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Negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application of same

A liquid crystal composition, anisotropic technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as slow response time, and achieve the effect of high-definition bright spots and low rotational viscosity

Active Publication Date: 2017-12-01
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the response time problem of negative liquid crystals is a major problem encountered at present. The response time of FFS displays using negative liquid crystals is 50% or more slower than that of positive liquid crystal FFS displays.

Method used

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  • Negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application of same
  • Negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application of same
  • Negative dielectric anisotropy liquid crystal composition containing terphenyl structure and application of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0186] Table 2: Weight percent and performance parameters of each component in the liquid crystal composition

[0187]

[0188]

Embodiment 2

[0190] Table 3: Weight percent and performance parameters of each component in the liquid crystal composition

[0191]

Embodiment 3

[0193] Table 4: Weight percent and performance parameters of each component in the liquid crystal composition

[0194]

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Abstract

The invention relates to a negative dielectric anisotropy liquid crystal composition containing a terphenyl structure, which includes at least one of the compounds represented in the general formulas (I), at least one of the compounds represented in the general formulas (II), and at least one of the compounds represented in the general formulas (III). The compound (I) has a terphenyl structure and has very high optical anisotropy; the compound (II) contains cyclohexene and a 2,3-difluoro structure and is large in negative dielectric anisotropy and low in rotary viscosity; the compound (III) is a bicyclo compound and is low in rotary viscosity. The liquid crystal composition has low rotary viscosity, can be used in quick-responding liquid crystal display in various display modes, and can significantly improve display effects of a liquid crystal display when being applied in VA-mode displays, such as VA, MVA, PVA, PSVA and the like, or IPS-mode and FFS-mode displays.

Description

technical field [0001] The invention belongs to the field of liquid crystal technology, in particular to a negative dielectric anisotropy liquid crystal composition containing a terphenyl structure and its application. Background technique [0002] At present, liquid crystals have been widely used in the field of information display, and at the same time, some progress has been made in the application in optical communication (S.T.Wu, D.K.Yang. Reflective Liquid Crystal Displays. Wiley, 2001). In recent years, the application fields of liquid crystal compounds have been significantly expanded to various display devices, electro-optic devices, electronic components, sensors, etc. Nematic liquid crystal compounds have been most widely used in flat panel displays, especially for TFT active matrix system. [0003] At present, negative liquid crystals are widely used in large-size TV liquid crystal displays, especially the emergence of PSVA technology, which makes negative liqui...

Claims

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Application Information

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IPC IPC(8): C09K19/44C09K19/12
CPCC09K19/12C09K19/44C09K2019/123
Inventor 陈卯先储士红王杰未欣陈海光姜天孟郭云鹏袁瑾伍嘉琦田会强
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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