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Important indicators affecting the quality of LED display

Date: 2015-06-11
Browse the number: 45

  As we known  want to make a normal bright LED display, LED lamp bead is indispensable.LED lights use the largest number in the full-color LED display, every square metre might have thousands or even tens of thousands of LED lights.LED lamp bead directly determine the performance of full color LED display screen display and color saturation and clarity.Next, will see together with united di what are the important index of the quality of LED lamp bead.
  First, full-color LED display screen brightness
  The brightness of the LED lamp bead determines the brightness of the full-color LED display, LED lamp bead brightness is higher, the greater the allowance of using current, to save electricity, to keep the LED lamp bead is good stability.Values LED lamp bead has a different point of view, in the case of chip brightness is set, the smaller the Angle, the LED is more bright, but the smaller screen view.General should choose 100-110 degrees of LED lights, to ensure the full color LED display enough perspective.
  Second, full-color LED display failure rate
  LED display is composed of tens of thousands or even hundreds of thousands of set of red, green, blue three kinds of LED lights.Lights, the failure rate of aging even will not higher than one over ten thousand 72 hours.
  Three, full-color LED display attenuation characteristics
  LED lights use increase brightness with time will slowly decrease.LED lamp bead light attenuation speed and LED chips, auxiliary materials, packaging process has certain relevance.In general, after 1000 hours, 20 milliampere light test at room temperature, the red LED lamp bead attenuation should be less than 7%, the attenuation of blue, green LED lamp bead should be less than 10%. The red, green, and blue attenuation of the consistency of full color LED display has great influence on the white balance in the future, will affect the display fidelity of the display screen.

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