Liquid crystal composition with positive dielectric anisotropy and liquid crystal display device thereof

A liquid crystal composition and anisotropic technology, applied in liquid crystal materials, instruments, nonlinear optics, etc., to achieve the effects of lowering threshold voltage, improving response speed, and good low-temperature stability

Active Publication Date: 2021-04-30
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the preparation of liquid crystal materials with suitable properties in all aspects often requires creative labor.

Method used

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  • Liquid crystal composition with positive dielectric anisotropy and liquid crystal display device thereof
  • Liquid crystal composition with positive dielectric anisotropy and liquid crystal display device thereof
  • Liquid crystal composition with positive dielectric anisotropy and liquid crystal display device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] The compounds listed in Table 3 and their weight percentages were formulated into the liquid crystal composition of Example 1, and filled between the two substrates of the liquid crystal display for performance testing.

[0163] Formulation and performance parameter test result of table 3 liquid crystal composition

[0164]

[0165]

Embodiment 2

[0167] The compounds listed in Table 4 and their weight percentages were formulated into the liquid crystal composition of Example 2, and filled between the two substrates of the liquid crystal display for performance testing.

[0168] Formulation and performance parameter test results of the liquid crystal composition of table 4

[0169]

Embodiment 3

[0171] The compounds listed in Table 5 and their weight percentages were formulated into the liquid crystal composition of Example 3, and filled between the two substrates of the liquid crystal display for performance testing.

[0172] Formulation and performance parameter test result of table 5 liquid crystal composition

[0173]

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PUM

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Abstract

The invention discloses a liquid crystal composition with positive dielectric anisotropy. The liquid crystal composition comprises at least one compound shown as a general formula I. The invention also provides a liquid crystal display device containing the liquid crystal composition. The liquid crystal composition provided by the invention also has a relatively large dielectric anisotropy absolute value, relatively low viscosity, a relatively large Kave value, relatively good low-temperature stability and relatively high transmittance on the premise of maintaining a proper high clearing point and proper large optical anisotropy; therefore, the liquid crystal display device containing the liquid crystal composition is low in threshold voltage, high in response speed, high in contrast ratio and wide in working temperature range. The liquid crystal composition provided by the invention can enable a liquid crystal display device containing the liquid crystal composition to obtain a good display effect.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition with positive dielectric anisotropy and a liquid crystal display device thereof. 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, liquid crystal display elements can be 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 (optical compensated bend), IPS (in-plane switching, in-plane transition), VA (vertical alignment, vertical alignment) and other types. According to the driving method of the element, the liquid crystal display elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333
Inventor 王立威马文阳
Owner JIANGSU HECHENG DISPLAY TECHCO
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