Is it necessary to attach a tempered glass film to the mobile phone?
[China Glass Network] I believe that many friends consider the tempered glass film because of its anti-scratch and anti-drop properties. In terms of anti-dropping, the screen is not broken, it is really a matter of luck, tempered film. Known as anti-fall, that is, reduce the probability of broken screen. In terms of scratch resistance, the tempered film generally promotes the surface hardness of 9h. This hardness standard is different from the Mo-type hardness we often say. 9h is specifically made of 9h pencil. There is no trace on the surface, and nothing more.
In fact, as long as it is a glass film, the Mohs hardness will not exceed 7, which is about 5-6, larger than metal, less than quartz, which means that the general key and knife will not scratch the glass film, this is not the surface coating. Relationship, it will still be worn out by quartz (that is, dust and fine particles in daily life).
The mobile phone screen is also the same. At present, most mobile phones use the Gorilla 3rd generation glass screen. The Mohs hardness of this screen is about 6.5. Although it is higher than the average tempered film, it still does not reach 7, if you are The environment is dusty, then it is more necessary to choose the film. If you are not very concerned about the screen of the mobile phone, and the replacement cycle is short, then it will have no effect if it is not attached. The strength of 6.5 is enough to make your mobile phone resist large. Part of the scratch.
In addition, it should be noted that the film described in the previous small series is a tempered film. If you want to stick a general plastic film, it is not necessary to tell the truth. The hardness of ordinary plastic film is usually 2H, which is higher after hardening. It can be 3~4H, which is similar to the hardness of nails. This is equivalent to car waxing. Things that can scratch them can be seen everywhere, and scratches can easily occur shortly after filming, which affects your vision.
Simple questions are simple and easy to answer. Let's move on to the extended reading stage. Today we will talk about the tempered glass film.
The defensive thickness of the tempered glass film
Currently, there are only four types of tempered glass film on the market: 0.4 mm, 0.33 mm, 0.2 mm, and 0.15 mm. These four thicknesses also refer to the thickness of the glass raw material, and have not yet included the thickness of a layer of AB glue used to adsorb the screen of the mobile phone. Generally, the thickness of AB glue is 0.085 mm to 0.15 mm (the brand of AB glue is different, the thickness is not the same). Then the thickness of the finished tempered glass film is 0.235 mm, and the thickness of the product on the market is only the raw material. thickness of.
Even so, the thickness is still a variety of virtual standards by various manufacturers. 0.4mm glass is marked as 0.3mm, 0.33mm is marked as 0.26mm, 0.2mm is marked as 0.15mm, and even many infinite merchants directly mark the 0.4mm tempered film as 0.1mm without any effort. It is necessary to know that the thickness of 0.1mm is basically the same. Plastic protective film is almost the same, this is simply impossible, so everyone should pay more attention when buying tempered glass film, do not be fooled by some profiteers.
Anti-fingerprint effect on tempered glass film
The product promotion of many merchants mentioned that the tempered glass film can prevent fingerprints. In fact, the accurate statement is that the high quality tempered glass film can reduce the fingerprint residue on the glass film, and can not completely eliminate the fingerprint. The method is to add a layer of anti-fingerprint oil on the surface of the tempered glass film, and this layer of anti-fingerprint oil coating can also be easily removed under the condition that the surface of the tempered film is stained. There are also high and low points regarding this anti-fingerprint oil treatment process.
At present, the lower-level anti-fingerprint treatment on the market is not subject to any treatment, and no anti-fingerprint oil is applied. This is only a result of some profiteers, in order to squeeze costs and increase profits.
A little high-end is the hand-painted anti-fingerprint oil. The so-called hand-painting is a hand brush, and the anti-fingerprint oil is directly applied to the surface of the glass film. The disadvantage is that the anti-fingerprint effect is uneven and the anti-fingerprint oil is easy to fade.
Some of the higher-end ones are machine-coated/plasma-sprayed fingerprint oils, which are generally used by manufacturers with a small scale and a bit of conscience. This process is better than hand coating, and the disadvantage is that it is less durable. The actual situation is that when you use it for about 20 days, you will find that the anti-fingerprint effect has been greatly reduced, because the anti-fingerprint oil has been rubbed.
