Ib yam li cov khw muag khoom kho vajtse yuav tsum tau tswj thiab tso saib cov ntsia hlau thiab cov ntsia hlau ntawm ntau hom, metric, cov khoom siv, qhov ntev, qhov dav thiab lub suab, thiab lwm yam, PCB tsim kuj yuav tsum tau tswj cov khoom tsim xws li qhov, tshwj xeeb tshaj yog nyob rau hauv high-density tsim. Cov qauv PCB ib txwm siv tsuas yog siv ob peb qhov sib txawv ntawm qhov sib txawv, tab sis niaj hnub no cov kev sib txuas siab siab (HDI) tsim yuav tsum muaj ntau yam sib txawv thiab qhov ntau thiab tsawg ntawm qhov dhau qhov. Txhua lub qhov hla yuav tsum tau tswj kom raug siv kom raug, kom ntseeg tau qhov siab tshaj plaws ntawm pawg thawj coj saib thiab kev tsim khoom tsis raug yuam kev. Tsab ntawv xov xwm no yuav piav qhia txog qhov yuav tsum tau tswj hwm qhov ceev ntawm lub qhov hauv PCB tsim thiab yuav ua li cas thiaj ua tiav qhov no.
Cov yam tseem ceeb uas tsav high-density PCB tsim
Raws li qhov kev thov rau cov khoom siv hluav taws xob me me txuas ntxiv zuj zus, cov ntawv luam tawm Circuit Court boards uas lub zog ntawm cov cuab yeej no yuav tsum tau qis kom haum rau lawv. Nyob rau tib lub sijhawm, txhawm rau ua kom tau raws li qhov yuav tsum tau ua ntawm kev txhim kho kev ua haujlwm, cov khoom siv hluav taws xob yuav tsum tau ntxiv cov khoom siv thiab cov khoom siv hluav taws xob ntau ntxiv rau ntawm lub rooj tsavxwm. Qhov loj ntawm PCB cov khoom siv tas li yuav txo qis, thiab cov pins tau nce zuj zus, yog li koj yuav tsum siv cov pins me me thiab qhov sib ze ze rau kev tsim, uas ua rau qhov teeb meem nyuaj dua. Rau cov neeg tsim qauv PCB, qhov no yog qhov sib npaug ntawm lub hnab ntim tau me dua thiab me dua, thaum tuav ntau thiab ntau yam hauv nws. Cov txheej txheem niaj hnub ntawm Circuit Board tsim sai sai ncav cuag lawv cov kev txwv.
Txhawm rau kom ua tau raws li qhov xav tau ntxiv cov circuits ntxiv rau lub rooj tsav xwm me me, ib txoj kev tsim PCB tshiab tau los ua - high-density Interconnect, lossis HDI. Tus tsim HDI siv cov txheej txheem tsim hluav taws xob ntau dua, cov kab dav me me, cov ntaub ntawv nyias, thiab qhov muag tsis pom thiab faus lossis laser-drilled microholes. Ua tsaug rau cov yam ntxwv kub no, ntau dua cov kab ke tuaj yeem muab tso rau ntawm lub rooj sib txuas me me thiab muab cov tshuaj sib txuas tau zoo rau ntau tus pin sib xyaw ua ke.
Muaj ob peb lwm yam txiaj ntsig ntawm kev siv cov qhov siab ntom ntom no:
Cov kab mob channel:Txij li thaum qhov muag tsis pom thiab faus qhov thiab microholes tsis nkag mus rau txheej txheej, qhov no tsim cov kab txuas ntxiv hauv kev tsim. Los ntawm kev muab cov kev sib txawv ntawm qhov sib txawv, cov neeg tsim qauv tuaj yeem xaim cov cuab yeej nrog ntau pua tus pins. Yog tias tsuas yog siv cov txheej txheem los ntawm qhov, cov khoom siv nrog ntau tus pins feem ntau yuav thaiv tag nrho cov kab txuas sab hauv.
Teeb liab kev ncaj ncees:Ntau lub teeb liab ntawm cov khoom siv hluav taws xob me me kuj tseem muaj cov teeb liab tshwj xeeb uas yuav tsum tau ua, thiab dhau ntawm qhov tsis ua raws li cov qauv tsim. Cov qhov no tuaj yeem tsim cov kav hlau txais xov, qhia txog EMI teeb meem, lossis cuam tshuam rau lub teeb liab rov qab txoj hauv kev tseem ceeb. Kev siv cov qhov muag tsis pom kev thiab faus lossis microholes tshem tawm cov teeb meem kev ncaj ncees uas tshwm sim los ntawm kev siv los ntawm qhov.
