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Liquid crystal composite

A technology for liquid crystal compositions and compounds, which can be used in liquid crystal materials, optics, instruments, etc., and can solve the problems of high viscosity and slow response time of negative liquid crystals.

Active Publication Date: 2015-02-25
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the positive liquid crystal is used in IPS / FFS display mode, it can obtain fast response and good reliability; while the negative liquid crystal can obtain higher transmittance when it is used in IPS / FFS display mode, but due to the negative liquid crystal Higher viscosity, so slower response time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079]

[0080]

[0081] As can be seen from the comparison of Example 1 and Comparative Example 1, after adding the compound of Component I-b in Example 1, the transmittance increases obviously, and other aspects of performance, clearing point, refractive index, There is no loss in response time, resistivity and voltage retention, and the level is still comparable to that of pure liquid crystal, so that a mixed crystal with fast response, high transmittance and good stability is obtained.

Embodiment 2

[0083]

[0084]

[0085] The mixed crystal compound in Example 2 has a large refractive index, high transmittance, and fast response, and is suitable for display applications such as large-size IPS-TVs with low cell thickness, and is conducive to realizing wide viewing angles, high contrast, and high-quality dynamic picture playback, etc. performance.

Embodiment 3

[0087]

[0088]

[0089] The mixed crystal compound of Example 3 has a wide temperature range, large refractive index, high transmittance, fast response, and good high and low temperature stability. Combined with the wide viewing angle advantage of the IPS display mode, it is suitable for vehicles, etc. Show applications.

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PUM

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Abstract

The invention discloses a liquid crystal composite. The liquid crystal composite is characterized by comprising at least one of components which are shown in a general formula I and have negative dielectric anisotropy and at least one of compounds which are shown in a formula II and have positive dielectric anisotropy. The liquid crystal composite has the characteristics of positive dielectric, high electric charge retention rate, low rotary viscosity and quick response, and especially has a characteristic of high transmittance and is applicable to production of high-transmittance and quick-response TFT-LCD.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and its application in liquid crystal displays. Background technique [0002] Display is the process of converting electrical signals (data information) into visible light (visual information), and the device that completes the display is the Man-Machine Interface (MMI). A flat panel display (Flat panel Display, FPD) is currently the most popular type of display device. Liquid Crystal Display (LCD) is the first product developed and commercialized among FPDs. Currently, a Thin Film Transistor Liquid Crystal Display (TFT-LCD) has become a mainstream product in LCD applications. [0003] In terms of working principle, LCD is a display device that uses the light emitted by the backlight, through polarizers and liquid crystal cells (liquid crystal molecules), to generate light and shade corresponding to the light to be displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C09K19/46G02F1/1333
Inventor 崔青张军波樊洁王伟丰景义贠国良温刚徐凯
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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