Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Frame sealant composition and display device

A technology of composition and frame sealing glue, which is applied in the direction of adhesive, epoxy resin glue, adhesive type, etc., can solve the problems of non-compliance, increasing the adhesion performance of the sealing glue, insufficient adhesion, etc.

Inactive Publication Date: 2014-08-06
BOE TECH GRP CO LTD +1
View PDF6 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the development of the narrow frame, the commonly used alignment film material polyimide (PI) and sealant (Sealant) are repeatedly coated (overlap, that is, polyimide and sealant are overlapped). During the cleaning process of the alignment film material polyimide after rubbing, simple air knife (Air Knife) and infrared drying (existing washing method) are difficult to remove the strong adsorption on the polar active alignment film material polyimide. Water molecules or other wash solvents on the imine surface (see figure 1 ), and then the alignment film material polyimide has insufficient adhesion to the frame sealant, resulting in insufficient adhesion (that is, Peel Off does not meet the standard) or high-temperature residual image in the reliability evaluation
In addition, when the alignment film material polyimide and the sealant are coated without overlapping, a certain amount of water molecules will also be adsorbed in the coated area. At the same time, water molecules or other solvent molecules will undergo friction treatment over time. Afterwards, the curved surface diffuses along the friction treatment direction, and when the diffused water molecules enter the sealant area, the phenomenon of insufficient adhesion between the alignment film material polyimide and the sealant will occur.
However, the existing sealant components are usually UV curing, heat curing or both curing methods, which cannot avoid the influence of moisture, so the adhesion performance of the sealant cannot be effectively increased. In the design, there are often problems of substandard reliability

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
  • Frame sealant composition and display device
  • Frame sealant composition and display device
  • Frame sealant composition and display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The preparation method of the above-mentioned dual-curing resin described in the present invention is prior art, such as using hydroxyl-terminated silicone oil (107) (Jinan Hailan Chemical Co., Ltd.) and methacryloxypropyltrimethoxysilane (KH570) ( Sinopharm Group Chemical Reagent Co., Ltd.) as raw materials, prepared by dealcoholization reaction under nitrogen protection, 60°C, dibutyltin dilaurate catalyst (300ppm addition) reaction conditions. In addition, those skilled in the art can also prepare the dual-curing resin through other preparation methods, which is not particularly limited in the present invention.

[0043] Wherein, the secondary sealant composition further includes a photoinitiator. The photoinitiator described in the present invention is obtained by modifying hydrogen-containing silicone oil and 2-hydroxy-2-methyl-1-phenyl-1-propanone.

[0044] The preparation route of above-mentioned photoinitiator is as follows:

[0045]

[0046] Hydrogen-conta...

Embodiment 1

[0074] The preparation of embodiment 1 photoinitiator

[0075] The photoinitiator described in this embodiment is obtained by modifying silicone oil and 2-hydroxy-2-methyl-1-phenyl-1-acetone, and the specific modification method is as follows:

[0076] Using hydrogen-containing silicone oil (PMHS) with a hydrogen content of 0.75mol / g (Shanghai Tuhe Industrial Co., Ltd.), the raw materials of hydrogen-containing silicone oil and 2-hydroxy-2methyl-1-phenyl-1-propanone in tetrahydrofuran solvent Proportion n Si-H :n -OH The ratio is 1:1.1, and the photoinitiator with the following structure is obtained by reacting at 60°C for 10 hours under the catalytic conditions of a basic catalyst:

[0077]

Embodiment 2

[0078] The preparation of embodiment 2 photoinitiators

[0079] Using hydrogen-containing silicone oil (PMHS) with a hydrogen content of 0.8mol / g, the raw material ratio of hydrogen-containing silicone oil and 2-hydroxy-2methyl-1-phenyl-1-propanone in tetrahydrofuran solvent n Si-H :n -OH The ratio is 1:1.15, and the photoinitiator with the following structure is obtained by reacting at 60°C for 9 hours under the catalytic condition of a basic catalyst:

[0080]

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

No PUM Login to View More

Abstract

The invention discloses a frame sealant composition capable of improving a residual image. Novel dual-cured resin materials are introduced into a conventional frame sealant system and serve as components of an auxiliary frame sealant to form a frame sealant system in a multi-cured mode. The frame sealant system has thermo-curing and / or UV curing properties of a main adhesive to endow the main adhesive with sufficient strength, the auxiliary frame sealant can be UV-cured and moisture-cured through corresponding curing groups, and a glass substrate can be combined with the main adhesive and a frame sealant together, so that the phenomenon of insufficient adhesion force caused by solvent molecules such as water vapor when the glass substrate is packaged by a conventional frame sealant is avoided, and the frame sealant is high in adhesion strength and excellent in puncture resistance.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a frame sealant composition and a display device. Background technique [0002] Currently, in the development of display devices, narrow borders and high picture quality have become the common goals of manufacturers and demanders. However, in the development of the narrow frame, the commonly used alignment film material polyimide (PI) and sealant (Sealant) are repeatedly coated (overlap, that is, polyimide and sealant are overlapped). During the cleaning process of the alignment film material polyimide after rubbing, simple air knife (Air Knife) and infrared drying (existing washing method) are difficult to remove the strong adsorption on the polar active alignment film material polyimide. Water molecules or other wash solvents on the imine surface (see figure 1 ), and then the alignment film material polyimide has insufficient adhesion to the frame sealant, resulting in ...

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): C09J163/02C09J133/00C09J183/07
CPCC09J133/08C09D4/06C08G77/18C08G77/20Y10T428/31663C09D133/08G02F1/1339B32B7/12B32B2457/202
Inventor 李建张伟李鸿鹏宋省勋
Owner BOE TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products