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Liquid crystal composition and liquid crystal display element using same

A liquid crystal composition and compound technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as poor contrast, achieve good solubility, reduce viscosity, and achieve high-speed response effects

Inactive Publication Date: 2015-09-02
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the deviation between the drop amount and the optimum value becomes large, the pre-designed refractive index of the liquid crystal display element and the balance of the driving electric field will collapse, resulting in display defects such as spots and poor contrast.

Method used

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  • Liquid crystal composition and liquid crystal display element using same
  • Liquid crystal composition and liquid crystal display element using same
  • Liquid crystal composition and liquid crystal display element using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1～3

[0932] Liquid crystal compositions having the compositions shown in Table 1 were prepared using the following compounds. In addition, the physical property values ​​of the obtained liquid crystal composition are shown in Table 2.

[0933]

[0934]

[0935]

[0936] [Table 1]

[0937]

[0938] [Table 2]

[0939]

Embodiment 2～4

[0941] Liquid crystal compositions having the compositions shown in Table 3 were prepared using the following compounds. In addition, the physical property values ​​of the obtained liquid crystal composition are shown in Table 4.

[0942]

[0943]

[0944] [table 3]

[0945]

[0946] [Table 4]

[0947]

Embodiment 5～7

[0949] Liquid crystal compositions having the compositions shown in Table 5 were prepared using the following compounds. In addition, the physical property values ​​of the obtained liquid crystal composition are shown in Table 6.

[0950]

[0951]

[0952] [table 5]

[0953]

[0954] [Table 6]

[0955]

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Abstract

The purpose of the present invention is to provide a liquid crystal composition having a positive Δε, the composition having a liquid crystal phase that has a broad temperature range, low viscosity, favorable solubility at low temperature, high relative resistance and voltage retention rate, and stability towards heat and light. Furthermore, in order to achieve this purpose, a liquid crystal composition is provided that contains at least one compound expressed by formula (i) and at least one compound selected from the compounds expressed by formula (ii-1) and the compounds expressed by formula (ii-2).

Description

technical field [0001] The present invention relates to a nematic liquid crystal composition having a positive dielectric constant anisotropy (Δε) useful as a liquid crystal display material, and a liquid crystal display element using the same. Background technique [0002] Liquid crystal display elements are used in various measuring instruments represented by clocks and calculators, automotive panels, word processors, electronic notebooks, printers, computers, televisions, clocks, advertising display boards, etc. Representative liquid crystal display methods include TN (twisted nematic) type, STN (super twisted nematic) type, vertical alignment type using TFT (thin film transistor), and IPS (in-plane switching) type. The liquid crystal compositions used in these liquid crystal display elements are required to be stable against external stimuli such as moisture, air, heat, light, etc., to display a liquid crystal phase over as wide a temperature range as possible around roo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/42C09K19/20C09K19/30G02F1/13
CPCC09K2019/3004C09K2019/3422C09K2019/3025C09K2019/3019C09K2019/3009C09K19/20C09K19/44G02F2001/13706C09K2019/0466C09K2019/301G02F1/13706
Inventor 河村丞治丹羽雅裕根岸真
Owner DIC CORP
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