LED beads play a vital role in the LED display screen, but for the price of LED beads, many people do not understand, what makes the price of LED beads have a world-wide difference? Look at the introduction below to clearly understand, let's take a look at the price of LED beads and its influencing factors.
The price of different size LED is different. For example, the prices of 0603 LED and 1210 or 3528 LED differ greatly, while the prices of 1210 and 5050 specifications of LED differ by a step. Don't just pay attention to price when buying LED beads. It should be evaluated comprehensively from the following aspects in order to purchase high-quality and low-cost LED beads.
LED lamp bead chip
Chips include domestic and Taiwan chips and imported chips (including American chips, Japanese chips, German chips, etc.). Chips differ in price. At present, the most expensive American chips, followed by Japanese chips and German chips, the cheapest Taiwan chips, have a slightly worse heat dissipation performance. What chips are specifically used? What effect should we achieve? Make sure you know what you want before you buy it.
It is divided into resin package and silica gel package. Resin packages are cheaper. Everything else is the same. Silica gel packages have good heat dissipation performance, so the price is slightly more expensive than resin packages.
Color Consistency of LED
At present, there are many packaging factories in China. There are also thousands of families, big and small, of course, there are strong and weak points. There are many small packaging factories that do not have spectrophotometer, so they either do not spectrophotometer, or they are outgoing, so it is difficult to guarantee the quality. Without spectrophotometry, the color consistency of the LED is poor. The effect of lighting on the LED beads is not so good. Of course, the price difference is quite large.
Welding effect of LED
The assembly of LED beads is divided into manual welding and machine welding. Hand welding is to use soldering iron, using the most original method of welding. One of the products in this way is ugly appearance (the size of solder joint is not consistent with Fuzhou LED electronic display) and the other is poor electrostatic maintenance measures. Many LED chips are broken down, resulting in the phenomenon of bright or not bright when electrified. Machine welding is reflow welding, machine welding is different. Not only is the welded product beautiful in appearance (uniform size of solder joints, smooth solder joints, no flux residue, LED packaging is intact), but also there will be no chip burned by static electricity. At the same time, the position and direction of the LED are more beautiful. This can be seen directly from the appearance.
FPC calendering copper and copper coating two kinds. Copper cladding is cheaper and calendered copper is more expensive. The welding pad coated with copper sheet is easy to fall off when bending, but the calendered copper will not. Specific use of which material FPC depends on the salesman himself according to the use of the environment to make decisions.
Has FPC been certified by environmental protection and UL? Whether there are patents for LED, etc. No, it's cheap. Certified and patented products are more expensive.
Different brightness of the LED price is different. The price difference between ordinary brightness and high brightness LED is quite wide. Therefore, when purchasing, we must clearly know what brightness we need, so that we can accurately locate our products.
The colours are different. Prices are different. The price of red and green is higher than that of other colors because of the difficulty of color matching and color separation. The color separation of red, yellow and blue is easier, and the consistency is better, so the price is a little cheaper. Special colors such as purple and Brown are the most expensive because of color matching.