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Liquid crystal composition with large optical anisotropy and application

An optical anisotropy, liquid crystal composition technology, applied in optics, liquid crystal materials, nonlinear optics, etc., can solve problems such as difficulties, and achieve the effect of wide range and excellent performance

Pending Publication Date: 2021-12-07
重庆汉朗精工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, LCOS products often need to respond quickly, so it is very important to develop suitable liquid crystal materials. For the improvement of response time, it is very difficult to improve the response speed only by improving the performance of liquid crystals.

Method used

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  • Liquid crystal composition with large optical anisotropy and application
  • Liquid crystal composition with large optical anisotropy and application
  • Liquid crystal composition with large optical anisotropy and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] According to the composition of the liquid crystal composition in Table 1, prepare the liquid crystal composition with reference to the above-mentioned method of the present invention, pour it into a 4 μm VA liquid crystal test box to test ε∥, ε⊥, Δε, and pour it into a 20 μm VA liquid crystal test box to test γ1, and measure the physical properties The parameter results are shown in Table 1.

[0072] The composition and performance test data of the liquid crystal composition of table 1 embodiment 1

[0073]

Embodiment 2

[0075] According to the composition of the liquid crystal composition in Table 2, prepare the liquid crystal composition with reference to the above-mentioned method of the present invention, pour it into a 4 μm VA liquid crystal test box to test ε∥, ε⊥, Δε, and pour it into a 20 μm VA liquid crystal test box to test γ1, and measure the physical properties The parameter results are shown in Table 2.

[0076] Table 2 The composition and performance test data of the liquid crystal composition of Example 2

[0077]

Embodiment 3

[0079] According to the composition of the liquid crystal composition in Table 3, prepare the liquid crystal composition with reference to the above-mentioned method of the present invention, pour it into a 4 μm VA liquid crystal test box to test ε∥, ε⊥, Δε, and pour it into a 20 μm VA liquid crystal test box to test γ1, and measure the physical properties The parameter results are shown in Table 3.

[0080] Table 3 The composition and performance test data of the liquid crystal composition of Example 3

[0081]

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Abstract

The invention relates to a liquid crystal composition with large optical anisotropy and application, and belongs to the technical field of liquid crystal materials. The liquid crystal composition comprises the following four compound components in a general formula A, a general formula B, a general formula C and a general formula D in percentage by weight: 35%-55% of the component A, 10%-25% of the component B, 5%-25% of the component C and 20%-30% of the component D. The liquid crystal composition provided by the invention has large optical anisotropy, relatively large negative dielectric anisotropy, very wide nematic phase temperature range and excellent performance, is suitable for being applied to a negative display mode, and is very suitable for being applied to an LCOS (Liquid Crystal On Silicon) display mode. The liquid crystal composition with large refractive index anisotropy (delta n is mostly greater than 0.2) is very beneficial to quick response of liquid crystal devices. Meanwhile, the liquid crystal material provided by the invention also has a very wide nematic phase temperature, and a wider range is provided for the application of the liquid crystal material in the aspect of devices.

Description

technical field [0001] The invention relates to a liquid crystal composition with large optical anisotropy and its application. The liquid crystal composition is suitable for negative display mode, such as LCOS display mode, and belongs to the technical field of liquid crystal materials. Background technique [0002] Liquid crystal displays first appeared in the 1970s as electronic computers and digital clock displays. With the development and progress of technology, liquid crystal displays have now spread throughout our daily lives. LCOS liquid crystal display (ie Liquid Crystal on Silicon) is a new product launched in the market in recent years, it is used in projection equipment, glasses-type micro-vision display, especially in portable micro-projectors has been widely used. [0003] LCOS (Liquid Crystal on Silicon) display is a new type of reflective projection display device, which uses semiconductor silicon crystal technology to control liquid crystals and then "projec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/44G02F1/1333
Inventor 胡艳华黄善兴王恩洋李蓝苹张雪林丰张国庆张曼
Owner 重庆汉朗精工科技有限公司
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