Nkhani - Ubwino ndi kuipa kwa COB yopakidwa skrini ya LED ndi zovuta zake zachitukuko

Ubwino ndi kuipa kwa COB yopakidwa skrini ya LED ndi zovuta zake zachitukuko

Ndi kupita patsogolo kopitilira muyeso kwaukadaulo wowunikira wokhazikika, ukadaulo wa COB (chip on board) walandira chidwi chochulukirapo.Monga gwero la kuwala kwa COB liri ndi mawonekedwe a kukana kwamafuta ochepa, kuchulukira kowala kwambiri, kuwala kocheperako, komanso kutulutsa kofananira, kwagwiritsidwa ntchito kwambiri pazowunikira zamkati ndi kunja, monga nyali yotsika, nyali ya babu, chubu la fulorosenti, nyali yamumsewu, ndi nyali ya mafakitale ndi migodi.

Pepalali likufotokoza za ubwino wa ma CD a COB poyerekeza ndi ma CD achikhalidwe a LED, makamaka kuchokera kuzinthu zisanu ndi chimodzi: ubwino wongoganizira, ubwino wopanga bwino, ubwino wochepa wa kutentha, ubwino wa kuwala, ubwino wa ntchito, ndi ubwino wamtengo wapatali, ndikufotokozera mavuto omwe alipo a teknoloji ya COB. .

Kusiyana pakati pa ma CD a COB ndi ma SMD

Ubwino wongoyerekeza wa COB:

1. Kupanga ndi chitukuko: popanda m'mimba mwake wa thupi limodzi la nyali, likhoza kukhala laling'ono m'lingaliro;

2. Njira zamakono: kuchepetsa mtengo wa bracket, kuchepetsa kupanga, kuchepetsa kukana kwa kutentha kwa chip, ndi kukwaniritsa ma CD apamwamba;

3. Kuyika kwaumisiri: Kuchokera kumbali yogwiritsira ntchito, gawo lowonetsera la COB LED lingapereke mosavuta komanso mofulumira kukhazikitsa bwino kwa opanga mbali yowonetsera ntchito.

4. Makhalidwe azinthu:

(1) Kuwala kopitilira muyeso ndi kuonda: matabwa a PCB okhala ndi makulidwe oyambira 0.4-1.2mm angagwiritsidwe ntchito molingana ndi zosowa zenizeni za makasitomala kuti achepetse kulemera kwa 1/3 yazinthu zoyambirira zachikhalidwe, zomwe zimatha kuchepetsa kwambiri kapangidwe kake. , ndalama zoyendera ndi zomangamanga kwa makasitomala.

(2) Kukana kugundana ndi kukana kukanikiza: Zinthu za COB zimatsekereza tchipisi ta LED m'malo opangira nyali a matabwa a PCB, kenako ndikuzimanga ndikuzilimbitsa ndi zomatira za epoxy resin.Pamwamba pa nsonga za nyali zimakwezedwa pamalo ozungulira, omwe ndi osalala, olimba, osagwira ntchito komanso osavala.

(3) Kuwoneka kwakukulu: mawonekedwe ake ndi aakulu kuposa madigiri a 175, pafupi ndi madigiri 180, ndipo ali ndi kuwala kowoneka bwino kwamtundu wamatope.

(4) Kuthekera kwamphamvu kwa kutentha kwamphamvu: Zogulitsa za COB zimayika nyali pa PCB, ndikusuntha mwachangu kutentha kwa nyali kudzera muzojambula zamkuwa pa PCB.The makulidwe mkuwa zojambulazo wa bolodi PCB ali okhwima ndondomeko zofunika.Ndi kuwonjezera kwa ndondomeko yoyika golide, sizingabweretse kuwala kwakukulu.Chifukwa chake, pali magetsi ochepa akufa, omwe amakulitsa kwambiri moyo wa chiwonetsero cha LED.

(5) Zovala zosagwira, zosavuta kuyeretsa: zosalala komanso zolimba, zosagwira ntchito komanso zosavala;Palibe chigoba, ndipo fumbi likhoza kutsukidwa ndi madzi kapena nsalu.

(6) Makhalidwe abwino kwambiri a nyengo: chithandizo chachitetezo cha katatu chimatengedwa, chokhala ndi madzi abwino kwambiri, chinyezi, dzimbiri, fumbi, magetsi osasunthika, oxidation ndi ultraviolet zotsatira;Imatha kukwaniritsa nyengo zogwirira ntchito, komanso kusiyana kwa kutentha kuchokera pa -30℃ku -80℃angagwiritsidwebe ntchito bwino.

Chidziwitso cha COB Packaging process

1. Ubwino pakupanga bwino

Kapangidwe ka ma CD a COB kwenikweni ndi ofanana ndi a SMD achikhalidwe, ndipo mphamvu ya ma CD a COB imakhala yofanana ndi ya ma CD a SMD popanga waya wokhazikika.Pankhani ya kugawa, kulekanitsa, kugawa kuwala ndi kuyika, mphamvu ya ma CD a COB ndi apamwamba kwambiri kuposa a SMD.Ndalama zogwirira ntchito ndi zopangira zopangira zachikhalidwe za SMD zimakhala pafupifupi 15% yamtengo wapatali, pomwe ndalama zogwirira ntchito ndi zopangira za COB zimatengera pafupifupi 10% yamtengo wake.Ndi COB kuyika, ndalama zogwirira ntchito ndi kupanga zitha kupulumutsidwa ndi 5%.

