The Industry Chain Is Maturing, Driving LED Display Into The Common Cathode

- Jun 24, 2019-

Abstract: At present, many chip manufacturers can see the corresponding common cathode chips on the market; LED package manufacturers have introduced lamp beads for the common cathode scheme; power supply manufacturers have also introduced corresponding power supplies; PCB design, due to the common cathode scheme Highly integrated, the number of components is reduced, and the design is more simplified. Therefore, the PCB factory has also launched a corresponding product of the common yin scheme..... The common cathode industry chain is maturing, and jointly accelerate the development of the "common cathode" LED display market!

Since the LED display manufacturers of the common cathode power supply technology have been introduced by some LED display manufacturers at the industry exhibition at the beginning of this year, the excellent performance of 75% energy saving has attracted the attention of the whole industry chain. In fact, "common cathode" is not a new technology. In the early years, some of the screen enterprises in the industry have been widely used in national ministries and provincial key projects, and now with the industry chain and technology. The products are constantly maturing, stable, and cost-reducing, so that the "common cathode" LED display is truly in the public eye.


What is a common cathode LED display?


common cathode” refers to the common yin power supply mode. The common yin LED display adopts separate power supply of R, G and B to accurately distribute the voltage and current to the red, green and blue lamp beads. The current passes through the lamp beads and then to the IC negative pole. The pressure is lowered and the internal resistance is small.


What are the advantages of the “ common cathode” product?


In recent years, as LED displays have gradually entered a mature stage, the requirements for products are getting higher and higher, especially in terms of reliability, service life and display consistency. The common power supply technology has an advantage in these aspects. It can reduce the red LED supply voltage to reduce system power consumption, lower the screen temperature, make electronic components higher reliability and longer life at relatively lower temperatures, in ultra-small pitch and Mini/Micro LED More advantages in application. At the same time, it can be more effectively realized to achieve energy saving and greater integration by integrating other energy-saving technologies.


The LED display energy saving problem has always been the focus of the whole industry, especially for the outdoor fixed LED display owners of “large power consumers”, because of their long-term use, energy saving can save customers cost, More in line with the development needs of the big environment, in the long run is more cost-effective.


Why is " common cathode" only 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 industrial chain of LED display products including driver IC, lamp bead, PCB, power supply, packaging, supporting facilities and so on. The same is true for the negative LED display products. This is also the reason why the "common yin" product has been, but it has not been effectively promoted, but in the current common cathode LED display industry chain gradually developed, products and technology are more stable, once again hot.


In the first half of 2019, a number of LED companies in the upstream and downstream of the industry chain launched the “ common cathode” energy-saving LED display products and related packages:


In March, at the ISLE show in Guangzhou, Shenzhen Sancai Display launched a new energy-saving cold screen “three-color common cold screen series”. It is reported that the temperature of the product is reduced by 60% compared with the conventional screen, the temperature rise is effectively controlled, the screen body operation is more stable; the power saving is about 70%, the energy-efficient driving IC is reduced, the circuit driving loss is reduced, and the operating cost is reduced.


In June, Lusheng Optoelectronics teamed up with an important partner, Guangzhou Silicon Core, to launch a new product, the “Yinhe” series, with a small gap LED display. The product uses the new TOP1010 common cathode lamp and the silicon core independent intellectual property IC (SCL series), which is independently developed by Lusheng. It solves the high power consumption, coupling and “caterpillar” of the traditional common anode LED display. Defects such as "ghosting".


In June, JiChuang North launched a high-sweep common cathode product to reduce the use of driver ICs to achieve energy-saving effects.


At present, many chip manufacturers can see the corresponding common cathode chips on the market; LED package manufacturers have introduced lamp beads for the common cathode scheme; power supply manufacturers have also introduced corresponding power supplies; PCB design, due to the high integration of the common cathode scheme The number of components is reduced, and the design is more simplified. Therefore, the PCB factory has also launched a product corresponding to the common yin scheme..... The yin industry chain is maturing and jointly accelerates the development of the“ common cathode” LED display market!