Lambaska LED-ka ee shubaya jajabyada, xirfadaha aan baakadnayn ayaa dhawaan sababay ganacsi heer sare ah oo tignoolajiyadeed ee warshadaha LED-ka. Sababo la xiriira laambad-dhaqameedka LED-ka, habka samaynta samaynta kulaylka, cilladda iftiinka iyo xirfadaha kale ee cirridka. Lambaska LED-ka ee shubaya jajabyada iyo xirfadaha aan baakaduhu ku jirin horraantii 10 sano ka hor, wadamada shisheeye si ay u maalgashadaan cilmi baaris weyn oo raasumaal ah. Ujeeddadu tahay kuulka nalalka LED-ka ee xabagta substrate-ka iyo xirfadaha alxanka tooska ah. Waxaa si buuxda u baabi'iyay kuul nalalka LED chips rasmiga ah ee muuqaalka kore ee cudurro badan oo timo, jidaynayey kuul LED si ay u adkeysan heerkulka sare iyo fidinta kuul nalalka LED. Warshaduhu waxay dhammaan ka sarreeyaan xirfadaha goynta ee baakadaha laambada LED-ka.
& Immisa wnbsp; laakiin su'aashu waxay tahay: Waa maxay sababta ay u daadiyaan xirfadaha laambad LED? Ku-tiirsanaanta aluminium (naxaas) substrates, samaynta substrate dhoobada, iyo rakibaadda ma aha mid fudud sida substrates biraha, sababtoo ah (laba jeer) alxanka daasadaha waa in ay u adkeysan 280 darajo heerkul sare, taas oo aan ku caawin karin, laakiin waxyeello u geysanaya walxaha iyo qaybaha. Substrate-ka dhoobada ah iyo substrate-ka biraha ah kama sarreeyaa heerka milicsiga, iyo saamaynta iftiinka ku-meel-gaarka ah waa ay adagtahay in la hagaajiyo. Heerarka xakamaynta kulaylka xaddidan ee substrate-ka dhoobada ah iyo aagga xidhiidhka xaddidan ayaa sidoo kale xaddiday saameynteeda iftiinka deggan. Nidaamka shubista laambada LED laba jeer oo dhan alxanka daasadaha iyo alxanka substrate dhoobada ah ee aluminiumka substrate dual caabbinta kuleylka ayaa ku filan in ay dib u dhigto dabaysha sare ee aan soo sheegnay. Intaa waxaa dheer, alxanka cadaadiska kulaylka iyo alxanka reflux ee kuul nalalka LED aad u sarreeya, iyo dhalidda waa mid aan degganayn. Marka loo eego dadka isticmaala dhamaadka, qalabka wanaagsan ee LED waa inuu lahaadaa tayada iftiinka wanaagsan, hawlaha iftiinka sare, kharashka nidaamka hoose iyo soo celinta maalgashiga degdega ah. Haysashada kuul laambada LED-ka ah ee shubista xirfadaha mustaqbalka (LM yuan) qiimaha. Dareen ahaan, xirfadaha diiradda saaraya xirmooyinka baakadaha laambada LED waa horumarinta iyo xirfadaha wax soo saarka ee xirmooyinka xirmooyinka. COB LED laambad xidhidhiyaha iyo hal-chip LED laambad baakadaha ayaa shaaca ka qaaday xoog badan marka la eego iftiin xoog leh, daadinta kulaylka, qaybinta iftiinka, kharashka, iwm. Kuul-laambad-dhaqameedka COB LED-ka ah hadda waa gunta adeegsata aluminium (ama naxaas) substrates si loogu daro guddiga fiber FR4 mid. Kiniinnada guriga ee FR-4 ee semi-daaweynta, heerkulka kulaylka waa 0.3 / m-k oo keliya, albaabka ugu fiican waa 2.0 / m-k kaliya ee ganacsadaha, halka isku-dhafka kuleylka aluminium saafi ah uu yahay 237 / m-k. Waa inay kordhisaa caabbinta kulaylka ee nidaamka, taasoo keenaysa laambada LED-ka ee daran inay qudhunto oo ay yarayso nolosha adeegga. Sidaa darteed, fikradaha maskaxda ee dadku waxay tirtirayaan fiilada dahaarka ee aluminium substrates.
“Tusmada ugu hooseysa ee LMCOB
”(Qodista maqaarka naxaasta ah iyo lakabka dahaarka ee substrate aluminium), laakiin waxay ku kooban tahay sababta qalabka, jel, habka iyo kharashka, oo aan weli la dalacsiin. Intaa waxaa dheer, suuqa hadda waa mid aad u caan ah oo loo yaqaan
“Isha iftiinka isku dhafan
”Aqoonyahan, aqbalida habka qaabaynta cirbadeynta si loogu dhejiyo saxanka korantada ee PPA (ama EMC ee hadda riixaya), sababtoo ah PPA waxay noqon doontaa budo jaale ah oo hoos yimaada shucaac diirran iyo ultraviolet, taasoo keentay biyo iyo biyo neefsan kara. Qaabka loo qaabeeyey waa sababta oo ah saxanka korantada ayaa ka sarreeya chip 1.5 walaashii, iyo budada fluorescent iyo qiyaasta jel ayaa aad u da' weyn. Ma aha oo kaliya inay kordhiso qiimaha baakadaha, colloid aad u dhumuc weyn ayaa sidoo kale saameyn doonta gudbinta. Waqtigan xaadirka ah, dhammaan COB LED laambada xargaha xargaha ma laha wax ka reeban in ay dejiyaan qaab-dhismeedka xero si ay uga hortagaan cirridka jahawareerka iyada oo aan la daadin, sababtoo ah jel-xireenka iyo dusha sare ee saliidda cad ee nuugta iftiinka. Asal ahaan, xoojinta iftiinka iyo wareejinta kulaylka ee magaalada ayaa sabab muhiim ah u ah saameynta iftiinka ku-meel-gaarka ah ee iftiinka iftiinka iftiinka iftiinka ee COB LED iyo dhibka saameynta iftiinka gobolka. Naqshadeynta kuulka nalalka LED-ka, su'aasha ugu badan ee 5052 LED suulasha laambadaha la isweyddiiyo ayaa ah sida loo doorto awoodda wadista, iyo runtii kuulka nalalka LED-ka waa la tuuraa ama la burburiyaa, saamiga awoodda wadista waa mid karti leh. Xirfadaha iftiinka tusbaxa fudud ee looxa gaaban. Si kastaba ha noqotee, laambada COB LED ee kuul aluminiumka aluminiumku waxay aqbaleen qaabeynta baakadaha baahsan ee awoodda kulaylka, iyo (chip si toos ah ayaa loogu sheegay substrate-ka).
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