LED是全彩LED显示屏的最要害器件，相当于电脑的CPU.LED的选择现已选择了整个显示屏50%以上的质量。如果未能选择好LED,显示屏的其他部件再好也无法弥补显示屏质量的缺陷。由于 全彩LED显示屏http://www.ledky.com由上万甚至几十万组红、绿、蓝三种LED组成的像素点组成，任一颜色LED的失效均会影响显示屏整体视觉效果。一般来说，按工作经历，全彩LED显示屏在led显示屏开端设至极老化72小时出货前的失功率应不高于万分之三（指LED器件本身缘由致使的失效）。 LED is the key device for full color LED display, selection is now equivalent to the computer CPU.LED to choose the display more than 50% quality. If it fails to choose a good LED, other components display again good also cannot make up for the display quality defects. Composition due to pixel color display by tens of thousands or even hundreds of thousands of red, green, blue three LED composition, failure of any color LED display screen will affect the overall visual effect. Generally speaking, according to the work experience, was set in the display of the led the beginning of aging for 72 hours before shipping out of power should be not more than 3/10000 (referring to the failure of LED device itself reason cause).
LED失效一般包括以下三大类：短路（漏电）、开路、暗亮。短路（漏电）一般是由于模块电路中的冲击电流太大构成LED芯片功用发生改动，芯片漏电流增大致使；开路可以静电或其他缘由构成LED芯片被击穿；暗亮，一般是由于LED不恰当运用致使胶体里面进水汽，影响了全彩LED显示屏的光学效果。
LED failure generally include the following three categories: short circuit, open circuit (leakage), dark and bright. Short circuit (leakage) is due to the general module circuit in the impulse current is too large. LED chip function changes, chip leakage current increase in open circuit can be static or other reasons; LED chip breakdown; dark and bright, is generally due to the incorrect use of the colloidal LED water in the steam, affect the optical effect of LED.
关于LED失效问题。全彩LED显示屏首要运用计划启航，需要选好恰当的电路，从电路接口减少静电挟制，根绝大电流脉冲损坏LED的工作情况发生，需要计划合理的计划保护密封LED,根绝可以外力拉伤LED管腿的表象发生。
About LED failure in doubt. The primary use of plans to set sail, need to choose the appropriate circuit, the circuit interface reduce electrostatic force, put an end to high current pulse generating work damaged LED, plan to protect the need to plan reasonable seal LED, uprooting can force strain LED leg representation occurs.
其次在出产中注意合理运用LED的细节掌控：注意物料的投料运用合理的掌控，关于过期的物料一定要做防潮技能处置；注意防静电方法的严厉掌控，显示屏设备工厂应有超卓的防静电方法，专用防静电地、防静电地板、防静电烙铁、防静电台垫、防静电环、防静电衣、湿度控制、设备接地（格外切脚机）等都是根柢需要，并且要用静电仪守时检测；须严厉控制好波锋焊的温度及过炉时间。建议为：预热温度100℃±5℃，最高不跨过120℃，且预热温度上升需要平稳，焊接温度为245℃±5℃，全彩LED显示屏焊接时间建议不跨过3秒，过炉后切忌振动或冲击LED,直到恢复常温情况。
Secondly, in the production of attention to the rational use of LED control: pay attention to details of material feeding and using reasonable control, about expired material must do moistureproof skills disposal; attention to anti electrostatic method of strict control, anti - static method display equipment factory should have excellent, special anti-static, anti-static, anti-static floor iron, anti-static pad Taiwan, anti-static ring, anti-static clothing, humidity control, equipment grounding (especially cutting machine feet) are fundamental needs, and to detect electrostatic instrument shall be in strict punctuality; control the wave crest welding temperature and time of the furnace. Recommendations: preheating temperature 100 ± 5 ℃, the highest do not cross 120 ℃, and the preheating temperature rise to stable, the welding temperature 245 ± 5 ℃, welding time recommendations do not cross 3 seconds, a furnace to avoid the vibration or shock LED, until the resumption of normal temperature conditions.
波峰焊机的温度参数要守时检测，这是由LED的特性选择的，过热或不坚决的温度会直接损坏LED或构成LED质量风险，格外关于小标准如3mm的圆形和椭圆形LED;led显示屏在出现LED不亮时，一般有跨过50%概率为各种类型的虚焊致使的，如LED管脚虚焊、IC管脚虚焊、排针排母虚焊等。这些疑问的改善需要严厉地改善技能并加强质量查验来处置。全彩LED显示屏出厂前的高温文常温老化查验、振动查验也不失为一种好的查验方法。
The temperature parameter of crest welder should be punctual detection, which is selected by the characteristics of the LED, overheating or not determined temperature will directly damage the LED or LED quality risk, particularly for small standard such as circular and elliptical LED 3mm; the LED display in the LED does not shine, generally have a 50% probability that all cross type of weld, such as the LED pin, the IC pin points of weld, row row weld etc.. These questions need to improve skills improved sharply and strengthen quality inspection to disposal. Before leaving the factory inspection, inspection room temperature aging Gao Wenwen vibration is a good method of identification.
LED产品失效疑问的有用控制是封装、显示屏计划、出产和显示屏工程中需要注意避免控制的重要环节。而这些环节的有用确保需要我们工作孕育出更多像柏狮、国星、雷曼、利亚德等这样的优秀企业，推行更加严厉的质量管理体系，从计划、收买、出产、质量检测、包装、运送、售前和售后跟踪全过程进行产品的质量监测，确保产品“质量效能零缺陷”, 全彩LED显示屏推动整个工作的健康有序的成长。
Useful control question failure of LED products is to avoid the important link control package, display program, production and display project. But these links useful to ensure that we need to work to produce more like Bai Shi, country star, Lehman, Riyadh and other outstanding enterprises, implementation of more stringent quality management system, monitoring product quality from the plan, buy, production, quality inspection, packaging, transport, sale and after sale tracking the whole process, to ensure product "quality zero defect", promote the healthy and orderly development of the work. |
