Alumina, los yog txhuas oxide (Al2O3), yog siv los ua cov khoom siv substrate hauv ntau daim ntawv thov hluav taws xob. Lub dielectric qhov tsis tu ncua ntawm alumina feem ntau poob rau hauv thaj tsam ntawm 9.0 txog 10.0. Cov cuab yeej no ua rau alumina tshwj xeeb tshaj yog xav tau rau kev siv hauv kev sib xyaw ua ke thiab lwm yam khoom siv hluav taws xob.
Dab tsi yog Dielectric Constant
Lub dielectric tas li, tseem hu ua tus txheeb ze permittivity, yog ib qho kev ntsuas ntawm cov khoom muaj peev xwm khaws hluav taws xob hauv hluav taws xob. Cov cuab yeej no tseem ceeb heev rau insulating cov khaubncaws sab nraud povtseg thiab txhawb nqa tag nrho kev ua haujlwm ntawm cov khoom siv hluav taws xob thaum nws los txog rau alumina substrates. Qhov siab dielectric tas li ntawm alumina pab txhawb rau nws cov hauj lwm zoo hauv cov luag haujlwm no. Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias qhov sib txawv xws li hom alumina siv, nws cov qauv siv lead ua, thiab muaj cov impurities tuaj yeem cuam tshuam rau qhov tseeb dielectric tas li.
Kev siv ntawm Alumina Substrate
Hauv thaj tsam ntawm kev tsim hluav taws xob, alumina substrates pom daim ntawv thov hauv ntau qhov chaw xws li cov khoom siv hluav taws xob semiconductor thiab kev sib xyaw ua ke. Lub dielectric qhov tsis tu ncua yog qhov tseem ceeb hauv kev tsim thiab kev ua haujlwm ntawm cov hluav taws xob circuits. Alumina substrates ua kom yooj yim rau cov khoom siv hluav taws xob ua haujlwm zoo los ntawm kev muab cov txheej txheem insulating ruaj khov thiab txhim khu kev qha.
Vim tias alumina muaj lub siab dielectric tas li thiab lwm yam khoom zoo xws li cov thermal conductivity thiab txhua yam muaj zog, nws tuaj yeem siv rau hauv ntau yam kev siv hluav taws xob sib txawv. Cov kws tsim qauv thiab cov kws tsim qauv ua tib zoo xav txog cov yam ntxwv ntawm cov khoom siv no thaum xaiv cov substrates rau cov khoom siv hluav taws xob, kom ntseeg tau tias kev ua tau zoo thiab kev ntseeg siab. Yeej, alumina lub dielectric tas li yog ib qho tseem ceeb tshaj plaws hauv kev ua cov tshuab hluav taws xob zoo dua vim tias nws ua rau nws muaj peev xwm tsim cov khoom siv hluav taws xob zoo thiab muaj txiaj ntsig zoo.
