Two years ago, a folding screen mobile phone made its debut. While people were amazed, it also triggered a discussion about the practicality of different folding directions. Nowadays, with the release of Huawei's new generation of folding screen mobile phone Mate X2, although the folding direction has finally been unified "inward", the discussion on practicality has not ceased, but the new discussion focuses on the folding screen. The screen material aspect.
Regarding the screen material of the folding screen, I believe that many friends who have seen the Huawei Mate X2 conference first think of the "magnetron nano-optical film" that Huawei emphasized, and will say that its reflectivity is lower. But it should be noted that this optical film is not what we call the screen cover material, so don't confuse the concept.
In the current market, there are two screen cover materials used for folding screens, one is double-layer polyimide, or CPI, and the other is Samsung’s own ultra-thin flexible glass, or UTG. Looking back at the Huawei Mate X2 conference, we did not find that it has introduced the core technology of this folding screen, but we can know from the news of the supply chain that the screen cover material used by the Huawei Mate X2 is CPI. Regarding this material, in the early days of the advent of folding screen mobile phones, due to the limitations of various technical factors at that time, it became the choice of almost all folding screen mobile phones. At the same time, because of its good flexibility and ductility, it became an excellent solution for the material of the screen cover of the folding screen mobile phone at that time. Therefore, including the Huawei Mate X and Huawei Mate Xs that used the outer folding scheme before, and the Huawei Mate X2 just released now, all use this material. Therefore, we can understand why Huawei did not focus on this part.
CPI film
However, although the technology of applying CPI material is relatively mature and the yield rate is high, the drawbacks will gradually show after long-term use, especially its low surface hardness and poor scratch resistance, making it easier Hidden dangers of maintenance costs are buried. In addition, judging from the product performance of Huawei Mate X2, perhaps the new phone can be slightly creases and super flat as claimed at the press conference, but after a long time, the crease will still become a big groove, or even a crease. The two changes are quite different from what was shown at the press conference, and will bring a very uncomfortable look and feel during daily use.
Huawei Mate X2
What is the difference between another Samsung self-developed UTG material and CPI? As we all know, since 2020, Samsung's Galaxy Z Flip 5G, Samsung Galaxy Z Fold2 5G and Samsung W21 5G have all adopted this material. In contrast, Samsung UTG material has more obvious advantages. First of all, from the point of view of physical properties, Samsung UTG's hardness is significantly better than CPI, and the surface flatness is also better; secondly, UTG's impact resistance, wear resistance, light transmittance, etc., have also formed a comprehensive compaction on CPI. And after being tested by the French certification agency Bureau Veritas, UTG material has achieved a durability score of "200,000 foldable times", which allows users not only to be more assured when using it, but also to greatly improve the experience.
Samsung Galaxy Z Fold2 5G and Samsung Galaxy Z Flip 5G
Through the above direct comparison, it can be seen that Samsung UTG is superior to CPI in all aspects, and the only limitation is that UTG technology is still in the emerging stage. There are few manufacturers except Samsung, but it is only a matter of time before it will become the best choice for the material of the folding screen cover in the future. It is reported that Samsung Display is currently developing technologies such as foldable OLED panels and supplying them to OPPO, Xiaomi and Google, and these products may also be launched within the year.
On the screen, many mobile phone manufacturers recognize Samsung's absolute advantage in this field, and friends who often watch mobile phone conferences also know that many mobile phone manufacturers will use Samsung screens as the phone when they release new phones. Highlights, and quality assurance of visual experience. Therefore, from the current point of view, future folding screen products will continue this "industry tradition", and Samsung will continue to provide consumers with a better folding screen experience.
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