大家(jia)好我是(shi)小(xiao)編(bian)一夢今天我們來(lai)介紹led燈板(ban)死燈珠(zhu) 燈珠(zhu)死燈芯片發黑(hei)是(shi)什(shen)么情況(kuang)的問(wen)題(ti)，以(yi)下就(jiu)是(shi)一夢對此(ci)問(wen)題(ti)和相(xiang)關問(wen)題(ti)的歸納(na)整理,一起來(lai)看看吧(ba)。

文章目錄導航:

• 1、模組led燈具通電后有部分燈珠不亮是什么原因
• 2、LED死燈珠后芯片電極發黑的原因
• 3、LED燈珠灌膠后死燈的原因
• 4、led燈燒燈珠什么原因

模組led燈具通電后有部分燈珠不亮是什么原因

LED燈不(bu)亮主要(yao)(yao)影響原因有(you)(you)(you)，供電(dian)部(bu)(bu)(bu)分(fen)(fen) 燈珠(zhu)光(guang)(guang)源本(ben)身的(de)(de)(de)(de)(de)問(wen)題 兩(liang)部(bu)(bu)(bu)分(fen)(fen)引起(qi)的(de)(de)(de)(de)(de)供電(dian)部(bu)(bu)(bu)分(fen)(fen)好解決也(ye)好查看 重新(xin)更(geng)換電(dian)源即(ji)(ji)可由(you)于不(bu)知(zhi)道你(ni)問(wen)的(de)(de)(de)(de)(de)是(shi)(shi)LED燈珠(zhu) 還是(shi)(shi)LED成(cheng)(cheng)品燈 我就兩(liang)方面(mian)都(dou)說一下 如果(guo)是(shi)(shi)單純(chun)的(de)(de)(de)(de)(de)LED燈珠(zhu)不(bu)亮的(de)(de)(de)(de)(de)話 一般(ban)由(you)封(feng)裝(zhuang)工藝(yi)(yi)導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)(de)(de) 或者使(shi)用了(le)(le)劣(lie)質(zhi)的(de)(de)(de)(de)(de)原材料封(feng)裝(zhuang)導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)(de)(de)封(feng)裝(zhuang)工藝(yi)(yi)步驟： 清洗(xi)支(zhi)(zhi)架 固(gu)(gu)(gu)(gu)晶(jing)(jing)(jing)焊(han)線(xian)(xian)(xian)(xian) 灌(guan)膠(jiao) 烘烤(kao) 切腳成(cheng)(cheng)型 幾(ji)部(bu)(bu)(bu)分(fen)(fen)組成(cheng)(cheng) 任何(he)環節疏漏(lou)都(dou)有(you)(you)(you)可能(neng)(neng)造(zao)成(cheng)(cheng)死(si)(si)燈不(bu)亮的(de)(de)(de)(de)(de)現(xian)象(xiang) 固(gu)(gu)(gu)(gu)晶(jing)(jing)(jing) 時(shi)絕緣膠(jiao)少了(le)(le) 晶(jing)(jing)(jing)片(pian)接觸支(zhi)(zhi)架短路 焊(han)線(xian)(xian)(xian)(xian)拉力過大(da)斷線(xian)(xian)(xian)(xian) 烘烤(kao)時(shi)間不(bu)足 膠(jiao)水(shui)(shui)內(nei)部(bu)(bu)(bu)未完全固(gu)(gu)(gu)(gu)定 膠(jiao)水(shui)(shui)配比(bi)有(you)(you)(you)問(wen)題內(nei)部(bu)(bu)(bu)潮濕(shi)劣(lie)質(zhi)原料引起(qi)的(de)(de)(de)(de)(de)： 原料有(you)(you)(you) 芯片(pian) 導(dao)(dao)線(xian)(xian)(xian)(xian) 膠(jiao)水(shui)(shui) 支(zhi)(zhi)架 固(gu)(gu)(gu)(gu)晶(jing)(jing)(jing)膠(jiao) 5大(da)類(lei) 長出(chu)問(wen)題的(de)(de)(de)(de)(de)有(you)(you)(you)：芯片(pian)使(shi)用了(le)(le)次品芯片(pian) 