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Liquid crystal composition and application thereof

A liquid crystal composition and compound technology, applied in liquid crystal materials, optics, instruments, etc., can solve the problems of reducing backlight life, increasing backlight energy consumption, etc., to improve transmittance characteristics, improve clearing point and optical anisotropy, The effect of excellent comprehensive performance

Active Publication Date: 2015-05-20
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The main function of the liquid crystal display is to act as a light switch. After the light passes through the liquid crystal layer, the light loss is only about 10% of the original light. Therefore, in order to obtain a brighter display effect, the brightness of the backlight must be increased, which will increase the energy consumption of the backlight. and reduce backlight lifetime

Method used

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  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof
  • Liquid crystal composition and application thereof

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Experimental program
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preparation example Construction

[0102] The preparation of liquid crystal composition in the embodiment of the present invention all adopts following method:

[0103] 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.

[0104] Unless otherwise stated, percentages in this context are by weight and all temperatures are given in degrees Celsius. Use the following abbreviations:

[0105] △n is optical anisotropy (20°C), Δε is dielectric anisotropy (25°C, 1000Hz), ε ⊥ is the vertical dielectric (25°C, 1000Hz), V 10 is the threshold voltage, which is the characteri...

Embodiment 1

[0115] 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:

[0116] The weight percent and performance parameter of each component in the liquid crystal composition of table 1 embodiment 1

[0117] category

[0118] The composition has low viscosity and fast response time, and is suitable for fast-response liquid crystal display devices.

Embodiment 2

[0120] 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:

[0121] The weight percent and performance parameter of each component in the liquid crystal composition of table 2 embodiment 2

[0122] category

[0123] The composition has high dielectric anisotropy and low viscosity. It is suitable for liquid crystal display devices driven by fast response and low voltage.

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Abstract

The invention provides a liquid crystal composition which comprises the following components: 5-40% of one or more compounds shown by the general formula (I), 1-30% of one or more compounds shown by the general formula (II), 10-60% of one or more compounds shown by the general formula (III), 0-80% of one or more compounds shown by the general formula (IV) or (V) and 0-35% of one or more compounds shown by the general formula (VI) or (VII). The liquid crystal composition provided by the invention has the advantages of low viscosity, high resistivity, good low-temperature intersolubility, fast response and excellent transmittance feature, and can be applied to fast-response liquid crystal display of multiple display modes. By adopting the liquid crystal composition to a display of TN, IPS or FFS mode, the display effect of the liquid crystal display can be obviously improved; and the liquid crystal composition is particularly applicable to the FFS display mode and can effectively improve the transmittance feature of an FFS liquid crystal display.

Description

technical field [0001] The invention belongs to the field of liquid crystal materials, in particular to a liquid crystal composition and its application in TN, IPS or FFS mode displays. Background technique [0002] At present, liquid crystals are widely used in the field of information technology, and at the same time, some progress has been made in the application of 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 with the di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 陈海光陈卯先杭德余姜天孟田会强储士红贺树芳孙丽丽张琳
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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