(Ceramic SubstrateTsim los ntawmWintrusetk)
LEDs yog cov khoom siv hluav taws xob hluav taws xob semiconductor uas hloov pauv li ntawm 70% mus rau 80% ntawm lawv lub zog nkag mus rau hauv tshav kub. Yog tias qhov cua sov no tsis tuaj yeem ntws los ntawm lub substrate kom zoo, qhov nce hauv qhov kub thiab txias yuav ua rau poob rau hauv quantum efficiency, phosphor degradation, thiab acceleration ntawm cov cuab yeej lifespan.
Ib txwm hlau-core printed circuit boards (MCPCBs) muaj cov thermal tsis kam vim qhov yuav tsum tau polymer rwb thaiv tsev txheej ntawm cov hlau thiab Circuit Court txheej, ua rau lawv tsis muaj peev xwm ua tau raws li qhov xav tau ntawm cov cua kub dissipation ntawm high-power thiab ultra-high-power LEDs. Piv txwv li,ceramic substrateua ke rwb thaiv tsev thiab thermal conductivity, tshem tawm interfacial thermal kuj thiab dhau los ua ib qho kev sib txawv hauv kev lag luam evolution.
1. Alumina (Al2O3)
Alumina ceramics tam sim no yog cov khoom tsim thiab feem ntau siv cov khoom siv substrate. Nws nthuav tawm cov thermal conductivity ntawm 25-30 W / mK, zoo txhua yam muaj zog, thiab cov yam ntxwv zoo ntawm dielectric.
Qhov zoo:
Daim ntawv thov: Dav siv nyob rau hauv dav dav teeb pom kev zoo, cov neeg siv khoom siv hluav taws xob backlighting, thiab nruab nrab lub zog ntim modules.
2. Aluminium Nitride (AlN)
Rau lub zog siab COB thiab tsheb-qib laser teeb pom kev zoo, AlN sawv tawm vim nws cov thermal conductivity siab heev.
Qhov zoo:
Thermal conductivity ncav cuag 170-230 W / mK, kwv yees li yim npaug ntawm alumina
Thermal expansion coefficient yog sib xws nrog cov khoom siv semiconductor xws li silicon thiab silicon carbide, zoo heev txhim kho kev ruaj ntseg ntawm cov cuab yeej hauv thermal cycling ib puag ncig.
Daim ntawv thov: Automotive headlights, industrial high-power projectors, thiab UVC sib sib zog nqus ultraviolet purification khoom.
3. Silicon Nitride (Si3N4)
Silicon nitride hais txog kev sib tw ntawm cov khoom siv los ntawm cov tsoos ceramics, muaj cov pob txha tawv heev thiab lub zog flexural.
Qhov zoo:
Impact-resistant
Kev vibration-resistant
Zoo thermal conductivity
Daim ntawv thov: Tub rog-qib teeb pom kev zoo, aerospace optoelectronic cov cuab yeej, thiab industrial-qib LED modules xav tau kev ntseeg siab heev.
