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一、簡便辨別虛焊死燈
A simple, identify dead lights.
比較簡單但又適當靈驗的辨別LED死燈的辦法即是給不亮的燈加熱。咱們把一些不亮的LED燈的LED引線加熱到200-300℃，移開火源，用3伏扣式電池按正、負極銜接LED，假如此刻LED燈能點亮，但跟著引線溫度降低LED燈由亮變為不亮，這就證實LED燈是虛焊。加熱能點亮的理由是利用了金屬熱脹冷縮的原理，LED引線加熱時脹大伸長與內部焊點接通，此刻接通電源，LED就能正常發光，跟著溫度降低LED引線縮短回復到常溫狀態，與內部焊點斷開，LED燈就點不亮了，出現這種狀況時，就闡明是虛焊所形成的的死燈。
A relatively simple but effective way to identify the LED dead lights is to give the lights do not light heating. Let's put some LED lead heating bright LED lights to 200-300 DEG C, remove from heat, 3 volt button cell according to the positive and negative connection LED, if this LED lamp can light up, but with the decrease of temperature leads LED by the bright lights are not bright, it is confirmed that the LED lamp. Heating can light the reason is based on the principle of thermal expansion and contraction of the metal, LED wire heating swell elongation and internal solder is now connected to the power supply, LED will be able to follow the normal light, the temperature decreased LED lead back to shorten the normal state, and the internal solder disconnected, LED lamp is not lit, this kind of situation, that is formed by the death of the lamp.
二、簡便處理LED死燈辦法
Two, a simple way to deal with LED dead light
1、處理靜電對LED芯片形成損傷，使LED芯片的PN結失效革而導致死燈的辦法。LED芯片的PN結失效革而導致死燈大多數是作業人員本身帶的導致的，人體帶靜電的多少，與人穿的不一樣布料衣服、及各人的體質有關，秋冬季晚上咱們脫衣服就很簡單看見衣服之間的放電現象，所以作業時應穿防靜電服裝，配帶靜電環，靜電環應接地良好，有一種不需要接地的靜電環防靜電的作用不好，主張不使用配帶該種商品，假如作業人員違背操作規程，則應承受相應的警示教學，同時也起到告示他人的作用。
1, deal with static damage to the LED chip formation, so that the LED chip PN junction failure led to the death of the lamp method. PN junction LED chip failure caused death is the most light leather workers with itself to the human body with static electricity, and people wearing different clothes, and his cloth physique, autumn and winter evening when we take off clothes is very simple to see discharge phenomenon between the clothes, so work should wear anti-static clothing and equipped with electrostatic ring, static ring should be well grounded, there is a need of electrostatic grounding ring antistatic effects is not good, that do not use with the goods, if the operator violate the rules, should bear the corresponding warning teaching, but also to the notice of others.
2、封裝過程中某一個環節忽略都是形成的因素,這LED死燈因素主要是作業人員的忽略形成的。假如作業人員不小心將銀膠（關于單焊點芯片）點得多或是點得少了，都是不可的，多了膠會返到芯片金墊上，形成短路，少了芯片又粘不牢。焊接工序，溫度一般280℃為最好，金絲球焊機的壓力、時刻、溫度、功率四個參數的合作都要恰到好處，不然，壓力大簡單壓碎芯片，太小則簡單虛焊。
2, the packaging process of a link is to ignore the formation of factors, which is the main factor of the LED dead light workers to ignore the formation of. If the staff is not careful silver glue (on a single spot welding chip) is much more or less point, are not allowed, and more plastic will be returned to the chip pad, forming a short circuit, the chip is not sticky. The welding process, the average temperature 280 degrees for best bonder pressure, time, temperature and power parameters of the four cooperation should be just perfect, otherwise, the pressure is too small, simple crushing chip, simple.

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