Kodi mawonekedwe a bolodi la pcb wosanjikiza ndi bolodi lambiri wosanjikiza ndi momwe mungasiyanitsirekuti amvetse:

Kawiri wosanjikiza pcb bolodi

Mabungwe okhala ndi mbali ziwiri ali ndi zingwe mbali zonse ziwiri. Koma kuti mugwiritse ntchito mbali zonse ziwiri za waya, payenera kukhala kulumikizana kwamagetsi koyenera pakati pa mbali ziwirizi. "Bridge" iyi pakati pama circuits imatchedwa dzenje lotsogolera (VIA). bowo laling'ono mu PCB, lodzazidwa kapena lokutidwa ndi chitsulo, lomwe limatha kulumikizidwa ndi waya mbali zonse ziwiri. Chifukwa mapanelo awili amakhala ndi gawo limodzi, komanso chifukwa cholumikizira zimatha kulumikizana (zomwe zimatha kumenyedwa mozungulira mbali ina), ndibwino pama circuits ovuta kuposa gulu limodzi.

Mwaukadaulo kawiri gulu ndi mtundu wa bolodi la dera la PCB ndikofunikira kwambiri, ndiye cholinga cha wamkulu, kuti awone ngati bolodi ya PCB board iwiri ili yosavuta, kumvetsetsa gulu limodzi ndikukhulupirira kuti anzanu amatha kumvetsetsa, ndizowonjezera ya gulu limodzi, magawo awiri amatanthauza mzere umodzi wamtundu wokwanira kupita mbali ina, mbali ziwiri, ndipo panali chinthu chofunikira ndi dzenje lotsogolera. Mfundo yosavuta ndiyakuti mzere wokhala ndi mbali ziwiri, mbali zonse za mzerewo! Mabakiteriya ndi awa: mbali ziwiri zama bolodi azigawo ziwiri! Anzanu ena amafunsa ngati bolodi lamitundu iwiri, koma mbali imodzi yokha ili ndi zida zamagetsi, bolodi lotere pambuyo pake ndi gulu lapawiri kapena gulu limodzi? , bolodi lotere ndi gulu lowirikiza, kungokhala pagulu loyikapo mbali ziwiri.

Mabwalo azungulira a Multilayer ndiosavuta kusiyanitsa

Dera la bolodi molingana ndi kuchuluka kwa njira yolumikizira zingwe ndi mitengo yamagetsi, bolodi wamba wamba wokhala ndi mzere umodzi ndi mzere wapawiri, womwe umadziwika kuti gulu limodzi ndi gulu lapawiri, zamagetsi zamagetsi apamwamba, komabe, chifukwa chakapangidwe kazipangidwe kazinthu , Kuphatikiza pa kulumikizana kwapamwamba, mkati mwa ma multilayer dera ambiri, njira yopangira, idapanga mzere uliwonse pambuyo pa mzere, kachiwiri kudzera pakapangidwe kazida zamagetsi, kukanikiza, lolani kuyimitsidwa kwamayendedwe osanjikiza angapo mu bolodi la dera. bolodi loyenda mosiyanasiyana. bolodi lililonse lalikulu kuposa kapena lofanana ndi zigawo ziwiri lingatchulidwe kuti bolodi lapaulendo angapo.Multi-wosanjikiza bolodi limatha kugawidwa m'magulu angapo oyenda olimba, bolodi losanjikiza komanso lolimba, -layer bolodi lofewa komanso lolimba kuphatikiza.

Kubadwa kwa bolodi yama multilayer

Kuwonjezeka kwa kuchuluka kwa mapaketi a IC kumabweretsa kulumikizana kwakukulu, komwe kumafunikira kugwiritsa ntchito magawo angapo.Mavuto osayembekezereka monga phokoso, kusokera kogwirira ntchito, crosstalk imawonekera pakapangidwe ka maseketi osindikizidwa; Chifukwa chake, kapangidwe ka PCB kuyenera kukhazikitsidwa pochepetsa Kutalika kwa mzere wazizindikiro ndikupewa njira zofananira.Zachidziwikire, pagulu limodzi, kapenanso pagulu lawiri, zofunikirazi sizingayankhidwe mokhutiritsa chifukwa cha kuwoloka kocheperako komwe kungachitike. ndi zofunikira pamtanda, bolodi liyenera kukulitsidwa mpaka magawo opitilira awiri kuti likwaniritse magwiridwe antchito.Choncho, cholinga choyambirira cha mabwalo azoyang'anira angapo ndikupereka ufulu wochulukirapo wamagetsi ovuta komanso / kapena omvera phokoso kuti asankhe zoyenera Bokosi lamayendedwe amitundu ingapo limakhala ndi magawo atatu osunthira, awiri mwa iwo ali ndi mawonekedwe akunja, ndipo gawo lotsala ndilo Kulumikizana kwamagetsi pakati pawo nthawi zambiri kumapangidwa ndikuboola kudzera m'mabowo apakati pa bolodi. Makina oyenda mosiyanasiyana a multilayer, ngati mapanelo awiri, nthawi zambiri amakhala okutidwa - mbale zazitsulo pokhapokha atanenedwa kwina.

Ma multilaminates amapangidwa ndi kupakira ma circuits awiri kapena kupitilira wina ndi mnzake, ndi kulumikizana kokhazikika pakati pawo. Popeza kuboola ndi electroplating kumachitika magawo onse asanakulungidwe palimodzi, njirayi imaphwanya njira zachikhalidwe kuyambira pachiyambi Magawo awiri amkati amapangidwa ndi mapanelo achikhalidwe awiri, pomwe akunja amapangidwa ndi mapanelo amodzi. Asanakulungidwe, mbale zamkati zimabooleredwa, kusungunuka ndi mabowo, kusunthidwa mozungulira, kukulitsidwa ndi kukhazikika. Dzenje loloyera ndilo gawo lazizindikiro, lomwe limakulungidwa m'njira yoti apange mphete yamkuwa yoyenerera mkati mwa dzenje. Kenako amakulunga pamodzi kuti apange magawo ambiri, omwe amatha kulumikizidwa ndi mawonekedwe a wave.

Kuphatikizika kumatha kuchitika pamakina osindikizira kapena m'chipinda chopanikizika kwambiri (autoclave) .Mu makina osindikizira, zinthu zomwe zimakonzedwa (zamagetsi) zimayikidwa kuzizira kapena kutentha kwazomwe zimapangidwira (zomwe zimapangitsa kuti magalasi amasinthidwe kwambiri amaikidwa Kutentha kwa magalasi kutentha ndikutentha komwe dera la amorphous la polima (utomoni) kapena gawo la polima wamakristal limasintha kuchoka pakhalidwe lolimba, lopepuka kukhala lolimba, lopanda mphira.

Ma multilaminates amagwiritsidwa ntchito pazida zamagetsi zamagetsi (makompyuta, zida zankhondo), makamaka pakakhala kulemera ndi kuchuluka kwambiri. Komabe, izi zitha kuchitika pokhapokha pakuwonjezera mtengo wama laminates posinthana ndi malo ambiri komanso kuchepa thupi. ma circuits othamanga, ma laminates amathandizanso kwambiri chifukwa amapatsa opanga ma board osindikizidwa okhala ndi magawo opitilira awiri a matabwa opangira zingwe ndipo amapereka malo akulu okhazikika ndi mphamvu.

Zomwe zili pamwambazi ndi momwe mungasiyanitsire bolodi lazigawo ziwiri ndi bolodi lazambiri, ndikhulupilira kuti mungakonde; Ndife opanga ma board , olandiridwa kuti mufunse za ~