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Liquid crystal composition and liquid crystal display device

A liquid crystal composition and liquid crystal display technology, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of liquid crystal display, poor low temperature stability, high threshold voltage, etc., and achieve improved display performance, low temperature Good miscibility and high penetration rate

Active Publication Date: 2020-12-08
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the MLC displays disclosed so far, in addition to the need to further improve the response time, there are also other disadvantages that need to be improved, such as higher threshold voltage, poor low temperature stability, lower transmittance, etc.
[0011] Although the existing technology has improved the above-mentioned performance, it only improves the performance in one aspect, such as CN108018048A improves the transmittance, and does not comprehensively meet the requirements of other performances of liquid crystal display, such as obtaining good low-temperature mutual solubility and driving voltage. In the case of the situation, further improve the requirements for faster response speed and higher penetration rate

Method used

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  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device

Examples

Experimental program
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Effect test

Embodiment 1

[0071] In this embodiment, the liquid crystal composition includes the components shown in the following table in mass percentage, and the performance test results are listed in the following table:

[0072] 2CPP2V1(I-1) 2％ Cp(°C) 76 3CPP2(III-11) 12％ Δn 0.104 3CPWO2(II) 6％ Δε -3.4 3CCP1(III-12) 1％ γ1(mPa·s) 104 3CCWO2 (IV-2) 6％ 3C1OWO2 (IV-3) 13％ 2CC1OWO2(IV-4) 6％ 3CC1OWO2(IV-4) 10.5％ 3CC2(III-1) 23％ 5PP1(III-3) 9％ 2C1OWO2(IV-3) 8.5％ 4C1OWO2 (IV-3) 3％

Embodiment 2

[0074] In this embodiment, the liquid crystal composition includes the components shown in the following table in mass percentage, and the performance test results are listed in the following table:

[0075]

[0076]

Embodiment 3

[0078] In this embodiment, the liquid crystal composition includes the components shown in the following table in mass percentage, and the performance test results are listed in the following table:

[0079] 2CPP2V1(I-1) 10％ Cp(°C) 75 2CPP3(III-11) 5％ Δn 0.103 3CPWO2(II) 6％ Δε -3.4 3CCWO2 (IV-2) 6％ γ1(mPa·s) 95 3C1OWO2 (IV-3) 13％ 2CC1OWO2(IV-4) 6％ 3CC1OWO2(IV-4) 10.5％ 3CC2(III-1) 23％ 5PP1(III-3) 8％ 3CPO2(III-2) 1％ 2C1OWO2(IV-3) 8.5％ 3C1OWO3 (IV-3) 3％

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Abstract

The invention discloses a liquid crystal composition and a liquid crystal display device, the liquid crystal composition comprises at least one compound represented by a general formula I, at least one compound represented by a general formula II, at least one compound represented by a general formula III and at least one compound represented by a general formula IV, the composition has the advantages of moderate dielectric anisotropy, moderate optical anisotropy, fast response, high penetration rate, good low-temperature inter-solubility and the like, and the liquid crystal display device containing the composition has short response time and high penetration rate.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal materials, and relates to a liquid crystal composition and a liquid crystal display device. Background technique [0002] Liquid Crystal Display (LCD) has been developed rapidly due to its small size, light weight, low power consumption and excellent display quality, and is especially widely used in portable electronic information products. With the increase in the size of LCD screens for portable computers, office applications, and video applications, there are still some problems to be solved in order to enable LCD displays to be used for large-screen displays and eventually replace Cathode Ray Tubes (CRTs), Such as improving response speed, improving low temperature stability, etc. [0003] Liquid crystals are mainly used as dielectrics in display devices because the optical properties of such substances can be changed by applying an electrical voltage. Therefore, liquid crystal materi...

Claims

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Application Information

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IPC IPC(8): C09K19/44C09K19/46
CPCC09K19/44C09K19/46G02F1/13
Inventor 严为刚王立威马文阳韩文明徐海彬
Owner JIANGSU HECHENG DISPLAY TECHCO
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