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Compound, liquid crystal composition, and liquid crystal display device

A technology for liquid crystal compositions and compounds, applied in the directions of liquid crystal materials, chemical instruments and methods, instruments, etc., to achieve the effects of fast conversion, good ultraviolet resistance and good diffusivity

Pending Publication Date: 2020-10-09
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the application of liquid crystal compounds in PSA mode displays after mixing with RM still has some disadvantages

Method used

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  • Compound, liquid crystal composition, and liquid crystal display device
  • Compound, liquid crystal composition, and liquid crystal display device
  • Compound, liquid crystal composition, and liquid crystal display device

Examples

Experimental program
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Effect test

preparation example Construction

[0124] The preparation method of the liquid crystal composition is as follows: put each liquid crystal monomer into a stainless steel beaker after weighing according to a certain proportion, place the stainless steel beaker containing each liquid crystal monomer on a magnetic stirring apparatus to heat and melt, and wait for the liquid crystal monomer in the stainless steel beaker to melt. After most of the liquid crystal monomers are melted, a magnetic rotor is added to the stainless steel beaker, the mixture is stirred evenly, and the liquid crystal composition is obtained after cooling to room temperature.

[0125] The preparation method of the liquid crystal display device is as follows: First, uniformly coat the alignment material on the surface of the first substrate and the second substrate, the alignment material can be polyimide, heat and cure the evenly coated alignment material, and the heating temperature is 230°C , to form an alignment layer; secondly, spacers are ...

Embodiment 1

[0151] The structural formula of the compound is shown in the following formula Ⅰ-1-1:

[0152]

[0153] Its preparation route is as follows:

[0154]

[0155] The specific operation process of preparation:

[0156] The first step: the preparation of intermediate 3

[0157] Put 0.1 mol of compound 1, 0.1 mol of compound 2, 0.1 mol of dicyclohexylcarbodiimide (hereinafter referred to as "DCC"), and 0.5 L of tetrahydrofuran into a 1 L three-necked flask, and react at room temperature for 2 hours under nitrogen protection. The solid was suctioned, the organic phase was washed with 0.2 L of water, the organic phase was passed through a 50 g silica gel column, washed with 0.1 L of toluene, and spin-dried to obtain intermediate 3.

[0158] Step 2: Compound I-1-1

[0159] 0.02 mol of the aforementioned intermediate 3, 0.02 mol of cyclopentenecarboxylic acid, 0.5 L of tetrahydrofuran, and 0.02 mol of DCC were put into a 1 L three-necked flask, and reacted for 3 hours at room ...

Embodiment 2

[0161] The structural formula of the compound is shown in the following formula Ⅰ-1-2:

[0162]

[0163] Its preparation route is as follows:

[0164]

[0165] The specific operation process of preparation:

[0166] The first step: the preparation of intermediate 6

[0167] Put 0.1 mol of compound 5, 0.1 mol of compound 2, 0.1 mol of dicyclohexylcarbodiimide (hereinafter referred to as "DCC"), and 0.5 L of tetrahydrofuran into a 1 L three-necked flask, and react at room temperature for 2 hours under nitrogen protection. The solid was suctioned, and the organic phase was washed with 0.2 L of water. The organic phase was passed through a 50 g silica gel column, washed with 0.1 L of toluene, and spin-dried to obtain intermediate 6.

[0168] The second step: the preparation of compound I-1-2

[0169] 0.02 mol of the aforementioned intermediate 6, 0.02 mol of cyclopentenecarboxylic acid, 0.5 L of tetrahydrofuran, and 0.02 mol of DCC were put into a 1 L three-necked flask, ...

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Abstract

The invention discloses a compound, a liquid crystal composition and a liquid crystal display device. The structural formula of the compound is shown as a formula I. The liquid crystal composition comprises one or more compounds shown as the formula I, one or more compounds shown as the formula II and one or more compounds shown as the formula III. The liquid crystal display component comprises the liquid crystal composition. The liquid crystal composition provided by the invention has high diffusivity, shortens the first-stage light irradiation time from 75-100s to 50-65s, reduces residual images caused by uneven diffusion, has high conversion rate, and can realize quick response; the liquid crystal display component has the characteristics of wider nematic phase temperature range, properor higher birefringence anisotropy delta n, high RM conversion rate and less residue, can effectively avoid the residual image problem, can shorten the preparation process, and improves the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and more specifically relates to a compound used in a liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display component containing the compound or the liquid crystal composition. Background technique [0002] With the development of display technology, liquid crystal display devices (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, TVs, Various consumer electronic products such as personal digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Reactive Mesogen (RM) is currently a very popular and important research direction in the liquid crystal display industry. Its possible application fields include polymer stabilized alignment (PSA) liquid crystal display, polymer stabilized blue phase (PS-BP) liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/74C09K19/30C09K19/46G02F1/13
CPCC07C69/74C09K19/3098C09K19/46G02F1/13
Inventor 王一平孙新战周志华鲍永锋邢杰浩姜军魏天宇
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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