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Alignment film material and preparation method, alignment film and preparation method

An alignment film and host material technology, applied in the field of liquid crystal display devices, can solve the problem that the pretilt angle controllability cannot be realized in a large range, and achieve the effect of high pretilt angle and improved thermal performance.

Inactive Publication Date: 2018-07-13
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned process changes can only achieve a slight change in the pre-tilt angle, and cannot realize the controllability of the pre-tilt angle in a large range.

Method used

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  • Alignment film material and preparation method, alignment film and preparation method
  • Alignment film material and preparation method, alignment film and preparation method
  • Alignment film material and preparation method, alignment film and preparation method

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preparation example Construction

[0046] As another aspect of the present invention, the preparation method of described alignment film material is provided, and this preparation method comprises the following steps:

[0047] dissolving carborane cage modified organic compound nanoparticles in an organic solvent;

[0048] mixing the solution of the carborane cage modified organic nanoparticles with the precursor solvent of the main material of the alignment film to obtain a mixture;

[0049] The obtained mixture is mixed with the alignment film host material to obtain the alignment film material.

[0050] As another aspect of the present invention, an alignment film is provided, wherein the alignment film is obtained by curing the above-mentioned alignment film material provided by the present invention, and in the chemical structure of the alignment film, the carborane cage modification The groups R and / or R' in the molecular structure of the organic compound nanoparticles are combined on the molecular chain...

Embodiment 1

[0068] First, prepare the alignment film material according to the following steps:

[0069] S1, dissolving 5 grams of carborane cage-shaped modified organic compound nanoparticles in 95 grams of NMP to form a 5%wt carborane cage-shaped modified organic compound nanoparticle solution, carborane cage-shaped modified organic compound nanoparticles The molecular structure of the particle is C2B10H12RR', where R and R' are -(CH2)n-CO-;

[0070] S2. Mix 100 grams of the solvent of the carborane cage modified organic nanoparticles with 100 grams of the precursor solvent of the main material of the oriented film to obtain a mixture. The precursor solvent can have the following components:

[0071] p-dihexylcyanopyromellitic anhydride and p-diaminobiphenyl NMP solution with a mass content of 7%, wherein the molar ratio of p-dihexycyanopyromellitic anhydride to p-diamine is 1:1.05;

[0072] S3. Mix 200 grams of the mixture obtained in step S2 with 100 grams of the alignment film main ...

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Abstract

The invention provides an alignment film material, which comprises a film body material and carborane cage modified organic compound nanoparticles mixed in the film body material, and the film body material is acrylic resin or polyimide Amine resin, the molecular formula of the carborane cage modified organic compound nanoparticles is C2B10H12RR', R and R' are independently selected from -O-Si(CH2)m, -(CH2)n-CO- and C6H4 One of ‑O‑, m is a natural number, n is a natural number. The invention also provides a preparation method of an alignment film material, an alignment film and a preparation method thereof. In the alignment film prepared by using the copolymer prepared from the alignment film material, the group R and / or R' in the molecular structure of the carborane cage modified organic compound nanoparticle is combined with the film host material On the molecular chain, the thermal properties, mechanical properties and oxidation resistance of the alignment film can be improved.

Description

technical field [0001] The present invention relates to the field of liquid crystal display devices, in particular to an alignment film material for preparing an alignment film, a preparation method of the alignment film material, an alignment film made from the alignment film material, and a preparation method of the alignment film . Background technique [0002] In the production process of thin-film liquid crystal displays, after the alignment film material is rubbed with rubbing cloth or UV light alignment treatment, the alignment anchoring of the liquid crystal molecules is realized, and at the same time, the liquid crystal molecules and the alignment film material also form a certain angle (that is, the predetermined inclination). The pretilt angle of the liquid crystal molecules has an important effect on the optoelectronic properties such as driving voltage, response time, chromaticity and viewing angle. However, in the current manufacturing process of thin film li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/00C08L79/08C08K9/04C08K5/55
Inventor 李建李鸿鹏宋省勳陈旭
Owner BOE TECH GRP CO LTD
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