Drive LED display into the "common negative era"?
What is a common cathode LED display?
“Common cathode” refers to the common cathode power supply method. The common cathode LED display adopts the power supply of R, G, and B separately, and accurately distributes the voltage and current to the red, green and blue lamp beads. The current passes through the lamp beads and then goes to the negative pole of the IC. The forward voltage is reduced, and the on-resistance is small.
What are the advantages of “common negative” products?
In recent years, as LED displays have gradually entered a mature stage, the requirements for products have become higher and higher, especially in terms of reliability, service life and display consistency. The common cathode power supply technology has advantages in these aspects. It can reduce the supply voltage of red LEDs to reduce system power consumption, lower the temperature of the screen, and enable electronic components to have higher reliability and longer life at relatively low temperatures. more advantages in application. At the same time, integrating other energy-saving technologies can more effectively maximize energy-saving.
The energy saving of LED display screens has always been the focus of the entire industry, especially for the owners of outdoor fixed LED display screens who are “big power consumers”. Because of their long-term use, energy saving can save costs for customers, and also It is more in line with the development needs of the general environment, and in the long run, it is more cost-effective.
Why is “common yin” only on fire now?
As we all know, the maturity of any new technology and new product industry chain needs to go through a certain process, especially the industry chain of LED display products including driver IC, lamp beads, PCB, power supply, packaging, supporting facilities and other links. The same is true for negative LED display products. This is also the reason why “common cathode” products have long been available, but they have not been effectively promoted. Instead, the current common cathode LED display industry chain has gradually developed and the products and technologies have become more stable. It has become popular again. In the first half of 2019, many LED companies in the upstream and downstream of the industry chain launched “common cathode” energy-saving LED display products and related accessories.
Drive LED display into the “common negative era”?
At present, in the market, we can see that many chip manufacturers have launched corresponding common cathode chips; LED packaging manufacturers have launched lamp beads with common cathode solutions; power supply manufacturers have also launched corresponding power supplies; in PCB design, due to the high integration of common cathode solutions , which reduces the number of components and simplifies the design. Therefore, the PCB factory has also launched products with the corresponding common cathode solution. The common cathode industry chain is becoming more and more mature, and jointly accelerate the development of the “common cathode” LED full-color display market!
