Visual angle setting system and method for liquid crystal display screen

Abstract

The invention provides a visual angle setting method for setting the visual angle of a liquid crystal display screen of electronic equipment. The method comprises the following steps of: acquiring a face identification reference; receiving a preset visual angle of the liquid crystal display screen; identifying a face matched with the face identification reference in a current image shot by a pickup device of the electronic equipment; calculating the angle between a connecting line of the central point of double eyes of the identified face and the central point of the liquid crystal display screen and the vertical line of the liquid crystal display screen; calculating the deflecting angle of liquid crystal molecules of the liquid crystal display screen according to the angle and the received visual angle; calculating a voltage value applied to the liquid crystal molecules of the liquid crystal display screen according to the deflecting angle; and applying voltage to buses at two sides of the liquid crystal display screen according to the voltage value so as to change the visual angle of the liquid crystal display screen. The invention also provides a visual angle setting system. According to the method and the system disclosed by the invention, the visual angle of the liquid crystal display screen can be set according to the personalized requirements of a user.

Description

technical field [0001] The invention relates to an electronic anti-peeping technology, in particular to a system and method for preventing peeping by changing the viewing angle of a liquid crystal display. Background technique [0002] Liquid crystal display is a new type of information display media that developed rapidly in the world in the late 1980s. In just a few decades, it has rapidly grown into the mainstream product of flat panel display and has been widely used in the field of information display. Most electronic products have LCD screens, such as mobile phones, LCD TVs, computer LCD monitors, PDA (Personal Digital Assistant), ATM (Automatic Teller Machine) machines, etc. The product application fields involved include financial securities, sports, airports, railways, stations, commercial advertisements, post and telecommunications, and many other fields. [0003] There is a problem with the viewing angle of the LCD screen, that is, when the line of sight is withi...

AI Technical Summary

Problems solved by technology

[0003] There is a problem with the viewing angle of the LCD screen, that is, when the line of sight is within the range of the viewing angle, the content displayed on the LCD screen can be clearly seen, but when the line of sight exceeds the range of the viewing angle, the content displayed on the LCD screen cannot be clearly seen. See what is displayed on the LCD screen

When the viewing angle of the LCD screen is too small, as long as the user's line of sight is slightly misaligned, the content displayed on the LCD screen may not be clear, which will affect the user's sensory experience.

And when the viewing angle of the LCD screen is too large, because the content displayed on the screen can be clearly seen from all angles, the confidentiality of information is deteriorated.

For example, when a person utilizes an ATM to inquire about the balance in his bank card, if the viewing angle of the liquid crystal display of the ATM is too large, other people standing near the ATM may peep into the bank card. The balance information of the bank card will bring security risks to the holder of the bank card

For another example, if the viewing angle of the liquid crystal display screen of a certain mobile phone is too large, then when the user of the mobile phone utilizes the mobile phone to edit or check the short message, other people standing on the user's side may peep into the text message in the short message. private content

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