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About the Composition of Mobile Phone Tempered Film

Feb. 12, 2020
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The composition of the mobile phone tempered film is simply divided into three parts: AB glue, tempered glass, and coating.

1.AB glue

Simply put, it is a PET film (that is, a PET substrate) coated with silicone on one side and OCA optical glue on the other. Silicone face is attached to the mobile phone screen, OCA is glued to the tempered glass. Many businesses on the market are basically equipped with PET film for functions such as purple light, anti-blue light eye protection, and anti-peeping. Good AB glue is ultra-thin, has higher light transmission, good exhaust, and more sensitive touch.

If the silicone surface of AB glue is good enough, it will automatically fit without white edges when the film is pasted. Poor glue sometimes has insensitive touch or failure or touch jumping. It's annoying. I want to replace the tempered film after using it for a long time, and then I find it difficult to tear it off. Some even tear off the tempered film, and there is residual glue on the screen. On the one hand, it may have been used for too long, and another reason is that the glue is not good. It should still be easy to tear off a good sticker for two or three months. It can be used normally if you peel it off and paste it on another mobile phone.

Tempered Glass

Tempered Glass

For ordinary film, if there is a little tiny dust on the screen, it may produce a large bubble if it is not cleaned (sometimes there will be bubbles if there is no dust). And our 3D curved tempered glass is found to have small dust, and the dust has been stuck by the adhesive of the tempered film. Just tear the tempered film off again, and use a vacuum cleaner or transparent glue. Gently remove the dust from the tempered film, and then reattach it. It can be used in the same way. There are many reasons for the white edge. Poor glue is one of them, and the mobile phone screen may be uneven (some mobile phones have changed the external screen, and the external screen is sometimes not flat enough). It is also related that the tempered film is too thick.

2.Tempered glass

The top-level toughened film is imported high-alumina silicon glass, cost, raw material supply, market and many other reasons. Most of the world uses ordinary toughened glass, as well as a strengthened glass (also called semi-tempered glass).

The so-called "toughening", to put it simply, is to heat the glass to a temperature that is about to soften and then let it cool quickly. This process is the only way to turn ordinary glass into tempered glass, and the tempering time is enough to really improve the performance of glass.

The high strength of tempered glass has to be said, and the strength includes impact strength and flexural strength.

First of all, it is necessary to say the bending resistance:

Many people think that tempered glass is very hard. In fact, bending resistance is also one of the characteristics of tempered glass that is different from ordinary glass. In particular, the tempered glass used as a tempered film has a strong bending resistance. A thinner layer can even easily overlap the top and bottom, and the impact strength is also stronger.

Thickness and impact strength: The thickness of the toughened film on the market is generally 0.3 or more, less than 0.3mm is a big cut, 0.2 is less, 0.15 and 0.1mm can be said to be rare. The thicker the toughened film, the higher the impact strength, but the role of the toughened film is not only impact resistant, normal use does not have that much impact. People who like thick feel choose thicker. The anti-fall function, the phone with a toughened film can protect the screen of the phone from cracking to a certain extent. It is best to avoid falling, if the drop of the mobile phone is inevitable, the most vulnerable place of the tempered glass is the four corners. No matter how good the tempered film, there is a possibility of chipping. The popular all-inclusive tempered film on the market is also easy to chip. The higher the number in front of D, the higher the degree of curvature of the tempered film edge, that is, the curvature of the curved edge is higher (that is, the edge is much thinner than the middle part), but the side where they are attached to the mobile phone screen is still flat. The main purpose of cold carving and hot bending is to make the edges more rounded.

Aiming at the problem of easily broken edges, there is a process called "second-strong". The second strength process can further increase the strength of tempered glass. As for the specific process flow of the second strong, you can also check the information to understand. The tempered film is also known for its better scratch resistance.

Scratching on the tempered film with a knife, it is not easy for a piece of tempered film to leave scratches. Because toughened glass has a higher hardness than the blade.

3. Coating (hydrophobic layer, oleophobic layer, oiled layer)

Advantages: smooth, easy to clean, dripping into beads

When the screen of most mobile phones is wiped with a wet paper towel, there are small drops of water instead of a layer of water. The reason is that the screen surface is also coated, but this coating may be as long as the tempered film. Will wear off.

In summary, a good tempered film is probably: easy to stick, easy to tear, not easy to break edges, smooth, easy to clean.

Whether you need matte vision or anti-blue light or high transparency, or recently more popular features such as anti-peeping, depending on personal needs.


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