A must see guide for purchasing light-emitting diodes.P5 indoor LED Display

　　Nowadays, LED shopping malls have a wide range of prices, with varying quality. Many reasons are due to the fact that in Chinese shopping malls, the appearance of products is similar and there are no patents, so price wars have led to varying quality. We all want good prices and quality, but it's difficult to find such things in the mall. A certain engineer who has been engaged in LED packaging engineering research and development technology management work in multiple packaging factories since 2006, but has now separated from LED work, told us about the various tricks he has learned about working in LED bead packaging factories for about 8 years, hoping that we can open our eyes and choose good LED bead products. How to Make LED Beads: Taking the imitation of Lumen high-power as an example, LED beads are made through production processes such as solidification, soldering, gluing, cover lens gluing, spectroscopy, packaging, etc. Each link has different technologies, but technology is not the first thing. The quality of the raw materials is the first thing, and the raw materials determine the price. For example, for 1w of 35mil crystal beads, there are 0.2 yuan, 0.4 yuan, 0.6 yuan, 0.8 yuan, and above 1 yuan, etc, Their prices are all reasonable, there is no violent price, but they are made up of different raw materials. The reporter has worked as an engineer in the packaging factory, and has seen all kinds of raw materials, such as high-quality packaging factories and waste packaging factories. They have all been there before, and now they have exposed their material selection and prices to us. We hope it can be helpful. Why are the prices of LED light beads so different? Taking a chip with a 35mil wafer as an example. On the mall, there are 1w 35mil crystal beads priced between 0.2 and 0.4 yuan (mostly sourced from packaging factories and products that split light from scratch, usually defective), 35mil crystal beads priced around 0.6 yuan (usually made of fake crystal elements), 35mil crystal beads priced around 0.8 yuan (usually made of ordinary materials and not very good ones), and 35mil crystal beads priced around 1 yuan (usually made by packaging factories with good material selection and quality). The informant will inform us of the materials used and products produced by each packaging factory (taking the imitation lumen lamp beads as an example, the same applies to other lamp beads). The process of fixed crystal is tricky: fixed crystal is to fix the chip on the bracket, and the primary information used is the bracket and chip. Here we talk about the quality of the chip and bracket. LED bead holders are tricky: Currently, there are aluminum holders, brass holders, and copper holders available in shopping malls. Aluminum holders are the cheapest, with a 1w imitation lumen priced at around 0.06 yuan, brass around 0.12 yuan, and copper around 0.16 yuan. Aluminum brackets have the worst thermal conductivity, followed by brass, and red copper is the best (we pay great attention to the heat dissipation of the shell when selecting it, and the quality of the power supply is also important. The price of the shell and power supply is very high, and often the selection of LED lamp beads is getting worse, sacrificing the cost to the end). Currently, the lamp beads priced around 0.4 to 0.6 yuan in shopping malls are mostly made of aluminum brackets, 0.6 to 0.8 yuan are mostly made of brass brackets, and 0.8 to 1 yuan are mostly made of copper brackets. Even if it is a copper bracket, there are 40, 60, 80, 100, and other options for the silver, and the prices vary greatly, ranging from 0.13 yuan to 0.18 yuan. A basic price of around 0.8 yuan is made of 60 yuan of silver, while a price of 1 yuan is made of over 80 yuan of silver. Many packaging factories promise that the brackets made of red copper are actually brass or adulterated red copper.

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