Liquid crystal display screen with visual angle control function

Abstract

The invention discloses a liquid crystal display screen with a visual angle control function, which comprises a backlight unit used for realizing light deflection, an optical element which is detachably connected with the top end of the backlight unit and used for improving the visual effect, and a display element fixedly connected with the top end of the optical element. The surface of one side of the first backlight piece in the backlight unit is processed into a plurality of small inclined plane structures, the light of an LED is deflected, and the light visual effect of the LED lamp is improved through the optical element, so that the main light-emitting angle of the display element deviates from the normal direction, the included angle between the observation view angle of a pilot and the main light-emitting angle of the display part is reduced, and the situation that the pilot cannot see information displayed on the screen clearly due to the fact that the observation view angle of the pilot deviates from the normal and the brightness attenuation is large is avoided.

Description

technical field [0001] The invention relates to the technical field of aviation display modules, in particular to a liquid crystal display screen with viewing angle control. Background technique [0002] The application of liquid crystal display in daily life is more and more common, but the main viewing angle of most display devices is perpendicular to the normal direction of the liquid crystal screen. The main viewing angle of the screen deviates from the normal line, which is convenient for pilots to observe. In addition, because the environment of the aircraft is more complex and changeable during the flight, sometimes the temperature inside the aircraft can be as high as 70°C. In addition, the heat of the backlight itself will affect the LCD module. Reliability has a big impact. [0003] The LCD screen is called the "eyes" of the pilot. When the aircraft is flying at high altitude, the light from the external environment with a large viewing angle will pass through the...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a liquid crystal display screen with viewing angle control to solve the problem that the pilot's viewing angle deviates from the normal line and the brightness attenuation is large due to the limitation of the space position of the aircraft cockpit, so that the pilot cannot clearly see the information displayed on the screen. question

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