Chitukuko cha bolodi losindikizidwa (PCB)

Chitukuko cha bolodi losindikizidwa (PCB)

Kuyambira kumayambiriro kwa zaka za m'ma 1900, pamene kusinthana kwa mafoni kunapangitsa kuti ma board ozungulira akhale ocheperakobolodi losindikizidwa (PCB)makampani akhala akufunafuna kachulukidwe kwambiri kuti akwaniritse zofuna zosakhutitsidwa zamagetsi ang'onoang'ono, othamanga komanso otsika mtengo.Kuchulukirachulukirako sikunathe konse, koma kwakula kwambiri.Ndi kupititsa patsogolo komanso kupititsa patsogolo ntchito zophatikizika zamagawo chaka chilichonse, makampani opanga ma semiconductor amawongolera njira yaukadaulo ya PCB, amalimbikitsa msika wa board board, ndikufulumizitsa chitukuko cha bolodi yosindikizidwa (PCB).

Popeza kuwonjezeka kwa kuphatikizika kwa dera lophatikizika kumatsogolera mwachindunji kuwonjezeka kwa madoko olowera / zotulutsa (I / O) (lamulo la Rent), phukusili likufunikanso kuwonjezera kuchuluka kwa maulumikizidwe kuti agwirizane ndi chip chatsopano.Nthawi yomweyo, kukula kwa phukusi kumayesedwa nthawi zonse kuti akhale ochepa.Kupambana kwaukadaulo wamapaketi a planar array kwapangitsa kuti zitheke kupanga ma phukusi otsogola opitilira 2000 lero, ndipo chiwerengerochi chidzafika pafupifupi 100000 pazaka zingapo pomwe makompyuta apamwamba kwambiri amasintha.IBM's Blue Gene, mwachitsanzo, imathandizira kugawa zambiri zamtundu wa DNA.

PCB iyenera kuyenderana ndi kachulukidwe ka phukusi ndikusintha ukadaulo waposachedwa kwambiri.Direct chip bonding, kapena ukadaulo wa flip chip, umangiriza tchipisi molunjika ku board board: kunyalanyaza zolongedza wamba palimodzi.Zovuta zazikulu zomwe ukadaulo wa flip chip umabweretsa kumakampani a board board adayankhidwa pagawo laling'ono ndipo amangogwiritsidwa ntchito m'mafakitale ochepa.

PCB supplier potsiriza afika malire ambiri a ntchito njira dera dera ndipo ayenera kupitiriza kusinthika, monga poyamba ankayembekezera, ndi kuchepetsa etching njira ndi kubowola makina akutsutsidwa.Makampani oyendayenda osinthasintha, omwe nthawi zambiri amanyalanyazidwa ndi kunyalanyazidwa, atsogolera njira yatsopanoyi kwa zaka zosachepera khumi.Njira zopangira ma semi-additive conductor tsopano zitha kupanga mizere yosindikizidwa yamkuwa yochepera m'lifupi mwa ImilGSfzm, ndipo kubowola laser kumatha kupanga ma microholes a 2mil (50Mm) kapena kuchepera.Theka la ziwerengerozi zitha kukwaniritsidwa mumizere yaying'ono yachitukuko, ndipo titha kuwona kuti izi zitha kugulitsidwa mwachangu kwambiri.

Zina mwa njirazi zimagwiritsidwanso ntchito m'makampani okhwima ozungulira, koma zina zimakhala zovuta kuzikwaniritsa m'mundawu chifukwa zinthu monga vacuum deposition sizimagwiritsidwa ntchito kwambiri pamakampani okhwima ozungulira.Gawo la kubowola kwa laser likuyembekezeka kuwonjezeka chifukwa ma CD ndi zamagetsi zimafuna matabwa ambiri a HDI;Makampani olimba a board board awonjezeranso kugwiritsa ntchito zokutira vacuum kuti apange makulidwe apamwamba a semi-addition conductor.

Pomaliza, amultilayer PCB boardndondomeko idzapitirira kusinthika ndipo gawo la msika la ndondomeko ya multilayer lidzawonjezeka.PCB wopanga adzaonanso epoxy polima dongosolo dera matabwa kutaya msika mokomera ma polima amene angagwiritsidwe ntchito bwino laminates.Ntchitoyi ikhoza kufulumizitsa ngati zoletsa moto zomwe zili ndi epoxy zikaletsedwa.Tikuwonanso kuti matabwa osinthika athetsa mavuto ambiri a kachulukidwe kwambiri, amatha kusinthidwa kukhala njira zotenthetsera zopanda lead za aloyi, ndipo zida zosunthika sizikhala ndi chipululu ndi zinthu zina pazachilengedwe "mndandanda wakupha".

Huihe Circuits ndi kampani yopanga ma PCB, pogwiritsa ntchito njira zowonda kuti zitsimikizire kuti kasitomala aliyense wa PCB akhoza kutumizidwa pa nthawi yake kapena pasanathe nthawi.Sankhani ife, ndipo simuyenera kudandaula za tsiku lobweretsa.