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Liquid crystal display element, liquid crystal composition, and compound

A technology for liquid crystal display elements and liquid crystal compositions, which are applied in the directions of liquid crystal materials, organic chemistry, chemical instruments and methods, etc., to achieve the effects of excellent transmittance characteristics or contrast, and reduction of manufacturing costs

Inactive Publication Date: 2019-09-06
JNC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is no suggestion or description that (meth)acrylate compounds having a stilbene skeleton induce horizontal alignment of liquid crystal compounds by irradiation with polarized light.

Method used

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  • Liquid crystal display element, liquid crystal composition, and compound
  • Liquid crystal display element, liquid crystal composition, and compound
  • Liquid crystal display element, liquid crystal composition, and compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0369] The alignment monomer (A-1-1) was added to the composition (M1) in a ratio of 0.3 parts by weight. The mixture was injected into an IPS element having no alignment film at 90° C. (above the upper limit temperature). While heating the IPS element at 90°C (above the upper limit temperature), the element is irradiated with linearly polarized ultraviolet rays (313nm, 5.0J / cm2) from the normal direction. 2 ), so as to obtain an element formed with an orientation control layer. The irradiated ultraviolet light becomes linearly polarized light by passing through the polarizer. Next, the device in which the orientation control layer was formed was placed on a polarizing microscope, and the orientation state of the liquid crystal was observed. The polarizer and the analyzer of the polarizing microscope are arranged such that their respective transmission axes are perpendicular to each other. First, the orientation direction of the liquid crystal molecules is parallel to the t...

Embodiment 2 to Embodiment 9

[0371] Compound (A-1-1) or compound (B-1-1) is added to composition (M2) to composition (M9). Except using the mixture and setting the injection temperature of liquid crystal and the temperature of polarized light exposure to the temperatures described in Table 4, a device was produced by the same method as in Example 1, and the same method as in Example 1 was used. Check for light leaks.

Embodiment 10

[0373] Compound (C-1-1) was added to composition (M10) in a ratio of 1 part by weight. The mixture was injected into an IPS element having no alignment film at 95° C. (above the upper limit temperature). Irradiate the element with linearly polarized light (313nm, 2.0J / cm2) from the normal direction at 100°C (above the upper limit temperature) 2 ). The presence or absence of light leakage was observed by the same method as in Example 1.

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Abstract

The present invention addresses the problem of controlling the alignment of liquid crystal molecules of a liquid crystal display element not having an alignment film by using a non-colored alignable monomer, and of providing a liquid crystal composition in which the non-colored alignable monomer has good compatibility. The present invention uses a liquid crystal display element and a liquid crystal composition, the liquid crystal display element using a liquid crystal composition containing an alignment-control-layer-forming monomer having a vinylene group in a partial structure thereof and having a negative dielectric anisotropy.

Description

technical field [0001] The invention relates to a liquid crystal display element containing a liquid crystal composition with negative dielectric anisotropy, a liquid crystal composition and a compound. In particular, it relates to a liquid crystal display device utilizing a liquid crystal composition containing an alignment monomer having a vinylene group in a partial structure, and the liquid crystal molecule can be formed by the action of the compound. orientation. Background technique [0002] In liquid crystal display elements, the classification based on the operation mode of liquid crystal molecules is phase change (phase change, PC), twisted nematic (twisted nematic, TN), super twisted nematic (super twisted nematic, STN), electronically controlled birefringence ( Electrically controlled birefringence (ECB), optically compensated bend (OCB), in-plane switching (IPS), vertical alignment (vertical alignment, VA), fringe field switching (FFS), electric field sensing F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337C07C69/54C09K19/12C09K19/30C09K19/32C09K19/34C09K19/38C09K19/54G02F1/13
CPCC07C69/54C09K19/12C09K19/30C09K19/32C09K19/34C09K19/38C09K19/54G02F1/13G02F1/1337
Inventor 平井吉治近藤史尚荻田和寛
Owner JNC CORP
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