Isikhokelo sokugqibela kwi-SMD ye-LED yoPhuhliso lweTrendi kunye neSicelo saso

Itekhnoloji emva kokukhanyisa kwe-LED okwangoku ihamba ngexesha lophuhliso olukhawulezayo, kwaye ukusebenza okukhanyayo kuyaqhubeka nokuqhubela phambili. Rhoqo kwiminyaka emibini, isixa sombane esikhanyayo esinokuveliswa ngesixhobo esinye sephakeji ye-LED sonyuka ngento emibini. Ukususela kwi-1980s, kukho ukunyuka ngokuthe ngcembe ekukhuthazeni ukusetyenziswa kwezixhobo ezixhonywe phezulu kwimveliso ye-LEDs. Xa kufikwa ekukhanyeni, i amandla aphezulu e-SMD LED eye yaveliswa emva koko yinto esetyenziselwa ukukhanyisa ipaneli yemoto, izibane zebrake, kwaye iye yongezwa nakwizixhobo zokukhanyisa rhoqo.

Ubume bemarike ye-SMD ye-LED

Xa kubonwa ngokwembono yehlabathi, imveliso yokupakisha eTshayina Taiwan ithatha amashumi amathandathu epesenti yesabelo sehlabathi. Imiba yemveliso kunye nentengiso yekhonkco loshishino izinzile, ngakumbi ngokubhekiselele kwicandelo lokupakisha, kwaye kukho ulwahlulo olucacileyo lwabasebenzi phakathi kwamashishini anyukayo, aphakathi, kunye namazantsi. Xa imveliso isiwa kumhlaba omkhulu, ixabiso lemveliso liya kuhla, nto leyo evumela ukuba ikhuphisane ngcono namanye amazwe. Kucingelwa ukuba kwisithuba seminyaka emihlanu ukuya kwelishumi ezayo, iYangtze River Delta, iPearl River Delta, Fujian, kunye nezinye iindawo ziya kuba ngamaziko ehlabathi okuvelisa. Ukupakishwa kwe-UV LED

Imakethi ye-LED ye-SMD yendawo izinzile kutshanje ukusuka kwindawo yokujonga imarike yelizwe laseTshayina.

Iimpawu ze-encapsulation ezisetyenziswa kwii-SMD LEDs

I-phosphor kunye ne-epoxy resin ziqwalaselwe kuqala ukuba zenze i-mold ye-SMD LED, eyona nyathelo lokuqala kwinkqubo ye-encapsulation. Emva koko, i-epoxy resin kunye ne-phosphor powder zidityanisiwe ukwenza ikhekhe leglue, ethi ke ibambelele kwi-chip. Okokugqibela, indawo eseleyo ejikeleze i-chip igcwele i-epoxy resin ukwenza i-LED epakishwe yi-SMD.

Kule mihla, i-SMD ye-LED eqhelekileyo kwimarike ipakishwe ngeetshiphusi ezintathu ze-LED, kwaye izikhonkwane ezintandathu zongezwa, eziqhagamshelwe kumphezulu webhodi yesekethe yePCB. Le LED inobukhulu bangaphandle be-50mm x 50mm. Idityaniswe ngokuthe ngqo kumphezulu we-heat sink usebenzisa i-adhesive conductive conductive, ekhokelela ekuphuculeni okubonakalayo ekugqithiseni ukushisa, ukuxhomekeka, kunye nokunciphisa izinga lokubola kokukhanya. Iisubstrates ezenziwe ngesinyithi-i-ceramic composites kunye ne-thermal conductivity efanelekileyo ngokuqhelekileyo yinto esetyenziselwa ii-LEDs zamandla aphezulu. Ezi ziimpawu eziphambili:

(1) Umgangatho ophezulu we-thermal conductivity kunye nokuchasana kwe-thermal;

(2) Ukuhambelana kwe-coefficient yokwandiswa kwe-thermal (TCE: 6.2);

(3) I-Anti-ultraviolet;

(4) I-Resistance Corrosion, kunye nokungabikho kwe-yellowing;

(5) Ukuthobela imigaqo ebekwe yi-ROHS;

(6) Ukukwazi ukumelana nobushushu obuphezulu.

Ukuchaswa kwe-thermal ye-encapsulation ye-LED kunempembelelo ebalulekileyo kubomi be-chip ye-LED, ngokukodwa ngokubhekiselele kwi-chip ye-LED ephantsi kwe-high current. Ulwakhiwo lwesibiyeli sokupakisha simisela iindleko kunye nokusebenza kokutshatyalaliswa kobushushu kweemveliso ze-LED encapsulation, kunye nesakhiwo sesibiyeli sokupakisha sivela kwicala lobungakanani obuncinci, ubukhulu obuncinci, kunye nokuchithwa kakuhle kobushushu. Oku kubalulekile kuba iindleko zeemveliso ze-LED ze-encapsulation zihambelana ngokuthe ngqo nokusebenza kokutshatyalaliswa kobushushu kwemveliso.

