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Liquid crystal composition with negative dielectric anisotropy and display device thereof

A liquid crystal composition, anisotropic technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as short life cycle

Active Publication Date: 2018-07-03
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Liquid crystal materials are an important part of liquid crystal displays, and currently global liquid crystal displays have a great market demand and are mostly used in electronic and electrical products, but their life cycle is short

Method used

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  • Liquid crystal composition with negative dielectric anisotropy and display device thereof
  • Liquid crystal composition with negative dielectric anisotropy and display device thereof
  • Liquid crystal composition with negative dielectric anisotropy and display device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] The liquid crystal composition of Example 1 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:

[0130] Table 3 liquid crystal composition formula and test performance thereof

[0131]

[0132] Comparing Example 1 and Comparative Example 1, it can be found that the negative liquid crystal composition of the present invention has suitably high dielectric anisotropy, suitably high optical anisotropy and suitably high clearing point, especially has relatively high Fast response speed and high transmittance.

Embodiment 2

[0139] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 5 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 5 liquid crystal composition formula and test performance thereof

[0141]

[0142] Comparing Example 2 and Comparative Example 2, it can be found that the negative liquid crystal composition of the present invention has suitably high dielectric anisotropy, suitably high optical anisotropy and suitably high clearing point, especially has relatively high Fast response speed and high transmittance.

Embodiment 3

[0149] The liquid crystal composition of Example 3 was formulated according to the compounds and weight percentages listed in Table 7, 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:

[0150] Table 7 liquid crystal composition formula and test performance thereof

[0151]

[0152] Comparing Example 3 and Comparative Example 3, it can be found that the negative liquid crystal composition of the present invention has suitably high dielectric anisotropy, suitably high optical anisotropy and suitably high clearing point, especially has relatively high Fast response speed and high transmittance.

[0153] It can be seen from the above comparative examples and examples that the negative liquid crystal composition of the present invention has a suitably large absolute value of dielectric anisotropy, suitably high optical anisotropy, suitably high clearing point, and higher transmitta...

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Abstract

The invention discloses a liquid crystal composition with negative dielectric anisotropy, which is high in transmittance and high in response speed. The liquid crystal composition contains one or morecompounds as shown in general formula I-1 and / or I-2, which account for 15-65% of the total weight of a negative liquid crystal composition; one or more compounds as shown in a general formula II, which account for at least 6% of the total weight of the negative liquid crystal composition; one or more compounds as shown in general formula III, which account for at least 7% of the total weight ofthe negative liquid crystal composition; and one or more compounds as shown in general formula IV, which account for 1-30% of the total weight of the negative liquid crystal composition. The inventionalso discloses a liquid crystal display device comprising the liquid crystal composition. The formulae are as shown in the specification.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a liquid crystal composition with appropriate dielectric anisotropy, appropriate clearing point, high optical anisotropy, high transmittance, and fast response speed. A liquid crystal composition, and a liquid crystal display device comprising the liquid crystal composition. Background technique [0002] Liquid crystal display elements have developed from clocks and calculators to various electrical appliances for household use, measurement equipment, automotive panels, word processors, electronic notebooks, printers, computers, televisions, etc. As a representative liquid crystal display method, it can include TN (twisted nematic) type, STN type (super twisted nematic) type, DS (dynamic light scattering) type, GH (guest-host) type, IPS (in-plane switching) type, OCB (Optically Compensated Birefringence) type, ECB (Voltage Controlled Birefringence) type, VA (Vertical Alignment) ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/12C09K19/30
CPCC09K19/12C09K19/3003C09K19/3066C09K19/44C09K2019/122C09K2019/123C09K2019/3004C09K2019/301C09K2019/3016C09K2019/3025
Inventor 马文阳徐海彬韩文明陈昭远
Owner JIANGSU HECHENG DISPLAY TECHCO
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