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Liquid crystal composition and liquid crystal display (LCD) containing same

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

Active Publication Date: 2012-06-27
JIANGSU HECHENG DISPLAY TECHCO
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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 (LCD) containing same
  • Liquid crystal composition and liquid crystal display (LCD) containing same
  • Liquid crystal composition and liquid crystal display (LCD) containing same

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, lower viscosity and wider nematic range. The liquid crystal composition comprises the following compounds in percentage by weight: 5%-30% of compound of general formula (I), 5%-50% of compound of general formula (II), 5%-30% of compound of general formula (III), 5%-50% of compound of general formula (IV) and 1%-15% of compound of general formula (V), wherein R1, R3, R5, R7, R9 and R10 are mutually and independently a linear alkyl with 1-10 carbon atoms, R2, R4 and R6 are respectively a linear alkyl or alkoxy with 1-10 carbon atoms, and R8 is a linear alkyl or alkoxy with 1-10 carbon atoms or an alkenyl with 2-10 carbon atoms. The liquid crystal composition is applicable to VA (Vertical Alignment) or IPS (In-Plane Switching) type active matrix addressing LCDs. The invention further provides an LCD (liquid crystal display) containing 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 in-plane switching (in-plane switching, Hereinafter referred to 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 TN), and super twisted nematic (hereinafter referred to as TN). STN), electri...

Claims

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Application Information

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Patent Type & Authority Applications(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 TECHCO
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