Qhov laj thawj tseem ceeb ntawm LED zaub aging cuam tshuam nrog cov txheej txheem soldering teeb meem thiab teeb meem nrog qhov zoo ntawm LED nws tus kheej lossis cov txheej txheem tsim khoom, tshwj xeeb hauv qab no:
Txheej txheem Soldering:
Tshaj Kub Kub los yog Lub Sij Hawm: Thaum lub sij hawm txheej txheem encapsulation, yog tias qhov kub ntawm soldering tshaj qhov kam rau ua ntawm LED nti los yog bracket, los yog lub sij hawm soldering ntev dhau lawm, nws tuaj yeem ua rau hlau qaug zog ntawm cov pob qij txha thiab kev ntxhov siab los ntawm qhov sib txawv ntawm cov coefficients ntawm thermal expansion ntawm cov ntaub ntawv. Qhov no tuaj yeem ua rau xoob ntawm kev sib txuas ntawm LED nti thiab lub bracket, detachment ntawm solder pads, thiab thaum kawg, dim lub teeb, flickering, los yog tuag LEDs.
Tsis txaus los tiv thaiv- Kev ntsuas zoo li qub: LED chips tsis tshua muaj siab rau hluav taws xob zoo li qub. Yog tias qhov chaw tsim khoom tsis muaj cov khoom siv tiv thaiv zoo li qub (xws li tiv thaiv- cov dab teg zoo li qub lossis ionizers) lossis yog cov neeg ua haujlwm tsis zoo hauv av, electrostatic paug tuaj yeem ua rau PN hlws ris hauv cov nti, ua rau muaj qhov cuam tshuam tam sim no lossis ncaj qha tsis ua haujlwm, ua rau pom qhov ci tsis sib xws lossis hauv cheeb tsam blackouts tom qab teeb pom kev zoo.
Cov txheej txheem Encapsulation Defects: Yog tias qhov kev huv huv ntawm ib puag ncig tsis raug tswj nruj me ntsis thaum lub sijhawm txheej txheem encapsulation, plua plav lossis impurities tuaj yeem ua raws li cov nti saum npoo, tsim cov kab hluav taws xob los yog thaiv lub teeb - thaj tsam emitting, ua rau luv luv lossis txo cov luminous efficiency. Tsis tas li ntawd, kev kho tsis tiav lossis tsis txaus sealing ntawm lub encapsulating colloid tuaj yeem tso cai rau cov dej nkag, ua kom cov hlau oxidation thiab cov khoom laus.
Cov teeb meem LED Zoo lossis cov txheej txheem tsim khoom
Chip Quality Defects: Yog hais tias lub nti muaj qhov tsis xws li lattice, tsis sib xws impurity doping, los yog tsis txaus electrode metallization txheej thickness thaum lub sij hawm txoj kev loj hlob, nws luminous efficiency yuav maj mam txo lub sij hawm, manifesting li txo brightness los yog xim kub drift. Tsis tas li ntawd, qhov ntxhib ntug kev puas tsuaj los ntawm cov txheej txheem nti tuaj yeem dhau los ua cov ntsiab lus kev ntxhov siab, ua rau lub teeb nrawm nrawm.
Kev them nyiaj yug thiab hlau Bonding teeb meem: Tsis txaus txheej thickness los yog tsis zoo corrosion kuj ntawm cov ntaub ntawv npog tuaj yeem yooj yim ua rau oxidation thiab xeb tom qab siv sij hawm ntev -, ua rau muaj zog tiv thaiv. Cov txheej txheem kev sib txuas tsis zoo (xws li kub hlau curvature ntau dhau los yog cov pob qij txha txias) tuaj yeem txo qhov kev sib kis tau zoo tam sim no, ua rau muaj cua sov hauv cheeb tsam lossis cuam tshuam tam sim no.
Phosphor thiab Encapsulant Aging: Phosphors raug photodegradation nyob rau hauv ntev - lub sij hawm ultraviolet hluav taws xob thiab siab - qhov kub thiab txias ib puag ncig, ua rau cov xim hloov pauv. Encapsulating colloids (xws li silicone thiab epoxy resin) tej zaum yuav daj los yog nkig nyob rau hauv ultraviolet hluav taws xob, oxygen, thiab noo noo, txo lub teeb transmittance thiab cuam tshuam rau tshav kub dissipation kev ua tau zoo.
Kev Tiv Thaiv thiab Txhim Kho Kev Ntsuas
Vuam txheej txheem tswj:
Optimize vuam txwv tsis pub (kub, lub sij hawm, siab) los xyuas kom meej tag nrho cov pob qij txha thiab tiv thaiv txias solder pob qij txha;
Txhim kho qhov chaw tsim khoom nrog cov khoom siv tiv thaiv- zoo li qub, thiab xav kom cov neeg ua haujlwm hnav khaub ncaws tiv thaiv - zoo li qub thiab tsis tu ncua xyuas cov av tiv thaiv;
Tuav chav 1000 chav huv huv hauv chav ua haujlwm ntim khoom, thiab ua qhov ntsuas huab cua tom qab ntim.
Kev kuaj kev laus thiab kev tshuaj ntsuam xyuas:
Kev Tshawb Fawb Kev Laus Tag Nrho: Ua lub zog- ntawm kev kuaj kev laus (feem ntau 48-72 teev) ntawm txhua lub vijtsam zaub los sim ua kom ntev - lub sijhawm ua haujlwm thiab tshem tawm cov khoom lag luam ua tsis tiav thaum ntxov;
Theem Aging: Ua ntej, ua kom qis- qhov kub thiab txias (piv txwv li, 40 degree) los ntsuas kev ntseeg tau ntawm vuam, tom qab ntawd siab - kub aging (piv txwv li, 80 degree) kom ceev cov khoom aging, thiab thaum kawg chav - kub aging kom paub tseeb stability;
Parameter Monitoring: Sau cov voltage, tam sim no, kub, thiab lwm yam ntaub ntawv nyob rau hauv lub sij hawm, thiab tsom mus rau kev soj ntsuam modules nrog txawv txav.
Qhov tseem ceeb ntawm Kev Ntsuas Kev Laus: Kev kuaj kev laus yog ib kauj ruam tseem ceeb hauv kev txhim kho kev ntseeg siab ntawm LED cov lus. Los ntawm kev simulating kev siv huab cua, nws tuaj yeem tshuaj xyuas cov khoom lag luam uas tsis zoo thiab txo qis tom qab tsis ua haujlwm. Txawm hais tias kev ntsuam xyuas kev laus tuaj yeem ua rau lub neej luv luv ntawm qee qhov LEDs, los ntawm kev tswj xyuas lub sijhawm ntsuas kom zoo (xws li siv lub "bathtub nkhaus" txoj kev xav los sim tsuas yog lub sijhawm tsis ua haujlwm thaum ntxov), lub neej poob qis tuaj yeem txo qis thaum ua kom zoo.
