LED lamp's effect for LED display screen
For Full color LED display, LED lamp beads as the most critical parts, LED lamp beads quality plays a very important role in determining the quality of the LED display.
First, LED lamp beads used in full-color LED display largest number per square meter, there may be thousands or even tens of thousands of LED lamp beads.
Finally, LED lamp beads directly determines the performance and color saturation and sharpness of full-color LED display.
An important indicator of the quality of the LED lamp beads:
First, full-color LED display brightness
LED lamp brightness determines the brightness of the full-color LED display, LED lamp beads higher the brightness, the greater the margin of the current, stable good save power consumption, keep the LED lamp beads. LED lamp beads have a different angle value, in the case of the brightness of the chip has been set, the smaller the angle, LED, the brighter, but the smaller the viewing angle of the display. 100 degrees -110 degrees LED lamp beads general should be chosen to ensure adequate perspective of full color LED display.
Second, the full color LED display failure rate
LED display by the tens of thousands or even hundreds of thousands of red, green, blue LED lamp beads. Even if the failure rate of the lamp beads aging 72 hours will not be higher than 1 in 10,000.
Third, the full color LED display attenuation characteristics
LED lamp beads with the use of time to increase the brightness will slowly decay. LED lamp brightness decay rate of the LED chip, auxiliary materials, packaging technology has a certain relevance. In general, 1000 hours, 20 mA at room temperature lighting tests, the red LED lamp beads attenuation should be less than 7%, blue, green LED lamp beads attenuation should be less than 10% of the red, green, blue attenuation consistency on LED display, full-color, white balance, thereby affecting the screen display fidelity.
, LED display antistatic ability
Since LED lamp beads semiconductor devices sensitive to static electricity, can easily cause static electricity failure, antistatic ability is critical to the life of the LED display. In general, LED lamp beads body static mode test failure voltage should not be less than 2000V.
Written by Anheer Melton
Melton Optoelectronics Co LTD