Liquid crystal composition and application thereof

A liquid crystal composition and compound technology, applied in liquid crystal materials, optics, instruments, etc., can solve the problems of insufficient optical anisotropy, insufficient dielectric anisotropy, and insufficient response speed, etc., and achieve large optical anisotropy Effects of anisotropy, large dielectric anisotropy, and fast response

Active Publication Date: 2015-03-18
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing liquid crystal composition, better characteristics can be obtained, but the optical anisotropy and dielectric anisotropy of this type of compound are not large enough, and it is not very helpful to mix into a composition with large Δn and Δε, so that it is not It is beneficial to be used in products with small box thickness, which directly leads to insufficient response speed, such as the liquid crystal composition disclosed in CN101796162A and CN1475547A, which have the above-mentioned disadvantages to varying degrees

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

[0067] Table 3 lists the components of the liquid crystal composition of Example 1 and the weight percentage of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0068] Table 3 The formulation and test performance of liquid crystal composition

[0069] Component code

[0070] 3C1OPWO2

Embodiment 2

[0076] Table 5 lists the components of the liquid crystal composition of Example 2 and the weight percentages of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0077] Table 5 The formulation and test performance of the liquid crystal composition

[0078] Component code

[0079] 4CC3

Embodiment 3

[0085] Table 7 lists the components of the liquid crystal composition of Example 3 and the weight percentages of each component. The liquid crystal composition is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0086] Table 7 The formulation and test performance of liquid crystal composition

[0087] Component code

[0088] 2C1OPWWO2

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Abstract

The invention provides a liquid crystal composition comprising: at least one compound, as a first component, selected from the general formula I; at least one compound, as a second component, selected from the general formula II; at least one compound, as a third component, selected from the general formula III-1 and / or the general formula III-2; and at least one compound, as a fourth component, selected from the general formula IV. The liquid crystal composition is low in viscosity, is high in clearing point and is large in optical anisotropy and dielectric anisotropy. The invention also provides a liquid crystal display apparatus comprising the liquid crystal composition, wherein the liquid crystal display apparatus can be used in an IPS mode, a VA mode, a PS-VA mode, a PALC mode, an FFS mode or an ECB mode.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a liquid crystal composition with proper optical anisotropy and dielectric anisotropy, smaller viscosity and faster response speed and its application in liquid crystal displays. Background technique [0002] For liquid crystal display elements, according to the display mode of liquid crystal, it is divided into PC (phase change, phase change), TN (twistnematic, twisted nematic), STN (supertwisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electrically controlled birefringence) , OCB (optically compensated bend), IPS (in-plane switching, coplanar transformation), VA (vertical alignment, vertical alignment) and other types. Liquid crystal display elements are classified into reflective type using natural light, transmissive type using backlight, and transflective type using both natural light and backlight according to the type of light source. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 李鹏飞韩文明
Owner JIANGSU HECHENG DISPLAY TECHCO
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