How to identify the advantages and disadvantages of LED display lamp beads?
Today's society, the rapid development of the case, outdoor LED large screen applications will be more and more widely, but the quality of uneven, leading to frequent accidents, then how do we judge the outdoor LED is good or bad?
In the LED display, the most important thing is the LED lamp beads, the lamp beads is good or bad is the impact of LED display quality. LED lamp beads is the most used in the full color screen machine the most important components, each square meter will use thousands to tens of thousands of lamp beads, lamp beads is also the decision of the whole screen optical display performance of the main, directly affect the audience evaluation of the display , Lamp beads in the overall cost of the display is also the largest proportion, ranging from 30% to 70%. The importance is immediately highlighted.
So how to identify the advantages and disadvantages of LED display lamp beads?
First: look at the chip and chip size, the chip is the quality of the lamp beads is the decisive factor, under normal circumstances the greater the stability of the chip, the higher the brightness, the better the heat. This is the most important, because the chip directly determines the color rendering index, brightness, anti-attenuation level.
Second: look at the glue and phosphor, generally good products will be imported glue, the package of the lamp beads by hand without deformation, low-quality glue will be a deformation or even cracking and so on.
Third: to see the bracket, the general situation for the silver-plated copper bracket bracket, silver plated copper bracket is the advantage of fast heat, you can better to the lamp beads heat, resistance is small. Some businesses on the market will use ceramic stents instead of silver-plated copper brackets, ceramic stent thermal conductivity is excellent
Fourth: see the brightness, that is, we usually say how much you can achieve the lamp beads LM (lumens), LM (lumens) is a measure of the brightness of the lamp unit
Fifth: to see whether the uniform color is uniform, the quality of the light beads are very uniform light, consistent color. Poor quality of the lamp beads will appear a lamp beads bright, a lamp beads dark phenomenon, luminous color mess is not uniform, there will be a clear dark area.
Sixth: see the packaging process, good quality LED lamp beads uniform color, colloidal consistency is good. This is inseparable from the good machinery and equipment, production machinery and equipment is a key factor, good equipment can ensure that the product in the various procedures on the stability and consistency, to protect the product yield.
In the field of LED display, the most important one is the brightness of the index, the brightness of the high demand, the heat will become a big problem, the heat is the LED field whether it is lighting or display is a relatively long problem. The major manufacturers have launched their own thermal solutions, the declaration of their own product cooling effect has become a hard target. Another reason is that with the small pitch LED research and development, junction temperature problem has always been difficult to solve.