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Liquid crystal composition containing benzothiophene polymerizable compound, and applications thereof

A technology of liquid crystal composition and polymer compound, which is applied in the fields of organic chemistry, liquid crystal materials, chemical instruments and methods, etc., can solve the problems of quality degradation of liquid crystal displays, contamination of the surface layer of the panel, long time, etc., and achieves the promotion of stable alignment and fast response speed. Effect

Inactive Publication Date: 2020-03-27
BEIJING BAYI SPACE LCD MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The presence of polymerizable compounds in liquid crystals leads to a decrease in the voltage retention rate of liquid crystals. Therefore, in the production process of liquid crystal displays, it is necessary to add a process to fully react the remaining polymerizable compounds. In order to ensure full reaction, the time is usually longer, resulting in protracted process time. On the other hand, due to the need to wait after the completion of the previous process, the glass substrate needs to be exposed to the environment for a period of time, and the pollution sources in the environment will contaminate the surface of the panel, resulting in a decline in the quality of the LCD

Method used

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  • Liquid crystal composition containing benzothiophene polymerizable compound, and applications thereof
  • Liquid crystal composition containing benzothiophene polymerizable compound, and applications thereof
  • Liquid crystal composition containing benzothiophene polymerizable compound, and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0349] Table 2: Weight percent and performance parameters of each component in the liquid crystal composition

[0350]

[0351] To the above-mentioned nematic liquid crystal composition, add 0.3% by mass percentage of the polymerizable compound with the following structure:

[0352]

[0353] Fill the prepared PSVA mixture into a standard VA test box, and use UV (313nm, 4mw / cm 2 ) was irradiated with a voltage of 10V for 40s, then the voltage was removed, and UV (365nm, 5mw / cm 2 ) light irradiation for 60min, fully reacting the residual polymerizable compound completely, and the pretilt angle of the test liquid crystal in the test box is 88.3°.

Embodiment 2

[0355] Table 3: Weight percent and performance parameters of each component in the liquid crystal composition

[0356]

[0357] To the above-mentioned nematic liquid crystal composition, add 0.3% by mass percentage of the polymerizable compound with the following structure:

[0358]

[0359] Fill the prepared PSVA mixture into a standard VA test box, and use UV (313nm, 4mw / cm 2 ) was irradiated with a voltage of 10V for 40s, then the voltage was removed, and UV (365nm, 5mw / cm 2 ) light irradiation for 60min, the residual polymerizable compound is fully reacted, and the pretilt angle of the test liquid crystal in the test box is 88.5 °.

Embodiment 3

[0361] Table 4: Weight percent and performance parameters of each component in the liquid crystal composition

[0362]

[0363] To the above-mentioned nematic liquid crystal composition, add 0.3% by mass percentage of the polymerizable compound with the following structure:

[0364]

[0365] Fill the prepared PSVA mixture into a standard VA test box, and use UV (313nm, 4mw / cm 2 ) was irradiated with a voltage of 10V for 40s, then the voltage was removed, and UV (365nm, 5mw / cm 2 ) light irradiation for 60min, the residual polymerizable compound is fully reacted, and the pretilt angle of the test liquid crystal in the test box is 88.1°.

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Abstract

The invention relates to the field of liquid crystal materials, specifically to a liquid crystal composition containing a benzothiophene polymerizable compound, and applications thereof. The liquid crystal composition comprises one or a plurality of polymerizable compounds represented by a general formula I, and further comprises a liquid crystal basic system, wherein the using amount of the polymerizable compound represented by the general formula I accounts for 0.1-5% of the total mass of the liquid crystal basic system. According to the invention, the liquid crystal composition has the advantages that the reaction speed is high, the polymerization time of the polymerizable compound can be shortened, the time required by the polymerization process of the liquid crystal display device isgreatly shortened, the yield of the liquid crystal display device is improved, the exposure time of the liquid crystal display device in the environment is shortened, and the quality performance of the liquid crystal display device is improved, so that the liquid crystal composition provided by the invention is suitable for PSVA and SAVA display mode liquid crystal display devices, and is especially suitable for PSVA liquid crystal display devices.

Description

technical field [0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition containing a benzothiophene polymerizable compound and an application thereof. Background technique [0002] Negative liquid crystal was first proposed in the late 1980s. It is mainly used in VA mode. VA display mode has excellent contrast performance, but there are obvious problems with viewing angle and response time. In order to solve the problem of viewing angle, MVA, PVA, CPA And other display technologies, the essence of these technologies is to use multi-domain to solve the viewing angle problem, and achieved good results. However, due to the increased difficulty of the process and the problem of response time, the display industry still plagued the display industry until the PSVA (Polymer Stabilized Vertical Alignment) technology was proposed, which uses polymers to achieve multi-domain and pre-tilt angle control to achieve fast respons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44C07D333/64C07D333/56
CPCC07D333/56C07D333/64C09K19/44
Inventor 张嫣然董焕章储士红陈卯先田会强未欣姜天孟陈海光
Owner BEIJING BAYI SPACE LCD MATERIALS TECH
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