Led display in the market has been mature, in our life and work can apply to the led display, there are many landmarks plus led display, but also make the finishing point, the icing on the cake. The perfect match with the building shows the advanced technology and art of led display. But if the choice of led screen often appears problem, the picture quality is not high, even appears safety problem. It's not just that it's a bad thing, it's a terrible thing. So it's important to choose a good led screen. In order not to let consumers suffer from some bad manufacturers, we will talk about how to separate the advantages of led display.
Surface flatness
In accordance with the standards of conventional surface roughness to within + / - 1 mm, this is the purpose of is to ensure that the image is not distorted, local convex or concave leads to display the visual Angle of corner.
Color reducibility
Color led display is the most can reflect good or bad of a standard, color reducibility, namely the color of the display shows to maintain highly consistent with the colour of the source, so as to ensure the image sense of reality.
brightness
Indoor full color LED display screen brightness to above 800 CD/m2, outdoor full-color LED display screen brightness to above 1500 CD/m2, to guarantee the normal work of the screen, otherwise it will because the brightness is too low and can't see shown in the image. The brightness is mainly determined by the quality of LED core, so the quality of LED chip is very important.
Viewing Angle
The size of a screen that is directly determined by a visual Angle, the larger the better. The size of the visual Angle is mainly determined by the encapsulation of LED core.
White balance effect
The proportion of red, green and blue primary colors for 1:4. Lost. 16 will only show the pure white, a little deviation will appear a kind of imbalance, late effect is not good to use this is also an important factor.
There are no mosaics and dead spots
Mosaic is the small four squares that appear on the display screen, or the small four squares that are often black, namely the die group necrosis phenomenon, the main reason is the IC or the quality of the plug that is used in the display screen is not clear. The dead point refers to the single point that appears on the display screen, and the number of dead points is mainly determined by the quality of the pipe core and the improvement of anti-static measures of the manufacturer.
In addition to these, there is an important and necessary aspect of the led display: power, wire, and PCB panels. Poor quality of power supply can lead to overload of power, screen failure and even fire. The PCB board if the material is inferior, the coating is thin, the design is unreasonable, the process difference causes the phenomenon such as the copper wire to have the result of the hair to wait for the phenomenon to produce the circuit short circuit, become the source of the fire trouble. The quality of the wire in the market is uneven. The spool of many wires is copper clad aluminum, and the appearance of copper wire is actually aluminum alloy wire. This line is usually used for temporary use and cannot be used for regular products. Although formal led display manufacturer is not the material aspects of the problem, but also cannot ignore this problem, have bad manufacturers cannot be ruled out shoddy, disrupt the market, consumer fraud.