1.high-density interconnect (hdi) luam ntawv Circuit Court boards (pcbs) sawv cev rau kev nce qib tseem ceeb hauv kev ntim khoom siv hluav taws xob, ua kom muaj cov khoom siv ntau dua thiab txhim kho hluav taws xob zoo dua piv rau cov khoom siv pcbs. hdi thev naus laus zis siv microvias, dig muag vias, thiab faus vias nrog txoj kab uas hla feem ntau qis dua 150 microns, tso cai rau ntau txheej txheej thiab txo cov txheej txheem. cov qauv no txo ​​cov teeb liab txoj kev ntev, txhim kho cov teeb liab kev ncaj ncees los ntawm kev tswj cov impedance routing, thiab txhawb nqa cov ntawv thov siab txog li millimeter-yoj ntau tshaj 100 ghz. qhov txo qis ntawm qhov ntev ntawm qhov ntev hauv hdi tsim ntxiv txo cov teeb liab kev xav, tseem ceeb rau kev kub ceev digital interfaces xws li pcie 5.0 thiab ddr5.

2.Cov txheej txheem tsim khoom tseem ceeb suav nrog laser drilling nrog uv lossis co2 lasers rau microvia tsim, ua tiav qhov sib piv mus txog 1: 1, thiab cov txheej txheem lamination ua ntu zus nrog cov xovxwm qis los tiv thaiv cov resin tshaib plab. Cov txheej txheem plating siab heev xws li sau los ntawm tooj liab electroplating kom tsis muaj dab tsi los ntawm kev sau, thaum cov txheej txheem ib nrab ntxiv (sap) pab kom kab dav dav li nqaim li 25 microns. Cov ntaub ntawv uas feem ntau ua haujlwm suav nrog cov tsis tshua muaj hluav taws xob zoo li hloov kho epoxy, polyphenylene ether (ppe), lossis kua siv lead ua polymer (lcp), nrog cov dielectric tsis tu ncua (dk) qis dua 3.5 ntawm 10 ghz thiab dissipation yam (df) hauv qab 0.005. Thermal tswj yog hais los ntawm tooj liab-filled vias nrog thermal conductivity mus txog 400 w / mk, thiab thermally conductive substrates incorporating aluminium nitride los yog boron nitride fillers, kom ntseeg tau tias qhov kub thiab txias nyob rau hauv 125 ° C nyob rau hauv automotive daim ntaub ntawv.

3.hdi pcbs qhia tau hais tias superior electromagnetic compatibility (emc) yam ntxwv vim optimized grounding schemes, xws li ntawm-hauv-pad configurations thiab embedded capacitance txheej, txo electromagnetic cuam tshuam (emi) hluav taws xob los ntawm 15-20 db piv rau fr4-raws li designs. Kev txiav txim siab tsim kev tswj hwm nruj impedance, feem ntau 50 ohms ± 5% rau cov khub sib txawv hauv 25-56 gbps interfaces, thiab cov kab dav dav / qhov sib txawv hauv qab 50/50 microns rau rf circuits. Kev sib tham ntawm kev sib tham yog ua tiav los ntawm cov av coplanar waveguides thiab staggered ntawm kev npaj, txo qis kev sib txuas kom tsawg dua -40 db.

4.automated optical soj ntsuam (aoi) nrog 5-micron daws teeb meem, x-ray tomography rau 3d void tsom xam, thiab lub sij hawm-domain reflectometry (tdr) nrog 10-ps nce lub sij hawm yog ib qho tseem ceeb kev ntsuas kev ruaj ntseg zoo. Cov txheej txheem no kuaj xyuas microvia qhov tsis xws luag xws li plating tsis tiav lossis kev sau npe tsis raug qis dua 20 microns. daim ntawv thov ncua 5g loj mimo kav hlau txais xov arrays xav tau 20-txheej hdi stacks, implantable kho mob cov cuab yeej nrog biocompatible soldermask, automotive lidar modules nrog 0.2-mm suab bgas, thiab satellite payloads ntsib mil-prf-31032 chav kawm 3 kev ntseeg tau.

5.Cov kev txhim kho yav tom ntej tsom mus rau cov khoom zoo tshaj plaws hauv qab 0.3 hli, yuav tsum muaj kev ncaj qha laser structuring (dls) rau 15-micron kab txhais, thiab ntxiv kev tsim kev koom ua ke rau heterogeneous embedding ntawm si photonics los yog gan tuag. Kev ua raws li ib puag ncig tsav kev tshawb fawb rau hauv cov ntaub ntawv tsis muaj halogen nrog cov iav hloov pauv kub (tg) siab tshaj 180 ° c, thiab tsis muaj cov hlau lead-dawb nto tiav zoo li electroless nickel electroless palladium immersion kub (enpig), ua raws li rohs 3 cov lus qhia. Kev lag luam 4.0 kev koom ua ke ua kom muaj kev saib xyuas cov txheej txheem ntawm lub sijhawm ntawm iot-enabled plating da dej, thaum tshuab kev kawm algorithms tau kawm ntawm 10,000+ microvia dluab ua tiav 99.3% qhov tsis zoo ntawm kev twv ua ntej raug. hdi thev naus laus zis txuas ntxiv ua kom 30-50% txo qhov loj me hauv cov khoom siv hluav taws xob thaum tswj kev tsim cov khoom lag luam siab tshaj 98.5% los ntawm kev hloov kho laser zog tswj thiab nano-coated tso tawm cov yeeb yaj kiab txo qis kev xyaum smear.