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Analyze The New Trend of LED Display Power Supply Development

"The future development direction of LED display power supply must be toward high PF value, high efficiency, multiple input and output protection, EMC standards, etc." Smaller, the power density will become higher and higher, and the reliability will continue to improve.

From December 14th to 15th, the "2020 High-tech LED Annual Meeting" titled by Zhaoyuan Optoelectronics with the theme of "Displaying the right and left source lighting looking for opportunities" was grandly held at the Hyatt Hotel in Shenzhen Airport.

As an annual event in the LED industry, this annual meeting has received strong support from more than 40 companies in the LED industry chain and flat panel displays. Nearly 1,000 industry professionals have signed up for the event, and there is a huge flow of people on site.

In the special display products and applications titled by Lehman Optoelectronics, Southland Sales Director Chen Haojie delivered a keynote speech on "New Trends in the Development of LED Display Power Supply". According to Chen Haojie, although the power supply accounts for only 3%-5% of the display cost, as the "heart" of the LED display, in order to ensure the stable operation of the display, its reliability requirements are very high.

Analyze the new trend of LED display power supply development

In recent years, with the gradual maturity of LED display technology and the rapid decline in cost, LED displays, especially small-pitch displays, have maintained a rapid growth trend. The size of the display power supply market has also increased vigorously.

Chen Haojie believes that although the scale of the LED display market will decline in 2020 due to the epidemic, as the market gradually recovers, the power supply market will continue to grow rapidly in the future following the overall development of the display.

"At present, the focus of display power supply is reliability + cost-effectiveness." Chen Haojie said, and reliability and cost-effectiveness are mainly considered from the power factor, efficiency, input protection, output protection, size and EMC technical parameters.

According to the different application classification, the display screen also has different requirements for the power supply.

According to Chen Haojie, the power supply inside the die-cast aluminum box has high efficiency and high power density, which requires relatively high MOS and electrolytic capacitors in the power supply.

However, transparent screen products require the power supply to be made into a slender power supply. The narrower the power supply is, the better the light transmittance of the screen body can be made, and the whole screen is more beautiful.

"Outdoor screen products require high maintenance costs, higher power supply reliability and longer life." Chen Haojie said that with the development of technology, various countries and regions have given relevant industry standards, which are certified in form Requirements, China requires CCC, Europe is CE, TUV, and the United States is UL. These certifications put forward higher requirements for some technical indicators of the power supply.

At the end of the speech, Chen Haojie said that the application of some new technologies and new materials is promoting the development of display switching power supply technology. Such as synchronous rectification technology and magnetic integration technology, the application of silicon carbide materials, gallium nitride materials, etc.

The 2020 high-tech LED annual meeting, named by Zhaoyuan Optoelectronics, lasted for two days. More than 30 corporate representatives gave wonderful keynote speeches on hot topics such as Mini/MicroLED, UVLED, small-pitch LED, smart lighting and health lighting. More For information on the 2020 Gaogong LED Annual Conference, please pay attention to the follow-up report of Gaogong's new display!