LED是全彩LED顯示屏的最要害器件，相當(dāng)于電腦的CPU.LED的選擇現(xiàn)已選擇了整個(gè)顯示屏50%以上的質(zhì)量。如果未能選擇好LED,顯示屏的其他部件再好也無(wú)法彌補(bǔ)顯示屏質(zhì)量的缺陷。由于 全彩LED顯示屏http://www.vipgo8.com由上萬(wàn)甚至幾十萬(wàn)組紅、綠、藍(lán)三種LED組成的像素點(diǎn)組成，任一顏色LED的失效均會(huì)影響顯示屏整體視覺(jué)效果。一般來(lái)說(shuō)，按工作經(jīng)歷，全彩LED顯示屏在led顯示屏開(kāi)端設(shè)至極老化72小時(shí)出貨前的失功率應(yīng)不高于萬(wàn)分之三（指LED器件本身緣由致使的失效）。 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類：短路（漏電）、開(kāi)路、暗亮。短路（漏電）一般是由于模塊電路中的沖擊電流太大構(gòu)成LED芯片功用發(fā)生改動(dòng)，芯片漏電流增大致使；開(kāi)路可以靜電或其他緣由構(gòu)成LED芯片被擊穿；暗亮，一般是由于LED不恰當(dāng)運(yùn)用致使膠體里面進(jìn)水汽，影響了全彩LED顯示屏的光學(xué)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.
關(guān)于LED失效問(wèn)題。全彩LED顯示屏首要運(yùn)用計(jì)劃啟航，需要選好恰當(dāng)?shù)碾娐罚瑥碾娐方涌跍p少靜電挾制，根絕大電流脈沖損壞LED的工作情況發(fā)生，需要計(jì)劃合理的計(jì)劃保護(hù)密封LED,根絕可以外力拉傷LED管腿的表象發(fā)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.
其次在出產(chǎn)中注意合理運(yùn)用LED的細(xì)節(jié)掌控：注意物料的投料運(yùn)用合理的掌控，關(guān)于過(guò)期的物料一定要做防潮技能處置；注意防靜電方法的嚴(yán)厲掌控，顯示屏設(shè)備工廠應(yīng)有超卓的防靜電方法，專用防靜電地、防靜電地板、防靜電烙鐵、防靜電臺(tái)墊、防靜電環(huán)、防靜電衣、濕度控制、設(shè)備接地（格外切腳機(jī)）等都是根柢需要，并且要用靜電儀守時(shí)檢測(cè)；須嚴(yán)厲控制好波鋒焊的溫度及過(guò)爐時(shí)間。建議為：預(yù)熱溫度100℃±5℃，最高不跨過(guò)120℃，且預(yù)熱溫度上升需要平穩(wěn)，焊接溫度為245℃±5℃，全彩LED顯示屏焊接時(shí)間建議不跨過(guò)3秒，過(guò)爐后切忌振動(dòng)或沖擊LED,直到恢復(fù)常溫情況。
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.
波峰焊機(jī)的溫度參數(shù)要守時(shí)檢測(cè)，這是由LED的特性選擇的，過(guò)熱或不堅(jiān)決的溫度會(huì)直接損壞LED或構(gòu)成LED質(zhì)量風(fēng)險(xiǎn)，格外關(guān)于小標(biāo)準(zhǔn)如3mm的圓形和橢圓形LED;led顯示屏在出現(xiàn)LED不亮?xí)r，一般有跨過(guò)50%概率為各種類型的虛焊致使的，如LED管腳虛焊、IC管腳虛焊、排針排母虛焊等。這些疑問(wèn)的改善需要嚴(yán)厲地改善技能并加強(qiáng)質(zhì)量查驗(yàn)來(lái)處置。全彩LED顯示屏出廠前的高溫文常溫老化查驗(yàn)、振動(dòng)查驗(yàn)也不失為一種好的查驗(yàn)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產(chǎn)品失效疑問(wèn)的有用控制是封裝、顯示屏計(jì)劃、出產(chǎn)和顯示屏工程中需要注意避免控制的重要環(huán)節(jié)。而這些環(huán)節(jié)的有用確保需要我們工作孕育出更多像柏獅、國(guó)星、雷曼、利亞德等這樣的優(yōu)秀企業(yè)，推行更加嚴(yán)厲的質(zhì)量管理體系，從計(jì)劃、收買(mǎi)、出產(chǎn)、質(zhì)量檢測(cè)、包裝、運(yùn)送、售前和售后跟蹤全過(guò)程進(jìn)行產(chǎn)品的質(zhì)量監(jiān)測(cè)，確保產(chǎn)品“質(zhì)量效能零缺陷”, 全彩LED顯示屏推動(dòng)整個(gè)工作的健康有序的成長(zhǎng)。
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. |
