HDI lub rooj tsavxwm(High Density Interconnector), tseem hu ua high-density interconnect board, yog Circuit Court board uas siv micro dig muag faus qhov tshuab thiab muaj cov kab sib txuas siab heev. HDI board muaj cov xov hlau sab hauv thiab sab nraud
Los ntawm kev siv cov txheej txheem xws li drilling thiab lub qhov metallization, kev sib txuas sab hauv ntawm txhua txheej ntawm lub voj voog yog tiav.
HDI boards feem ntau yog tsim los siv cov txheej txheem stacking, thiab ntau lub sij hawm lawv stacked, qhov siab dua cov txheej txheem ntawm lub rooj tsavxwm. Ordinary HDI boards yog ib qho txheej txheem ib zaug, thaum kev txiav txim siab dua HDI siv ob lossis ntau txheej txheej txheej txheem, nrog rau cov thev naus laus zis PCB xws li cov qhov sib tshooj, electroplating filling qhov, thiab laser ncaj qha drilling. Thaum qhov ceev ntawm PCBs nce ntau tshaj yim txheej, kev tsim khoom nrog HDI yuav ua rau cov nqi qis dua piv rau cov txheej txheem txheej txheem nyuaj.
Cov hluav taws xob ua tau zoo thiab cov teeb liab raug ntawm HDI boards yog siab dua li cov PCBs. Tsis tas li ntawd, HDI boards muaj kev txhim kho zoo dua hauv xov tooj cua zaus cuam tshuam, electromagnetic yoj cuam tshuam, electrostatic paug, thermal conduction, thiab lwm yam. High density integration (HDI) technology can make terminal product design more miniaturized, thaum ua tau raws cov qauv siab dua ntawm kev siv hluav taws xob thiab kev ua haujlwm zoo.
Lub Rooj Tswjhwm Saib HDI siv qhov muag tsis pom qhov electroplating ua raws li kev nias thib ob, muab faib ua thawj, thib ob, thib peb, plaub, thiab thib tsib. Thawj kauj ruam yog qhov yooj yim, thiab cov txheej txheem thiab txheej txheem yog yooj yim los tswj. Cov teeb meem tseem ceeb ntawm qhov kev txiav txim thib ob yog kev sib tw thiab xuas nrig ntaus thiab tooj liab plating. Muaj ntau yam kev txiav txim thib ob, ib qho yog kom stagger cov haujlwm ntawm txhua theem thiab txuas cov txheej txheem thib ob los ntawm cov xov hlau hauv nruab nrab txheej, uas yog sib npaug rau ob qhov kev txiav txim thawj HDIs. Txoj kev thib ob yog sib tshooj ob qhov kev txiav txim thawj zaug thiab ua tiav qhov kev txiav txim thib ob los ntawm superposition. Kev ua haujlwm kuj zoo ib yam li ob qhov kev txiav txim thawj zaug, tab sis muaj ntau yam txheej txheem uas yuav tsum tau tswj tshwj xeeb, uas tau hais los saum toj no. Qhov thib peb txoj kev yog ncaj qha laum qhov los ntawm txheej txheej mus rau txheej thib peb (lossis N-2 txheej), nrog ntau cov txheej txheem sib txawv thiab nyuaj dua hauv kev drilling. Rau qhov kev txiav txim thib peb, qhov kev txiav txim thib ob yog qhov piv txwv.
PCB, tseem hu ua pawg thawj coj saib hluav taws xob hauv Suav teb, yog cov khoom siv hluav taws xob tseem ceeb uas txhawb nqa cov khoom siv hluav taws xob thiab ua lub luag haujlwm rau kev sib txuas hluav taws xob ntawm cov khoom siv hluav taws xob. Lub rooj tsav xwm zoo tib yam PCB feem ntau yog FR-4, uas yog tsim los ntawm nias epoxy resin thiab hluav taws xob qib iav ntaub.