The working principle of digital menu display mainly includes electronic luminescence, light transmission, voltage control and signal processing. Digital menu display usually uses LED (Light Emitting Diode) as the light-emitting element. The LED device generates light by passing current inside. Different colors of LED can achieve a variety of color display effects by combining them. There is a transparent glass or plastic panel behind the display screen. Through special process treatment, light can be transmitted through it, so that it can be presented on the front of the display screen for people to observe.
The digital menu display screen controls the brightness and vanishing point of LED light through the circuit system to realize the transformation and display of information. The voltage controller is responsible for controlling the size of the current and then controlling the brightness of the LED. When the current emitted is large, the LED will emit brighter light; when the current is small or zero, the LED will not emit light. By controlling the change of voltage, the image on the display screen can be controlled and transformed.
The driving modes of digital menu display screen include static driving and dynamic driving. The static driving method controls the brightness of each LED element by sending high and low level signals. The dynamic driving method uses row-by-row and column-by-column scanning to make the LEDs appear to light up at the same time. The dynamic driving method can use resources more efficiently and improve the display effect.
