Can the brightness of LED transparent screen be adjusted?

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    • Can the brightness of LED transparent screen be adjusted?

    26 views admin 2025-05-23

    • The brightness of LED transparent screen can be adjusted, which is crucial to ensure high-quality visual presentation and energy efficiency management. There are various ways to adjust the brightness of LED transparent screen, mainly including the following methods
    • 1. Hardware control
     
    • Hardware control usually changes the brightness of LED by adjusting the current flowing through it. Specifically, the adjustment of the current can accurately control the brightness of LED. At the hardware level, this process can be achieved through circuit design and controller. The relationship between current and LED brightness is roughly as follows:
     
    • Ordinary LED tube: The continuous task current is about 20 mA, and the brightness of LED is basically proportional to the current flowing through it.
     
    • Duty cycle: In a cycle T (T=Ton+Toff), duty cycle =Ton/T. Increasing Ton increases the average current flowing through the LED lamp and increases the brightness of LED; conversely, reducing Ton reduces the average current and reduces the brightness of LED.
     
    • The hardware control method has the characteristics of fast response and high accuracy, and is suitable for occasions with high requirements for brightness, such as performing arts stages and indoor exhibitions.
    • 2. Software control
     
    • Software control is more flexible. It changes the brightness by changing the PWM duty cycle of the LED transparent screen driver. Enable the brightness adjustment function in the display control system. Users can change the brightness of the LED transparent screen by adjusting the corresponding settings according to conditions such as ambient light, internal needs or time factors.
     
    • Specifically, the software adjusts the brightness in a 256-level adjustable way, which can meet the brightness requirements in different environments. For example:
     
    • Indoor environment: Since there is no direct sunlight and it is relatively dark, you don’t need a very high brightness to see the screen content clearly. The brightness of the LED transparent screen is recommended to be 1000 to 2000cd/㎡. In order to save energy and reduce visual fatigue, the screen brightness can be reduced.
     
    • Semi-outdoor environment: such as glass curtain walls such as 4S stores, shopping mall windows, and sales departments. The brightness of this type of environment is higher than that of indoor environments but lower than that of outdoor environments, so the brightness should be selected at around 2500 to 4000cd/㎡ to ensure the normal display effect of the LED transparent screen.
     
    • Outdoor environment: Due to long-term sunlight exposure, the screen cannot be seen clearly in strong light environment, so the brightness of LED transparent screen should be increased to ensure the clarity of screen content. The brightness of transparent screen should be around 4500 to 5500cd/㎡. In cloudy days or at night, the screen brightness can be lowered as needed.
     
    • Software control makes the brightness adjustment of LED transparent screen more intelligent and automatic. In addition, using software to adjust brightness has the following advantages:
     
    • Easy operation: Users can adjust the brightness through a simple software interface without complicated hardware operation.
     
    • Energy saving and environmental protection: Reasonable brightness setting helps to reduce energy consumption, extend the service life of the display, and reduce the burden on the environment.
     
    • 3. Automatic adjustment
     
    • Automatic brightness adjustment is an intelligent adjustment method that adapts to the ambient brightness. It uses light sensors and other devices to monitor the changes in ambient light in real time, and automatically adjusts the brightness of the LED transparent screen through the control system to maintain the best display effect. Automatic brightness adjustment has the following advantages:
     
    • Intelligence: No human intervention is required, and the automatic brightness adjustment can be automatically adjusted according to the changes in ambient light to maintain a stable display effect.
     
    • Flexibility: Applicable to various complex ambient light conditions, it can ensure the best display effect of LED transparent screen in various scenes.
     
    • In short, through hardware control, software control and automatic adjustment, the brightness of LED transparent screen can be flexibly and accurately adjusted to meet the needs of different environments and scenes.
       
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