或者未分(fen)(fen)選的(de)(de)(de)(de)(de)芯片(pian) 本(ben)身有(you)(you)(you)漏(lou)電(dian)等不(bu)良(liang)現(xian)象(xiang) 引線(xian)(xian)(xian)(xian)：由(you)于競爭激(ji)烈(lie)現(xian)在很(hen)大(da)廠(chang)家都(dou)摒棄了(le)(le)金(jin)線(xian)(xian)(xian)(xian) 開始采用 銀線(xian)(xian)(xian)(xian) 鋁線(xian)(xian)(xian)(xian) 鐵(tie)線(xian)(xian)(xian)(xian)這些導(dao)(dao)線(xian)(xian)(xian)(xian)的(de)(de)(de)(de)(de)耐溫(wen)(wen)(wen)性(xing) 跟電(dian)流負載性(xing)都(dou)比(bi)金(jin)線(xian)(xian)(xian)(xian)差很(hen)多(duo)(duo) 膠(jiao)水(shui)(shui)：未采用耐高溫(wen)(wen)(wen)膠(jiao)水(shui)(shui) 過焊(han)后變形 內(nei)部(bu)(bu)(bu)張力 使(shi)引線(xian)(xian)(xian)(xian)脫貨 斷開 導(dao)(dao)致(zhi)(zhi)燈珠(zhu)不(bu)良(liang) 支(zhi)(zhi)架方面(mian)問(wen)題較少 主要(yao)(yao)是(shi)(shi)使(shi)用前要(yao)(yao)超聲波(bo)清洗(xi)到位不(bu)能(neng)(neng)有(you)(you)(you)殘留(liu)物在上面(mian)固(gu)(gu)(gu)(gu)晶(jing)(jing)(jing)膠(jiao)也(ye)很(hen)少出(chu)問(wen)題 選用正(zheng)品大(da)牌(pai)的(de)(de)(de)(de)(de)即(ji)(ji)可如果(guo)是(shi)(shi)成(cheng)(cheng)品光(guang)(guang)源出(chu)現(xian)了(le)(le) 燈珠(zhu)不(bu)亮 那原因就更(geng)多(duo)(duo)了(le)(le) ： 電(dian)源是(shi)(shi)一個(ge)主要(yao)(yao)的(de)(de)(de)(de)(de)部(bu)(bu)(bu)分(fen)(fen) 供電(dian)不(bu)穩是(shi)(shi)燈珠(zhu)的(de)(de)(de)(de)(de)第一大(da)殺(sha)手(shou) 其次就是(shi)(shi)散熱問(wen)題 溫(wen)(wen)(wen)度過高導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)(de)(de)再一個(ge)就是(shi)(shi)在焊(han)接過程中已經(jing)出(chu)現(xian)了(le)(le)隱患的(de)(de)(de)(de)(de) 劣(lie)質(zhi)燈珠(zhu)以及過高的(de)(de)(de)(de)(de)爐溫(wen)(wen)(wen)會湯(tang)傷 燙死(si)(si)燈珠(zhu)建(jian)議在選取LED燈珠(zhu)的(de)(de)(de)(de)(de)時(shi)候要(yao)(yao)選用封(feng)裝(zhuang)工藝(yi)(yi)過關 原材料扎實的(de)(de)(de)(de)(de)燈珠(zhu)如果(guo)是(shi)(shi)成(cheng)(cheng)品也(ye)是(shi)(shi)一樣 拿回來(lai)后記得(de)老(lao)化測(ce)試(shi)十來(lai)天 隱患基本(ben)上就能(neng)(neng)排除了(le)(le)

LED死燈珠后芯片電極發黑的原因

是(shi)芯片擊穿了(le)(le)，對于大功率，電(dian)壓(ya)和電(dian)流都是(shi)有個范圍(wei)的，主要是(shi)散熱(re)不(bu)(bu)夠，散熱(re)不(bu)(bu)夠引起環氧樹脂(zhi)變黑，熒光粉光衰過快，所以芯片看(kan)上去也變黑了(le)(le)。芯片電(dian)極發黑可能(neng)有兩個原因(yin)：

