The Ultimate Guide to SMD LED Development Trend Ndi Ntchito Yake

Tekinoloje yowunikira kuyatsa kwa LED pakali pano ikukula mwachangu, ndipo kuwala kowala kukukulirakulirabe. Zaka ziwiri zilizonse, kuchuluka kwa kuwala kowala komwe kumatha kupangidwa ndi chipangizo chimodzi cha phukusi la LED kumawonjezeka ndi ziwiri. Kuyambira m'ma 1980, pakhala kuwonjezeka kwapang'onopang'ono pakulimbikitsa kugwiritsa ntchito zida zokwera pamwamba pakupanga ma LED. Pankhani yowunikira, the mkulu mphamvu SMD LED zomwe zidapangidwa pambuyo pake ndizomwe zimagwiritsidwa ntchito pakuwunikira pamagalimoto, ma brake magetsi, ndipo adawonjezedwa ku zida zowunikira nthawi zonse.

Msika wa SMD LED

Zikawoneka padziko lonse lapansi, kupanga ma CD ku China ku Taiwan kumakhala makumi asanu ndi limodzi pazaka zonse zapadziko lonse lapansi. Kupanga ndi kutsatsa kwamakampani amakampani kumakhala kokhazikika, makamaka pankhani yonyamula katundu, ndipo pali kugawanika koonekeratu kwa ntchito pakati pa mabizinesi akumtunda, apakati, ndi kutsika. Zokolola zikasamutsidwira kumtunda, mtengo wopangira umatsika, zomwe zimapangitsa kuti zipikisane bwino ndi mayiko ena. Zikuyembekezeka kuti mkati mwa zaka zisanu kapena khumi zikubwerazi, mtsinje wa Yangtze River Delta, Pearl River Delta, Fujian, ndi malo ena adzakhala malo opangira dziko lonse lapansi. Kupaka kwa UV LED

Msika wamba wa SMD LED wakhala wokhazikika posachedwa potengera msika waku China.

Makhalidwe a encapsulation omwe amagwiritsidwa ntchito mu ma SMD LEDs

Phosphor ndi epoxy resin amakonzedwa koyamba kuti apange nkhungu ya SMD LED, yomwe ndi sitepe yoyamba mu ndondomeko ya encapsulation. Kenaka, utomoni wa epoxy ndi phosphor ufa amaphatikizidwa kuti apange keke ya guluu, yomwe imamatira ku chip. Pomaliza, malo otsala ozungulira chip amadzazidwa ndi epoxy resin kuti apange SMD yodzaza ndi LED.

Masiku ano, mawonekedwe amtundu wa SMD pamsika amadzaza ndi tchipisi tating'ono ta LED, ndipo zikhomo zisanu ndi chimodzi zimawonjezedwa, zomwe zimalumikizidwa pamwamba pa bolodi ladera la PCB. LED iyi ili ndi kukula kwakunja kwa 50mm x 50mm. Zimagwirizanitsidwa mwachindunji pamwamba pa kutentha kwa kutentha pogwiritsa ntchito zomatira za thermally conductive, zomwe zimabweretsa kusintha kwakukulu kwa kutentha kwa kutentha, kudalirika, ndi kuchepa kwa mlingo umene kuwala kumawola. Magawo opangidwa ndi zitsulo-ceramic composites okhala ndi matenthedwe abwino ndi omwe amagwiritsidwa ntchito pama LED amphamvu kwambiri. Izi ndizomwe zimayambira:

(1) A mkulu mlingo wa madutsidwe matenthedwe ndi otsika kukana matenthedwe;

(2) Kugwirizana kwa coefficient of thermal expansion (TCE: 6.2);

(3) Anti-ultraviolet;

(4) Resistance Corrosion, komanso kusowa kwachikasu;

(5) Tsatirani ndondomeko zokhazikitsidwa ndi ROHS;

(6) Kutha kupirira kutentha kwambiri.

