LED display screens are widely used in advertising, media, stage and commercial display due to their high brightness, long life, rich colors and wide viewing angle. With the continuous advancement of energy-saving technology, the energy-saving characteristics of LED display screens have gradually become a key point in the development of the industry. The following is an analysis of the energy-saving principle of LED display screens:

Improvement of power supply: The power supply voltage of traditional LED display screens is usually 5V, but the actual pin voltage drop of the driver IC is generally around 0.6V, which means that there is a certain voltage difference, resulting in additional power consumption. By reducing the power supply voltage to a voltage drop closer to the LED light point, the power consumption can be significantly reduced. For example, reducing the power supply to 2.8V for red lights and 3.8V for green and blue lights can save the additional 1V*Iled power consumption added to the IC channel and achieve at least 15% energy saving effect. Let's take you to understand the driving and control methods of LED display screens.

Synchronous rectification technology: Synchronous rectification technology uses power MOSFETs with extremely low on-resistance to replace rectifier diodes to reduce rectification losses and improve the efficiency of DC/DC converters. This technology is particularly suitable for low-voltage, high-current rectifiers, which can effectively reduce the proportion of consumption in the output power and improve power efficiency.

AC/DC switching power supply technology: AC/DC switching power supplies using new half-bridge or full-bridge technologies can increase power efficiency to more than 90%. The application of these technologies can significantly reduce the energy consumption of LED displays while reducing the voltage to the optimal state to achieve high-efficiency power supply.

Optimization of driver ICs: Although the potential for energy saving starting from driver ICs is limited, because reducing the driving constant current voltage difference may bring new problems including cost, some IC companies are still exploring process improvements to achieve lower power consumption. Are LED billboards expensive? How high is the operating cost?

In summary, the energy-saving principle of LED display screens mainly involves the optimization of power supply, the application of synchronous rectification technology, the improvement of AC/DC switching power supply technology and the process optimization of driver IC. The common goal of these technologies is to reduce power consumption and improve energy efficiency to meet the market's growing demand for energy-saving products.

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How to make LED display screen more energy-efficient