Txhawm rau kom nkag siab zoo dua cov kev dhau-qhov no, cia peb saib ntau yam ntawm cov qhov sib txawv uas tuaj yeem siv tau rau hauv cov qauv siv high-density thiab lawv daim ntawv thov.
Hom thiab qauv ntawm high-density interconnection qhov
Lub qhov hla yog ib lub qhov ntawm lub rooj tsavxwm Circuit Court uas txuas ob lossis ntau txheej. Feem ntau, lub qhov xaim xaim hluav taws xob nqa los ntawm Circuit Court los ntawm ib txheej ntawm lub rooj tsavxwm mus rau cov khoom sib txuas ntawm lwm txheej. Txhawm rau ua cov teeb liab ntawm cov txheej thaiv, cov qhov yog metallized thaum lub sijhawm tsim khoom. Raws li kev siv tshwj xeeb, qhov loj ntawm lub qhov thiab lub ncoo yog qhov sib txawv. Cov me me los ntawm qhov yog siv rau cov teeb liab thaiv, thaum lub qhov loj los ntawm qhov yog siv rau lub zog thiab hauv av thaiv, los yog los pab cov khoom siv cua sov.
Ntau hom qhov ntawm lub rooj tsav xwm Circuit Court
dhau-qhov
Qhov dhau-qhov yog tus qauv dhau-qhov uas tau siv rau ntawm ob sab ntawm cov ntawv luam tawm Circuit Board txij thaum lawv tau pib ua ntej. Lub qhov yog mechanically drilled los ntawm tag nrho cov Circuit Court board thiab yog electroplated. Txawm li cas los xij, qhov tsawg kawg nkaus bore uas tuaj yeem drilled los ntawm ib tug neeg kho tshuab xyaum muaj qee yam kev txwv, nyob ntawm seb qhov sib piv ntawm lub laum txoj kab uas hla mus rau lub phaj thickness. Feem ntau hais lus, lub aperture ntawm lub qhov yog tsis tsawg tshaj li 0.15 hli.
Qhov muag qhov muag:
Zoo li dhau-qhov, lub qhov yog drilled mechanically, tab sis nrog ntau cov kauj ruam tsim, tsuas yog ib feem ntawm lub phaj yog drilled los ntawm qhov chaw. Qhov muag tsis pom kev kuj ntsib qhov teeb meem ntawm kev txwv me ntsis; Tab sis nyob ntawm seb peb nyob rau sab twg, peb tuaj yeem xaim saum toj lossis hauv qab lub qhov muag tsis pom.
faus qhov:
Cov qhov faus, zoo li qhov qhov muag tsis pom, yog drilled mechanically, tab sis pib thiab xaus rau hauv txheej sab hauv ntawm lub rooj tsavxwm es tsis yog qhov chaw. Qhov no los ntawm lub qhov tseem yuav tsum tau ua cov txheej txheem tsim khoom ntxiv vim qhov yuav tsum tau muab tso rau hauv cov phaj pawg.
Micropore
Qhov no perforation yog ablated nrog ib tug laser thiab lub aperture yog tsawg tshaj li 0.15 hli txwv ntawm ib tug mechanical laum ntsis. Vim tias cov microholes tsuas yog ob txheej nyob ib sab ntawm lub rooj tsavxwm, qhov sib piv ua rau lub qhov muaj rau plating ntau dua. Microholes tuaj yeem muab tso rau ntawm qhov chaw lossis sab hauv ntawm lub rooj tsavxwm. Cov microholes feem ntau yog sau thiab plated, qhov tseem ceeb zais, thiab yog li ntawd tuaj yeem muab tso rau hauv cov khoom siv saum npoo ntawm cov khoom xws li pob kab sib chaws (BGA). Vim lub aperture me me, lub ncoo xav tau rau lub microhole kuj tseem me dua li qhov zoo tib yam, txog 0.300 hli.
Raws li kev tsim qauv, qhov sib txawv ntawm qhov saum toj no tuaj yeem tsim kho kom lawv ua haujlwm ua ke. Piv txwv li, micropores tuaj yeem muab tso nrog lwm cov micropores, nrog rau cov qhov faus. Cov qhov no kuj tuaj yeem ua rau staggered. Raws li tau hais ua ntej, microholes tuaj yeem muab tso rau hauv cov ntaub qhwv ntsej nrog cov pins ntog. Qhov teeb meem ntawm kev xaim congestion yog txuas ntxiv los ntawm qhov tsis muaj qhov kev coj ua ntawm lub ntsej muag mount ncoo mus rau lub qhov hluav taws xob kiv cua.