Kuwonjezeka kwa Kutentha Kulimbana ndi Kuwala -Emitting Diode Structure

Kutsanulira tchipisi ta nyali za LED, luso losapakidwa posachedwapa layambitsa bizinesi yapamwamba kwambiri pamakampani a LED. Chifukwa cha mikanda yachikhalidwe ya nyali ya LED, mapangidwe a mapangidwe a kutentha kwapang'onopang'ono, kulephera kwa kuwala ndi zina zolepheretsa luso. LED nyali mkanda kuthira tchipisi ndi luso unpackaged kale zaka 10 zapitazo, mayiko akunja aganyali mu lalikulu kafukufuku likulu. The umalimbana mikanda nyali LED kuchokera gawo lapansi guluu ndi tirigu mwachindunji kuwotcherera luso. Imathetsedwa kwathunthu ndi mikanda ya nyali ya LED yokhazikika pamawonekedwe a matenda ambiri atsitsi, kulola mikanda ya nyali ya LED kuti ipirire kulolerana kwa kutentha komanso kukulitsa mikanda ya nyali ya LED. Makampaniwa ali ndi luso lapamwamba kwambiri pakuyika kwa mikanda ya nyali ya LED. & Kuwala kwa LED Daspeed Ndi angati wnbsp; koma funso ndilakuti: Chifukwa chiyani nyali ya LED ili ndi luso lothira luso? Kudalira ma substrates a aluminiyamu (mkuwa), kuumba kwa substrate ya ceramic, ndikuyika sikophweka ngati magawo azitsulo, chifukwa (kawiri) kuwotcherera kwa malata kuyenera kupirira madigiri 280 a kutentha kwakukulu, zomwe sizingathandize koma kuwononga zinthu ndi zigawo zikuluzikulu. Magawo a Ceramic ndi zitsulo zazitsulo sizokwera kwambiri kuposa momwe amawonetsera, ndipo kuwala kwanthawi kochepa kumakhala kovuta kusintha. Kutentha kocheperako kwa magawo a ceramic ndi malo olumikizirana ndi chip kumachepetsanso kukhazikika kwake kowala. Njira yothira mikanda ya nyali ya LED kawiri pa malata ndi kuwotcherera kwa malata ndi ceramic gawo lapansi la aluminiyamu gawo lapansi lapawiri kukana kwamafuta ndikokwanira kuthana ndi mphepo yam'mwamba yomwe yangotchulidwa kumene. Komanso, kutentha kuthamanga kuwotcherera ndi kuwotcherera reflux wa mikanda LED nyale ndi mkulu kwambiri, ndipo zokolola ndi wosakhazikika. Kuchokera kwa ogwiritsa ntchito mapeto, chipangizo chabwino cha LED chiyenera kukhala ndi kuwala kwabwinoko, ntchito zowunikira kwambiri, kutsika mtengo kwadongosolo komanso kubweza ndalama mwachangu. Kugwira luso lothira mikanda ya LED mtsogolomo (LM yuan) mtengo. Mwanjira ina, luso la kuyika kwa nyali za LED ndi luso lachitukuko ndi luso lopanga mabulaketi. COB LED nyali mkanda encapsulation ndi single -chip LED nyali mikanda ma CD wasonyeza mphamvu zambiri mawu amphamvu kuwala, kutentha dissipation, kugawa kuwala, mtengo, etc. Mikanda yachikhalidwe ya COB LED nyali tsopano ndi bulaketi yomwe imagwiritsa ntchito magawo a aluminiyamu (kapena mkuwa) kuti aphatikize bolodi la FR4 fiber kukhala imodzi. Mapiritsi apanyumba a FR-4 semi-curing, matenthedwe amafuta ndi 0.3 /m-k okha, khomo labwino kwambiri ndi 2.0/m-k kwa wamalonda, pomwe choyezera choyera cha aluminiyamu ndi 237 /m-k. Iyenera kuonjezera kutentha kwa dongosolo, kuchititsa kuti mikanda ya nyali ya LED iwonongeke ndikuchepetsa moyo wautumiki. Choncho, maganizo a anthu-to-maganizo maganizo kuthetsa kutchinjiriza CHIKWANGWANI cha gawo lapansi zotayidwa. “Chithunzi cha LMCOB ”(Kukumba chikopa chamkuwa ndi kutsekereza wosanjikiza wa gawo lapansi la aluminiyamu), koma zimangokhala chifukwa cha zida, gel osakaniza, ndondomeko ndi mtengo, ndipo sichinapitirirebe. Komanso, msika panopa ndi ambiri otchuka otchedwa “Gwero la kuwala kophatikizika ”Katswiri, kuvomereza njira yopangira jakisoni kuti ayikire mbale ya electrode mu PPA (kapena EMC yomwe ikukankhira pakali pano), chifukwa PPA idzakhala ufa wachikasu pansi pa kutentha kwambiri ndi kuwala kwa ultraviolet, zomwe zimapangitsa madzi kupuma ndi madzi. Kapangidwe kake ndi chifukwa mbale ya elekitirodi ndi yapamwamba kuposa chip 1.5 mlongo, ndipo mlingo wake wa fulorosenti ndi gel osakaniza ndi akale kwambiri. Sizidzangowonjezera mtengo wolongedza, ma colloid wandiweyani kwambiri amakhudzanso ma transmittance. Pakalipano, mabakiti onse a COB LED nyali alibe kupatulapo kukhazikitsa mpanda kuti atseke chisokonezo cha fulorosenti popanda kutayira, chifukwa gel dam ndi pamwamba mafuta oyera kuyamwa kuwala. Poyambirira, kuchulukira kwa kuwala ndi kutentha kwa mzindawu ndi chifukwa chofunikira pakuwunikira kwakanthawi kwamtundu wa COB LED nyale nyali gwero lowunikira komanso kuvutikira kwa kuwala kwanthawi zonse. Popanga mikanda ya nyali ya LED, funso lomwe limafunsidwa kawirikawiri la 5052LED ndi momwe mungasankhire magetsi oyendetsa, ndipo kwenikweni mikanda ya nyali ya LED imagwetsedwa kapena kuwonongedwa, ndipo gawo la mphamvu zoyendetsa ndiloyenera. Kuwala mikanda kuyatsa luso lalifupi bolodi. Komabe, ma COB LED nyali mikanda aluminiyamu gawo avomereza decentralized ma CD masanjidwe a mphamvu matenthedwe, ndipo (chip chimanenedwa mwachindunji pa gawo lapansi).