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 poor light and thermal stability and can not meet the requirements, achieve good image retention, solve image retention, good The effect of low temperature miscibility

Active Publication Date: 2019-10-11
JIANGSU HECHENG DISPLAY TECHCO
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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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  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device
  • Liquid crystal composition and liquid crystal display device

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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 invention provides a liquid crystal composition and a liquid crystal display device. The liquid crystal composition is composed of at least one compound shown as the formula I, at least one compound shown as the formula II and at least one compound shown as the formula III, and through the cooperation of the three compounds, can achieve higher optical anisotropy and dielectric anisotropy, goodlow-temperature intersolubility, excellent electric resistivity and voltage retention rate under ultraviolet irradiation, thereby well solving the problem of image retention. Meanwhile, in the liquidcrystal composition, the polymerizable compounds can be more uniform and less prone to form large polymerized particles during polymerization and accordingly can avoid affecting display effects in the panel of the liquid crystal display device due to formation of light spots.

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 Applications(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 TECHCO
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