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            濟南發光字最關鍵部件:LED燈珠

            頁面更新時間:2015-09-07 10:46 來源:未知 作者:admin 點擊:
             
            濟南發光字的最關鍵部件是LED燈珠。原因有三:
             
            The most important part of Ji'nan is LED lamp light. There are three reasons:
             
            第一,led是濟南發光字中使用數量最多的關鍵器件,每平方米會使用幾千至幾萬只led;
             
            First, the LED luminous characters used in Ji'nan is the largest number of key devices, per square meter will be thousands to tens of LED use;
             
            第二,LED是決定整屏光學顯示性能的主體,直接影響觀眾對顯示屏的評價;
             
            Second, LED is the entire screen optical display performance evaluation subject, directly affect the audience on the screen;
             
            第三,LED在濟南發光字 http://www.xubclan.com/ 整體成本中所占比例最大,從30%至70%不等。
             
            Third, LED luminous characters in Ji'nan overall costs accounted for the largest proportion, ranging from 30% to 70%.
             
            如何鑒別LED顯示屏燈珠優劣
             
            How to identify the advantages and disadvantages of LED display lamp
             
            一:看焊點。正規的led燈帶廠家生產的led燈帶是采用SMT貼片工藝,用錫膏和回流焊工藝生產的。
             
            A: look at the solder joint. LED lamp LED lamp with the regular manufacturers with using SMT SMD technology, used in the production of solder paste and reflow process.
             
            二:看FPC質量。FPC分敷銅和壓延銅兩種,敷銅板的銅箔是凸出來的,細看的話能從焊盤與FPC的連接處看出來。
             
            Two: the quality of FPC. FPC deposited copper and rolled copper two, copper clad plate of copper foil is convex and scrutiny to from the pads and the FPC connection point out.
             
            三:看LED燈帶表面的清潔度。如果采用SMT工藝生產的led燈帶,其表面的清潔度非常好,看不到什么雜質和污漬。
             
            Three: LED lamp belt surface cleanliness. If the LED light produced by SMT technology, the cleanliness of the surface is very good, can not see what the impurity and dirt.
             
            四:看LED燈用的芯片和生產工藝,用眼睛是看不出來區別的,要用老化設備和檢測設備如果你把幾個廠家的LED放在老化儀上用大電流老化24小時或者更長時間,你再去測量幾個廠家的LED亮度,看那個led發光強度衰減最小,衰減最小那個質量就最好。
             
            Four: read the chip and production process of LED lamp, with the eyes can not see out the difference, with the aging equipment and testing equipment if you put a few manufacturers of LED on aging instrument with high current aging for 24 hours or longer, you can go to the measurement of several manufacturers of the brightness of LED, see the LED light intensity attenuation is the smallest, lowest attenuation that quality is the best.
             
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