Liquid crystal reactive monomer and liquid crystal panel

An active monomer, liquid crystal panel technology, used in liquid crystal materials, nonlinear optics, instruments, etc., can solve problems such as shortening curing time and image retention, and achieve the effects of shortening curing time, improving solubility, and increasing curing speed.

Active Publication Date: 2013-12-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The first object of the present invention is to provide a liquid crystal reactive monomer (Reactive Monomer, RM), which can simultaneously improve the positioning force and polymerization ability of liquid crystal molecules, so as to solve the problem of image sticking and shorten the curing time. Good solubility of liquid crystal matrix

Method used

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  • Liquid crystal reactive monomer and liquid crystal panel
  • Liquid crystal reactive monomer and liquid crystal panel
  • Liquid crystal reactive monomer and liquid crystal panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Please see attached figure 1 , with figure 1 Shown is the liquid crystal panel of the present invention, and described liquid crystal panel comprises:

[0036] A first transparent substrate 101 with a first alignment film 201; a second transparent substrate 102 with a second alignment film 202; and a liquid crystal composition filled between the first transparent substrate 101 and the second transparent substrate 102 between, and the liquid crystal composition is in contact with the first and second alignment films, wherein the liquid crystal composition includes liquid crystal molecules 301 and at least one liquid crystal active monomer 302, the general formula of the liquid crystal active monomer 302 is Ⅲ, Ⅳ or Ⅴ said.

[0037]

[0038] X is selected from H or F;

[0039] p or q is the number of X groups, p or q are respectively selected from integers greater than or equal to 0 (such as 0, 1, 2...), and p+q≥1;

[0040] w or z are respectively selected from inte...

Embodiment 2

[0047] This embodiment provides a liquid crystal active monomer whose structural formula is The preparation path is:

[0048]

[0049] Concrete preparation steps are:

[0050] (A) Preparation of intermediate (1)

[0051] Dissolve 10 mmol 2,6-dihydroxyanthraquinone (2,6-Dihydroxyanthraquinone) in 150 mL of 2.0N Na 2 CO 3 solution, slowly add 127mmolNaBH 4 added to the reaction. The reaction was stirred at room temperature for 3 hours, and after gas evolution ceased, the reaction was heated to reflux for 10 minutes. After cooling, concentrated HCl was slowly added dropwise to acidify the reaction. The precipitate was collected by filtration and dissolved with acetone (acetone), and the solution was MgSO 4 Remove water and filter with air, then concentrate and vacuum to obtain a reddish-brown solid, which is finally purified by silica gel column chromatography with EA / Hexane=1 / 1, and recrystallized with ethanol to obtain light reddish-brown crystals ;

[0052] (B) ...

Embodiment 3

[0055] This embodiment provides a liquid crystal active monomer whose structural formula is The preparation path is:

[0056]

[0057] The specific steps of preparation are:

[0058] (A) Preparation of intermediate (3)

[0059] 10 mmol of intermediate (1) was dissolved in 150 mL of 2.0N KOH / THF solution, and 5 mmol of 2-bromoethanol (2-bromoethanol) was slowly added to the reaction. The reaction was heated to reflux for 24 hours. After cooling, concentrated HCl was slowly added dropwise to acidify the reaction. Extracted with EA and water, with MgSO 4 Water was removed and filtered with air, then concentrated and vacuumed to obtain a yellow liquid, which was finally purified by silica gel column chromatography with EA / Hexane=1 / 1, and recrystallized with ethanol to obtain a light yellow liquid.

[0060] (B) Preparation of target product

[0061] Put 10mmol of intermediate (3) into a 250mL double-necked bottle, use a vacuum deoxygenation and water removal device to p...

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PUM

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Abstract

The present invention provides a liquid crystal reactive monomer used for the polyimide surface of an alignment film and a liquid crystal panel. The liquid crystal reactive monomer has a hard core, and is contained in a liquid crystal composition. The general formula of the liquid crystal reactive monomer is represented by formula I or II, and the molecular weight of the liquid crystal reactive monomer is greater than or equal to 300. The liquid crystal reactive monomer has substantially improved the solubility of liquid crystal matrix and the return force of liquid crystal molecules, and has solved the image sticking problem; it has improved the polymerization capabilities of the liquid crystal molecules and the curing speed of the polymerization curing reaction between the liquid crystal reactive monomer and the polyimide surface, and has shortened the curing time, thereby achieving the purposes of saving energy and reducing carbon.

Description

technical field [0001] The invention relates to a liquid crystal active monomer and a liquid crystal panel, in particular to a liquid crystal active monomer used on the polyimide surface of an alignment film and a liquid crystal panel with the liquid crystal active monomer. Background technique [0002] In recent years, liquid crystal displays are inseparable from daily life. The main requirements for liquid crystal displays are: wide viewing angle, high contrast, fast picture switching, low power consumption and picture stability; and one of the problems to be improved in picture stabilization is image retention ( Image Sticking). [0003] Adding a liquid crystal reactive monomer (Reactive Monomer, RM) can increase the placement force of liquid crystal molecules, thereby improving the image sticking problem, and then it can be used as a liquid crystal display (LCD Display Device). However, the current liquid crystal reactive monomers and liquid crystal matrix have low solu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/18C07C15/28C07C15/30C09K19/56G02F1/1337
CPCG02F1/1337C09K2019/122C09K2019/123C09K19/56C09K2019/0448C09K19/32
Inventor 谢忠憬
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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