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Liquid crystal composition and application thereof

A technology for liquid crystal compositions and compounds, which can be applied to liquid crystal materials, chemical instruments and methods, etc., and can solve the problems of solid precipitation and poor compatibility.

Active Publication Date: 2021-05-21
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hindered amine compounds, as UV absorbers for liquid crystals, have good physical and chemical stability and excellent UV resistance. However, when the known hindered amine compounds are miscible with liquid crystal materials, the compatibility will deteriorate. Problems, especially when applied to lower temperature environments, solid precipitation often occurs

Method used

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  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1

[0104] By adding different contents of GUEST-1 (belonging to general formula I-2) in the following table 4-1 to HOST-1: Constituting Comparative Example 1 and Examples 1-6 of the present invention, the performance test results are shown in Table 4-2.

[0105] Table 4-1 Formulas of liquid crystal compositions of Examples 1-6 and Comparative Example 1.

[0106]

[0107] Table 4-2 Performance test data of the liquid crystal composition of Examples 1-6 and Comparative Example 1

[0108]

[0109] It can be seen from Table 4-2 that the low-temperature storage time of the liquid crystal composition containing the compound of general formula I of the present invention has not been shortened, and even has been extended, VHR- is initially higher, and the conductance is lower. It can be seen from this that the present invention The liquid crystal composition has better low temperature stability and reliability.

[0110] figure 1 It is the RDC diagram of the liquid crystal compo...

Embodiment 7-10 and comparative example 2

[0112] By adding different contents of GUEST-2 (belonging to general formula I-9) in the following table 5-1 to HOST-2: Constitute Comparative Example 2 and Examples 7-10 of the present invention, and the performance test results are shown in Table 5-2.

[0113] Table 5-1 Embodiment 7-10, the formula of comparative example 2 liquid crystal compositions

[0114] Example 7 Example 8 Example 9 Example 10 Comparative example 2 GUEST-2 content (ppm) 100 200 500 1000 0

[0115] Table 5-2 Performance test data of the liquid crystal composition of Examples 7-10 and Comparative Example 2

[0116]

[0117]

[0118] It can be seen from Table 5-2 that the low-temperature storage time of the liquid crystal composition containing the compound of general formula I of the present invention has not been shortened, and even has been extended, VHR- is initially higher, and the conductance is lower. It can be seen from this that the present invention The...

Embodiment 11-14 and comparative example 3

[0121] By adding GUEST-3 (belonging to general formula I-2) with different contents in the following table 6-1 to HOST-3: Constitute Comparative Example 3 and Examples 11-14 of the present invention, and the performance test results are shown in Table 6-2.

[0122] Table 6-1 Embodiment 11-14, the formula of comparative example 3 liquid crystal composition

[0123] Example 11 Example 12 Example 13 Example 14 Comparative example 3 GUEST-3 content (ppm) 100 300 600 1000 0

[0124] Table 6-2 Performance test data of the liquid crystal composition of Examples 11-14 and Comparative Example 3

[0125]

[0126]

[0127] It can be seen from Table 6-2 that the low-temperature storage time of the liquid crystal composition containing the compound of general formula I of the present invention has not been shortened, and even has been extended, VHR- is initially higher, and the conductance is lower. It can be seen from this that the present inventi...

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Abstract

The invention relates to a liquid crystal composition and application thereof.The liquid crystal composition comprises at least one compound shown in the general formula I and at least one compound shown in the general formula II, the compound shown in the general formula I serves as an additive to be added into the liquid crystal composition, and the additive is matched with a negative liquid crystal monomer shown in the general formula II; the liquid crystal composition can maintain low-temperature intersolubility (even better) on the premise that the liquid crystal composition has proper optical anisotropy and dielectric anisotropy, high clearing point and low rotational viscosity, and on the basis, the liquid crystal composition also has high voltage holding ratio, low liquid crystal conductivity, high ion dissipation speed and remarkably improved liquid crystal reliability; ghost shadow improvement is obvious, and the liquid crystal material is a liquid crystal material with high reliability and good stability, and is suitable for display modes such as IPS, NFFS, VA, PSVA and the like.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and relates to a liquid crystal composition and its application. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. People have higher and higher requirements for liquid crystal flat panel displays. Therefore, higher requirements are placed on the quality characteristics of liquid crystal materials used in liquid crystal flat panel displays. [0003] Liquid crystals are mainly used as dielectrics in liquid crystal display devices because the optical properties of such substances can be changed by applying voltage. Therefore, liquid crystal material...

Claims

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Application Information

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IPC IPC(8): C09K19/44C09K19/46
CPCC09K19/44C09K19/46
Inventor 周振婷姚莉芳
Owner JIANGSU HECHENG DISPLAY TECHCO
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