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Liquid crystal composition, display element and compound

A technology of liquid crystal composition and display elements, which is applied in the direction of liquid crystal materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of non-existing report examples, and achieve the effect of small changes

Pending Publication Date: 2021-04-30
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no reported examples of liquid crystal compositions having reverse dispersion properties that satisfy various physical properties required for display products, and development of such liquid crystal compositions has been demanded.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0372] (Example 1) Production of compound represented by formula (I-1)

[0373] [Chemical 84]

[0374]

Embodiment 1-1

[0376] [Chemical 85]

[0377]

[0378] 2.5 g of the compound represented by formula (I-1-1) was dissolved in 35 mL of dichloromethane, and 2.3 g of boron tribromide was slowly added thereto at room temperature. After stirring at room temperature for 2 hours, 30 mL of water was added and stirred for a while. The organic layer was extracted by liquid separation, washed with saturated brine, and then dried by adding anhydrous sodium sulfate. The solvent was evaporated under reduced pressure to obtain 2.1 g of the compound represented by the formula (I-1-2).

[0379] MS(EI): m / z=271

Embodiment 1-2

[0381] [Chemical 86]

[0382]

[0383] 50 g of the compound represented by the formula (I-1-3) and 23 g of diazabicyclo[2.2.2]octane (DABCO) were dissolved in 300 mL of dichloromethane, and the mixture was cooled in an ice bath under nitrogen. A solution obtained by dissolving 23.6 g of methanesulfonic acid chloride in 50 mL of dichloromethane was slowly added dropwise thereto. After completion of the dropwise addition, the mixture was stirred at room temperature for 3 hours, and then 100 mL of water was added for liquid separation. The organic layer was washed several times with diluted hydrochloric acid, further washed with saturated aqueous sodium bicarbonate solution, and then washed with saturated brine. After adding anhydrous sodium sulfate to the organic layer and drying, the solvent was distilled off under reduced pressure, and 63 g of compounds represented by formula (I-1-4) were obtained.

[0384] MS(EI): m / z=316

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Abstract

The present invention addresses the problem of providing: a liquid crystal composition which is to be used in an active drive display element and improves chromatic dispersion properties; a display element which uses said liquid crystal composition; and a compound. Provided are: a liquid crystal composition which is to be used in an active drive display element and is characterized by containing one or more types of a compound (Z) having a group (ZG) which has a characteristic structure, exhibits large chromatic dispersion, and is positioned in a direction which is straight along the molecular long axis; and a display element which uses said liquid crystal composition. In addition, a compound represented by general formula (I) is provided as the compound (Z).

Description

technical field [0001] The present invention relates to a liquid crystal composition with improved wavelength dispersion, a display element using the liquid crystal composition, and a compound. Background technique [0002] The vertical alignment type liquid crystal display element is characterized by a high contrast ratio, and is widely used in products such as televisions. However, when the display element is observed from the front, and when the display element is observed from the oblique side, there is a problem that the color tone, chromaticity, and the like are changed. [0003] In a graph plotted with the wavelength λ of the incident light to the liquid crystal composition as the horizontal axis and the refractive index anisotropy (Δn) thereof as the vertical axis, as the wavelength (λ) is shorter, the refractive index anisotropy ( When the Δn) is larger, the liquid crystal composition can be said to be “positive wavelength dispersion” or “positive dispersion”. When...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/34C07D277/62C07D277/66C07D333/54C07D339/06C07D417/04C07D495/04C07D513/04C09K19/12C09K19/14C09K19/16C09K19/18C09K19/20C09K19/22C09K19/24C09K19/28C09K19/30C09K19/32C09K19/38C09K19/54G02F1/13
CPCC07D277/62C07D277/66C07D333/54C07D339/06C07D417/04C07D495/04C07D513/04C09K19/12C09K19/14C09K19/16C09K19/20C09K19/22C09K19/18C09K19/24C09K19/28C09K19/30C09K19/32C09K19/34C09K19/38C09K19/54G02F1/13
Inventor 井之上雄一堀口雅弘青木良夫立川丰
Owner DIC CORP
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