Liquid crystal composition and display comprising same

A technology for liquid crystal compositions and compounds, which can be used in liquid crystal materials, instruments, chemical instruments and methods, etc., and can solve problems such as low thresholds

Active Publication Date: 2015-04-08
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no substance that can satisfy such properties as a single compound
For example, the negative liquid crystal composition species disclosed in Chinese Patent Publication No. CN101407719A has a refractive index of .186 and a viscosity of 49.1 (mPa·s), but the threshold value is not low enough

Method used

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  • Liquid crystal composition and display comprising same
  • Liquid crystal composition and display comprising same
  • Liquid crystal composition and display comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The liquid crystal composition of Example 1 was prepared by each compound listed in Table 3 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:

[0067] Table 3 liquid crystal composition formula and test performance thereof

[0068]

Embodiment 2

[0070] The liquid crystal composition of Example 2 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 table below:

[0071] Table 4 liquid crystal composition formula and test performance thereof

[0072]

[0073]

Embodiment 3

[0075] The liquid crystal composition of Example 3 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:

[0076] Table 5 liquid crystal composition formula and test performance thereof

[0077]

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Abstract

The invention provides a liquid crystal composition which has negative dielectric anisotropy. The liquid crystal composition comprises a compound of a general formula I accounting for 1-30% of the total weight of the liquid crystal composition, and 15-70% of a compound of a general formula II-1 and / or II-2, and 10-55% of a compound of free general formula III. The liquid crystal composition provided by the invention can be used for a liquid crystal element, and has properties of low viscosity, high response speed, excellent low-temperature reliability and the like. The liquid crystal composition provided by the invention is especially suitable for liquid crystal displays such as VA, PSVA (Polymer Stabilize Vertical Align), PS-IPS and the like. The invention also provides a liquid crystal display comprising the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition with negative dielectric anisotropy, in particular to a liquid crystal composition with low viscosity, appropriate optical anisotropy, dielectric anisotropy and low temperature stability, and a liquid crystal composition containing the liquid crystal composition liquid crystal display element. Background technique [0002] Liquid crystal display devices, represented by clocks and electronic calculators, are used in various household appliances, measurement equipment, automotive instrument panels, word processors, electronic dictionaries, printers, computers, televisions, etc. Typical liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, DS (dynamic light scattering) type, GH (guest-host) type, and IPS (in-plane switching) Type, OCB (Optically Compensated Birefringence) type, ECB (Voltage Controlled Birefringence) type, VA (Vertical Alignment) ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 韩文明胡娟李鹏飞
Owner JIANGSU HECHENG DISPLAY TECHCO
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