Safety glass 2 5d arc glass. What is the difference in the appearance of protective glasses for a smartphone

2.5d

This is glass with rounded edges, which are created on special equipment.

I would like to tell you right away that 2.5d glass is not better than 2d glass. Since this is just a marketing ploy. Sellers motivate this by the fact that they will not cling to the edges. The question immediately arises, and ordinary glass with a thickness of only 0.33 mm. How and for what can it catch on? It is so thin that it is barely visible to the eye. The bumper always protrudes from above. When falling on a flat surface with the front side, the protruding edges of the bumper usually prevent you from even touching the front of the mobile phone. Therefore, we advise you to comprehensively protect against injury and purchase a bumper. See the example below.

The image shows how much the glass is below the Case ledge. As they say, there is nothing better than practice, so we advise you to check it out on your own experience. Then you will definitely be sure of this yourself.

3d

It is curved glass that really, almost completely covers the screen of your flagship. This should be installed on curved displays such as iPhone 6, 6S, Samsung Galaxy S6 EDGE, S8, and so on. I think that there is no point in listing everything, there are quite a few of them. It looks like this:

Output

Any questions left? Write them in the comments section, I will try to answer you as quickly as possible.

Everyone wants to get not only a reliable, but also an attractive smartphone at an affordable price.

It's no secret that the screen is the most vulnerable spot in mobile gadgets. To ensure its reliable protection, manufacturers use protective glasses. Particularly successful in this matter is Corning, which has released several generations over the years.

What does 2.5D glass mean?

Many associate this concept with something high-tech and unique, but this is a misconception. If we consider the design and principle of creating 2D and 3D glasses, we can see their fundamental difference. However, the 2.5D glass type is still one of the design solutions of 2D glass, and their production technology is identical.

So what is so special about this element? The whole point lies in the processing of the edges of the protective glass, namely, in their rounding. This creates a rounded effect on the screen, which also receives high-quality shock and drop protection. The rounded edges usually blend seamlessly with the body, and for each smartphone the glasses are made individually with the desired bevel angle.

The principle of creating a 2.5D surface obeys general laws. It should be understood that this is flat glass, which, like everyone else, is cut from a large canvas. After trimming and smoothing the edges, it is heat treated in a solution of molten salts. Then there is a sharp cooling, which hardens the glass, giving it increased strength.

Advantages of 2.5D glass

From the above, the main advantages of 2.5D glass can be identified:

• High ergonomics. Smooth edges allow more comfortable use of the touch screen without fear of cutting on sharp corners. And the likelihood of catching and tearing a pocket is reduced to zero.
• Additional protection. The 2.5D tempered glass is very durable. This helps protect the display from drops and bumps.
• Original design. The rounded edges give the screen a sense of volume and give the smartphone an attractive look.

Many brands are constantly looking for new directions for the development and improvement of the appearance of devices. 2.5D glass has become an adornment of many modern smartphones in recent years. This is a certain marketing ploy that can increase the popularity of a mobile gadget.

Such glasses are used not only in the production of smartphones. They are actively used in televisions and even in cars. 2.5D glass is not a novelty, it has just gotten a lot of publicity. This element was used many years ago, for example, in the Nokia N8 (2008).

Today, many are interested in the question: "What is this 2.5D glass?" The fact is that a lot of smartphone and tablet manufacturers produce devices with this type of glass.

But for users, this designation is expressed only in the inscription on the box and in the characteristics /.

Otherwise, they hardly notice the difference between a device with 2D and 3D glass, and even more so with 2.5D.

Although attentive users will immediately notice the difference.

In any case, it is worthwhile to figure out what kind of glass it is, what are its advantages and whether it is worth overpaying for gadgets with it.

What is 2.5D glass

In principle, everything here is the same as in geometry. There are 2D, 3D and 2.5D. 2D is an ordinary flat, two-dimensional surface with X and Y planes.With 3D, things are much more complicated, because there is another Z plane.

Smartphone manufacturers have made a cross between these very planes.

If we apply geometric concepts to the screens of smartphones / tablets, then it turns out that 2D glass is a simple smooth glass without any dents, grooves and roundings.

The 3D glass will then be a surface curved at the edges. Moreover, even on its curved parts, something will be displayed in the same way as it happens on the flat part.

Based on this, it turns out that 2.5D glass is an almost flat surface, but with slight curves. All this is clearly shown in Figure 1.

