patent document CN102858918A. However, it is difficult to obtain a liquid crystal display device with large optical anisotropy and large dielectric anisotropy at the same time. Absolute value, good low temperature stability and quick response liquid crystal composition
When a liquid crystal composition with a large absolute value of dielectric anisotropy is applied to a liquid crystal display device, the threshold voltage is high, the power consumption is also high, and the response speed is relatively slow

Method used

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  • Liquid crystal composition and liquid crystal display device containing same
  • Liquid crystal composition and liquid crystal display device containing same
  • Liquid crystal composition and liquid crystal display device containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] The liquid crystal composition of Example 1 was formulated according to the compounds and weight percentages listed in Table 4, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0186] Table 4 Liquid crystal composition formula and its test performance

[0187]

Embodiment 2

[0189] The liquid crystal composition of Example 2 was formulated according to the compounds and weight percentages listed in Table 5, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0190] Table 5 Liquid crystal composition formula and its test performance

[0191]

[0192]

Embodiment 3

[0194] The liquid crystal composition of Example 3 was formulated according to the compounds and weight percentages listed in Table 6, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0195] Table 6 Liquid crystal composition formula and its test performance

[0196]

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PUM

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Abstract

The invention provides liquid crystal composition. The liquid crystal composition contains at least one compound in general formula I shown in the description, at least one compound in general formulaII-1 shown in the description and / or II-2 shown in the description and at least one compound in general formula III shown in the description. The liquid crystal composition has higher clearing point,lower viscosity, appropriately high dielectric anisotropy absolute value, appropriately high optical anisotropy, wide nematic phase temperature range and good low-temperature stability. The inventionfurther provides a liquid crystal display device containing the liquid crystal composition.

Description

technical field [0001] The invention relates to the field of liquid crystal display materials, in particular to a liquid crystal composition with a suitably high absolute value of dielectric anisotropy, high optical anisotropy, high clearing point, good low-temperature mutual solubility, and fast Liquid crystal display device with fast response speed. Background technique [0002] The classification of liquid crystal display elements based on the operation mode of liquid crystal molecules is: phase change (phase change, PC), twisted nematic (twisted nematic, TN), super twisted nematic (super twisted nematic, STN), electrically controlled birefringence (electrically controlled controlled birefringence (ECB), optically compensated bend (OCB), in-plane switching (IPS), vertical alignment (vertical alignment, VA), fringe field switching (fringe field switching, FFS), electric field sensing light Reactive alignment (field-induced photo-reactive alignment, FPA) and other modes. ...

Claims

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Application Information

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IPC IPC(8): C09K19/44
Inventor 徐海彬周振婷金睿
Owner JIANGSU HECHENG DISPLAY TECHCO
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