Determine the main method of LED large screen quality

Determine the main method of LED large screen quality

 LED large screen application is very extensive, due to frequent outdoor and other harsh environment, the failure rate is relatively high. Therefore, we need to choose a good quality products, this article for you to introduce the impact of LED large screen quality has the following major factors.

    First of all, LED lamp beads is a full color screen machine used in the largest number of key devices, each square meter will use thousands to tens of thousands of LED, because we have to choose good quality LED lamp beads;

    Secondly, LED is the main decision to determine the performance of the main screen, a direct impact on the audience's evaluation of the display;

    Again, LED in the overall cost of the display the largest proportion, ranging from 30% to 70%. LED selection determines the quality of the entire display more than 50%. If you can not choose a good LED, the other parts of the display no matter how good can not make up for the defects of the display quality.

    So, to determine the quality of LED large screen quality, mainly based on the following:

    First, led display failure rate

    As the full color display by tens of thousands or even hundreds of thousands of groups of red, green and blue LED composed of three elements, any color LED failure will affect the overall visual effects of the display.

    Second, led display antistatic ability

    LED is a semiconductor device, sensitive to static electricity, easily lead to electrostatic failure, so the anti-static capacity of the display life is essential. In general, LED body electrostatic mode test failure voltage should not be less than 2000V.

    Third, consistency

    Full color led creative display is composed of numerous red, green, blue LED composition of the yuan, each color LED brightness, wavelength consistency determines the brightness of the entire display consistency, white balance consistency, Chromaticity consistency. In general, the display manufacturers require device suppliers to provide 5nm wavelength range and 1: 1.3 brightness range of the LED, these indicators can be achieved by the device supplier through the spectrophotometer classification. The consistency of the voltage is generally not required.

    Four, brightness

    LED brightness is an important determinant of the brightness of the display. LED brightness is higher, the greater the use of current margin, to save power, keep the LED stability is good. LED has a different angle value, the chip brightness has been set in the case, the smaller the angle, LED is brighter, but the smaller the viewing angle of the display. Generally should choose 100 degrees LED to ensure that the display screen enough angle. For a different point spacing and different line of sight of the display, should be in brightness, angle and price to find a balance point.