A kind of transparent silicone gel for laminating liquid crystal screen

Abstract

A transparent silicone gel for bonding liquid crystal screens. The raw material formula includes 35-55 parts of component A; 10-25 parts of component B; 15 parts of component C2; 5 parts of adhesion promoter; 5-25 parts of component E; 0.1-5 parts of the catalyst; 0.1-1.0 parts of the inhibitor; the component A is a vinyl-terminated polysiloxane conforming to the general formula (1): the component B is a vinyl-terminated polysiloxane conforming to the general formula (2) Propoxy polypropylene oxide: the component C is a vinyl MQ silicone resin, and the M:Q ratio is 0.8-1.5; the component E is a terminal hydrogen polysiloxane conforming to the general formula (3). The transparent silicone gel for bonding liquid crystal screens prepared by the invention has the advantages of low viscosity, short defoaming time, fast curing and molding, and moderate hardness.

Description

Technical field [0001] The present invention relates to a liquid crystal screen with a transparent silicone gel, belonging to the technical field of adhesive materials. Background technique [0002] There is the following problems during the traditional LCD screen. On the one hand, the light is present in the process of communication in the display, and there is a dazzling problem that does not match the media refractive index; on the other hand, the three modules of the touch screen need to pass twice. Get, high cost, more process, and there is a relatively much relatively possible. [0003] Usually, the silicone system silicone gel is used as a screen to fit liquid optical glue. Since the refractive index after curing is almost uniform with the glass, the thickness of the bonding is usually controlled around 0.1 mm to 0.2 mm, so this technique is used The screen has the advantages of light, slim, showing good results. At the same time, the silicone gel has a certain amount of t...

AI Technical Summary

Problems solved by technology

[0002] The following problems exist in the traditional LCD bonding process: on the one hand, when the light propagates in the display, there is a problem of glare caused by the mismatch of the refractive index of the medium; on the other hand, the three modules of the touch screen need to go through two Fitting, high cost, many processes, resulting in relatively more defects

At the same time, silicone gel has certain advantages such as toughness, high elongation at break, and shock absorption, but it is usually used for liquid crystal screen bonding. , the cross-linking density increases, the hardness of the silicone gel is harder after curing, and there are problems such as a decrease in viscosity after lamination, poor thermal and thermal shock effects, and attenuation of damping effects.

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