Raws li tus thauj cov cua sov thiab cua convection, cov thermal conductivity ntawm lub zog LED ntim PCB ua lub luag haujlwm tseem ceeb hauv kev ua kom sov cua sov LED. DPC ceramic PCB with its excellent performance and gradually reduced price, in many electronic packaging materials show a strong competitiveness, is the future power LED packaging development trend. Nrog rau kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis thiab kev tshwm sim ntawm kev npaj thev naus laus zis tshiab, cov khoom siv hluav taws xob ua kom sov siab ua cov khoom siv hluav taws xob tshiab PCB cov khoom siv tau nthuav dav heev.

LED ntim tshuab thev naus laus zis feem ntau tsim thiab hloov pauv los ntawm kev siv cov cuab yeej ntim khoom sib cais, tab sis nws muaj qhov tshwj xeeb zoo. Feem ntau, cov tub ntxhais ntawm cov cuab yeej sib cais tau muab ntim rau hauv lub cev pob khoom. Lub luag haujlwm tseem ceeb ntawm pob yog los tiv thaiv cov tub ntxhais thiab ua tiav kev sib txuas hluav taws xob. Thiab ntim LED yog ua kom tiav cov teeb hluav taws xob tso tawm, tiv thaiv kev ua haujlwm ib txwm ntawm lub raj tub ntxhais, tso tawm: pom lub teeb pom kev zoo, ob qho tsis muaj hluav taws xob, thiab ntsuas qhov muag ntawm kev tsim qauv thiab kev xav tau, tsis tuaj yeem yooj yim muab ntim khoom ntim rau LED.

Nrog kev txhim kho txuas ntxiv ntawm LED nti nkag lub zog, qhov ntau ntawm cov cua sov tsim los ntawm lub zog hluav taws xob tso tawm tso rau pem hauv ntej qhov xav tau ntau dua rau cov khoom ntim LED. Hauv LED cov cua sov ua kom sov, ntim PCB yog qhov tseem ceeb txuas rau sab hauv thiab sab nraud cov cua sov ua kom tawg, nws muaj lub luag haujlwm ua kom sov cua sov kis mus, txuas hauv Circuit Court thiab txhawb lub cev. Rau cov khoom siv hluav taws xob siab, ntim PCBS xav tau hluav taws xob rwb thaiv tsev, ua kom muaj cua sov siab thiab muaj cua sov nthuav dav coefficient txuam cov nti.

Cov kev daws teeb meem tam sim no yog txhawm rau txuas cov nti ncaj qha rau lub tshuab hluav taws xob tooj liab, tab sis cov tooj liab tooj liab yog nws tus kheej ua cov channel. As far as light sources are concerned, thermoelectric separation is not achieved. Thaum kawg, lub teeb pom kev zoo tau ntim rau ntawm PCB pawg thawj coj, thiab txheej txheej insulating tseem xav tau kom ua tiav cov thermoelectric sib cais. Txij ntawm no mus, txawm hais tias lub tshav kub tsis tau tsom rau ntawm lub nti, nws tau mloog zoo nyob ze rau txheej txheej insulating hauv qab lub teeb ci. Raws li lub zog nce, teeb meem cua sov tshwm sim. DPC ceramic substrate tuaj yeem daws qhov teeb meem no. Nws tuaj yeem txhim kho cov nti ncaj qha mus rau cov ceramic thiab tsim ib txoj kab sib txuas sib txuas qhov nyob rau hauv cov ceramic los tsim txoj kev ywj pheej sab hauv. Ceramics themselves are insulators, which dissipate heat. This is thermoelectric separation at the light source level.

Nyob rau xyoo tsis ntev los no, SMD LED txhawb nqa feem ntau siv cov khoom kub hloov kho cov khoom siv yas, siv PPA (polyphthalamide) cob ua raw khoom, thiab ntxiv cov hloov pauv hloov los txhim kho qee lub cev thiab tshuaj muaj zog ntawm PPA cov khoom siv raw. Yog li ntawd, cov ntaub ntawv PPA zoo dua rau kev txhaj tshuaj thiab siv SMD LED nkhaus. PPA cov cua sov ua kom sov yog qhov tsawg heev, nws cov cua sov ua kom sov feem ntau yog los ntawm cov hlau ua cov hlau, cov peev txheej ua kom sov sov tau txwv, tsuas yog tsim rau lub hwj chim qis LED ntim.

Txhawm rau daws qhov teeb meem ntawm kev sib cais thermoelectric ntawm qib teeb pom kev zoo, cov txheej txheej hauv qab yuav tsum muaj cov yam ntxwv hauv qab no: ua ntej, nws yuav tsum muaj cov cua sov ua kom sov siab, ntau qhov kev txiav txim ntawm qhov ntau dua li cov yas; Second, it must have high insulation strength; Third, the circuit has high resolution and can be connected or flipped vertically with the chip without problems. Qhov thib plaub yog qhov siab saum npoo av, yuav tsis muaj qhov sib txawv thaum vuam. Thib tsib, cov khoom siv hlau thiab cov hlau yuav tsum muaj cov nplaum siab; Qhov thib rau yog txoj kab sib txuas sib txuas ua ke hla lub qhov, yog li ua kom SMD kev ntim khoom coj los qhia cov kab hluav taws xob los ntawm sab nraub qaum mus rau pem hauv ntej. Tsuas yog cov txheej txheem uas ua tau raws li cov xwm txheej no yog DPC cov txheej txheem ceramic.

Ceramic substrate nrog cov cua sov ua kom muaj peev xwm tuaj yeem txhim kho cov cua sov ua kom zoo dua qub, yog cov khoom tsim nyog tshaj plaws rau kev tsim kho lub zog loj, me me LED. Ceramic PCB has new thermal conductivity material and new internal structure, which makes up for the defects of aluminum PCB and improves the overall cooling effect of PCB. Ntawm cov khoom siv tam sim no siv rau txias PCBS, BeO muaj cov cua sov ua kom siab, tab sis nws txoj kab nthuav dav nthuav dav sib txawv ntawm cov silicon, thiab nws cov tshuaj lom thaum lub sijhawm tsim khoom txwv nws tus kheej daim ntawv thov. BN muaj qhov ua tau zoo tag nrho, tab sis siv los ua PCB.

Cov khoom siv tsis muaj qhov zoo tshaj thiab kim. Tam sim no tau kawm thiab txhawb nqa; Silicon carbide muaj lub zog siab thiab ua kom muaj cua sov zoo, tab sis nws qhov kev tiv thaiv thiab rwb thaiv tsev tsis zoo, thiab kev sib xyaw ua ke tom qab kev siv hlau tsis ruaj khov, uas yuav ua rau muaj kev hloov pauv hauv cov cua sov ua kom sov thiab dielectric tas li tsis haum rau siv raws li insulating ntim khoom PCB.