LED lamp bead mainly are the important indicators of quality

by:GKGD     2020-04-21
For full color LED display, LED lights, as the most critical components, the quality of the LED lamp bead on the LED display quality plays a very important decision function. Let's take a look at the LED lights, one of the important indices for quality! LED lamp bead quality important indicators mainly include: a, full-color LED display screen brightness LED lamp bead brightness determines the brightness of the full-color full color LED display, LED lamp bead brightness is higher, the greater the allowance of using current, kept LED lights to save electricity, stability is good. 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 degrees 110 degree LED lamp bead to ensure full color LED display enough perspective. Two failure rates full color LED display, full color LED display screen is composed of tens of thousands or even hundreds of thousands of set of red, green, blue three kinds of LED lamp bead. Lights, the failure rate of aging even will not higher than one over ten thousand 72 hours. Third, full-color LED display attenuation characteristic of LED lights, increase brightness will gradually decay over time. 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%. Red, green, and blue attenuation of the consistency of full-color LED display great influence on the white balance in the future, will affect the display fidelity of the display screen. The four, LED display antistatic ability due to the LED lamp bead is a semiconductor device, is sensitive to electrostatic, easily lead to static electricity failure, so the antistatic ability is very important to the life of the LED display. In general, the LED lamp bead pattern of human body electrostatic voltage test failure should not be less than 2000 v.
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