(Substrate dhoobadaWaxaa soo saarayWintrusetk)
LED-yadu waa aaladaha semiconductor-ka ee korantada oo u beddela ku dhawaad 70% ilaa 80% awooda ay siiyeen kulayl. Haddii kulaylkan aan si habboon loogu daadin karin substrate-ka, kororka heerkulka isgoysyada wuxuu keeni doonaa hoos u dhac ku yimaada waxtarka quantum-ka gudaha, xaalufka fosfoor, iyo dardargelinta cimriga aaladda.
Loox-dhaqameedyada daabacan ee birta ah (MCPCBs) waxay leeyihiin iska caabin heerkul sare ah oo ay ugu wacan tahay lakabka dahaadhka polymer ee loo baahan yahay ee u dhexeeya lakabyada birta iyo wareegga, taasoo ka dhigaysa inay sii kordheyso awood la'aan inay buuxiso baahida kuleylka kuleylka ee tamarta sare iyo ultra-high-power LEDs. Taas bedelkeeda,substrates dhoobadaisku darka dahaarka iyo kuleylka kuleylka, baabi'inta caabbinta kulaylka wejiyada dhexdooda iyo noqoshada isbeddel aan laga fursan karin ee horumarka warshadaha.
1. Alumina (Al2O3)
Alumina ceramik hadda waa shayga substrate-ka ugu dhisan uguna badan ee la isticmaalo. Waxay soo bandhigaysaa kulaylka heerkulka joogtada ah ee 25-30 W/m.K, xoog farsamo oo wanaagsan, iyo sifooyin dielectric heer sare ah.
Faa'iidooyinka
Codsiyada: Si weyn loogu isticmaalo iftiinka guud, iftiinka dambe ee elektiroonigga macaamiisha, iyo qaybaha baakadaha awoodda dhexdhexaadka ah.
2. Aluminium Nitride (AlN)
Awoodda sare ee COB iyo iftiinka laysarka ee heerka baabuurta, AlN ayaa u taagan yahay kuleylkeeda aadka u sarreeya.
Faa'iidooyinka
Kuleylku wuxuu gaaraa 170-230 W/m.K, qiyaastii sideed jeer ka badan alumina
Isku-dhafka fidinta kulaylka ayaa si aad ah ugu habboon agabka semiconductor sida silikoon iyo silikoon carbide, oo si weyn u wanaajinaya xasilloonida makaanikada aaladaha kuleyliyaha baaskiillada
Codsiyada: Nalalka hore ee baabuurta, mashruucyada tamarta sare leh ee warshadaha, iyo qalabka sifaynta ultraviolet qoto dheer ee UVC.
3. Silikon Nitride (Si3N4)
Silicon nitride waxa ay wax ka qabataa caqabada farsamo ee jabka soo jireenka ah ee dhoobada dhaqameed, lehna adkeyd aad u sareysa oo jaban iyo xoog dabacsanaan.
Faa'iidooyinka
Codsiyada: Iftiinka heerka militariga, qalabka hawada sare ee indhaha, iyo qaybaha LED-ka heerka warshadaha oo u baahan isku haleyn aad u sareysa.
