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Chiral binaphthyl compounds

A compound and chiral technology, applied in the field of chiral bis-naphthyl optically active compounds, can solve the problems of decreased brightness, residual image, hindering gray-scale display, etc., and achieve the effect of small liquid crystal, reduced image retention, and low cost.

Inactive Publication Date: 2012-07-11
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the voltage retention rate is low, the voltage applied to the liquid crystal during the frame time will drop, resulting in a decrease in brightness and even hindering normal grayscale display
On the other hand, if the residual DC current is large, so-called "image sticking" sometimes occurs, that is, the image that should disappear after the voltage is applied regardless of whether the power is turned off or not

Method used

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Embodiment Construction

[0019] The invention relates to a chiral bis-naphthyl optically active compound, which has good solubility and relatively high helical twisting force (HTP). This series of optically active compounds is suitable for liquid crystal formulations of various displays. After blending with liquid crystals in different proportions as liquid crystal dopants, the liquid crystal panel has a high voltage retention ratio (VHR), which can help reduce image retention and improve screen contrast.

[0020] The optical properties of liquid crystal molecules can be improved or modified by doping dopant. The chiral bis-naphthyl optically active compound of the present invention can be used as a dopant of a liquid crystal composition.

[0021] The so-called "liquid crystal" in the present invention includes liquid crystals used in various common liquid crystal panels or liquid crystal screens, including nematic liquid crystals or cholesteric liquid crystals. The replacement and adjustment of the ...

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Abstract

The present invention relates to chiral binaphthyl compounds having a structure of chemical formula (I) and having good solubility and high helical twisting power. The chiral binaphthyl compounds as dopants in the liquid crystal compositions can help enhance the display quality of the liquid crystal panels.

Description

technical field [0001] The present invention relates to an optically active compound, and in particular relates to a chiral bis-naphthyl optically active compound applied to liquid crystals. Background technique [0002] There are many types of liquid crystal displays widely used in the industry today. According to the different liquid crystal molecules contained in them and the imaging principles, they can be roughly divided into nematic liquid crystal display elements, twisted nematic liquid crystal display elements twisted 90 degrees (Twisted Nematic, TN) liquid crystal display elements, super twisted nematic (Super Twisted Nematic; STN) liquid crystal display elements twisted 180 degrees or more, surface-stabilized cholesteric texture (Surface-Stabilized Cholesteric Texture; SSCT) liquid crystal display elements, polymerization Polymer-stabilized cholesteric texture (PSCT) type liquid crystal panel or thin film transistor (TFT) type liquid crystal display element. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/007C07C69/78C07D213/79C07D239/28C07D309/08C07D335/02C07C69/96C07C271/28C07C251/16C07C233/81C09K19/58
CPCC07D401/12C09K19/322C07C69/76C09K19/3491C09K2019/323C07C2101/14C09K19/3444C07C271/28C09K2019/3422C07D407/12C09K19/3463C07C2601/14
Inventor 林建文吴峻鸣刘仕贤郑功龙
Owner IND TECH RES INST
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