Qhov kom zoo dua ntawm HDI PCB

Cia peb ua tibzoo saib ntawm qhov cuam tshuam. Kev nce pob khoom ceev tso cai rau peb kom luv txoj hauv kev ntawm cov khoom siv hluav taws xob. Nrog HDI, peb tau nce tus naj npawb ntawm cov kab txuas ntawm cov txheej sab hauv ntawm PCB, yog li txo tag nrho cov txheej txheem xav tau rau kev tsim. Txo cov txheej txheej tuaj yeem tso ntau qhov kev sib txuas ntawm tib lub rooj tsavxwm thiab txhim kho cov khoom sib txuas, txuas thiab txuas. From there, we can focus on a technique called interconnect per Layer (ELIC), which helps design teams move from thicker boards to thinner flexible ones to maintain strength while allowing the HDI to see functional density.

HDI PCB rely on lasers rather than mechanical drilling. In turn, the HDI PCB design results in a smaller aperture and smaller pad size. Txo qhov lub qhov taub tso cai rau pab pawg tsim los txhawm rau teeb tsa thaj tsam ntawm pawg thawj coj saib. Txoj hauv kev hluav taws xob luv thiab ua kom muaj kev sib txuas ntau ntxiv txhim kho lub teeb liab ncaj ncees ntawm kev tsim qauv thiab ua kom cov teeb liab ua tiav. Peb tau txais txiaj ntsig ntxiv hauv qhov ntom ntom vim tias peb txo qhov muaj feem ntawm cov teeb meem inductance thiab lub peev xwm.

HDI PCB tsim tsis siv los ntawm qhov, tab sis qhov muag tsis pom thiab faus qhov. Staggered thiab raug tso rau qhov faus thiab qhov muag tsis pom qhov txo cov neeg kho tshuab siab ntawm lub phaj thiab tiv thaiv txhua txoj hauv kev ntawm kev ua rog. Ib qho ntxiv, koj tuaj yeem siv teeb tsa los ntawm qhov ua kom txhim kho cov ntsiab lus sib txuas thiab txhim kho kev ntseeg tau. Koj siv cov ntaub qhwv kuj tseem tuaj yeem txo qis teeb liab los ntawm kev txo qis hla thiab txo cov kab mob cuam tshuam.

HDI kev tsim khoom xav tau kev sib koom tes

Kev tsim khoom tsim tawm (DFM) xav tau kev txawj ntse, meej PCB tsim txoj hauv kev thiab kev sib txuas lus zoo ib yam nrog cov tuam ntxhab thiab cov chaw tsim khoom. Raws li peb tau ntxiv HDI rau DFM cov ntaub ntawv, ua tib zoo saib ntawm kev tsim, tsim khoom, thiab kev tsim khoom tau dhau los ua qhov tseem ceeb dua thiab kev sib dhos thiab teeb meem yuav tsum tau hais daws. Hauv ntej, tsim, qauv tsim thiab txheej txheem tsim khoom ntawm HDI PCBS xav tau kev sib koom tes ua haujlwm thiab saib xyuas tshwj xeeb cov cai DFM siv rau txoj haujlwm.

Ib qho ntawm qhov tseem ceeb ntawm HDI tsim (siv laser drilling) yuav dhau qhov kev muaj peev xwm ntawm cov chaw tsim khoom, cov khoom sib dhos, lossis cov chaw tsim khoom, thiab xav tau kev sib txuas lus ncaj qha hais txog qhov raug thiab hom drilling system xav tau. Vim tias qis dua tus nqi qhib thiab ntau dua txheej txheej ntawm HDI PCBS, pab pawg tsim qauv yuav tsum xyuas kom cov tuam ntxhab thiab cov chaw tsim khoom tuaj yeem ua tau raws li kev sib dhos, rov ua haujlwm thiab vuam xav tau ntawm HDI tsim. Yog li ntawd, tsim pab pawg ua haujlwm ntawm HDI PCB cov qauv tsim yuav tsum paub zoo hauv cov txheej txheem nyuaj siv los tsim cov laug cam.