2. Ubwino wa kukana otsika kutentha

Kukana kwamatenthedwe azinthu zamapulogalamu amtundu wa SMD ndi: chip - zomatira zolimba za kristalo - cholumikizira cha solder - phala la solder - zojambula zamkuwa - zosanjikiza zoteteza - aluminiyamu.Kukana kwamafuta a COB ma CD ma CD ndi: chip - zomatira zolimba za kristalo - aluminiyamu.Kukaniza kwamafuta a phukusi la COB ndikotsika kwambiri kuposa phukusi lachikhalidwe la SMD, lomwe limasintha kwambiri moyo wa LED.

3. Kuwala khalidwe ubwino

M'mapaketi achikhalidwe a SMD, zida zingapo zophatikizika zimayikidwa pa PCB kuti zipange zida zowunikira pazogwiritsa ntchito za LED ngati zigamba.Njirayi ili ndi zovuta za kuwala kwa malo, kunyezimira ndi kuzizira.Phukusi la COB ndi phukusi lophatikizidwa, lomwe ndi gwero la kuwala pamwamba.Kuwona kwake ndi kwakukulu komanso kosavuta kusintha, kuchepetsa kutaya kwa refraction ya kuwala.

4. Ubwino wogwiritsa ntchito

Gwero la kuwala kwa COB limachotsa njira yokhazikitsira ndikuwonjezeranso kutulutsa kumapeto kwa ntchito, kumachepetsa kwambiri kupanga ndi kupanga kumapeto kwa ntchito, ndikusunga zida zofananira.Mtengo wa zida zopangira ndi zopangira ndizotsika, ndipo magwiridwe antchito ndi apamwamba.

5. Ubwino wamtengo

Ndi COB kuwala gwero, mtengo wa lonse nyali 1600lm chiwembu akhoza kuchepetsedwa ndi 24.44%, mtengo wa nyali lonse 1800lm chiwembu akhoza kuchepetsedwa ndi 29%, ndi mtengo wa nyali lonse 2000lm chiwembu akhoza kuchepetsedwa ndi 32.37%

Kugwiritsa ntchito gwero la kuwala kwa COB kuli ndi maubwino asanu pogwiritsa ntchito gwero loyatsira lachikhalidwe la SMD, lomwe lili ndi zabwino zambiri pakupangira magetsi, kukana kutentha, kuwala, kugwiritsa ntchito ndi mtengo.Mtengo wathunthu ukhoza kuchepetsedwa pafupifupi 25%, ndipo chipangizocho ndi chosavuta komanso chosavuta kugwiritsa ntchito, ndipo njirayo ndi yosavuta.

Mavuto amakono a COB aukadaulo:

Pakadali pano, kuchuluka kwamakampani a COB ndi tsatanetsatane wazinthu zikuyenera kukonzedwa, ndipo ikukumananso ndi zovuta zina zaukadaulo.

1. Chiwongoladzanja choyamba cha phukusi ndi chochepa, kusiyana kwake ndi kochepa, ndipo mtengo wokonza ndi wokwera;

2. Mtundu wake wopereka kufanana ndi wocheperako poyerekeza ndi chinsalu chowonetsera kumbuyo kwa chipangizo cha SMD chokhala ndi kuwala ndi kusiyana kwa mitundu.

3. Mapaketi a COB omwe alipo akugwiritsabe ntchito chip chokhazikika, chomwe chimafuna njira yolimba ya kristalo ndi waya.Choncho, pali mavuto ambiri mu ndondomeko waya kugwirizana, ndi zovuta ndondomeko ndi inversely proportional ndi pad dera.

4. Mtengo wopangira: chifukwa cha chiwongoladzanja chachikulu, mtengo wopangira zinthu ndi wapamwamba kwambiri kuposa malo ang'onoang'ono a SMD.

Kutengera pazifukwa zomwe zili pamwambazi, ngakhale ukadaulo waposachedwa wa COB wapangapo zina pagawo lowonetsera, sizitanthauza kuti ukadaulo wa SMD wasiya kutsika.M'munda momwe malo otalikirana ndi opitilira 1.0mm, ukadaulo wama CD wa SMD, wokhala ndi magwiridwe antchito okhwima komanso okhazikika, msika wamsika komanso dongosolo labwino kwambiri lokhazikitsa ndi kukonza, akadali udindo wotsogola, komanso ndi chisankho choyenera kwambiri. malangizo kwa ogwiritsa ntchito ndi msika.

Ndi kusintha kwapang'onopang'ono kwaukadaulo wazinthu za COB komanso kusinthika kwakukula kwa msika, kugwiritsa ntchito kwakukulu kwaukadaulo wamapakedwe a COB kudzawonetsa zabwino zake zaukadaulo ndi mtengo wake wosiyanasiyana wa 0.5mm ~ 1.0mm.Kuti mubwereke mawu kuchokera kumakampani, "kuyika kwa COB kumapangidwira 1.0mm ndi pansi".

MPLED ikhoza kukupatsirani chiwonetsero cha LED cha COB ma CD process, ndi ST Pro series zogulitsa zimatha kupereka mayankho otere. Chowonetsera chowonetsera cha LED chomalizidwa ndi kuyika kwa cob chili ndi malo ang'onoang'ono, omveka bwino komanso owoneka bwino kwambiri.Chip chotulutsa kuwala chimayikidwa mwachindunji pa bolodi la PCB, ndipo kutentha kumamwazikana mwachindunji kudzera pa bolodi.Mtengo wotsutsa kutentha ndi wochepa, ndipo kutentha kwa kutentha kumakhala kolimba.Kuwala pamwamba kumatulutsa kuwala.Kuwoneka bwino.