Liquid crystal composition and liquid crystal display device

A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, chemical instruments and methods, and can solve the problems of poor ratio and inability to meet the needs of display effects, etc.

Active Publication Date: 2019-04-05
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Patent CN104293357B discloses mixing negative liquid crystals with positive liquid crystals to achieve the technical effect of improving transmittance, but the technical effect achieved still cannot meet the needs of the prior art. The transmittance of liquid crystal display devices has been greatly improved, but the contrast ratio is still relatively poor, which cannot meet the needs of good display effects

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0206] 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:

[0207] Table 4 Liquid crystal composition formula and its test performance

[0208]

[0209]

Embodiment 2

[0211] 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:

[0212] Table 5 Liquid crystal composition formula and its test performance

[0213]

Embodiment 3

[0215] The liquid crystal composition of Example 3 was prepared by each compound listed in Table 6 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:

[0216] Table 6 Liquid crystal composition formula and its test performance

[0217]

[0218]

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PUM

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Abstract

The invention provides a liquid crystal composition. The liquid crystal composition contains at least one compound of a formula I, at least one compound of a formula II-1 and\or II-2, and at least onecompound of a formula III. The liquid crystal composition has high transmittance, high optical anisotropy, a high clearing point, appropriate dielectric anisotropy, and relatively large elastic constants K11 and K33. The invention also provides a liquid crystal display device containing the liquid crystal composition; and the liquid crystal display device containing the liquid crystal compositioncan have the advantages of high transmittance, high contrast, and the like, thereby having a good display effect.

Description

technical field [0001] The invention relates to the field of liquid crystal display materials, in particular to a liquid crystal composition and a liquid crystal display device thereof. Background technique [0002] In liquid crystal display elements, the classification based on the operation mode of liquid crystal molecules is: phase change (phase change, PC), twisted nematic (twisted nematic, TN), super twisted nematic (super twisted nematic, STN), electrically controlled birefringence (electrically controlled birefringence, ECB), optically compensated bend (optically compensated bend, OCB), in-plane switching (IPS), vertical alignment (vertical alignment, VA), fringe field switching (fringe field switching, FFS), electric field Field-induced photo-reactive alignment (FPA) and other modes. The classification of component-based driving methods is: passive matrix (passive matrix, PM) and active matrix (active matrix, AM). PM is classified into static type (static), multipl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44
CPCC09K19/44
Inventor 王莉徐海彬李鹏飞贺笛金睿
Owner JIANGSU HECHENG DISPLAY TECHCO
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