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Liquid crystal composition and liquid crystal display device comprising the liquid crystal composition

A technology for liquid crystal compositions and compounds, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of insufficient nematic temperature range, high viscosity, and insufficient response, and achieve suitable optical anisotropy. , low viscosity, wide nematic phase range effect

Active Publication Date: 2016-08-17
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid crystal composition disclosed in Chinese Patent Application Publication No. CN1778867A has a nematic phase temperature range not wide enough. Although the liquid crystal composition disclosed in Chinese Patent Application Publication No. CN101679867A has a sufficiently wide upper limit of nematic phase temperature, the viscosity is relatively large , the response is not fast enough

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The compounds and weight fractions listed in Table 3 were formulated into the nematic liquid crystal composition of the present invention, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are also listed in Table 3.

[0054] table 3

[0055]

[0056] Apparently compared with Comparative Example 1, the clearing point of Example 1 is greatly increased, and the viscosity is decreased.

Embodiment 2

[0058] The compounds and weight fractions listed in Table 4 were formulated into the nematic liquid crystal composition of the present invention, which was filled between the two substrates of the liquid crystal display for performance testing, and the test data are also listed in Table 4.

[0059] Table 4

[0060]

[0061] Obviously, compared with Comparative Example 1, the clearing point of Example 2 is greatly increased.

Embodiment 3

[0063] The compounds and weight fractions listed in Table 5 were formulated into the nematic liquid crystal composition of the present invention, which was filled between the two substrates of the liquid crystal display for performance testing. The test data are also listed in Table 5.

[0064] table 5

[0065]

[0066] Obviously, compared with Comparative Example 1, the clearing point of Example 3 is greatly increased.

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Abstract

The invention provides a liquid crystal composition with suitable negative dielectric anisotropy, suitable optical anisotropy, low viscosity and wide range of nematic phase, comprising 5%-30% by weight A compound of general formula (I), 5%-50% of a compound of general formula (II), 5%-30% of a compound of general formula (III), 5%-50% of a compound of general formula (IV) and 1%-15% of the compound of general formula (V), wherein, R1, R3, R5, R7, R9, R10 are independently linear alkyl groups of 1 to 10 carbon atoms; R2, R4, R6 are 1 straight-chain alkyl or alkoxy of 1 to 10 carbon atoms; R8 is straight-chain alkyl or alkoxy of 1 to 10 carbon atoms or alkenyl of 2 to 10 carbon atoms. The liquid crystal composition is suitable for active matrix addressing liquid crystal displays in VA or IPS mode. The present invention also provides a liquid crystal display device comprising the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition and a liquid crystal display device including the liquid crystal composition, in particular to a liquid crystal composition suitable for an active matrix addressing liquid crystal display (active matrix, hereinafter referred to as AM). Specifically, the present invention relates to a liquid crystal composition with a negative dielectric anisotropy and a vertical alignment (vertical alignment, hereinafter referred to as VA) mode or lateral electric field switching (in-plane switching, hereinafter) containing the composition Abbreviated as IPS) mode device. Background technique [0002] In the liquid crystal display device, the classification based on the operation mode of the liquid crystal includes: phase change (phase change, hereinafter referred to as PC), twisted nematic (hereinafter referred to as TN), super twisted nematic (hereinafter referred to as STN), and super twisted nematic (her...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 徐海彬吴凤朱霞张宏伟游石枝
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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