I heard that many children's shoes have recently been squatting at the price of LED devices, and they have bought lights to decorate the store. But in a few months, there was a dead light phenomenon that seriously affected the image of the store. Xiaobian tells everyone here: Please be careful of the LED "low price trap"!
The so-called "light is the soul of the screen", in order to have a good quality display, you must have a good LED device, and behind the high-quality LED device, it is inseparable from the choice of device materials. As a key material for the device, the alloy and bond wires are essential!
Let's let Xiaobian take a few tricks for everyone, so that you can easily choose good LED devices!
The first trick: look at the bracket
At present, the mainstream stent metals in the market are 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. Strong corrosion resistance, good electrical conductivity and thermal conductivity can make the device have the advantages of longer life, better heat dissipation and less light attenuation. Through comparison experiments, we can conclude that the performance of copper brackets is much better than that of iron brackets. 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.
The second measure: 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 advantages and disadvantages directly affect the quality of the lamp bead. 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.
The third measure: look for the brand
Speaking of this, many students may say that I have no tools, how to look at the brackets and sutures?
It makes sense. Ready, Xiaobian wants to enlarge the move! The most straightforward and rude way is to look at the brand! Nowadays, the LED market is mixed, and many manufacturers are shoddy and often use low-priced and inferior products to make consumers fooled. But in fact, if you want good quality, don't pursue low prices, because the cost price is there, no one can escape!
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