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

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems that liquid crystal displays cannot use the working temperature range under high temperature conditions, and the clearing point of liquid crystal compositions is not high, so as to improve the performance of work. Temperature range, improvement of clearing point, effect of increasing clearing point

Active Publication Date: 2018-03-23
FUYANG XINYIHUA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a compound which solves the problem that the clearing point of the liquid crystal composition is not high in the prior art; the invention also provides a liquid crystal composition and a liquid crystal display which solves the problem that the liquid crystal display cannot be used in a high temperature state and the working temperature range narrow question

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] Monomer and components thereof in embodiment 1 and comparative example 1 are as shown in table 1:

[0154] Table 1

[0155]

[0156]

[0157] 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:

[0158] Table 1-1

[0159] performance parameter

[0160] According to the test results of Table 1-1, it can be seen that the compound of the present invention was added in Example 1, and compared with the comparative example 1 without adding the compound of the present invention, the clearing point (C) of the liquid crystal composition was improved. p ), the melting point of the liquid crystal composition is generally below -10°C, and the melting points of the liquid crystal composition in Comparative Example 1 and Example 1 are all low enough, completely lower than the temperature range of normal use, so the melting point has little influence on t...

Embodiment 2

[0162] Monomer and components thereof in embodiment 2 and comparative example 2 are as shown in table 2:

[0163] Table 2

[0164]

[0165] 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 2-2:

[0166] Table 2-2

[0167] performance parameter

[0168] Can find out according to the test result of table 2-2: added the compound of the present invention in the embodiment 2, compared with the comparative example 2 that did not add the compound of the present invention, improved the clearing point (C p ), the melting point of the liquid crystal composition is generally below -10°C, and the melting points of the liquid crystal composition in Comparative Example 2 and Example 2 are all low enough, completely lower than the temperature range of normal use, so the melting point has little influence on the use temperature, so it is improved The clearing point i...

Embodiment 3

[0170] Monomer and components thereof in embodiment 3 and comparative example 3 are as shown in table 3:

[0171] table 3

[0172]

[0173]

[0174] A series of performance tests were carried out on the liquid crystal compositions of Example 3 and Comparative Example 3, and the test results are shown in Table 3-3:

[0175] Table 3-3

[0176] performance parameter

[0177] Can find out according to the test result of table 3-3: added the compound of the present invention in the embodiment 3, compared with the comparative example 3 that did not add the compound of the present invention, improved the clearing point (C p ), the melting point of the liquid crystal composition is generally below -10°C, and the melting points of the liquid crystal composition in Comparative Example 3 and Example 3 are all low enough, completely lower than the temperature range of normal use, so the melting point has little influence on the use temperature, so increase The clearing p...

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Abstract

The invention discloses a compound shown in the formula I. R1 and R2 are respectively selected from hydrogen atoms or alkyl groups or alkoxy groups with 1-15 carbon atoms, A1, A2, A3 and A4 are respectively selected from the following groups (please see the groups in the specification), L1, L2 and L3 are respectively selected from -CF2O and alkyl groups or alkoxy groups with 1-12 carbon atoms, and a, b, c, d, e, f and g are respectively selected from 0 or 1. A liquid crystal composition comprises 1-5 kinds of compounds. A liquid crystal displayer contains the liquid crystal composition.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a compound, a liquid crystal composition and a liquid crystal display. Background technique [0002] According to different display methods, liquid crystal displays are divided into dynamic flash type, twisted type, super twisted type and plane conversion type. Although different types of liquid crystal displays require liquid crystal compositions to have different properties, they are also required to have the following common features: proper optical anisotropy, proper rotational viscosity and fast response speed. [0003] The liquid crystal composition is prepared by mixing various liquid crystal compounds, so the properties of the liquid crystal compound monomers are particularly important. Due to the low clearing point of the existing liquid crystal composition, it cannot meet the requirements of liquid crystal displays used at high temperatures, and has the problem o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C25/22C07C17/263C07C43/225C07C41/01C07C41/16C09K19/44C09K19/46G02F1/1333
Inventor 郭金涛洪豪志李志强王占奇郭林林姜坤韩耀华
Owner FUYANG XINYIHUA MATERIAL TECH
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