LED Display Industry Chain's Development



For the composition of LED display Industry Chain, the core devices mainly include lighting chips, LED lamp beads, driver IC, multiple layer PCB, casing suite, display card, video control system, etc..The lamps cost is the highest of all components, the global output of lamps has reached 14 billion in 2014. Generally the lamps cost of small pitch LED display is more than 50% of the total cost, the second ones are the PCB for carrying lamps, display driver IC, control system and  power supply.
According to the different packaging technologies and applications, LED display lamps can be divided into three categories:
1. DIP package: the brackets are used as packaging materials, spherical structure is placed bulb at one end and the other end is pins, used to insert in the mould. DIP package is mainly used from outdoor with 8mm pixel pitch, its advantages include highbrightness, waterproof and dustproof. But the drawback is obvious: that is difficult to achieve high resolution displays.
2. Dot matrix packaging: make LED chips for matrix on PCB Board welding and forming module, then connect them to external devices. Here are the main advantages: smoothness, excellent protection and high reliability. Disadvantage is that production is slightly complicated and it need high requirements for quality of materials to achieve. This packaging technology is always used for LED screens with higher than P3 density from outdoor and indoor.
3. Surface mounting packaging: it comes with high degree of automation and can be directly applied to high speed SMT Mounter, which makes an edge in a high density production process. It is mainly used for high density indoor display. For this packaging way, the color consistency is good, but the biggest drawback is that the protection level is low.
Indoor small pitch displays are generally adopt SMD packaging devices, because the number of needed LED lamps will exponentially increase as the pitch narrowed, SMD packaging can be used for automated production with high-speed SMT machines. As the LED display pixel pitch narrowed, the quantity of lamp units will increase, which also rise the display cost. In addtion, the prices of different components have a large gap, so you can find that LED displays with same specifications but different brands have considerable variability in prices.
LED display industry chain has got the rapid development of both capacity and advanced technology, with the rapid rise of industry chain, various technology  of the components will become more and more mature. Currently, the LED display market of chips and packaged devices with the highest technical content are still occupied by European companies, and other low-end products are along with Chinese factories. As smaller and smaller pitch LED display board appears in the market, the applications gradually trends from outdoor to indoor in many different areas, which is expected to increase in the proportion of LED display application in all LED lndustry.

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