Liquid crystal composition containing pyranyl compound

A technology for liquid crystal compositions and compounds, applied in the directions of liquid crystal materials, chemical instruments and methods, to achieve the effects of excellent performance, low voltage and high resistivity

Active Publication Date: 2015-09-09
BEIJING CHENGZHI YONGHUA DISPLAY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But so far, no single liquid crystal monomer has been used alone in liquid crystal displays without being combined with other compounds to meet the performance requirements.

Method used

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  • Liquid crystal composition containing pyranyl compound
  • Liquid crystal composition containing pyranyl compound
  • Liquid crystal composition containing pyranyl compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Prepare the liquid crystal composition of the present invention according to each compound listed below and the weight percentage content,

[0083]

[0084]

[0085] The above liquid crystal composition was filled between the two substrates of the liquid crystal display for performance testing. The test results were: Cp: 87°C; Δn: 0.105; Δε: 7.2; γ 1 : 65mPa·s;

[0086] The liquid crystal composition has high clearing point, moderate optical anisotropy, suitably high dielectric anisotropy and low rotational viscosity, so it is very suitable for fast-response TN-TFT and IPS-TFT displays.

Embodiment 2

[0088] Prepare the liquid crystal composition of the present invention according to each compound listed below and the weight percentage content,

[0089]

[0090]

[0091] The above liquid crystal composition was filled between the two substrates of the liquid crystal display for performance testing. The test results were: Cp: 94°C; Δn: 0.125; Δε: 7.8; γ 1 : 65mPa·s;

[0092] The liquid crystal composition has a high clearing point, a slightly high optical anisotropy, a moderately high dielectric anisotropy, and a very low rotational viscosity, so it is very suitable for a fast-response TN-TFT display.

Embodiment 3

[0094] Prepare the liquid crystal composition of the present invention according to each compound listed below and the weight percentage content,

[0095]

[0096]

[0097] The above liquid crystal composition was filled between the two substrates of the liquid crystal display for performance testing. The test results were: Cp: 87°C; Δn: 0.105; Δε: 7.2; γ 1 : 65mPa·s;

[0098] The liquid crystal composition has a high clearing point, moderate optical anisotropy, appropriately high dielectric anisotropy and low rotational viscosity, and is therefore very suitable for fast-response IPS-TFT displays.

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PUM

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Abstract

The invention relates to a liquid crystal composition containing a pyranyl compound. The liquid crystal composition comprises one or more compounds shown in a general formula I in the specification, one or more compounds shown in a general formula II in the specification, one or more compounds shown in a general formula III in the specification, one or more compounds shown in a general formula IV in the specification, and one or more compounds shown in a general formula V in the specification. The liquid crystal composition provided by the invention is excellent in performance, has the characteristics of low rotary viscosity, short response time, wide nematic phase range, appropriate optical anisotropy and the like, is suitable for an active matrix electrooptic element and a liquid crystal display, and can be used for manufacturing a TFT-LCD (Thin Film Transistor-Liquid Crystal Display). All parameters in the general formulas are described in the specification.

Description

technical field [0001] The invention relates to a liquid crystal composition containing a pyranyl liquid crystal compound, in particular to a liquid crystal composition used in active matrix displays, especially TN, STN, IPS and VA displays. Background technique [0002] Liquid crystal displays using liquid crystal compositions are widely used in displays such as instruments, computers, and televisions. For the field of liquid crystal display technology, although the market has been huge in recent years, the technology has gradually matured. Liquid crystal display elements are divided into the following modes according to the display mode: twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane mode (IPS), vertical alignment (VA) mode, thin film transistor liquid crystal display (TFT) -LCD) has become the mainstream of flat panel display development. High-quality TFT-LCD requires high contrast, high definition, high-speed response, high brightness and wide vi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/44C09K19/46
Inventor 吕文海员国良韩耀华张兴华瑞茂侯泽峰李明王建
Owner BEIJING CHENGZHI YONGHUA DISPLAY TECHNOLOGY CO LTD
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