Liquid crystal compound containing tetrafluoro-dihydrophenanthrene structure and application of liquid crystal compound

A technology of tetrafluorodihydrophenanthrene and liquid crystal compounds, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of poor low temperature solubility, high viscosity, slow response speed, etc., and achieve good low temperature stability, moderate Clearing point, effect of large absolute value of dielectric anisotropy

Inactive Publication Date: 2018-09-28
烟台丰蓬液晶材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After long-term development, VA display has derived a variety of display modes, each with its own characteristics. The liquid crystal compound used in it has negative dielectric anisotropy. At the same time, many problems arise, such as poor solubility at low temperature, slow response speed, viscosity High disadvantage

Method used

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  • Liquid crystal compound containing tetrafluoro-dihydrophenanthrene structure and application of liquid crystal compound
  • Liquid crystal compound containing tetrafluoro-dihydrophenanthrene structure and application of liquid crystal compound
  • Liquid crystal compound containing tetrafluoro-dihydrophenanthrene structure and application of liquid crystal compound

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Embodiment E1

[0116] The formula composition and parameter of table 2 embodiment E1

[0117]

Embodiment E2

[0119] The formula composition and parameter of table 3 embodiment E2

[0120]

[0121]

Embodiment E3

[0123] The formula composition and parameter of table 4 embodiment E3

[0124]

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Abstract

The invention discloses a liquid crystal compound containing a tetrafluoro-dihydrophenanthrene structure and application of the liquid crystal compound. The liquid crystal compound has the advantagesof negative dielectric anisotropy, moderate refractive index, higher clearing point, lower viscosity and higher low-temperature intersolubility. The liquid crystal composition also contains liquid crystal compounds shown as general formulas II, III, IV and V, which have the characteristics of larger dielectric anisotropy absolute value, poor clearing point, higher stability and low-temperature intersolubility, higher UV resistance, lower viscosity, short response time and high VHR and resistivity; and the liquid crystal compound can be applied to display modes such as VA, MVA, PVA, FFS, PSVA,IPS and TFT.

Description

technical field [0001] The invention relates to a liquid crystal compound containing a tetrafluorodihydrophenanthrene structure and an application thereof, belonging to the technical field of liquid crystal materials. Background technique [0002] The early liquid crystal display mode was TN display. People used the combination of TN electro-optic effect and integrated circuit to make it into a liquid crystal display device (TN-LCD), which opened up broad prospects for the application of liquid crystal. TN-LCD has developed slowly since its large-scale industrial production, STN-LCD and TFT-LCD technologies have gradually matured, display mode types have gradually increased, and liquid crystal media with negative dielectric anisotropy have appeared, such as ECB, DAP, VAN, MVA , ASV, PVA, etc. [0003] The current liquid crystal display is usually a TN type display, but the contrast of this display is not high. Compared with TN display, VA display mode has better contrast a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/32C09K19/44C09K19/46G02F1/1333
CPCC09K19/32C09K19/44C09K19/46C09K2019/328G02F1/1333
Inventor 孙云峰马锋史子谦孙燕国新涛付博徐瑞丰佩川
Owner 烟台丰蓬液晶材料有限公司
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