Common cathode LED display will change the current market structure


Not long ago, United Huiye Technology launched the common cathode LED display power supply technology, which attracted great attention in the market. The excellent performance of energy saving of 75% also attracted inquiries from new and old customers. In response to the requirements of customers, now let Xiaolian will take you to learn more about the advantages of this common cathode LED display black technology. Through precise power supply control technology to reduce system power consumption, optimize product performance, and provide customers with more market-competitive common Yin LED display! 1. What is a common cathode LED display? "Common cathode" refers to the common cathode power supply method. The common cathode LED display adopts separate power supply for R, G, and B, and accurately distributes the voltage and current to the red, green, and blue lamp beads. The current passes through the lamp beads and then to the negative pole of the IC. The voltage drops, and the conduction internal resistance is small. 2. What is the difference between common cathode/common anode LED displays? (1) The power supply direction is different: the common anode LED display current flows from the PCB board to the lamp bead, and the RGB lamp bead is uniformly powered, which increases the forward voltage drop of the circuit; the common cathode LED display current first passes through the lamp bead and then to the negative electrode of the IC. The forward voltage is low and the conduction internal resistance is small. (2) The power supply voltage is different: the common anode LED display usually supplies a uniform power supply with a voltage higher than 3.8V (such as 5V) for the red, green, and blue lamp beads, and the power loss is large; the common cathode LED display is based on the red, green The actual voltage required by the three chips, blue and blue (the voltage of the red light bead requires about 2.5V, and the voltage of the blue and green light bead requires about 3.8V). Separate and precise power supply, less power loss, and much less heat generated during the work of the LED display.

3. Why does the common cathode LED display generate less heat? Through the comparison of the common cathode and common anode power supply methods above, we know that the common cathode LED display consumes much less power than the common anode LED display, but the common cathode LED display has much lower heat than the conventional common anode LED display. The follow-up United Huiye LED module part will adopt the aluminum bottom shell design, the heat on the PCB board will be directly transferred through the aluminum, and the heat generated by the light-emitting chip and the driver IC will be dissipated directly through the aluminum bottom shell, with small thermal resistance and good heat transfer. The area is large, and the entire aluminum bottom shell is the heat sink of the LED chip. The bottom shell is made of die-cast aluminum alloy, and the flatness and consistency of the LED display are also greatly improved, and the product weight is reduced on the premise of ensuring the hardness and strength of the product. , saving materials. After the service life of the LED display is over, the aluminum alloy material of the bottom shell can be recycled and reused, reducing the environmental load.

Aluminum alloy products have excellent oxidation resistance and strong environmental adaptability, and they will not age for a long time in any environment. The die-casting aluminum alloy material also makes the product have sufficient anti-electromagnetic wave interference and radiation capabilities, meeting the highest level of anti-radiation standards for LED displays in first-tier markets such as EU EMC Class B and FCC in the United States, and improving the international competitiveness of the product. However, the conventional plastic bottom case has poor heat dissipation, and is prone to aging, cracking and deformation after long-term use in harsh external environments, which affects the flatness and service life of the LED display.

Another disadvantage of the plastic bottom case is that it is made of plastic, which is difficult to effectively prevent electromagnetic wave interference and prevent its own electromagnetic waves from interfering with the surrounding environment, which may cause occasional disconnection of peripheral electronic devices. 4. Where does the common cathode LED display save money? (1) Save electricity costs and save operating costs: Precise power supply reduces power consumption of LED displays and reduces operating costs. (2) Saving installation investment cost: the temperature rise of low heat can also save cooling equipment such as air conditioners and fans.

(3) Save maintenance and repair costs: the follow-up fully enclosed die-casting aluminum bottom shell protects the components one by one, making the life of the LED display about twice that of ordinary screens. 5. What are the advantages of common cathode LED display? (1) Super heat dissipation, small power loss, low heat, low temperature rise of the screen, long life, and good display effect. (2) Super waterproof, dustproof, anti-corrosion, anti-ultraviolet, V0 fire protection standard, protection grade IP68, can be directly boiled in boiling water, can withstand high temperature inspection of 130 degrees, can be immersed in a 3-meter pool and work normally; In harsh environments such as extreme cold, scorching heat, high ultraviolet rays, etc., it will not deform, age, leak or catch fire.

(3) Galvanized lock design, easy front and rear maintenance, light and thin cabinet, small thickness of the whole screen, free of aisles and air-conditioning installation. (4) The cold light source has high brightness, ultra-high refresh rate, eliminates ghosting and no smearing, and the picture is more fresh and delicate, with high fidelity. (5) High efficiency and energy saving are more environmentally friendly, with a maximum energy saving of 75%.

Excessive body temperature and excessive power consumption of LED display screens have always been the key factors affecting the service life of LED display products, and the "common cathode LED display screen" upgraded by United Huiye Technology can solve these two problems very well. question. The actual measured data shows that for products with the same specifications and the same brightness, the screen temperature of the common cathode LED display is more than 20 degrees lower than that of the conventional common anode LED display, and the power consumption is lower than that of the conventional common anode LED display. LED display products are more than 50% lower. According to statistics, more than 3.5 million square meters of LED displays are produced globally every year, and based on the power consumption of 300 watts per square meter, it consumes 1.75 billion kilowatt-hours of electricity every year.

This is not counting the electricity consumed in the production process. If all common cathode LED displays are used, at least 725 million kilowatt-hours of electricity will be saved for the society every year. Lianhuiye Technology has been on the road to create high-efficiency LED energy-saving screens for a long time before reaching today. I hope that Lianhuiye's common cathode LED display can become the real LED display market in today's LED display market and can really bring huge economic benefits and value to customers. A powerful competitor! .

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