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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AI-Extracted 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 th...

Method used

By the contrast of embodiment 7-12 and comparative example 2, liquid crystal composition of the present invention is by adding the compound of general formula I and general formula II, and t...

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.

Application Domain

Liquid crystal compositionsNon-linear optics

Technology Topic

Dielectric anisotropyAnalytical chemistry +2

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Examples

Experimental program(12)
Comparison scheme(2)

Example Embodiment

[0070] Example 1

[0071] In the present embodiment, the liquid crystal composition comprises a mass percentage of the components shown in the following table, and the table below lists the results of the performance tests:

[0072] 2CPP2V1 (i-1) 2％ Cp (° C) 76 3CP2 (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％

Example Embodiment

[0073] Example 2

[0074] In the present embodiment, the liquid crystal composition comprises a mass percentage of the components shown in the following table, and the table below lists the results of the performance tests:

[0075]

[0076]

Example Embodiment

[0077] Example 3

[0078] In the present embodiment, the liquid crystal composition comprises a mass percentage of the components shown in the following table, and the table below lists the results of the performance tests:

[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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Liquid crystal composition and liquid crystal display device

AI-Extracted Technical Summary

Problems solved by technology

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Description & Claims & Application Information

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