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Liquid crystal composition with high transmittance, and application thereof

A technology of liquid crystal composition and high transmittance, applied in liquid crystal materials, optics, instruments, etc., can solve problems such as reducing backlight life and increasing backlight energy consumption

Active Publication Date: 2017-04-05
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 composition with high transmittance, and application thereof
  • Liquid crystal composition with high transmittance, and application thereof
  • Liquid crystal composition with high transmittance, and application thereof

Examples

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preparation example Construction

[0222] The preparation of the liquid crystal composition in the embodiments of the present invention adopts the following methods:

[0223] The uniform liquid crystal is prepared by 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 addition. Usually, the liquid crystal compound is weighed and mixed in order from high to low melting point. Heat and stir at 60-100°C to make each component melt uniformly, then filter, rotate and steam, and finally package to obtain the target sample.

[0224] Unless otherwise stated, percentages in the context are percentages by weight and all temperatures are given in degrees Celsius. Use the following abbreviations:

[0225] Δn is optical anisotropy (25℃), Δε is dielectric anisotropy (25℃, 1000Hz), ε ⊥ Is the vertical dielectric (25℃, 1000Hz), Cp is the clearing point (℃) of the liquid crystal ...

Embodiment 1

[0236] Take the following weight percentages of liquid crystal compounds and prepare the liquid crystal composition by the method described in the present invention. The specific ratio and performance parameters of the obtained liquid crystal composition are shown in Table 1:

[0237] Table 1 The weight percentage and performance parameters of each component in the liquid crystal composition of Example 1

[0238] category Component Weight percentage (%) Performance parameter Parameter value I 3DUQKF15 Δn0.100 I 2DPUQKF6 Δε+8.8 I 3DPUQKF6ε ⊥

[0239] X 3PPGUF2K33

Embodiment 2

[0241] Take the following weight percentage of the liquid crystal compound and prepare the liquid crystal composition by the method described in the present invention. The specific ratio and the performance parameters of the obtained liquid crystal composition are shown in Table 2:

[0242] Table 2 The weight percentage and performance parameters of each component in the liquid crystal composition of Example 2

[0243] category Component Weight percentage (%) Performance parameter Parameter value I 3CDUQKF13 Δn0.097 I 3PUQKF10 Δε+12.0 I 2APUQKF10ε ⊥

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Abstract

The invention provides a liquid crystal composition with high transmittance. The liquid crystal composition contains at least one or more of compounds represented by general formula I shown in the description and at least one of compounds represented by formula II shown in the description. The liquid crystal composition has the characteristics of low viscosity, high resistivity, good low temperature intersolubility, fast response speed and excellent transmittance, and can be used in fast response liquid crystal display with multiple display modes. FFS and IPS are most mainstream display modes at present, but the problem of low transmittance of the FFS and the IPS is a key problem to be solved. A result of experiments shows that the liquid crystal composition with large dielectric strength has high transmittance, so the brightness is improved without increasing the electric energy consumption. The liquid crystal composition provided by the invention has large dielectric strength, and effectively improves the transmittance of liquid crystal displays, and especially the displays in the FFS and IPS display modes.

Description

Technical field [0001] The invention relates to a liquid crystal composition, belonging to the field of liquid crystal display materials, and in particular to a liquid crystal composition with high transmittance and its application. 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 of optical communications (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001). In recent years, the application fields of liquid crystal compounds have significantly expanded to various display devices, electro-optical 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 so far been the most widely used in flat panel displays. Especially used in TFT active matrix systems. [0003] The liquid crystal display has ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
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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