Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Liquid crystal aligning agent, liquid crystal aligning film and liquid crystal display element

A liquid crystal alignment film and liquid crystal alignment technology, which is applied in instruments, optics, nonlinear optics, etc., can solve problems such as liquid crystal alignment film display defects, liquid crystal display element display defects, etc., and achieve excellent resistance, low surface roughness, and thermal stability. Effect of Deterioration Suppression

Active Publication Date: 2020-09-25
NISSAN CHEM IND LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The peeled liquid crystal alignment film becomes a foreign matter, and the display defect of the liquid crystal display element is easy to occur
In addition, when the liquid crystal display element is used in a smart phone or a tablet terminal, since a physical impact such as finger pressing is applied to the liquid crystal display element, the peeling of the liquid crystal alignment film and the generation of foreign matter are the same as the above. problematic

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid crystal aligning agent, liquid crystal aligning film and liquid crystal display element
  • Liquid crystal aligning agent, liquid crystal aligning film and liquid crystal display element
  • Liquid crystal aligning agent, liquid crystal aligning film and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0186] The preparation method of the liquid-crystal aligning agent of this invention is not specifically limited. For example, the following methods are mentioned: a method of mixing component (A) at a specific ratio in a solution of component (B) dissolved in a solvent to prepare a homogeneous solution; or, in an appropriate stage of the production method, as needed A method of further adding and mixing the above-mentioned crosslinkable compound, a compound for improving the film thickness uniformity and surface smoothness of the resin film or liquid crystal aligning film, a compound for accelerating decharge, a dielectric substance, and a conductive substance.

[0187] In preparation of the liquid-crystal aligning agent of this invention, the solution of the polymer which is (B) component obtained by the polymerization reaction in a solvent can be used as it is. In this case, for example, (A) component etc. are injected|thrown-in to the solution of (B) component similarly to...

Embodiment

[0206] Hereinafter, although an Example is given and this invention is demonstrated in more detail, it is not limited to these.

[0207] It should be noted, 1 The measurement apparatus and measurement conditions of H-NMR are as follows.

[0208] Device: Fourier transform superconducting nuclear magnetic resonance device (FT-NMR) INOVA-400 (manufactured by Varian Corporation) 400MHz

[0209] Solvent: deuterated chloroform (CDCl 3 )

[0210] Standard substance: Tetramethylsilane (TMS)

[0211] Cumulative times: 8

Synthetic example 1X-1

[0212] [Synthesis Example 1] Synthesis of X-1

[0213]

[0214] Put 73.2 g of dichloromethane, 4.00 g (13.8 mmol) of N,N'-bis(tert-butoxycarbonyl)-S-methylisothiourea, and 1.77 g of benzylamine into a 200 mL four-neck flask equipped with a magnetic stirrer (1.2eq) and triethylamine (Et 3 N) 2.83g (2.0eq), after nitrogen substitution, N-iodosuccinimide (NIS) 3.10g (1.0eq) was added, and it stirred at room temperature. After 3 hours, add benzylamine 2.22g (1.5eq), N-iodosuccinimide (NIS) 1.54g (1.0eq) and triethylamine (Et 3 N) 1.39g (1.0eq), further reacted for 40 hours. After the reaction, the dichloromethane layer was washed twice with 1.0M aqueous sodium thiosulfate (50 ml) and twice with 0.5M aqueous hydrochloric acid (50 ml). Thereafter, water washing was performed twice with pure water (100 ml), and the dichloromethane layer was recovered. Yellow crystals were recovered by concentrating the recovered dichloromethane layer under reduced pressure, and dissolved in 28...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

To provide a liquid crystal aligning film and a liquid crystal aligning agent capable of suppressing film peeling and foreign matter accompanying physical impact, improving the transmittance characteristics of an element, and having excellent afterimage characteristics caused by AC driving. A liquid-crystal aligning agent containing following (A)component, (B)component, and the solvent for dissolving them. (A) Component: a compound represented by formula (1) (P has at least one group that is substituted with at least two or more nitrogen atoms on the same carbon atom, and at least one of the nitrogen atoms is substituted There is a monovalent thermally detachable group with 1 to 24 carbon atoms that is replaced by a hydrogen atom due to heat; X represents a single bond, etc.; Q represents a benzene ring, etc.), (B) component: selected from polyimide At least one polymer selected from the group consisting of a precursor and a polyimide. P‑X‑Q (1).

Description

technical field [0001] The present invention relates to a liquid crystal aligning agent used in a liquid crystal display element driven by applying a parallel electric field to a substrate, a liquid crystal aligning film, and a liquid crystal display element using the same. Background technique [0002] Polyimide is a polymer material with excellent heat resistance, mechanical strength, electrical properties, and solvent resistance. It is widely used in the field of electronic materials in the form of polyimide films such as insulating films, protective films, and liquid crystal alignment films. . When attempting to obtain these polyimide films industrially, a common method is to prepare a coating liquid in which polyimide or a polyimide precursor is dissolved in a solvent, apply it, and bake it. [0003] As a polyimide precursor, polyamic acid, polyamic acid ester, etc. can be used. They have higher solubility in solvents than polyimides, so in the case of the method of o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337C08K5/29C08K5/3445C08L79/08
CPCC08K5/29C08K5/3445C08L79/08G02F1/1337
Inventor 堀隆夫藤枝司
Owner NISSAN CHEM IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com