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Liquid crystal composition and application thereof

A technology for liquid crystal compositions and compounds, which can be used in liquid crystal materials, optics, instruments, etc., and can solve problems such as performance degradation, low rotational viscosity, and low optical birefringence value.

Active Publication Date: 2017-04-26
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the complexity of liquid crystal mixed crystal modulation: from the perspective of liquid crystal composition material modulation, all aspects of material performance (low optical birefringence value, high dielectric anisotropy value, high resistivity, low Rotational viscosity, low melting point, good thermal stability and UV stability, etc.) are mutually restrained, improving the performance of some aspects is often accompanied by the reduction of performance on the other hand, and preparing a liquid crystal composition with suitable performance in all aspects often very difficult

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

[0188] 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:

[0189] Table 4 Liquid crystal composition formula and its test performance

[0190]

[0191]

Embodiment 2

[0193] 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:

[0194] Table 5 Liquid crystal composition formula and its test performance

[0195]

Embodiment 3

[0197] 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:

[0198] Table 6 Liquid crystal composition formula and its test performance

[0199]

[0200]

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PUM

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Abstract

The invention provides liquid crystal composition with low optical birefringence, high dielectric anisotropy, low rotational viscosity and wide nematic phase temperature range. The liquid crystal composition comprises one or more of the compounds represented by the general formulas I, II-1 and / or II-2, III and IV in the specification. The invention also provides a liquid crystal display device comprising the composition.

Description

technical field [0001] The invention relates to a liquid crystal composition applied to a liquid crystal display element, in particular to a liquid crystal composition applied to an active matrix driven liquid crystal display element. Background technique [0002] Liquid crystal 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 (that is, the twisted nematic mode - the liquid crystal mixture has a nematic type twisted about 90 degrees) is commonly used in conventional displays. structure), STN mode (i.e. super twisted nematic mode), SBE mode (i.e. super twisted birefringence mode), ECB mode (i.e. electrically controlled birefringence mode), VA mode (i.e. vertical alignment mode), IPS mode (i.e. surface Inner co...

Claims

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Application Information

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IPC IPC(8): C09K19/44C09K19/42G02F1/13
Inventor 丁文全贺笛李鹏飞刘云云姚利芳张鹤鸣章俊强韩文明徐海彬
Owner JIANGSU HECHENG DISPLAY TECHCO