LED unit board more accurate calculation method: length × height using a cell plate number plate = total number of units using the number of LED unit board such as: 5 meters long and 2 meters high P16 color led display uses several modules: LED display Long screen using cell plate number = 5 m ÷ 0.256 米 = 19.53125≈20 use a high number of units of LED display board = 2 m ÷ 0.128 米 = 15.625≈16 a LED display uses the total number of LED unit board = 20 × 16 a = 320 as a result of the LED lamp is a semiconductor device led module, sensitive to static electricity, caused by static electricity can easily fail, it is essential antistatic ability LED display life. Generally led module line, LED lamp beads body static mode test failure voltage of not less than 2000V. With increasing brightness LED lamp usage time will gradually decay. Decay rate of LED chips, auxiliary materials, packaging technology brightness LED lamp has a certain relevance. Generally, Sichuan led module, 1000 hours, 20 mA at room temperature after lighting test domestically led module, the red LED lamp beads attenuation should be less than 7%, blue and green LED lamp beads attenuation should be less than 10%. Red, green, blue attenuation consistency full color LED display great balance affect the future, and thus influence the display of the display fidelity. led module line _led high Jinliang photovoltaic modules _ provided by Jinan High Jinliang Optoelectronics Technology Co., Ltd .. Jinan High Jinliang Optoelectronics Technology Co., Ltd. (www.zhkyled.com) strong, credible, in Jinan, Shandong liquid crystal device industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the high Jinliang photoelectric and you hand into the brilliant, for a better future!