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

Liquid crystal sealant and liquid crystal display cell using same

A technology of liquid crystal sealant and liquid crystal dropping method, which is applied in the directions of instruments, optics, nonlinear optics, etc., can solve the problems of not achieving thermal reactivity or curing of light-shielding parts, poor storage stability, and difficulty in sealing and coating. , to achieve the effect of good operability, excellent adhesive strength and fast curing speed

Inactive Publication Date: 2017-02-15
NIPPON KAYAKU CO LTD
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that due to the property that sealing coating becomes difficult due to the increase in viscosity at room temperature, the storage stability of liquid crystal sealing agents using thermal radical generators is not good.
A method for solving this problem is proposed in Patent Document 7, but it is not sufficient as a method for solving all the above-mentioned problems.
[0010] As mentioned above, although the liquid crystal sealing agent used in the liquid crystal dropping method has been actively developed, it has not yet achieved good heat reactivity and light-shielding part curing properties, but also has good handleability and storage stability. Liquid crystal sealing compound with excellent cured properties

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 sealant and liquid crystal display cell using same
  • Liquid crystal sealant and liquid crystal display cell using same
  • Liquid crystal sealant and liquid crystal display cell using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0082] Hereinafter, the present invention will be described in more detail through synthesis examples and examples, but the present invention is not limited by the examples. In addition, unless otherwise specified, "parts" and "%" herein are mass standards.

Synthetic example 1

[0084] (Synthesis of 1-Hydroxy-2-trimethylsilyloxy-1,1,2,2-tetraphenylethane)

[0085] 100 parts (0.28 moles) of commercially available tetraphenylethylene glycol (Tokyo Chemical Industry) were dissolved in 350 parts of dimethylformamide (dimethylformaldehyde), and 32 parts (0.4 moles) of pyridine were added thereto as a basic catalyst, 150 parts (0.58 mol) of BSTFA (manufactured by Shin-Etsu Chemical Co., Ltd.) was used as a silylating agent, and it heated up to 70 degreeC, and stirred for 2 hours. The obtained reaction liquid was cooled, and 200 parts of water was poured, stirring, and the product was precipitated, and the unreacted silylating agent was deactivated and separated. After separation by filtration, it was fully washed with water, recrystallized with acetone, and purified to obtain 105.6 parts of 1-hydroxy-2-trimethylsiloxy-1,1,2,2-tetraphenylethane (yield: 88.3%) . After HPLC analysis, it was 99.0% (area percentage). In addition, a molecular ion peak of 438 w...

Embodiment 1～5、 comparative example 1～3

[0090] (Preparation of liquid crystal sealing agent for liquid crystal dropping method)

[0091] After mixing and stirring each resin component (component (c), component (d)) in the ratio shown in Table 1 below, the radical polymerization inhibitor (component (b)) and the photopolymerization initiator (component h)) were heated and dissolved. After cooling to room temperature, add a silane coupling agent (component (f)), an inorganic filler (component (g)), a thermal radical initiator (component (a)), a thermosetting agent (component (e)), etc. , after stirring, it was dispersed in a three-roll mill, and it was filtered through a metal sieve (635 mesh) to prepare the liquid crystal sealing compound for liquid crystal dropping method of Examples 1-5. Moreover, the liquid crystal sealing compound for liquid crystal dropping methods of Comparative Examples 1-3 was produced similarly using each component shown in Table 1.

[0092] The contents of evaluation items and the results ...

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
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

Provided is a liquid crystal sealant for a liquid crystal dropping process, having excellent handling properties and storage stability, as well as extremely low staining with respect to liquid crystal in process, due to having fast response to heat. This liquid crystal sealant for a liquid crystal dropping process contains (a) a thermal radical polymerization initiator not having an oxygen-oxygen bond (-O-O-) and a nitrogen-nitrogen bond (-N=N-) in the molecule thereof, (b) a radical polymerization inhibitor, and (c) a curable resin having a (meth)acryloyl group.

Description

[0001] This application is a divisional application of a patent application with an application date of July 12, 2012, an application number of 201280034501.0, and an invention title of "Liquid Crystal Sealant and a Liquid Crystal Display Unit Using It". The entire content is hereby incorporated by reference. technical field [0002] The invention relates to a liquid crystal sealing agent for a liquid crystal dropping method which can be cured when heated. More specifically, it relates to a liquid crystal sealing agent for a liquid crystal dropping method which has good thermal curability and good properties of a cured product such as handleability, storage stability, and adhesive strength, its manufacturing method, and its cured product. Background technique [0003] With the increase in the size of liquid crystal display units in recent years, a so-called liquid crystal dropping method having high mass productivity has been proposed as one method of manufacturing liquid cry...

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 Applications(China)
IPC IPC(8): C08F299/02C08G59/17G02F1/1339
CPCC08F299/02C08G59/1466G02F1/1339
Inventor 荷见直美桥本昌典菅原坚太曾根真规惠
Owner NIPPON KAYAKU CO 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