1、大電(dian)(dian)(dian)流。比如測(ce)試時(shi)，由(you)于電(dian)(dian)(dian)源的(de)不(bu)穩(wen)定產生的(de)瞬間高壓，或誤操作引起的(de)大電(dian)(dian)(dian)流，靜電(dian)(dian)(dian)一(yi)般只會在(zai)芯片上面某處產生發黑。

2、氧(yang)化(hua)。電(dian)極(ji)若是鋁電(dian)極(ji)的話，容易(yi)被氧(yang)化(hua)、變黑(hei)。金電(dian)極(ji)也可(ke)能會被硫(liu)化(hua)，變黑(hei)。

LED燈珠灌膠后死燈的原因

一、究其(qi)(qi)(qi)原(yuan)因(yin)不(bu)(bu)外(wai)是(shi)兩(liang)種(zhong)情(qing)(qing)況(kuang)：其(qi)(qi)(qi)一，LED的(de)(de)(de)(de)漏電(dian)(dian)(dian)(dian)流(liu)過(guo)大(da)(da)造(zao)(zao)成PN結失(shi)(shi)效，使(shi)LED燈點不(bu)(bu)亮，這種(zhong)情(qing)(qing)況(kuang)一般(ban)不(bu)(bu)會影(ying)(ying)響其(qi)(qi)(qi)它(ta)的(de)(de)(de)(de)LED燈的(de)(de)(de)(de)工作其(qi)(qi)(qi)二，LED燈的(de)(de)(de)(de)內部連(lian)接(jie)(jie)引(yin)線(xian)斷開，造(zao)(zao)成LED無電(dian)(dian)(dian)(dian)流(liu)通過(guo)而產生(sheng)死燈，這種(zhong)情(qing)(qing)況(kuang)會影(ying)(ying)響其(qi)(qi)(qi)它(ta)的(de)(de)(de)(de)LED燈的(de)(de)(de)(de)正(zheng)常工作，原(yuan)因(yin)是(shi)由于LED燈工作電(dian)(dian)(dian)(dian)壓(ya)(ya)低（紅黃橙LED工作電(dian)(dian)(dian)(dian)壓(ya)(ya)1.8V-2.2V,藍綠(lv)白LED工作電(dian)(dian)(dian)(dian)壓(ya)(ya)2.8-3.2V），一般(ban)都要(yao)(yao)(yao)用(yong)串(chuan)、并(bing)聯(lian)來(lai)聯(lian)接(jie)(jie)，來(lai)適(shi)應不(bu)(bu)同的(de)(de)(de)(de)工作電(dian)(dian)(dian)(dian)壓(ya)(ya)，重(zhong)(zhong)慶led顯(xian)示屏(ping)串(chuan)聯(lian)的(de)(de)(de)(de)LED燈越(yue)多(duo)影(ying)(ying)響越(yue)大(da)(da)，只要(yao)(yao)(yao)其(qi)(qi)(qi)中(zhong)有一個(ge)LED燈內部連(lian)線(xian)開路(lu)，將(jiang)造(zao)(zao)成該(gai)串(chuan)聯(lian)電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)(de)整串(chuan)LED燈不(bu)(bu)亮，可見這種(zhong)情(qing)(qing)況(kuang)比第一種(zhong)情(qing)(qing)況(kuang)要(yao)(yao)(yao)嚴(yan)重(zhong)(zhong)的(de)(de)(de)(de)多(duo)。二、LED死燈是(shi)影(ying)(ying)響產品(pin)質(zhi)量(liang)、可靠性(xing)的(de)(de)(de)(de)關健(jian)，如何(he)減少和杜絕死燈，提高產品(pin)質(zhi)量(liang)和可靠性(xing)，是(shi)封裝、應用(yong)企業需要(yao)(yao)(yao)解決的(de)(de)(de)(de)關鍵問題(ti)。下面是(shi)對(dui)(dui)造(zao)(zao)成死燈的(de)(de)(de)(de)一些原(yuan)因(yin)作一些分析(xi)探(tan)討：靜(jing)電(dian)(dian)(dian)(dian)對(dui)(dui)LED芯(xin)片(pian)造(zao)(zao)成損(sun)傷，使(shi)LED芯(xin)片(pian)的(de)(de)(de)(de)PN結失(shi)(shi)效，重(zhong)(zhong)慶led顯(xian)示屏(ping)漏電(dian)(dian)(dian)(dian)流(liu)增大(da)(da)，變(bian)成一個(ge)電(dian)(dian)(dian)(dian)阻靜(jing)電(dian)(dian)(dian)(dian)是(shi)一種(zhong)危害極大(da)(da)的(de)(de)(de)(de)魔鬼，全世界因(yin)為靜(jing)電(dian)(dian)(dian)(dian)損(sun)壞(huai)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)子(zi)元(yuan)器件不(bu)(bu)計其(qi)(qi)(qi)數(shu)，造(zao)(zao)成數(shu)千(qian)(qian)萬(wan)美元(yuan)的(de)(de)(de)(de)經濟損(sun)失(shi)(shi)。所以防止靜(jing)電(dian)(dian)(dian)(dian)損(sun)壞(huai)電(dian)(dian)(dian)(dian)子(zi)元(yuan)器件，是(shi)電(dian)(dian)(dian)(dian)子(zi)行業一項很重(zhong)(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de)工作，LED封裝、應用(yong)的(de)(de)(de)(de)企業千(qian)(qian)萬(wan)不(bu)(bu)要(yao)(yao)(yao)掉以輕心。任何(he)一個(ge)環(huan)節出問題(ti)，都將(jiang)造(zao)(zao)成對(dui)(dui)LED的(de)(de)(de)(de)損(sun)害，使(shi)LED性(xing)能變(bian)壞(huai)甚(shen)至(zhi)失(shi)(shi)效。三(san)、我們知道人(ren)體（ESD）靜(jing)電(dian)(dian)(dian)(dian)可以達到三(san)千(qian)(qian)伏左右，足可以將(jiang)LED芯(xin)片(pian)擊(ji)穿損(sun)壞(huai)，在LED封裝生(sheng)產線(xian)，各(ge)類(lei)設(she)備的(de)(de)(de)(de)接(jie)(jie)地電(dian)(dian)(dian)(dian)阻是(shi)否符合要(yao)(yao)(yao)求，這也是(shi)很重(zhong)(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de)，一般(ban)要(yao)(yao)(yao)求接(jie)(jie)地電(dian)(dian)(dian)(dian)阻為4歐(ou)姆，有些要(yao)(yao)(yao)求高的(de)(de)(de)(de)場合其(qi)(qi)(qi)接(jie)(jie)地電(dian)(dian)(dian)(dian)阻甚(shen)至(zhi)要(yao)(yao)(yao)達到≤2歐(ou)姆。

