Screen protector
Screen protectors are specially made films which have the existing factory protective layer of the display to protect, they may also be subsequently produced in precisely fitting shape Plotverfahren and appropriate.
nature
Screen protectors consist of different layers that are specially adapted for their purpose. An adhesive layer enables it to be held on the screen surface . Among other things, it is important that the protective film can be applied without bubbles and removed without leaving any residue. The actual protective layer is designed to protect the display from scratches, for example, but is not intended to restrict the usability of the device. The protective film is placed on a carrier material to make it easier to apply. When producing a screen protector, the protective layer is quickly heated and then cooled again in order to harden the layer and achieve a high surface hardness. The surface hardness of the protective layer is measured in the smartphone sector with the help of the Mohs hardness scale , which shows the scratch strength of a material depending on the hardness and provides information about which material can destroy the screen protector. Often, however, display protection films advertised as "9H" do not even come close to the hardness of sapphire glass, as it is misleadingly compared to pencil hardness .
| Degree of hardness (H) | The destructive mineral | Comparable item in everyday life |
|---|---|---|
| 1H | Talk | |
| 2H | Gypsum / halite (rock salt) | |
| 3H | Calcite (calcite) | Plastic protective film |
| 4H | Fluorite (fluorspar) | Plastic protective film |
| 5H | Apatite | Conventional glass |
| 6H | Orthoclase | Steel knife |
| 7H | quartz | Gorilla glass |
| 8H | topaz | |
| 9H | corundum | Sapphire crystal |
| 10H | diamond |
species
One distinguishes between:
- Anti-shock / armor protection films: They are scratch-resistant and should even withstand hammer blows without damaging the glass underneath.
- Transparent screen protectors: They allow a view of the display that is as unchanged as possible.
- Anti-reflective screen protectors: These are intended to increase the readability of the device in sunlight or artificial light.
- Fully mirrored screen protectors: They become transparent when the display is switched on and can be used as a mirror when the display is switched off .
- Foil display protection for spraying: Here, a protective layer is sprayed on from a container. With this method you avoid cutting or sticking a film to create bubbles.
- Privacy film : You limit the viewing angle to approx. 30 degrees.
application
Screen protection films are used to protect displays and monitors of media end devices:
- Monitors
- Smartphone displays
- Notebooks, laptop and tablet computers