Marka la habeynayo bandhigyada LED-ka, doorashada walaxda waxay si toos ah u saameyneysaa waxqabadka sheyga, adkeysiga, iyo soo bandhigida ugu dambeysa. Laga soo bilaabo iftiinka - soo saaraya jajabka ilaa alaabta baakadaha, laga bilaabo substrate PCB ilaa qaab dhismeedka guryeynta, go'aamada maadiga ah ee marxalad kasta waxay u baahan yihiin qiimeyn dhamaystiran oo ku salaysan xaaladda codsiga, xaaladaha deegaanka, iyo shuruudaha miisaaniyadda. Maqaalkani waxa uu falanqeynayaa sifooyinka walxaha ee qaybaha asaasiga ah si loo bixiyo hagitaan xirfadeed oo loogu talagalay baahiyaha gaarka ah.
Alaabta laambada LED: Saldhigga tayada iftiinka
Kuullaha LED-ku waa iftiinka xudunta u ah - walaxda soo saarta bandhigga, iyo alaabtoodu waxay si toos ah u saamaysaa dhalaalka, midabka midabka, iyo cimriga. Hadda, xalka guud waxa uu isticmaalaa gallium nitride (GaN)- chips ku salaysan oo lagu duubo epoxy ama resin silicone. Codsiyada sare - (sida shaashadaha xayaysiisyada dibadda), naxaasta -kuul nalalka ku salaysan ayaa la door bidaa sababtoo ah kulaylkooda sare ee daataan xadiidka, yaraynta suuska iftiinka. Ganaax gudaha ah- bandhigyada pitch, dhanka kale, waxay u janjeeraan inay isticmaalaan EMC (epoxy molding compound) encapsulation, kaas oo isticmaala kulayl aad u sareeya{8}}si loo gaadho xakamaynta garoonka pixel oo xasilan. Baahiyaha gaarka ah, sida codsiyada ultraviolet ama infrared, kuulyo gaar ah oo leh AlGaInP ama InGaN{10}chips ku salaysan ayaa loo baahan yahay.
Substrate PCB: Isku-dheellitirka Waxqabadka Korontada iyo Diridka Kulaylka
Xulashada agabka looxyada wareegyada daabacan (PCBs) waa in ay dheelli tiraan socodka korantada iyo kulaylka. Alaabooyinka caadiga ah waxay inta badan isticmaalaan FR -4 loox fiberglass ah (qiimaynta ololka UL94-V0), ku haboon bay'ada gudaha. Si kastaba ha ahaatee, bandhigyada awooda sare -cufnaanta ama sare{8}}(sida shaashadaha kirada iyo garoommada), aluminium{11}}PCB-yada ku salaysan (MCPCBs) ama naxaasta{13}PCBs ku salaysan waxay bixiyaan faa'iidooyin. Qaybaha birta ah waxay si dhakhso ah u baabi'iyaan kulaylka, iyagoo ka hortagaya kulaylka gudaha iyo pixel failure. Mashruucyada dhamaadka-sare xitaa waxay isticmaalaan substrates dhoobada (sida aluminium nitride, AlN). In kasta oo ay ka qaalisan yihiin, substrate-yadani waxay awood u siinayaan qaabaynta wareegyada aadka- saxda ah ilaa heerka millimitirka.
Ku-xiran iyo Qaab-dhismeedka Ilaalinta: Dammaanadda Muhiimka ah ee La-qabsiga Deegaanka
Shaashadaha gaarka ah ee dibadda waa inay lahaadaan qiimeynta ilaalinta la xoojiyay (IP65 ama ka sare). Xirashooyinka waxaa sida caadiga ah laga soo dhisay dhinta{2}}aluminiumka la shubay ama agabka kaarboonka. Kii hore waxa uu isticmaalaa hab wax-is-beddelid isku-dhafan si loo hubiyo awoodda qaab-dhismeed iyada oo sidoo kale bixisa kulayl aad u fiican. Midka dambe waa mid fudud oo ku habboon codsiyada kirada ee u baahan isu-urursi joogto ah iyo kala diris. Marka laga hadlayo daawaynta dusha sare, UV{6} dahaarka u adkaysta iyo ilaalinta daxalka buufinta milixdu waa lama huraan. Khaasatan meelaha xeebaha ah ama meelaha roobka ka da'o, waxaa lagula talinayaa xal laba lakab ah oo bir galvanized ah iyo nano{9}}
Darawalka IC-yada iyo Xargaha: Furaha Qarsoon ee Gudbinta Calaamadaha
Walxaha baakadaha ee dareewalka isku dhafka ah ee wareegga (IC) waxay saameeyaan xawaaraha jawaabta iyo xasilloonida. Tusaale ahaan, baakadaha isku dhafan ee COB (Chip on Board) waxay si toos ah u sugaan jajabka leh resin epoxy, hoos u dhigista qiimaha jabka wadajirka ah ee alxanka; Xirmooyinka dhaqanka ee SMD waxay ku tiirsan yihiin awoodaha xakamaynta arc ee tayada sare ee FR-4 substrates. Xadhkaha xoogga iyo calaamaduhu waa inay adeegsadaan ogsijiin{5}} xudunta naxaasta ee bilaashka ah oo leh{{7} qaab dhismeedka gaashaanka oo labajibbaaran. Mashaariicda bannaanka, daboolka sare ee caagga ah ee PVC ama silikoonka u adkaysta ayaa lagula talinayaa si looga hortago in dahaarka ay sababto gabowga UV.
Gabagabo: Habayntu waa inay buuxisaa shuruudaha xaaladeed
Material selection isn't a matter of single parameters; it's a systematic process based on factors such as brightness requirements (e.g., >8000 nits bannaanka vs.<1000 nits indoors), environmental harshness (temperature, humidity, dust, vibration), and maintenance cycles. We recommend that users communicate in depth with manufacturers during the initial stages of customization, using methods such as finite element analysis (FEA) to simulate thermal distribution and salt spray testing to verify corrosion resistance, to ensure that the final solution achieves optimal performance while maintaining controllable costs.