The anti-fingerprint oil on the market is electroplated anti-fingerprint oil. In general, only a few manufacturers of high-end tempered film use electroplating anti-fingerprint oil. The principle of electroplating is not explained here in small series. In short, the effect of tempered glass film after electroplating anti-fingerprint oil process is more smooth and more durable, and generally lasts for more than 2 months.
If you use the film frequently, you can tell the quality of the touch from the touch of the tempered film.
Can the tempered glass film prevent the screen of the mobile phone from being broken?
As Xiaobian said earlier, in fact, the screen is not broken, it is really a matter of luck. The tempered film is called anti-drop, which is to reduce the probability of broken screen. Since the main body of the glass film is still ordinary glass, the strength will not be higher than that of the Corning Gorilla Glass used in medium and high-end mobile phones, or you will see the magical sight of the broken screen.
From the point of view of the fit form, this flexible fit can not increase the strength of the screen at all, but you can regard the tempered film as the second external screen of the mobile phone. If the mobile phone falls, the tempered film can absorb certain damage. , to reduce the probability of broken screen. Of course, you don't expect it to play a big role. If the phone falls from a height of tens of meters, you are still ready to buy another phone.
The tempered glass film itself is fragile and try not to choose low-priced goods.
Many friends have experienced the automatic cracking of the glass film after purchasing the tempered glass film. In fact, this is well understood. The tempered glass film is also glass, so it is normal to break it.
The decision to crack the tempered glass film is divided into two categories. One is the problem of the product itself, and the other is the problem of use. From the product itself, whether the tempered glass film is fragile is analyzed from raw materials and processes.
1. Raw materials. The glass film is made of different brands of glass raw materials. There is a difference in strength between different raw materials. However, unless it is a glass raw material that has its own defects, most of the glass manufacturers' brands are not very different in terms of strength glass.
2, processing technology. There are three main processes for determining the quality of the finished glass film: CNC cutting, arc edge polishing and tempering furnace tempering. CNC cutting is to cut the glass material into a shape suitable for the phone model. Arc edge polishing is to polish the straight edge tempered film into a 2.5D arc edge. The tempering of the tempering furnace is to let the semi-finished glass film work in the high temperature furnace and the potassium nitrate to make the strength of the glass film slightly increase the strength, greatly increase the toughness, and ensure that the glass film is broken and does not cause harm to the human body.
Regardless of the bonding of the glass film backing, these three processes are three processes that are relatively easy to produce a glass film defective product. Cutting and polishing may cause the glass to burst. The tempering time of the tempering furnace is not enough, and the poor use of potassium nitrate will result in a decrease in strength and toughness. Most of the defective products produced in the production process have been eliminated in the production process, and a small number of defective products are undetectable by the naked eye, leaving dark wounds and trachoma, etc., as good products to enter the market, and will be fragmented when used slightly. Therefore, when you decide to buy a tempered film, you must remember to not choose the low-priced goods in the market. Although the film industry is profitable, sometimes the principle of one penny can be universal.
In addition, the thickness and strength of the tempered glass film also have a certain relationship. In terms of strength, the thick glass film is slightly stronger, and the thinner glass film is less strong, but the thinner the glass film feels better, everyone is choosing When tempering the film, it depends on its own situation.
Having said that, I will summarize the advantages and disadvantages of the tempered glass film for everyone. We can make a reference according to our own situation.
Advantages: Compared with ordinary plastic film, it has high hardness, good light transmission, good surface performance, good oleophobic and hydrophobic feel, not easy to stain, easy to clean, easy to fit, and has certain protective functions.
Disadvantages: fragile, high cost, thick, edge processing defects. Due to the thickness of the tempered film, even with a thin 0.15 mm film, the edges can break the integrity of the grip. In addition, the resin adhesive layer exposed on the edge is also easy to hide, but for curved screens, the tempered film can hardly match, such as the Samsung Galaxy Edge, even the iPhone 6 with a 2.5D screen, the edge of the screen is a curved transition. Can not use tempered glass film to the frame
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