What is a mobile phone privacy film
A privacy film is a protective film attached to the screen of a mobile phone to prevent others from peeping. For mobile phones without privacy film, the screen is a surround sharing screen, and you and the people around you can see the screen clearly. When you put the privacy film on the screen, it belongs to the exclusive privacy screen. It can only be seen clearly when facing the screen or within a certain angle range, and the screen information cannot be clearly seen from the side, thus effectively preventing personal privacy from being peeped.
Mobile phone anti-peeping film principle
Compared with the ordinary mobile phone film, the privacy film is equivalent to adding a privacy coating to the tempered film of the mobile phone, using the micro shutter optical technology. Its principle is very similar to the shutters in the office, and different look and feel can be achieved by adjusting the angle.
The design structure of the mobile phone privacy film is more dense, which can be understood as reducing the blinds by tens of thousands of times, and narrowing the viewing angle of the mobile phone screen through the angle control of the light. In this way, others must be at the same frontal angle as you in order to see the content on the phone screen clearly, and people outside the visible range cannot see it clearly.
If you pay attention, you will find that the display screen of the bank's ATM cash machine also uses this technology, and you can't see the screen information when you stand on the side of the cash machine.
Is the privacy film easy to use?
The content displayed on the screen can only be seen from the front with the privacy film attached. The more off-center the viewing angle is, the darker the screen will be until it becomes completely black. Therefore, the anti-peeping film does have a good anti-peeping effect. In addition, the price of privacy protection film is low, and many friends who pay attention to privacy protection have decided to start.
But its shortcomings are also obvious. The small "leaf" structure in the privacy film will block some light. Even if you view the screen from the front, you will still feel that the screen is much darker than before the film, and the brightness and color are much inferior. The mobile phone with the privacy film attached needs to manually adjust the brightness, and the power consumption increases significantly. Looking at the screen under long-term dim brightness conditions will inevitably affect your eyesight a little.
How to choose privacy film
The first requirement of a good privacy film is that the privacy effect is good, and the second light transmittance is high.
The privacy protection effect is related to the viewing angle. The smaller the viewing angle, the better the privacy protection effect. The viewing angle of the old privacy film is about 45°, and the privacy protection effect is relatively poor, which has basically been eliminated by the market. The viewing angle of the new privacy film is now controlled within 30°, that is, the privacy protection range is expanded, which can better protect personal privacy.
Post time: Sep-16-2022