Full color LED display need to keep an eye on what points - in use Full color LED screen - knowledge

by:Xinyao LCD     2020-04-22
Full-color LED display, and other items are the same, in use inevitably encounter this or that questions and matters needing attention, the following manufacturer to explain why full-color LED display will appear in the phenomenon of mixed light and some need to pay attention to: the main points of the mixed light the integrity of the same kind of color is not the same brightness LED demand mix light, perhaps in accordance with the rules of discrete planning plug light figure to plug the lamp, in order to ensure the consistency of the whole screen brightness of each color. This process if present questions, will display brightness inconsistent phenomenon, a direct impact on the LED display screen display function. Manipulation of the good for vertical degree of upright type LED lamp, there should be meet when a furnace technology to ensure that the LED is perpendicular to the PCB. Any error will affect the has set a good LED brightness uniformity and brightness of color piece. Virtual welding manipulation of full-color LED display at present LED is not bright, often have to surpass 50% probability for the various types of virtual welding, such as LED tube feet virtual welding, IC pin virtual welding, welding and row needle row, etc. These questions of improved process improvement requirements strictly and strengthen the quality inspection to solve. The oscillation test before delivery also can yet be regarded as a good inspection method. The wave soldering temperature and time are required to strictly control good wave crest soldering temperature and furnace moment, advocate for: preheat temperature 100 ℃ + / - 5 ℃, the highest do not exceed 120 ℃, and the requirement of preheating temperature increasing is smooth, the welding temperature is 245 ℃ + 5 ℃, welding time claims not surpass for 3 seconds, after furnace oscillation of avoid by all means or impact of LED, until the recovery room temperature state. Crest welder to regularly check the temperature parameters, which is LED by the characteristics of the resolution, the temperature of the overheating or shake will directly damage the LED or LED quality risk, particularly for small size, such as 3 mm, round and oval LED.
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