Xa upakisha iitshiphusi ezongezelelweyo ze-LED kwi-LED enye ye-SMD, umba wokutshatyalaliswa kobushushu yinto ekufuneka ithathelwe ingqalelo. I-ultra-low-low-thermal resistance enikezelwa ngama-LED aphezulu e-SMD ane-substrates ezenziwe nge-conductivity ephezulu ye-thermal conductivity ye-metal-ceramic composites yeyona nzuzo ibalulekileyo enikezelwa ngezi zibane. Ngenxa yobukhulu bayo obubambeneyo kunye neprofayile ecekethekileyo, i-ultra-low low-thermal resistance kunye ne-high-power-high-power chip package ye-LED ifaneleka ngakumbi ukusetyenziswa kwizicelo ezinendawo elinganiselweyo ekhoyo. Izicelo ezininzi zinokuzuza kakhulu ekusebenziseni lo msebenzi.

Umahluko phakathi kwee-SMD ze-LED kunye nee-LED ze-DIP

Isixhobo se-surface-mount (SMD) i-LED ifakwe phezulu kwibhodi yesekethe, iyenze ifaneleke kwi-high-mount-mount technology (SMT) processing kunye ne-reflow soldering. Ii-LED ezine-surface-mount diodes (SMD) zibonelela ngokuphucuka ngokuqaqamba, i-angle yokujonga, ukucaba, ukuthembeka, kunye nokungaguquguquki. Ukumelana kwayo nokungcangcazela okugqwesileyo, inqanaba eliphantsi leempazamo ezidityanisiweyo, kunye neempawu eziphakamileyo zefrikhwensi zezinye zezibonelelo zayo xa zithelekiswa nezo zezinye izixhobo ezipakishiweyo.

I-in-line LED isebenzisa i-potting njengento yokupakisha. Inyathelo lokuqala kwinkqubo yokubumba kukugalela intlaka ye-epoxy elulwelo kwindawo yokungunda kwe-LED, kulandele ukufakwa kwesibiyeli se-LED esinexinzelelo. Emva koko, indibano ifakwe kwi-oven ukunyanga i-epoxy resin, kwaye ekugqibeleni, i-LED yenziwa emva kokususwa kwi-mold cavity. Isabelo sayo esomeleleyo semarike singabalelwa kuzo zombini iindlela zokwenziwa ezithe ngqo kunye namaxabiso akhuphisanayo.

Ngenxa yokwanda ngokukhawuleza kwezoqoqosho kulo lonke ihlabathi, ngoku kukho imfuneko engxamisekileyo yokufumana isicombululo kwingxaki yehlabathi lonke yokunqongophala kwamandla ombane. Ukusetyenziswa kokukhanya malunga namashumi amabini epesenti yokusetyenziswa kombane ngokubanzi. Enye yezona zinto zibalulekileyo ezinokuthi zenziwe ukonga amandla kukuthoba umthamo wamandla asetyenziselwa ukukhanyisa. Utshintsho olusuka kwimithombo yokukhanya yesiqhelo lukhawuleziswa ngokusetyenziswa kwezibane ze-LED ezisebenza ngamandla, ezisebenza njengokutshintshwa kokukhanya okuqhelekileyo kwe-incandescent.

Ungayithenga phi i-SED LED?

Zhuhai Tianhui Electronic Co., Ltd.,  enye ye Abavelisi abakhokela , igxile ekucoceni umoya we-UV ye-LED, ukunyanyiswa kwamanzi kwe-UV ye-LED, ukuprintwa kwe-UV kunye nokunyanga, uv led  idiode , uv led imodyuli, kunye nezinye iimpahla. InoPhando olunezakhono kunye nokuveliswa kwezinto ezintsha kunye nabasebenzi bokuthengisa ukunika abathengi izisombululo ze-UV ze-LED, kwaye iimpahla zayo ziphumelele indumiso yenani elikhulu labathengi. Ngokuqhutywa kwemveliso epheleleyo, umgangatho ohambelanayo kunye nokuthembeka, kunye neendleko ezifikelelekayo, i-Tianhui Electronics sele isebenze kwi-UV ye-UV ye-package market. Ukusuka kubude obufutshane ukuya kumaza amade, iimpahla zibandakanya i-UVA, i-UVB, kunye ne-UVC, enee-specs ze-UV ezigcweleyo ze-LED ukusuka kwi-low ukuya kumandla aphezulu.