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Liquid crystal composition with high optical anisotropy and liquid crystal display element

A liquid crystal composition and compound technology, applied in optics, liquid crystal materials, nonlinear optics, etc., can solve problems such as unsuitable 3D display mode, high viscosity, etc.

Active Publication Date: 2012-08-15
JIANGSU HECHENG DISPLAY TECHCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] For the liquid crystal composition with large optical anisotropy, CN101712874A mentions a large optical anisotropy liquid crystal composition with a refractive index of 0.3, but it has a relatively large viscosity and can only be applied to multi-stable liquid crystals and the like for response The requirements are not high, but the liquid crystal display mode that requires high refractive index anisotropy is not suitable for 3D display mode

Method used

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  • Liquid crystal composition with high optical anisotropy and liquid crystal display element
  • Liquid crystal composition with high optical anisotropy and liquid crystal display element
  • Liquid crystal composition with high optical anisotropy and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0093] The specific synthetic steps of the prepared compound II-E-3 are as follows:

[0094]

[0095] 1) Synthesis of lithium diisopropylamide (LDA)

[0096] Add 115mL of diisopropylamine and 100mL of tetrahydrofuran (THF) into a 1000mL three-necked flask, under nitrogen protection, and add 320mL of n-butyllithium (n-BuLi, 2.4mol / L) dropwise under temperature control at 0°C to -20°C. Stir at ~-20°C for 1 hour to prepare LDA.

[0097] 2) Synthesis of trifluorovinyl zinc chloride

[0098]

[0099] Add 53g of anhydrous zinc chloride and 100mL THF to a 1000mL three-necked flask, protect it with nitrogen, cool down to -70°C, inject 54g of 1,1,1,2-tetrafluoroethane gas, and control the temperature from -50°C to -70°C Slowly inject LDA under the liquid surface through the needle tube, and stir for 2 hours after the addition, to obtain trifluorovinyl zinc chloride.

[0100] 3) compound of synthetic formula a

[0101]

[0102] The compound of formula b (45 g produced by ou...

Embodiment 1

[0127] Mix the following structural monomers with the matrix liquid crystal composition (Table 2) at a weight ratio of 1:9, the two have good miscibility and can be mixed well:

[0128]

[0129] The extrapolation performance of the structural monomer is as follows:

[0130] Δn: 0.43

Embodiment 2

[0132] Mix the following structural monomers with the matrix liquid crystal composition (Table 2) at a weight ratio of 1:9, the two have good miscibility and can be mixed well:

[0133]

[0134] The extrapolation performance of the structural monomer is as follows:

[0135] Δn: 0.47

[0136] Table 2 lists the components, proportions and performance test results of the above-mentioned matrix liquid crystal composition filled between the two substrates of the liquid crystal display, so as to compare the performance with the liquid crystal composition of the present invention.

[0137] Table 2 Matrix liquid crystal composition formula and its test performance

[0138]

[0139] Composition Control Example 1 (CN101712874):

[0140] Table 3 lists the components and proportions of the liquid crystal composition of Comparative Example 1 and the performance test results of filling between the two substrates of the liquid crystal display, so as to compare the performance with th...

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PUM

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Abstract

The invention provides a liquid crystal composition. The liquid crystal composition comprises 5-80 percent by weight of a compound of general formula (I), 5-85 percent by weight of a compound of general formula (II) and 5-45 percent by weight of a compound of general formula (III). The liquid crystal composition has low viscosity coefficient, high optical anisotropy, high specific resistance, wide nematic phase range and excellent low-temperature intersolubility, is suitable for 3D display mode, and is especially suitable for 2D / 3D conversion. The invention also provides a liquid crystal display element comprising the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition used in a liquid crystal display device, in particular to a liquid crystal composition with large optical anisotropy. It also relates to a display element comprising the liquid crystal composition of the present invention, in particular to a 3D / 2D conversion liquid crystal display element. Background technique [0002] Following the high-definition picture quality display technology, 3D display technology has become the next focus of attention. There are more and more 3D games and movies at present, so the requirements for 3D liquid crystal displays are also getting higher and higher. [0003] At present, 3D displays mainly include glasses type and naked eye type. The naked-eye type includes light barrier technology, lenticular lens technology, pointing light source technology, etc. The glasses type includes three types: chromatic aberration type, shutter type and polarized light type (al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/42C09K19/18C09K19/30C09K19/34C09K19/20C09K19/32G02F1/1333
CPCC09K2019/0466C09K19/42G02F1/1333C09K19/32C09K2019/183C09K2019/0459C09K2019/301C09K2019/188C09K2019/3063C09K19/3458C09K2019/3004C09K19/18
Inventor 徐海彬张宏伟吴凤朱霞东方啸陈昭远游石枝
Owner JIANGSU HECHENG DISPLAY TECHCO
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