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A kind of compound, liquid crystal composition and display device

A technology of liquid crystal composition and compound, which is applied in the field of compound, liquid crystal composition and display device, can solve problems such as fast response time, achieve wide liquid crystal state temperature range, good compatibility, and improve the effect of mutual solubility

Active Publication Date: 2022-01-18
FUYANG XINYIHUA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, liquid crystals with large dielectric anisotropy have greater polarity and greater viscosity, so the requirements for low threshold of liquid crystals and fast response time are contradictory

Method used

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  • A kind of compound, liquid crystal composition and display device
  • A kind of compound, liquid crystal composition and display device
  • A kind of compound, liquid crystal composition and display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0154] The preparation method of the liquid crystal material is well known to those skilled in the art. For example, it can be: (1) heating, mixing and stirring various monomer liquid crystal compounds, and then filtering to obtain the liquid crystal material; (2) mixing various monomer liquid crystal compounds with a solvent Dissolving, then mixing evenly, and then extracting the solvent under vacuum conditions to obtain a liquid crystal material; (3) using oscillating mixing or ultrasonic mixing to mix various monomer liquid crystal compounds evenly, and then filtering to obtain a liquid crystal material. The ratio of various monomer liquid crystal materials is adjusted according to the specific display performance requirements. Mixed liquid crystal materials can be prepared by the above methods.

[0155] According to yet another aspect of the present invention, there is provided a display device comprising the above-mentioned liquid crystal composition.

[0156] The displa...

Embodiment 1

[0170] Monomer and components thereof in embodiment 1 and comparative example 1 are as shown in table 1:

[0171] Table 1

[0172]

[0173]

[0174] A series of performance tests were carried out on the liquid crystal compositions of Example 1 and Comparative Example 1, and the test results are shown in Table 1-1:

[0175] Table 1-1

[0176] Performance parameters Example 1 Comparative example 1 Cp(°C) 75.2 73.1 Δn 0.119 0.115 Δε 2.5 2.0 gamma 1 61 67

[0177] According to the test results of Table 1-1, it can be seen that the compound shown in formula (I) of the present invention was added in Example 1, compared with Comparative Example 1 in which the compound shown in formula (I) of the present invention was not added, the liquid crystal combination The material has a higher clearing point, a higher optical anisotropy constant and an electrical anisotropy constant, and a lower rotational viscosity, and can be used in liquid ...

Embodiment 2

[0178] Monomer and components thereof in embodiment 2 and comparative example 2 are as shown in table 2:

[0179] Table 2

[0180]

[0181]

[0182] A series of performance tests were carried out on the liquid crystal compositions of Example 2 and Comparative Example 2, and the test results are shown in Table 2-1:

[0183] table 2-1

[0184] Performance parameters Example 2 Comparative example 2 Cp(°C) 81.2 75.4 Δn 0.098 0.090 Δε 2.5 2.0 gamma 1 58 72

[0185] According to the test results of Table 2-1, it can be seen that the compound shown in formula (I) of the present invention was added in Example 2, compared with Comparative Example 2 in which the compound shown in formula (I) of the present invention was not added, the liquid crystal combination The material has a higher clearing point, a higher optical anisotropy constant and an electrical anisotropy constant, and a lower rotational viscosity, and can be used in liqui...

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Abstract

The invention relates to the field of liquid crystal display, in particular to a compound, a liquid crystal composition and a display device. Compound according to the present invention has the structure shown in formula (I):

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a compound, a liquid crystal composition and a display device. Background technique [0002] According to different display methods, liquid crystal display elements are divided into the following modes: twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane mode (IPS), and vertical alignment (VA) mode. Regardless of the display mode, the liquid crystal composition needs to have the following characteristics: stable chemical and physical properties, low viscosity, suitable Δε and refraction rate Δn, and good compatibility with other liquid crystal compounds. [0003] For the liquid crystal material used in TFT-LCD, in addition to requiring low threshold value, fast response and stability of liquid crystal, it also requires high voltage holding rate. The low-threshold liquid crystal material should have a large dielectric anisotropy, and the fast response perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C43/225C07C41/18C07D309/06C07D319/06C09K19/44
CPCC09K19/44C07C43/225C07D309/06C07D319/06
Inventor 贾刚刚王占奇张卓丁兴立高纪纲岳涛
Owner FUYANG XINYIHUA MATERIAL TECH
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