How to identify the low-cost trap of LED indoor full-color display?
Date: 2019-11-11
Why must we use high quality lamps? Where is the so-called high quality lamp? How to identify the low-cost trap of LED indoor full-color display? Next, please see the detailed analysis.
1, look at the bracket
At present, the mainstream bracket metal of the market lamp has copper-plated silver and iron-plated silver. Although the two metals have only one word difference, there are great differences in electrical conductivity, thermal conductivity, corrosion resistance and price. In the process of using the outdoor LED display, it is often faced with harsh environments such as rainy days and sunny weather. This requires the device to have good performance in order to withstand the loss of the outside world. It has strong corrosion resistance, good electrical conductivity and thermal conductivity, which can make the device have the advantages of longer life, better heat dissipation and less light decay. Through comparison experiments, we can conclude that the performance of copper stents is much better than that of iron stents. However, the price of copper brackets is 10 times or more than that of iron brackets. To this end, many manufacturers ignore the quality of the device, only pursue low cost, high return, and choose iron brackets as raw materials, so there will be so many "low-cost devices" on the market.
2, identify the bonding wire
The LED lamp needs to conduct the chip and the pin as a current path through the connecting wire, and the bonding wire acts as the connecting wire. As with the stent alloy, the bond wire is also an important part of the device, and its quality directly affects the quality of the lamp. The most commonly used bond wires for manufacturers are copper wire, alloy wire and pure gold wire. Let's compare the differences between the bonding wires of the three metals.
Pure gold wire is better than copper wire and alloy wire. It is more inert, and it is superior in oxidation resistance, back pressure resistance and manufacturing process. It is the best choice for LED device materials. However, due to the high purity of gold resources, the price is high, the price of gold wire is 10 times that of copper wire, and the price of alloy wire is between gold wire and copper wire. Therefore, in order to get better quality LED devices, the price is certainly not so cheap.
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