1. What is the co-negative LED display screen?

"Common shade" refers to the common shade power supply mode. The LED display screen of common shade USES R, G and B to supply power separately, and accurately distributes the voltage and current to red, green and blue lamp beads.

2. What is the difference between common Yin/common Yang LED display screen?

(1) different power supply directions:

The LED display current flows from the PCB to the lamp bead, and the RGB lamp bead provides unified power supply, increasing the forward voltage drop of the circuit.The common negative LED display current first passes through the lamp bead and then goes to the IC negative electrode, which reduces the positive voltage and leads to small internal resistance.

(2) different supply voltage:

The LED display screen of gongyang will usually give red, green and blue lamp beads a voltage higher than 3.8v (such as 5V) for unified power supply, with large power loss.According to the actual voltage required by the three chips of red, green and blue (about 2.5v for the red bead and 3.8v for the blue and green bead), the LED display screen provides precise power supply with less power loss and much lower heat generated in the work of the LED display screen.

3. Why is the co-negative LED display lower in heat?

Through the above comparison of common-yin and common-yang power supply modes, we know that the electricity consumption of common-yin LED display is much lower than that of common-yang LED display, while the heat of common-yin LED display is much lower than that of conventional common-yang LED display.

Subsequent joint part will adopt the aluminum pan delta Asia LED module design, the heat on the PCB directly through the aluminum heat transfer, the luminous chips and driver IC heat directly to the outside heat dissipation by aluminum pan, heat resistance, heat transfer area is large, the whole is LED chip, heat sink, aluminum pan pan adopt the die casting aluminum alloy, the flatness and consistency of the LED display is also greatly improved, and ensure product hardness and strength under the premise of reducing weight, saving material.

After the service life of LED display, the aluminum alloy material of the bottom shell can be recycled and reused, with less environmental load.Aluminum alloy products have excellent oxidation resistance and strong environmental adaptability, which can be used in any environment for a long time without aging.Die-casting aluminum alloy material, also make the product has enough anti-electromagnetic wave interference and radiation ability, meet the * standard requirements of LED display anti-radiation in the first tier market such as EMC Class B of the eu and FCC of the United States, improve the international competitiveness of the product.

However, the conventional plastic chassis has poor heat dissipation, and it is easy to age and crack when used in the harsh environment for a long time, which affects the flatness and service life of LED display screen.Another disadvantage of the plastic bottom shell is that the plastic material is difficult to effectively prevent the interference of electromagnetic waves and its own electromagnetic waves from interfering with the surrounding environment, which may lead to the occasional loss of peripheral electronic equipment.

4. Where can we save money on the co-negative LED display?

(1) save electricity and operating costs:

Precise power supply reduces LED display power loss and operation cost.

(2) provincial installation input cost:

Low heat temperature rise can also save air conditioning, fan and other heat dissipation equipment.

(3) provincial maintenance cost:

The subsequent fully enclosed die-cast aluminum chassis protects the components one by one, making the LED display life about 2 times that of the ordinary screen.

5. Advantages of co-negative LED display screen?

(1) super heat dissipation, small power loss, low heat, low temperature rise screen, long life, good display effect.

(2) super waterproof, dustproof, anticorrosive, anti-ultraviolet, V0 fire standard, protection grade IP68, can be directly put in boiling water, can withstand 130 degrees of high temperature inspection, can be placed under 3 meters of pool to soak and work normally;In extreme cold, heat, high uv and other harsh environment, keep no deformation, no aging, no water leakage, no fire.

(3) galvanized lock design, easy maintenance before and after, light and thin box body, small thickness of the whole screen, can be free of access to the air conditioning installation.

(4) cold light source with high brightness, ultra-high refresh, eliminate ghost without trailing tail, make the picture more fresh and delicate, and high fidelity.

(5) high efficiency, energy saving and environmental protection, * 75% energy saving.

High body temperature and excessive power consumption of LED display screen have always been the key factors affecting the service life of LED display products, and "co-negative LED display" can exactly solve these two problems.The actual measured data shows that the screen temperature of the common-negative LED display screen is more than 20 degrees lower than that of the conventional common-positive LED display screen, and the power consumption is more than 50% lower than that of the conventional common-positive LED display screen.According to statistics, the world produces more than 3.5 million square meters of LED displays every year, which consumes 1.75 billion KWH of electricity per year based on the power consumption of 300 watts per square meter.That's not even counting the amount of electricity used in production.If all LED screens are adopted, at least 725 million kilowatt hours of electricity will be saved every year.We hope that in the future, the co-negative LED display will become an effective competitive product in today's LED display market that can really bring great economic benefits and value to customers!