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Liquid crystal composition containing compound with dioxygen heterocyclic structure and application of liquid crystal composition

A technology for liquid crystal compositions and compounds, which is applied in liquid crystal materials, chemical instruments and methods, optics, etc., and can solve the problems of high viscosity, poor display effect of liquid crystal displays, and decreased contrast ratio.

Active Publication Date: 2014-03-19
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of the liquid crystal material itself (poor voltage and temperature stability, high viscosity, etc.), as the temperature drops, the display effect of the liquid crystal display becomes worse, mainly reflected in the shortcomings of decreased contrast and slower response time.

Method used

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  • Liquid crystal composition containing compound with dioxygen heterocyclic structure and application of liquid crystal composition
  • Liquid crystal composition containing compound with dioxygen heterocyclic structure and application of liquid crystal composition
  • Liquid crystal composition containing compound with dioxygen heterocyclic structure and application of liquid crystal composition

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Effect test

preparation example Construction

[0138] The preparation of liquid crystal composition in the embodiment of the present invention all adopts following method:

[0139] The preparation of uniform liquid crystal adopts the thermal dissolution method commonly used in the industry. First, the liquid crystal compound is weighed by weight percentage with a balance. There is no specific requirement for the order of weighing and adding. Usually, the liquid crystal compound is weighed and mixed in order of melting point from high to low. Heat and stir at 60-100°C to make each component melt evenly, then filter, spin evaporate, and finally package to obtain the target sample.

[0140] Unless otherwise stated, percentages in this context are by weight and all temperatures are given in degrees Celsius. Use the following abbreviations:

[0141] Δn is optical anisotropy (20°C), Δε is dielectric anisotropy (25°C, 1000Hz), V 10 is the threshold voltage, which is the characteristic voltage when the relative transmittance cha...

Embodiment 1

[0153] Take the liquid crystal compound in the following weight percentages and prepare the liquid crystal composition by the method described in the present invention. The specific proportion and the performance parameters of the obtained liquid crystal composition are shown in Table 1:

[0154] The weight percent and performance parameter of each component in the liquid crystal composition of table 1 embodiment 1

[0155] components

[0156] The composition has low viscosity and fast response time, and is suitable for fast-response liquid crystal display devices.

Embodiment 2

[0158] Take the liquid crystal compound in the following weight percentages and prepare the liquid crystal composition by the method described in the present invention. The specific proportion and the performance parameters of the obtained liquid crystal composition are shown in Table 2:

[0159] The weight percent and performance parameter of each component in the liquid crystal composition of table 2 embodiment 2

[0160] components

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Abstract

The invention relates to a liquid crystal composition containing a compound with a dioxygen heterocyclic structure and an application of the liquid crystal composition. The liquid crystal composition at least contains the compound as shown in the general formula (I). The liquid crystal composition provided by the invention is low in viscosity, high in electrical resistivity, good in low-temperature intersolubility, high in response speed, excellent in voltage and temperature stability and capable of remarkably improving the display effect of a liquid crystal display when used in a display in a TN (Twist Nematic), IPS (In-Plane Switching) or FFS (Fringe Field Switching) mode.

Description

technical field [0001] The invention relates to a liquid crystal composition containing a bisoxyheterocyclic compound and an application thereof, belonging to the field of liquid crystal materials. Background technique [0002] At present, liquid crystals are 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. For this reason, many different structures have been proposed, especially in the field of nematic liquid crystals, and nematic liquid crystal compounds have been most widely used in flat panel displays so far. Especially for TFT active matrix systems. [0003] Liquid crystal display has experienced a long development path wi...

Claims

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Application Information

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IPC IPC(8): C09K19/34C09K19/42C09K19/44G02F1/1333
Inventor 陈海光陈卯先杭德余姜天孟田会强储士红贺树芳苏学辉孙丽丽
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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