There is a saying that the so-called hard screen is to add a layer of transparent resin material protective film with higher hardness on the surface of the LCD screen. The protective film gives the hard screen a certain degree of rigidity. When you press it lightly with your fingers, there will be no obvious dark shadows or water ripples on some other panels.
In fact, the reason why the hard screen is hard (that is, there is no water mark on the touch) is not that a resin protective film is added to the outside of the LCD screen, but is determined by the molecular structure of the LCD screen. The hard screen technology innovatively adopts the horizontally arranged liquid crystal molecular structure. When subjected to external pressure, the molecular recovery speed of the hard screen is 10 times faster than that of the vertically arranged molecules. Therefore, it can remain basically unchanged when touched. Not only that, when it is shaken and bumpy, the hard-screen LCD will not have the problem of jitter or residual image, and the display effect will remain unchanged.
IPS screens can be said to have quickly become popular with the hot sales of Apple iPhone 4. Many people are attracted by the fine display effect of this screen, and the IPS screen used in all devices is equivalent to the iPhone 4 screen. In fact, this idea is also wrong.
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