What is 2.5D glass screen ?

Since the launch of the iPhone 6, the smartphone industry has whipped up a whirlwind of 2.5D glass screens. Although this is not Apple's first use, the iPhone 6 has indeed promoted and led the 2.5D glass screen. Today, let's talk about what a 2.5D glass screen is and what features and shortcomings it has.

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What is a 2.5D glass screen?


First of all, we have to define a concept. 2D we mean is a pure plane. Previously, the screen glass of the mobile phone we used was basically flat. All the points on the glass were on the same plane. The glass of this mobile phone screen was collectively referred to as the 2D screen glass.

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What is a 2.5D glass screen? What are the characteristics and deficiencies?


The 2.5D glass screen refers to the fact that although the middle area is also a flat surface like a typical 2D glass screen, the 2.5D glass uses an arc over the edge, that is, the edge is radiated on the plane glass. This is the so-called 2.5D glass screen. In fact, 2.5D is just a generic term for the mobile phone industry. There is no 2.5D technology standard.


3D glass generally refers to glass with a much larger screen curvature, such as the LG G Flex series, Samsung's Galaxy Note Edge and Galaxy S6 Edge. These phones not only use a curved surface design for the surface glass, but also have a curved 3D screen on the electronic display component panel. This is essentially different from the 2D screen glass and the 2.5D screen glass that are curved on the glass surface only.


How does a 2.5D glass screen do it?


In fact, 2.5D glass screens do not have curved electronic display components like curved screens. Flexible electronic circuits and crystal kinescopes are not only costly but also require strong technical support. The 2.5D glass screen is only slightly more technical than the 2D screen glass, and there is no technical difficulty. Only the 2.5D glass screen during the processing of the glass grinding process there will be excessive unreasonable situation, there will be a certain loss of yield. So the 2.5D glass screen will be slightly higher than the 2D glass in terms of manufacturing costs. In terms of cost, according to the manufacturing cost, a piece of 2.5D glass is about 3 to 4 times that of ordinary glass.


What are the characteristics and shortcomings of 2.5D glass screen?


The advantage of the 2.5D glass screen is that it greatly enhances the appearance of the mobile phone and enhances the user's experience when using the screen to operate the touch screen. The 2.5D glass screen has a noticeable improvement in the visual effects of the mobile phone screen and the whole body. The 2.5D glass can make the surface of the mobile phone look like an overflowing drop of water and has more visual tension. There is a kind of screen floating on the phone body. In addition, the arc surface of the 2.5D screen is more ergonomic. The surrounding arc transition eliminates hard corners on the edges and greatly improves the feel of the sliding screen.



Disadvantages In the mobile phone with 2.5D glass screen is very difficult to find a suitable film, the market's film is often for 2D screen glass, for 2.5D glass screen film often can not cover the edge of the screen, so for most like in the mobile phone screen For users on the film, the 2.5D screen is simply a nightmare. Fortunately, most current 2.5D glass screens use Corning's gorilla glass, which has better abrasion resistance and scratch resistance. The screen of the mobile phone is not so vulnerable.


2.5D Glass Screen Phone Development History


Before the popularity of mobile phones with 2.5D glass screens, Nokia was the first mobile phone manufacturer we knew to start designing with 2.5D glass screens. Saipan’s Nokia machine used a more sleek 3D glass design on the Nokia 7100. Later 2.5D glass screens were known to us as the basic 2.5D glass screens of Nokia high-end Windows Phone models including Lumia 800 after the Nokia N9, which continued until Nokia sold its smartphone business to Microsoft. The Lumia 930 also uses a 2.5D glass screen.


  In addition to Nokia, Motorola launched the XT788 in 2012 with a 2.5D glass screen. There are also domestic Lenovo S820 also uses a 2.5D glass screen.

   The 2.5D glass screen has greatly improved the appearance of the mobile phone, and the ergonomic design enables the user to have a very good grip when using. In addition, we mentioned the cost issue earlier. A piece of 2.5D glass is about 3 to 4 times that of ordinary glass. This may increase the manufacturing cost of the mobile phone, but the premium created by 2.5D glass screens may often exceed this 3~4 times. the cost of. However, as the technology becomes more and more mature, and the large-scale application of 2.5D glass, the cost of 2.5D glass will inevitably become lower and lower.

 Although 2.5D screens currently have some deficiencies, but overall, the advantages outweigh the disadvantages. Today, most smartphones on the market use 2.5D glass screens. The 2.5D glass screen has become standard on many flagship smartphones.