What are the characteristics of mirror mask and peep-proof film?

Mirror film originated in Japan. When the backlight of the main screen is turned off, the protective film acts as a mirror. When the backlight is turned on, characters and images can be displayed normally through the film. The film is divided into 5 ~ 6 layers, one of which is treated by aluminum evaporation. The mirror film uses this layer to reflect external light to realize the mirror function. The anti-peeping film adopts the unique ultra-fine shutter optical technology in the world, so that the information displayed on the screen can be specially read by users. It is a semi-rigid plastic film covering the screen, which is mostly used in notebook computers and can effectively protect business secrets and personal privacy. The anti-peeping film adopts the unique patented MICROLOUVER optical technology in the world, so that the information displayed on the screen is specially for users to read in front, and the visual area is 60 degrees. Anyone who watches from both sides can only see the dark picture. The voyeuristic visual area is 60 degrees, that is, only darkness can be seen from the left and right 30 degrees (invisible beyond 30 degrees means invisible beyond 30 degrees from the leftmost screen on the left and invisible beyond 30 degrees from the rightmost screen on the right). Effectively protect business secrets and personal privacy. Whether it is work, study, communication or entertainment, it makes the use of computers and mobile phones more free. Help the company's senior business personnel, lawyers, consultants, financial personnel, etc. to avoid business losses caused by screen information leakage when using computers. With the anti-peeping film of notebook computer, you can do whatever you want in the office, on the road, in public places and in any environment. The anti-peeping film of the invention is washable, reusable and convenient to install and take. Mostly used in notebook computers. It is a semi-rigid plastic film covering the screen, about 1mm-2mm thick. The main function is to reduce the display angle of the screen. Simply put, people around you can't see your screen clearly, so it's named anti-voyeurism. Mainly used for business notebooks, because these notebooks are for work, and this can prevent people from prying into your secrets. Generally, many commercial notebooks will have this option. Because domestic notebooks are mainly used for entertainment, manufacturers try to expand the display range to enhance the sharing of screen content by many people, so there is generally no such option.