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A kind of liquid crystal composition and liquid crystal display device

A technology of liquid crystal composition and compound, applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of poor light and thermal stability, can not meet the requirements, etc., achieve uniform polymerization particles, solve image retention, good low temperature Effect of miscibility and voltage retention

Active Publication Date: 2022-03-11
JIANGSU HECHENG DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the current liquid crystal media cannot meet the above-mentioned requirements at the same time. For example, although the liquid crystal compositions disclosed in Japanese Patent Laid-Open 9-124529 and Japanese Patent Laid-Open 2006-169472 have added thermally stable antioxidants, their resistance to light , thermal stability is still poor, can not meet the requirements

Method used

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  • A kind of liquid crystal composition and liquid crystal display device
  • A kind of liquid crystal composition and liquid crystal display device
  • A kind of liquid crystal composition and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] 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:

[0091] 5CCEWCO2 3％ △n 0.104 5CPEWC3 3％ △ε -2.7 5CCQWP3 3％ Cp(°C) 82.7 3CCV (IV-1) 12％ LTS(°C) ＜-20 3CCV1 (IV-1) 5％ VHR(65℃, initial) 95.23％ VCWO2(VI-1) 3％ VHR(65℃, UV) 86.26％ 1VCWO2(VI-1) 5％ 3C2WO2(VI-2) 21％ 3CC2WO2(VI-8) 3％ 2PWP4 2％ 2C1OWO2(I-1) 5％ VC1OWO2(I-1) 5％ VPP1(V) 4％ 3CCEPC3 (IV-9) 5％ 3CPPC3(II-6) 3％ 3CGPC3(II-7) 3％ 3CGPC2(II-7) 3％ 3PPO4(III-1) 6％ 3CPP2(II-1) 6％

Embodiment 2

[0093] 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:

[0094]

[0095]

Embodiment 3

[0097] 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:

[0098] 3CCV (IV-1) 43％ △n 0.106 3PPO1(III-1) 3％ △ε -3.2 3C1OWO2(I-1) 10％ Cp(°C) 82 2CC1OWO2(I-2) 7％ LTS(°C) ＜-20 3CC1OWO2(I-2) 13％ VHR(65℃, initial) 96.26％ 2CC1ONa(3F)O2 1％ VHR(65℃, UV) 88.33％ 3PWP1 5％ 3PWP2 5％ 2CPP2(II-1) 5％ 3CPP2(II-1) 5％ 2CPP3(II-1) 3％

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Abstract

The present invention provides a liquid crystal composition and a liquid crystal display device, the liquid crystal composition comprises at least one compound of general formula I, at least one compound of general formula II and at least one compound of general formula III, through these three The combination of these compounds can make the composition have better and higher optical anisotropy, dielectric anisotropy, good low temperature miscibility, and excellent resistivity and voltage retention after ultraviolet irradiation, which can be better Solve the problem of image retention. Moreover, when the polymerizable compound is polymerized in the liquid crystal composition, the polymerized particles are relatively uniform, and it is difficult to form larger polymerized particles, and no bright spots are formed in the panel of the liquid crystal display device to affect the display effect.

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 elements are represented by clocks, electronic calculators, and display screens, and are applied to various fields such as home appliances, computers, mobile phones, and electronic dictionaries. As liquid crystal display methods, the representative methods are TN (twisted nematic) type, STN (super twisted nematic) type, DS (dynamic light scattering) type, GH (guest host) type, IPS (in-plane switching) type, OCB (Optically Compensated Birefringence) type, ECB (Voltage Controlled Birefringence) type, VA (Vertical Alignment) type, CSH (Color Super Vertical) type, FLS (Ferroelectric Liquid Crystal) type or PSA (Polymer Stabilized Alignment) type etc. According to the driving method of the component, it is divided into PM (passive matrix) type and AM ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K19/46C09K19/44G02F1/1333
CPCC09K19/46C09K19/44G02F1/1333C09K2019/0448C09K19/42G02F1/13C09K19/12
Inventor 马文阳徐海彬韩文明
Owner JIANGSU HECHENG DISPLAY TECH CO LTD
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