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The Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences announced in Changchun on November 14 that after more than 10 years of scientific and technological research, they have successfully developed the world's first "integrated three-in-one" LED display. This new technology will change the current world LED display market dominated by "surface mount three-in-one".

It is reported that the core technology of this LED display is the "point-by-point uniform correction technology for brightness and color of LED display suitable for large-scale batch production" with completely independent intellectual property rights. This achievement has overturned the previous international design ideas for LED display screens and made China stand at the forefront of the world's LED display industry for the first time.

According to industry insiders, the "surface mount three-in-one" LED display screen, which currently dominates the world market, has the following defects: the LED display screen using the surface mount process has to go through two processes, single tube packaging and secondary welding, during the production process, and the temperature requirements for secondary welding are relatively strict. Too high temperature can easily damage the tube core, and too low temperature can easily cause cold solder joints. Secondary welding has very high requirements for equipment accuracy during the production process. The welding temperature, the alignment accuracy of the placement machine, the welding materials used, the thickness of the stencil, etc. all have a great impact on its reliability.

Keywords：LED Reference address：New LED production technology

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