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Liquid crystal composition and application thereof as well as liquid crystal display comprising liquid crystal composition

A liquid crystal composition and compound technology, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve problems such as low resistivity, long response time, high operating voltage, etc.

Inactive Publication Date: 2012-08-15
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these liquid crystal compositions have significant disadvantages
Most of them, among other disadvantages, lead to unfavorably long response times, have too low resistivity and require too high operating voltages
In addition, many existing liquid crystal materials are not particularly stable when stored at low temperatures

Method used

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  • Liquid crystal composition and application thereof as well as liquid crystal display comprising liquid crystal composition
  • Liquid crystal composition and application thereof as well as liquid crystal display comprising liquid crystal composition
  • Liquid crystal composition and application thereof as well as liquid crystal display comprising liquid crystal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Prepare the liquid crystal composition of the present invention by each compound listed in Table 3 and the weight percentage, it is filled between the two substrates of the liquid crystal display for performance testing, and the test data are shown in the following table:

[0106] Table 3 liquid crystal composition formula and test performance thereof

[0107]

[0108] The composition is characterized by favorable optical anisotropy, low rotational viscosity, high clearing point and fast response speed. Therefore, it is suitable for outdoor equipment and low temperature environment.

Embodiment 2

[0110] The liquid crystal composition of the present invention is prepared by each compound listed in Table 4 and the weight percentage, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0111] Table 4 liquid crystal composition formula and test performance thereof

[0112]

[0113] The composition is characterized by favorable optical anisotropy, very low rotational viscosity, high clearing point and very fast response speed. Therefore, it is suitable for outdoor equipment and low temperature environment.

Embodiment 3

[0115] The liquid crystal composition of the present invention is prepared by each compound listed in Table 5 and the weight percentage, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

[0116] Table 5 liquid crystal composition formula and test performance thereof

[0117]

[0118] The composition is characterized by favorable optical anisotropy, low threshold voltage, excellent power saving performance and fast response speed. Therefore, it is suitable for outdoor equipment and low temperature environment.

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Abstract

The invention provides a liquid crystal composition and application thereof. The liquid crystal composition comprises a compound of general formula (I) accounting for 1-50 percent of the total weight of the liquid crystal composition, a compound of general formula (II) accounting for 5-60 percent of the total weight of the liquid crystal composition, a compound of general formula (III) accounting for 1-60 percent of the total weight of the liquid crystal composition and a compound of general formula (IV) accounting for 0-50 percent of the total weight of the liquid crystal composition. The liquid crystal composition has suitably high dielectric anisotropy, wide nematic phase range and suitable optical anisotropy, and can be used for outdoor operation and ensure good image displaying effect without image tail; the low temperature of the nematic phase can reach minus 30 DEG C, and the requirement of low-temperature operation can be met; under low temperature, storing for over 500 hours fundamentally has no influence on the performance; and change in voltage over temperature is low, and response is quick at low temperature. The invention also provides a liquid crystal display comprising the liquid crystal composition.

Description

technical field [0001] The invention relates to a liquid crystal composition, in particular to a liquid crystal composition with high dielectric anisotropy, wide nematic phase range and suitable refractive index anisotropy and its application. Background technique [0002] Liquid crystal display (LCD) is a display that utilizes the photoelectric changes of liquid crystals. It has attractive advantages such as small size, light weight, low power consumption, and good display quality. Therefore, it has become the mainstream of flat-panel displays in recent years. The electro-optical modes used in existing liquid crystal displays are, for example, twisted nematic (TN)-, super-twisted nematic (STN)-, optically compensated bending (OCB)- and electrically controlled birefringence (ECB)-modes and their various variants of the pattern. All of these modes use an electric field that is substantially perpendicular to the substrate, or to the liquid crystal layer. In addition to these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/32C09K19/30G02F1/13
CPCC09K2019/0466C09K19/42C09K19/30C09K2019/301C09K2019/3071C09K2019/3004C09K2019/3016C09K19/32G02F1/13
Inventor 韩文明谭玉东马定福王毅明宋晓龙于一飞陈昭远游石枝
Owner JIANGSU HECHENG DISPLAY TECHCO
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