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Liquid crystal medium and application thereof

A liquid crystal medium and compound technology, applied in the field of liquid crystal display materials, can solve the problems of reducing the life of the backlight and increasing the energy consumption of the backlight.

Active Publication Date: 2017-03-22
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 6% of the original. 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 medium and application thereof
  • Liquid crystal medium and application thereof
  • Liquid crystal medium and application thereof

Examples

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preparation example Construction

[0136] The preparation of liquid crystal medium in the embodiment of the present invention all adopts following method:

[0137] 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.

[0138] Unless otherwise stated, percentages in this context are by weight and all temperatures are given in degrees Celsius. Use the following abbreviations:

[0139] Δn is optical anisotropy (25°C), Δε is dielectric anisotropy (25°C, 1000Hz), ε ⊥ is the vertical dielectric (25°C, 1000Hz), Cp is the clearing point of the liquid crystal medium (°C), ...

Embodiment 1

[0150] Embodiment 1 takes the liquid crystal compound of the following weight percentage and prepares liquid crystal medium with the method described in the present invention, and the performance parameter of concrete proportioning and gained liquid crystal medium is shown in Table 2:

[0151] The weight percentage and performance parameter of each component in the liquid crystal medium of table 2 embodiment 1

[0152] category components weight percentage (%) performance parameters parameter value I 3DUQKF 15 △n 0.100 I 2DPUQKF 6 Δε +9.3 I 3DPUQKF 6 ε ⊥

[0153] VIII 3CPGUOCF 3

Embodiment 2

[0155] Take the liquid crystal compound of the following weight percentage and prepare liquid crystal medium with the method described in the present invention, the performance parameter of concrete proportioning and gained liquid crystal medium is shown in Table 3:

[0156] The weight percent and performance parameter of each component in the liquid crystal medium of table 3 embodiment 2

[0157] category components weight percentage (%) performance parameters parameter value I 3CDUQKF 13 △n 0.099 II 3CCV 42 Δε +12.5 III 2APUQKF 10 ε ⊥

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Abstract

The invention provides a liquid crystal medium prepared from a compound containing dioxygen heterocyclic rings and 2-methyl-3,4,5-trifluoro-henyl. The liquid crystal medium has the low viscosity, the high resistance rate, the good low-temperature intersolubility, the high response speed and the excellent transmittance characteristic and can be applied to fast-response liquid crystal displaying in multiple display modes. The liquid crystal medium effectively increases the vertical dielectric, effectively improves the transmittance characteristic of a liquid crystal display, has the very low rotary viscosity gamma 1 and the high elastic constant and response speed and is suitable for a TN mode, an IPS mode and an FFS mode and especially suitable for various application of the IPS mode and the FFS mode.

Description

technical field [0001] The invention relates to a liquid crystal medium, which belongs to the field of liquid crystal display materials, in particular to a liquid crystal medium suitable for IPS and FFS type liquid crystal displays. 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 exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/34C09K19/44G02F1/1333
Inventor 陈卯先陈海光姜天孟储士红王杰未欣张琳田会强苏学辉
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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