Analyze LED display package
Release date: 2017-11-27 Source: led network share: 
In today's society, with the popularity of LED display applications, everyone knows the LED display screen, but the packaging process of the LED display lamp bead is not very well understood. Today, the LED display manufacturer Mingxinyuan Technology analyzes for everyone:
According to different packaging technologies, the packaging process of LED display bead can be roughly divided into three categories:
1. Dot matrix package: The LED chips are formed into a matrix, soldered on a PCB board to form a module, and then connected with external devices. The advantages are good flatness, high reliability and excellent protection level. The disadvantage is that the production process is slightly complicated and the material quality is high. Can be used for outdoor display and indoor display, generally used for display with density greater than P3.
2. In-line package: the bracket is used as the main material of the package, one end is a spherical structure for placing the lamp bead, and the other end is a pin for inserting on the mold. The in-line packaged device is mainly used for outdoor display products with a pitch of more than 8mm. The advantage is that the brightness is high, and it is easy to achieve waterproof and dustproof. However, the disadvantages are also obvious, and it is difficult to achieve high-density display.
3. Surface-mount package: The biggest feature is high degree of automation, can be directly used in SMT high-speed placement machine, and has advantages in the production process of high-density display, so it is mainly used for high-density indoor display. The advantage is that the color consistency is better, but it needs to be strengthened in the degree of protection.
The small-pitch LED display screens, which are mainly used in the indoor field, generally use surface-mount packages, because the number of beads to be processed increases geometrically with the pitch reduction, and the surface-mount package can be automated using a high-speed placement machine. produce.
As the pixel pitch of the LED display is reduced, the number of lamp beads per unit area is increasing, which makes the proportion of the lamp bead in the whole screen increase. According to our calculations, in the small-pitch LED display P1.9 and smaller pitch models, the cost of lamp beads has reached more than 70%.
It is worth noting that the price difference between different levels of components is very large, up to double or even several times. Therefore, the display screens of the same specifications of different enterprises often have different costs and prices, such as the small P2.5 specifications of Mingxinyuan. The distance LED display adopts high-end components such as imported lamp beads and driver ICs. The price per square meter can be twice that of the same specifications of low-end components.
At present, among the core components of LED display, the high-end market of chips and packaged devices with the highest technical content is still occupied by foreign manufacturers, and the low-end products belong to the main market of Chinese enterprises; the driver ICs and PCB boards with slightly lower technical barriers The degree of localization is higher. We believe that the mainland LED display industry chain enterprises are rapidly catching up with foreign leaders in terms of both production capacity and technological advancement. With the rapid rise of China's LED display industry chain, the localization of various components is becoming higher and higher. .
With the improvement of the technology and production capacity of domestic packaging companies, the localization of packaging devices for LED displays will be promoted in the next few years, which will effectively push smaller products to reduce costs and enter the market, replacing traditional indoor display technologies. With the rapid expansion of market cakes, overseas packaging faucets are also expected to enter the field, forming a benign competition in the packaging device market, promoting technological progress and cost reduction.
Label: Analyze LED display package
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