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Liquid crystal composition and display device

A technology of liquid crystal composition and compound, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., which can solve the problems of low transmittance and slow response speed, etc., and achieve low rotational viscosity, accelerated response speed, and low driving voltage Effect

Active Publication Date: 2021-06-04
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the figure that the transmittance of positive IPS liquid crystals is significantly lower than that of negative IPS liquid crystals due to the inversion of liquid crystal molecules in the vertical direction.
[0007] CN101270287A discloses a technical solution for mixing positive and negative liquid crystals, but it only mentions adding positive components to negative liquid crystals, and the overall liquid crystal is still negative
Although in the prior art there has been a method of increasing the transmittance by adding a negative liquid crystal monomer to the positive liquid crystal composition, but in this way, the doping of the negative liquid crystal monomer will cause the response speed to slow down

Method used

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  • Liquid crystal composition and display device
  • Liquid crystal composition and display device
  • Liquid crystal composition and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] The liquid crystal composition of Example 1 was formulated according to the compounds and weight percentages listed in Table 4, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0140] Table 4 liquid crystal composition formula and test performance thereof

[0141]

Embodiment 2

[0143] The liquid crystal composition of Example 2 was prepared by each compound listed in Table 5 and the weight percentage, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0144] Table 5 liquid crystal composition formula and test performance thereof

[0145]

Embodiment 3

[0155] The liquid crystal composition of Example 3 was prepared according to the compounds and weight percentages listed in Table 8, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the table below:

[0156] Table 8 liquid crystal composition formula and test performance thereof

[0157]

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PUM

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Abstract

The invention provides a liquid crystal composition and its application. Based on the total weight of the liquid crystal composition, the liquid crystal composition of the present invention comprises: 3-10% of one or more compounds of general formula I, 30-60% of one or more compounds of general formula II, 15-30% of one or more compounds of general formula III, 0-15% of one or more compounds of general formula IV, 5-30% of one or more compounds of general formula V , and 0-30% of one or more compounds of general formula VI. The liquid crystal composition of the present invention has proper optical anisotropy, proper dielectric anisotropy, higher clearing point, lower driving voltage and fast response characteristics, is suitable for liquid crystal displays, and satisfies high wear resistance of liquid crystal displays. Transparency and fast response requirements.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a liquid crystal composition with fast response and large vertical dielectric, and a liquid crystal display device comprising the liquid crystal composition, especially an active matrix addressing display and in-plane switching (IPS ) type display. Background technique [0002] The liquid crystal display element works by utilizing the optical anisotropy and dielectric anisotropy possessed by the liquid crystal material itself, and has been widely used at present. Utilizing the different characteristics and working modes of liquid crystal materials, the device can be designed into various working modes. Among them, the TN mode (that is, the twisted nematic mode—the liquid crystal compound has a nematic structure twisted about 90 degrees) is commonly used in conventional displays. ), STN mode (i.e. super twisted nematic mode), SBE mode (i.e. super twisted birefringence mode), ECB mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/46C09K19/44G02F1/1343
Inventor 丁文全贺笛张鹤鸣刘云云王莉韩文明徐海彬
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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