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Liquid crystal composition and its liquid crystal display device

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of complex circuits, increased IC driving costs, and increased power consumption.

Active Publication Date: 2018-07-24
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the driving method will often lead to higher IC driving costs and more complex circuits; increasing the driving voltage will also increase power consumption

Method used

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  • Liquid crystal composition and its liquid crystal display device
  • Liquid crystal composition and its liquid crystal display device
  • Liquid crystal composition and its liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0104] The compound of general formula Ⅰ-2 is obtained by the method of suzuki coupling using commercially available raw materials, and the synthetic route is as follows:

[0105]

[0106] Among them, R 2 represents an alkyl group having 1 to 5 carbon atoms. Both Compound A and Compound B are commercially available.

[0107] Prepare the compound of following structural formula by above-mentioned method:

[0108] When R 2 =C 2 h 5 When, obtain the compound of following structural formula by above-mentioned method:

[0109]

[0110] When R 2 =C 3 h 7 When, obtain the compound of following structural formula by above-mentioned method:

[0111]

[0112] When R 2 =C 4 h 9 When, obtain the compound of following structural formula by above-mentioned method:

[0113]

[0114] When R 2 =C 5 h 11 When, obtain the compound of following structural formula by above-mentioned method:

[0115]

[0116] Table 2 Compound Liquid Crystal Performance Parameters

...

Embodiment 1

[0132] The liquid crystal composition of Example 1 was formulated according to the compounds and weight percentages listed in Table 6, 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:

[0133] Table 6 liquid crystal composition formula and test performance thereof

[0134]

Embodiment 2

[0136] The liquid crystal composition of Example 2 was formulated according to the compounds and weight percentages listed in Table 7, 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:

[0137] Table 7 liquid crystal composition formula and test performance thereof

[0138]

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PUM

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Abstract

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises: at least one compound of general formula I-1 and / or general formula I-2 and at least one compound of general formula I-3 as a first component; at least one compound of general formula I-3 as a second component; a compound of general formula II; and at least one compound of general formula III as a third component. The liquid crystal composition provided by the invention has properties such as appropriately large refractive index anisotropy, suitable dielectric anisotropy, relatively high nematic temperature upper limit, and relatively fast response speed. The liquid crystal composition can be suitable for liquid crystal display, so that the liquid crystal display has characteristics such as short response time.

Description

technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display device thereof, in particular to a liquid crystal composition having a suitably large optical anisotropy, a suitable dielectric anisotropy, a higher nematic phase temperature upper limit and a faster response speed A liquid crystal composition, and a liquid crystal display device comprising the liquid crystal composition. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecular compounds that have both fluidity of liquid and anisotropy of crystal at a certain temperature. Liquid crystal display elements work by utilizing the optical anisotropy and dielectric anisotropy of the liquid crystal material itself, and have 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 (twiste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 徐海彬韩文明刘琦丁文全马文阳施红萍马定福李鹏飞贺笛戴慧娟姚丽芳刘云云张鹤鸣
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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