Paub koj cov khoom siv hluav taws xob thiab cov lus qhia tshwj xeeb

Vim tias HDI kev tsim khoom siv ntau hom txheej txheem laser drilling, kev sib tham ntawm pab pawg tsim qauv, cov chaw tsim khoom thiab cov chaw tsim khoom yuav tsum tsom mus rau cov khoom siv ntawm cov laug cam thaum tham txog cov txheej txheem drilling. Daim ntawv thov cov khoom lag luam uas ua kom cov txheej txheem tsim khoom tuaj yeem muaj qhov loj me thiab qhov hnyav xav tau uas txav kev sib tham hauv ib qho lossis lwm qhov. Kev thov ntau zaus yuav xav tau cov ntaub ntawv uas tsis yog tus qauv FR4. Ib qho ntxiv, kev txiav txim siab txog hom khoom FR4 cuam tshuam rau kev txiav txim siab txog kev xaiv cov txheej txheem drilling lossis lwm yam peev txheej tsim khoom. Thaum qee lub tshuab siv los ntawm tooj liab yooj yim, lwm tus tsis cuam tshuam nrog cov iav fiber ntau.

Ntxiv nrog rau xaiv cov khoom siv kom raug, pab pawg tsim qauv yuav tsum xyuas kom meej tias cov chaw tsim khoom thiab cov chaw tsim khoom tuaj yeem siv cov phaj tuab tuab thiab cov txheej txheem plating raug. Nrog rau kev siv laser drilling, qhov sib piv qhov sib txawv qis thiab qhov sib piv qhov tob ntawm qhov uas siv rau plating txhaws txo qis. Txawm hais tias cov phaj tuab tso cai rau lub qhov me me, qhov xav tau ntawm cov phiaj xwm ntawm qhov haujlwm tuaj yeem hais qhia cov phaj nyias nyias uas ua rau tsis ua raws qee qhov xwm txheej ib puag ncig. Pab neeg tsim qauv yuav tsum txheeb xyuas tias cov chaw tsim khoom muaj peev xwm siv “txheej txheej sib txuas” txheej txheem thiab siv qhov taub ntawm qhov tob raug, thiab xyuas kom meej tias cov tshuaj siv tshuaj rau electroplating yuav ua rau lub qhov.

Siv ELIC thev naus laus zis

DESIGN ntawm HDI PCBS ib puag ncig ELIC thev naus laus zis tau pab pawg tsim qauv tsim kho kom zoo dua qub PCBS, uas suav nrog ntau txheej txheej ntawm cov tooj liab sib xyaw ua ke ua cov microholes hauv ncoo. Raws li qhov tshwm sim ntawm ELIC, PCB tsim qauv tuaj yeem ua kom zoo dua ntawm qhov ntom ntom ntom ntom, kev sib txuas sib txuas uas xav tau rau kev siv hluav taws xob nrawm. Vim tias ELIC siv cov txheej tooj liab uas muaj cov tooj liab sib sau ua ke rau kev sib txuas, nws tuaj yeem txuas nrog ntawm ob txheej uas tsis muaj zog ua rau pawg thawj coj saib xyuas tsis muaj zog.

Kev xaiv cov khoom cuam tshuam rau kev teeb tsa

Ib qho kev sib tham nrog cov tuam txhab thiab cov tsim khoom hais txog HDI tsim qauv yuav tsum tsom mus rau qhov tseeb txheej txheem ntawm cov khoom sib txuam siab. Kev xaiv cov khoom cuam tshuam rau thaiv dav, txoj haujlwm, pawg thiab qhov loj. Piv txwv li, HDI PCB tsim qauv feem ntau suav nrog cov pob ntom ntom kab (BGA) thiab qhov sib nrug zoo BGA uas xav tau tus pin khiav. Cov xwm txheej uas cuam tshuam rau lub hwj chim thiab teeb liab kev ncaj ncees nrog rau lub cev ruaj khov ntawm pawg thawj coj yuav tsum raug lees paub thaum siv cov khoom siv no. Cov xwm txheej no suav nrog ua tiav qhov tsim nyog cais tawm ntawm txheej txheej saum toj thiab hauv qab kom txo qis kev sib koom ua ke thiab tswj EMI ntawm cov teeb liab sab hauv.Cov khoom sib txuam sib npaug sib npaug yuav pab tiv thaiv kev ntxhov siab tsis sib xws ntawm PCB.

