Liquid crystal composition containing polymerizable compound and liquid crystal display element manufactured using the same

一种聚合性化合物、液晶组合物的技术，应用在液晶材料、非线性光学、化学仪器和方法等方向，能够解决难以满足快速响应特性图像残留特性、取向稳定性稳定性PSA型液晶显示元件制造效率、液晶化合物相溶性低等问题，达到显示不良减轻、不良影响减少、提高成品率的效果

Active Publication Date: 2012-11-21
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since these polymerizable compounds have low compatibility with liquid crystal compounds, there is a problem that precipitation of the polymerizable compounds occurs during the preparation of the liquid crystal composition.
[0009] As described above, it is difficult to satisfy the quick response characteristics required for liquid crystal compositions containing polymerizable compounds, the image retention characteristics of display elements, orientation stability, stability as a composition that does not cause precipitation, and the production of PSA-type liquid crystal display elements. The manufacturing efficiency and other characteristics need to be further improved

Method used

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  • Liquid crystal composition containing polymerizable compound and liquid crystal display element manufactured using the same
  • Liquid crystal composition containing polymerizable compound and liquid crystal display element manufactured using the same
  • Liquid crystal composition containing polymerizable compound and liquid crystal display element manufactured using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0088] Preparation of a liquid crystal composition LC-1 containing a compound selected from the general formula (II) and a compound selected from the general formula (III),

[0089]

[0090] In 99.7% LC-1, add 0.3% formula (I-1-1)

[0091] Formula (I-1-1)

[0092] The polymeric compound shown was prepared to prepare the liquid crystal composition CLC-1 containing the polymeric compound. Next, the prepared polymerizable compound-containing liquid crystal composition CLC-1 and its physical property values ​​are shown.

[0093] The liquid crystal composition CLC-1 containing the polymerizable compound is, T ni : 74.1°C, Δn: 0.101, Δε: -3.0.

[0094] Using a vacuum injection method, CLC-1 was injected into an ITO-attached cell having a cell gap of 3.5 μm and coated with a polyimide alignment film for inducing homeotropic alignment. After measuring the pretilt angle of the cell (crystal rotation method), while applying a 1.8V rectangular wave at a frequency of 1kHz, the li...

Embodiment 2）

[0113] Preparation of a liquid crystal composition LC-2 containing a compound selected from the general formula (II) and a compound selected from the general formula (III),

[0114]

[0115] In 99.7% LC-2, add 0.3% formula (I-6-1)

[0116] Formula (I-6-1)

[0117] With the polymeric compound shown, the liquid crystal composition CLC-2 containing a polymeric compound was prepared.

[0118] The physical property value of the liquid crystal composition CLC-2 containing a polymerizable compound is T ni : 77.0°C, Δn: 0.103, Δε: -3.2.

[0119] Except having used CLC-2, it carried out similarly to Example 1, and obtained the vertical alignment liquid crystal display element. The response speed of this liquid crystal display element is 4.7 milliseconds.

[0120] The content of the unpolymerized polymerizable compound represented by the formula (I-6-1) contained in the device was analyzed by liquid chromatography, but it was not detected. From this, it was confirmed that the po...

Embodiment 3）

[0122] preparing a liquid crystal composition LC-3 containing a compound selected from the general formula (II) and a compound selected from the general formula (III),

[0123]

[0124] In 99.7% LC-3, add 0.3% formula (I-13-1)

[0125]

[0126] The polymeric compound shown was prepared to prepare the liquid crystal composition CLC-3 containing the polymeric compound.

[0127] The physical property value of the liquid crystal composition CLC-3 containing a polymeric compound is T ni : 76.4°C, Δn: 0.090, Δε: -2.9.

[0128] Except having used CLC-3, it carried out similarly to Example 1, and obtained the vertical alignment liquid crystal display element. The response speed of this liquid crystal display element was 5.0 milliseconds.

[0129] The content of the unpolymerized polymerizable compound represented by the formula (I-13-1) contained in the element was analyzed by liquid chromatography analysis, but it was not detected. From this, it was confirmed that the polym...

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Abstract

The present invention relates to a liquid crystal composition containing a polymerizable compound and a liquid crystal display element manufactured using the liquid crystal composition. Accordingly, it is an object of the present invention to provide a liquid crystal composition containing a polymerizable compound that can provide high-speed responsivity, is not precipitated in a wide temperature range, can be polymerized at high speed, can control liquid crystal orientation after polymerization, and causes no display defect. It is another object of the present invention to provide a liquid crystal display element having excellent display quality without variations in display characteristics using the liquid crystal composition containing a polymerizable compound. A liquid crystal composition containing a polymerizable compound contains one or two or more polymerizable compounds having the general formula (I) as a first component and one or two or more non-polymerizable liquid crystal compounds having an alkenyl group as a second component. A liquid crystal display element is manufactured using the liquid crystal composition.

Description

technical field [0001] The present invention relates to a liquid crystal composition containing a polymerizable compound and a liquid crystal display device using the same. Background technique [0002] The PSA (Polymer Sustained Alignment) type liquid crystal display device is a device that has a polymer structure formed in the cell in order to control the pretilt angle of the liquid crystal molecules. Due to its high-speed response, high Contrast, so it was developed as a liquid crystal display element. [0003] The manufacture of the PSA type liquid crystal display element is carried out by injecting a polymerizable composition composed of a liquid crystal compound and a polymerizable compound between the substrates, applying a voltage, and polymerizing the polymerizable compound in a state where the liquid crystal molecules are aligned to fix the liquid crystal. molecular orientation. Causes of image sticking, which is a display defect of the PSA-type liquid crystal di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/56G02F1/1333
CPCC09K2019/3009C09K2019/122G02F1/133788G02F2001/133726C09K2019/123C09K2019/0448C09K19/12G02F1/133703C09K2019/3036G02F1/133726C09K2323/00
Inventor 栗山毅栗泽和树川上正太郎
Owner DIC CORP
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