led燈燒燈珠什么原因

原因:散熱不好就容易(yi)燒壞

LED燈(deng)與(yu)驅動(dong)(dong)器是配套使用的(de)(de)，驅動(dong)(dong)器直流輸(shu)出(chu)的(de)(de)電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流與(yu)燈(deng)板需要的(de)(de)電(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)流一致。LED燈(deng)珠發光亮度對電(dian)(dian)(dian)流很敏感(gan)，燈(deng)珠通(tong)過的(de)(de)電(dian)(dian)(dian)流也(ye)有極限值。電(dian)(dian)(dian)流大(da)(da)時亮度大(da)(da)但也(ye)發熱大(da)(da)，散(san)熱不(bu)好(hao)就容(rong)易(yi)燒壞。一般(ban)講因驅動(dong)(dong)器電(dian)(dian)(dian)壓(ya)波動(dong)(dong)升高(gao)點(dian)而擊穿(chuan)燈(deng)珠的(de)(de)很少，但因電(dian)(dian)(dian)流波動(dong)(dong)加大(da)(da)燒壞燈(deng)珠的(de)(de)多(duo)。可在驅動(dong)(dong)器輸(shu)出(chu)端(duan)串一小(xiao)電(dian)(dian)(dian)阻限流保護燈(deng)珠(亮度稍減)。

以上就是(shi)天成小編對于led燈(deng)板死燈(deng)珠(zhu) 燈(deng)珠(zhu)死燈(deng)芯(xin)片發黑(hei)是(shi)什么情況問(wen)題和相關問(wen)題的解答了(le)，希望對你有(you)用(yong) 【責任編輯(ji)：一夢】