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Liquid crystal composition and liquid crystal display device thereof

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

Active Publication Date: 2016-05-18
JIANGSU HECHENG DISPLAY TECHCO
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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 liquid crystal display device thereof
  • Liquid crystal composition and liquid crystal display device thereof
  • Liquid crystal composition and liquid crystal display device thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0104] The compound of general formula 1-2 is obtained by suzuki coupling method using commercially available raw materials. The synthetic route is as follows:

[0105]

[0106] Where R 2 Represents an alkyl group having 1 to 5 carbon atoms. Both Compound A and Compound B can be obtained commercially.

[0107] The compound of the following structural formula is prepared by the above method:

[0108] When R 2 =C 2 H 5 When using the above method, the compound of the following structural formula is obtained:

[0109]

[0110] When R 2 =C 3 H 7 When using the above method, the compound of the following structural formula is obtained:

[0111]

[0112] When R 2 =C 4 H 9 When using the above method, the compound of the following structural formula is obtained:

[0113]

[0114] When R 2 =C 5 H 11 When using the above method, the compound of the following structural formula is obtained:

[0115]

[0116] Table 2 Compound liquid crystal performance parameters

[0117] Compound

[0118] The MS...

Embodiment 1

[0132] The liquid crystal composition of Example 1 was prepared according to the compounds and weight percentages listed in Table 6, which was filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:

[0133] Table 6 Liquid crystal composition formula and its test performance

[0134]

Embodiment 2

[0136] The liquid crystal composition of Example 2 was prepared according to the compounds and weight percentages listed in Table 7, which was filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:

[0137] Table 7 Liquid crystal composition formula and its test performance

[0138]

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Abstract

The invention discloses a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least a compound as a first component in a general formula I-1 and / or a formula I-2 as well as at least a compound in a general formula I-3; a compound as a second component in a general formula II; and at least a compound as a third component shown in a general formula III. The liquid crystal composition has characteristics of appropriate large refractive index anisotropy, appropriate dielectric anisotropy, high nematic phase temperature upper limit, and fast response speed. The liquid crystal composition can be used in the liquid crystal display device, and the liquid crystal display device has characteristic of short response time.

Description

Technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display device thereof, and in particular to a kind of material with appropriately large optical anisotropy, appropriate dielectric anisotropy, higher upper limit of nematic phase temperature and faster response speed Liquid crystal composition, and liquid crystal display device containing the liquid crystal composition. Background technique [0002] Liquid crystal material is a mixture of organic rod-shaped small molecule compounds that have both liquid fluidity and crystal anisotropy at a certain temperature. The liquid crystal display element uses the optical anisotropy and dielectric anisotropy of the liquid crystal material itself to work, and has been widely used at present. Using the different characteristics and working methods of liquid crystal materials, the device can be designed into a variety of different working modes. Among them, the TN mode (twisted nematic m...

Claims

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Application Information

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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 TECHCO
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