A kind of liquid crystal composition with negative dielectric anisotropy and its application
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A technology of dielectric anisotropy and liquid crystal composition, applied in liquid crystal materials, nonlinear optics, instruments, etc., can solve the problems of large refraction, large liquid crystal composition, high critical voltage, etc., and achieve balanced performance, excellent performance, large Effect of absolute value of dielectric anisotropy
Active Publication Date: 2022-02-08
JIANGSU HECHENG DISPLAY TECH CO LTD
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Problems solved by technology
However, in the prior art, it is difficult to obtain a liquid crystal composition with large refraction, large negative dielectric value and rapid response
A liquid crystal composition with a large absolute value of dielectric anisotropy has a high threshold voltage, high power consumption, and a relatively slow response speed.
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Embodiment 1
[0135] The liquid crystal composition of Example 1 was prepared by each compound listed in Table 2 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:
[0136] Table 2 liquid crystal composition formula and test performance thereof
[0137]
Embodiment 2
[0139] The liquid crystal composition of Example 2 was prepared by each compound listed in Table 3 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:
[0140] Table 3 liquid crystal composition formula and test performance thereof
[0141]
Embodiment 3
[0143] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 4 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:
[0144] Table 4 liquid crystal composition formula and test performance thereof
[0145]
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Abstract
The invention discloses a liquid crystal composition with negative dielectric anisotropy, which comprises one or more compounds of general formula I and one or more compounds of general formula II. The invention also discloses a liquid crystal display device comprising the liquid crystal composition of the invention. The liquid crystal composition with negative dielectric anisotropy provided by the present invention can not only satisfy a suitable large refractive index, but also have the characteristics of large absolute value of dielectric anisotropy and low rotational viscosity, excellent performance, and can realize various Balanced performance, the liquid crystal composition of the present invention is suitable for VA or IPS mode liquid crystal display.
Description
technical field [0001] The invention belongs to the field of liquid crystal materials, and in particular relates to a liquid crystal composition with negative dielectric anisotropy and its application. Background technique [0002] Liquid crystal display elements can be used in various home appliances represented by clocks and electronic calculators, measuring equipment, automotive panels, word processors, computers, printers, televisions, and the like. According to the type of display mode, 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, electrically controlled birefringence), OCB (optically compensated bend, optically compensated bending), IPS (in-plane switching, coplanar transformation), VA (vertical alignment, vertical alignment) and other types. According to the driving method of the component, it is divided into PM (passive matrix, ...
Claims
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