Ua tib zoo mloog lub teeb liab, lub zog thiab lub cev ncaj ncees

Ntxiv rau kev txhim kho teeb liab kev ntseeg siab, koj tseem tuaj yeem txhim kho lub zog ncaj ncees. Vim tias HDI PCB txav cov txheej hauv av ze rau saum npoo, lub zog muaj zog tau zoo dua. Sab saum toj txheej ntawm pawg thawj coj muaj txheej txheej hauv av thiab txheej txheej fais fab, uas tuaj yeem txuas nrog txheej av hauv av los ntawm qhov muag tsis pom lossis microholes, thiab txo tus lej ntawm lub dav hlau qhov.

HDI PCB txo cov naj npawb ntawm qhov hla los ntawm txheej sab hauv ntawm pawg thawj coj saib. Nyob rau hauv lem, txo tus naj npawb ntawm perforations hauv lub dav hlau fais fab muab peb qhov zoo loj:

Cov cheeb tsam tooj liab loj dua pub AC thiab DC tam sim no rau hauv lub zog fais fab tus pin

L tsis kam txo qis hauv txoj kev tam sim no

L Vim tias qhov qis qis, qhov hloov pauv raug tam sim no tuaj yeem nyeem tus lej fais fab.

Lwm qhov ntsiab lus tseem ceeb ntawm kev sib tham yog kom muaj kab dav dav yam tsawg kawg nkaus, sib nrug kom nyab xeeb thiab taug qab qhov sib xws. Ntawm qhov teeb meem tom kawg, pib ua tiav cov tooj liab tuab tuab thiab thaiv cov kab sib xws thaum lub sijhawm tsim cov txheej txheem thiab txuas ntxiv nrog kev tsim khoom thiab txheej txheem tsim khoom.

Qhov tsis muaj qhov chaw nyab xeeb tuaj yeem ua rau cov yeeb yaj kiab ntau dhau thaum lub sijhawm ua cov txheej txheem zaj duab xis qhuav, uas tuaj yeem ua rau luv luv Circuit Court. Hauv qab qhov tsawg kawg kab dav dav kuj tseem tuaj yeem ua teeb meem thaum txheej txheej txheej vim tsis muaj zog nqus thiab qhib Circuit. Pab pawg tsim qauv thiab cov tsim khoom lag luam yuav tsum txiav txim siab saib xyuas kev sib koom ua ke raws li kev tswj hwm cov teeb liab kab impedance.

Tsim thiab siv cov cai tsim tshwj xeeb

High-density layouts yuav tsum tau me me sab nraud ntev, finer thaiv thiab tighter tivthaiv yov, thiab yog li ntawd yuav tsum tau ib tug txawv tsim cov txheej txheem. HDI PCB kev tsim txheej txheem tso siab rau kev siv tshuab laser, CAD thiab CAM software, txheej txheem laser ncaj qha, cov cuab yeej tsim khoom tshwj xeeb, thiab cov kws tshaj lij kev paub. Kev ua tiav ntawm tag nrho cov txheej txheem nyob ntawm ib feem ntawm cov cai tsim uas txheeb xyuas qhov tsis xav tau, tus neeg xyuas pib dav, qhov loj me, thiab lwm yam uas cuam tshuam rau kev teeb tsa. Developing detailed design rules helps select the right manufacturer or manufacturer for your board and lays the foundation for communication between teams.