Oleophobic coating: what is it?

Reading the next review on some newfangled smartphone, you probably turned your attention to the phrase “oleophobic coating”. Many users do not know what it is, so today we fill the gap.

The word “oleophobic” originates from two Greek words, which in translation into Russian mean “oil” and “fear” or “fear.” In fact, this is a special film that is applied to the screen of a smartphone. The film allows you to repel fats and some dirt from the touch screen. If you pick up a budget smartphone and use its screen for at least 10-15 minutes, the screen will soon become bold. To get rid of fat, just wipe the screen with a napkin, for example, microfiber. But fat in this case is not so easily erased, therefore, most likely, you will have to make a lot of extra movements.

In the case of a screen on which an oleophobic coating is applied, firstly, there will be fewer oily spots, and secondly, to erase them, as a rule, it is enough to wipe the screen once with a napkin. Unfortunately, oleophobic coating is not so common on budget smartphones, but there are all prerequisites for the fact that soon this chip will become standard for almost any smartphone.

What is an oleophobic coating??

The oleophobic coating is a film of nanometer thickness (nanometer is a unit of length equal to one billionth of a meter), which, as we explained above, can cope with dirt and grease. It is interesting that you can feel the oleophobic coating with your fingers, however, if you compare two screens at once: one with an oleophobic coating and the other without.

The oleophobic coating consists of a mixture of alkylsilane (0.1% – 10%), silicone and a solvent (0.01% – 10%). Two methods of applying the composition are used: either by vapor deposition, or through the use of silicon dioxide. The composition in both cases is applied by spraying..

The oleophobic coating was patented in 2005. It was invented by two German scientists. In fact, for the oleophobic coating, you should thank Apple, which filed a patent for an improved coating and began to use it in its smartphones, the first of which was the 3GS model. Further, other manufacturers began to use the oleophobic coating..

In some cases, the oleophobic coating is not used on the screen itself, but on a film that is glued to the smartphone screen.

How to keep an oleophobic coating?

The oleophobic coating is subject to erasure over time (not always and not on all models). This usually happens for the simple reason that the owner of the device often touches the screen and swipes it with his fingers. For example, avid gamers often complain about coating erasure..

Another reason is the use of a smartphone without a case or film on the screen. When you put the device in your trouser pocket, the screen comes into contact with the fabric and the layer gradually abrases.

To at least delay the abrasion of the coating, do not wipe it with alcohol-containing agents, use covers and films, and do not leave the screen in the sun.