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A kind of full-fit frame glue for touch screen and preparation method thereof

A full lamination and touch screen technology, applied in adhesives, adhesive additives, polymer adhesive additives, etc., to achieve low shrinkage, avoid equipment tailing, and meet operational requirements

Active Publication Date: 2020-06-05
新纶光电材料(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of glue overflow and uneven thickness when the existing silicone LOCA is pasted, the present invention provides a frame glue for full bonding of touch screens and a preparation method thereof. The frame glue is compatible with the silicone LOCA Very good performance, after curing and bonding, there will be no black edges and it can effectively solve the problem of glue overflow and uneven thickness during LOCA bonding

Method used

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  • A kind of full-fit frame glue for touch screen and preparation method thereof
  • A kind of full-fit frame glue for touch screen and preparation method thereof
  • A kind of full-fit frame glue for touch screen and preparation method thereof

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Embodiment Construction

[0025] The present invention and its beneficial effects will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0026] A is vinyl silicone oil, A-1 is vinyl-terminated polydimethylsiloxane with a viscosity of 100mPa·s; A-2 is vinyl-terminated polydimethylsiloxane with a viscosity of 800mPa·s; A- 3 is vinyl-terminated polydimethylsiloxane with a viscosity of 1500mPa·s; A-4 is vinyl-terminated polydimethylsiloxane with a viscosity of 2000mPa·s; A-5 is vinyl-terminated polymethylsiloxane Vinyl siloxane with a viscosity of 1000mPa·s.

[0027] B is hydrogen-containing silicone oil. The viscosity of the hydrogen-containing silicone oil on the B-1 side at 25°C is 30mPa·s, and the hydrogen content is 0.5%. The viscosity of the hydrogen-containing silicone oil on the B-2 side is 55mPa·s at 25°C, containing The hydrogen content is 0.35%; the B-3 terminal hydrogen-containing silicone oil has a visc...

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Abstract

The invention provides a frame adhesive for full attachment of touch screens. The frame adhesive is prepared from components in percentage by mass as follows: 20%-40% of vinyl silicone oil, 1%-15% of hydrogen-containing silicone oil, 1%-3% of a coupling agent, 30%-50% of 110 raw rubber, 5%-10% of a thixotropic agent, 1%-3% of a hardness regulator, 1%-3% of a construction aid, 0.001%-0.05% of a catalyst and 0.001%-0.05% of an inhibitor. The frame adhesive has good extrusion performance, thixotropy and adhesion and has very good compatibility with organosilicone LOCA (liquid optical clear adhesive), the refractive index between the frame adhesive and the LOCA is smaller than 0.003, and the defect of black edges can be overcome after curing attachment. The frame adhesive is packaged and used in a single-component manner, the procedures can be simplified, the operation requirement of automatic equipment in the attachment process can be met, and bubbles and impurities in the organosilicone LOCA can be prevented. The invention further provides a preparation method of the frame adhesive. The method is simple in process, safe, environment-friendly and prone to industrialization.

Description

technical field [0001] The invention relates to the field of organosilicon polymer compounds, in particular to an organosilicon laminating adhesive. Background technique [0002] When the touch screen is bonded with silicone LOCA (liquid optical transparent glue), it can avoid heavy and heavy release film, save cutting costs, more flexible application, controllable thickness, and relatively simple process. However, because LOCA has fluidity, it is easy to generate air bubbles when the touch screen and the display panel are fully bonded. Bubble extrusion is usually achieved by the flow of glue, which requires the use of a large amount of silicone LOCA, and the use of too much silicone LOCA will cause a large amount of overflowing glue on the edges of the touch screen and display panel before curing after lamination. The cover glass causes pollution; and the spilled glue needs to be manually removed, which is costly. At the same time, if automatic equipment is not used to pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/04C09J11/06C09J11/08C08J3/22
CPCC08J3/226C08J2383/07C08J2483/07C08L2201/10C08L2205/02C08L2205/025C08L2205/035C08L2205/05C08L2205/18C09J11/04C09J11/06C09J11/08C09J183/04C08L83/04C08L83/06C08L71/00C08K5/5425C08K5/10C08K7/20C08K3/36
Inventor 张利利李志才许鑫郭辉
Owner 新纶光电材料(深圳)有限公司
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