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SMD three-in-one: advantages and disadvantages in the choice of LED display
  What is SMD technology? SMD is the abbreviation of Surface Mounted Devices, which means: surface mount device, which is one of the SMT (Surface Mount Technology) components. “In the initial stages of electronic circuit board production, via assembly was done entirely by hand. After the first automated machines were introduced, they could place some simple lead components, but complex components still required manual placement for wave soldering. Surface mount components were introduced about twenty years ago and have opened up a new era. From passive components to active components and integrated circuits, they have finally become surface mount devices (SMD) and can be accessed by pick and place equipment. Assembly. For a long time, people think that all the lead components can be finally packaged in SMD. SMD technology is widely used in LED displays.
     Three-in-one is a kind of LED display SMD technology, which means that SMT lamps of RGB three different color LED chip packages are packaged in the same glue body at a certain pitch. Full-color LED display using three-in-one SMD technology The screen has a large viewing angle, and the surface can be treated by light diffuse reflection, and the obtained effect is not granular, and the uniformity is good. In terms of color, the three-in-one full-color splitting color separation is easier than the three-in-one, and the color saturation is high. The three-in-one uses the entire surface to illuminate, so the overall color of the three-in-one is more uniform. The overall flatness of the three-in-one is easier to control. It has always been the standard technology used in HD LED displays.
 
     However, because of the complicated manufacturing process and difficult maintenance, the cost is very high, and it is generally used for high-end LED display products.
 
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