Kukaniza kwa kutentha kwa encapsulation ya LED kumakhudza kwambiri moyo wa chipangizo cha LED, makamaka pokhudzana ndi chipangizo cha LED chomwe chimakhala ndi mphamvu zamakono. Mapangidwe a bulaketi yoyikamo amatsimikizira mtengo ndi kutentha kwazinthu zopangira zida za LED, ndipo mawonekedwe a bulaketi yopakira akuyenda molunjika kukula kochepa, makulidwe owonda, komanso kutentha kwabwino. Izi ndizofunikira chifukwa mtengo wazinthu zopangira zida za LED zimayenderana mwachindunji ndi magwiridwe antchito a kutentha kwa chinthucho.

Mukayika tchipisi tambiri ta LED mu SMD imodzi ya LED, vuto la kutulutsa kutentha ndi chinthu chomwe chiyenera kuganiziridwa. Kutsika kwamafuta otsika kwambiri komwe kumaperekedwa ndi ma LED amphamvu kwambiri a SMD omwe magawo ake amapangidwa ndi zida zachitsulo-ceramic composites ndizopindulitsa kwambiri zoperekedwa ndi magetsi awa. Chifukwa cha kukula kwake kocheperako komanso mawonekedwe ake ocheperako, kukana kotsika kwambiri kwamafuta ndi phukusi lamphamvu lamphamvu la LED chip ndiloyenera kugwiritsidwa ntchito pamapulogalamu omwe ali ndi malo ochepa. Mapulogalamu ambiri amatha kupindula kwambiri pogwiritsa ntchito izi.

Kusiyanitsa Pakati pa Ma LED a SMD ndi ma DIP LEDs

Chipangizo chapamwamba chapamwamba (SMD) LED chimayikidwa pamwamba pa bolodi la dera, ndikupangitsa kuti ikhale yoyenera kukonzanso teknoloji (SMT) komanso kubwezeretsanso soldering. Ma LED okhala ndi ma diode apamwamba (SMD) amapereka kusintha pakuwala, mawonekedwe owonera, kusalala, kudalirika, komanso kusasinthasintha. Kukana kwake kugwedezeka kwabwino kwambiri, kutsika kwapang'onopang'ono kolumikizana kwa solder, komanso mawonekedwe apamwamba kwambiri ndi zina mwazabwino zake poyerekeza ndi zida zina zopakidwa.

The in-line LED imagwiritsa ntchito potting ngati zida zake zopangira. Gawo loyamba pakuphika ndikulowetsa utomoni wamadzimadzi a epoxy pabowo la nkhungu ya LED, ndikutsatiridwa ndi kuyika kwa bulaketi yowotcherera ya LED. Pambuyo pake, msonkhanowo umayikidwa mu uvuni kuti uchiritse utomoni wa epoxy, ndipo potsiriza, LED imapangidwa pambuyo pochotsedwa mu nkhungu. Magawo ake amphamvu amsika angabwere chifukwa cha njira zowongoka zopangira komanso mitengo yampikisano.

Chifukwa cha kukwera msanga kwa chuma padziko lonse lapansi, pakali pano pakufunika kutero mwamsanga kuthetsa vuto la padziko lonse la kuchepa kwa mphamvu zamagetsi. Kumwa kwa kuwala ndi pafupifupi makumi awiri peresenti ya magetsi onse. Chimodzi mwa zinthu zofunika kwambiri zomwe zingatheke kuti tisunge mphamvu ndikuchepetsa mphamvu zomwe zimagwiritsidwa ntchito powunikira. Kusintha kutali ndi magwero amagetsi ochiritsira kukufulumizitsidwa ndi kugwiritsa ntchito nyali za LED zopanda mphamvu, zomwe zimakhala m'malo mwa kuunikira kwachilendo kwa incandescent.

Kodi mungagule kuti SED LED kuchokera pati?

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