That is, the whole essence of the concept of "2.5D glass" is that the edges of the glass are processed in such a way that they visually appear to be rounded.

However, they are rounded, but not as much as in the case of 3D glass.

There are a few more points that experts highlight when they talk about 2.5D glass. We'll cover all of them:

1. The rounded edges usually blend in perfectly with the body, but each model has its own glass with its own unique radius of curvature. That is, for some smartphones, the same 3D glasses will not work at all, because the radius of curvature of their edges will not allow the glass to "merge" with the device. Then it will constantly fall out and be damaged.
2. Initially 2.5D, and 3D glasses are usual 2D. But through heat treatment in saline, the edges gradually begin to become rounded. Before this, a contour of the desired size is cut from the common canvas. After a certain time, the glass undergoes rare cooling and literally solidifies. Thus, a strong and reliable glass is obtained. The time of its residence in the solution completely depends on the future corner of the rounding.
3. 2.5D glass is not some novelty or recent invention. It was used many years ago (2008 for sure). It's just that now they began to actively advertise and distribute it. But hardly anyone can argue with the fact that such glass really looks very good.

Today, 2.5D glass has become an adornment of such famous smartphones as Meizu M3s, Google Nexus 6, Xiaomi Mi Note, Samsung Galaxy A5 and even itself!

Rice. 2. iPhone 6 with 2.5D glass

Above, we said that 2.5D glasses were used back in 2008. So, Nokia N8 is a fine example of that time.

Rice. 3. Nokia N8 with the same 2.5D glass.

As you can see, 2.5D glass is a fairly well-promoted product. But the question is, is it really worth buying devices with it? Or is it just another advertising gimmick? We'll find out now!

What experts say about 2.5D glass

Many experts in the technical world say that 2.5D glass does have many advantages. It is about this:

1. Reliability. Due to the aforementioned procedure for making such glass, it becomes unusually strong. Tests fully prove this fact. Of course, it will not withstand a hammer blow, but it will not be afraid of falling on the ground.
2. Additional ergonomics. The fact is that sharp corners in 2D glasses often became the cause of discontent among many users. It got to the point that some even cut about them. Others had unexpectedly cut pockets. Of course, this is possible only in the case of very low-quality clothing, but it is still possible.
3. Unusual design. The truth is, users are much more fond of the slightly rounded 2.5D glass than the regular 2D. Of course, 3D looks even better, but it also costs significantly more. The appearance of the device with such glass is quite luxurious.

In general, such products have many advantages and it is true, as experts say, this is not some kind of advertising gimmick or gimmick.

2.5D glass features additional reliability, excellent design and ergonomics.

Again, this is all supported by the opinions of authors from various sites on the Internet and experts.

BUT!

There is always some "but" and everything cannot be so simple. Indeed, there are several points that should also be discussed. All this can affect the final choice.

Is everything really that good

Now let's think a little. Yes, experts say this glass is so good and is definitely worth buying.

To put it another way, manufacturing firms would have to make a lot of efforts in order to still promote their products.

Of course, we do not question the opinion of experts known in the world of technology, but it all looks rather strange.

In addition, it is interesting that there are actually very few articles on the Internet that talk about what 2.5D glass is and where it is used.

One simple conclusion can be drawn from all this: not everything is as good as it seems at first glance.

Rice. 4. Xiaoni MI Note with 2.5D display.

On the forums, you can find many posts in which people write about how smartphones with such a curved display were scratched and broken.

And it happened in the same way as it usually happens when using conventional flat panel displays - put it in your pocket along with the keys and the screen was scratched.

Quite a commonplace situation!

That being said, if scratches appear on curved areas, the repair process is much more complicated and expensive than with a conventional display.

And in general, replacing such glass is quite an expensive pleasure. In some cases, it's easier to buy a new phone.

So, from all of the above, several intermediate facts suggest themselves:

1. Fact # 1: Developers recently started to advertise 2.5D screens, even though they were developed a long time ago.
2. Fact # 2: 2.5D glass is praised by all experts.
3. Fact # 3: People on forums report that they scratch and break just like regular flat screens.

From all this, the following conclusion can be drawn: 2.5D glass is more marketing than real benefit.

Yes, maybe there is a smallest degree of protection and strength in these screens, but not enough to protect them from commonplace damages from which all such products suffer.

So why buy a device with 2.5D glass then?

Quite a logical question. But there is still a point in such a purchase, but not always.