Sezvinongoita zvitoro zvemahara zvinoda kubata uye kuratidza zvipikiri uye screws emarudzi akasiyana-siyana, metric, zvinhu, kureba, upamhi uye pitch, nezvimwewo, PCB dhizaini inodawo kubata zvinhu zvekugadzira zvakaita semaburi, kunyanya mudhizaini-yakakwirira. Madhizaini echinyakare ePCB anogona kungoshandisa maburi mashoma akasiyana, asi madhizaini emazuva ano epamusoro-density interconnect (HDI) anoda mhando dzakasiyana uye saizi yemaburi ekupfuura. Gomba rega rega rekupfuura rinoda kutariswa kuti rishandiswe nemazvo, kuve nechokwadi chepamusoro pekuita kwebhodhi uye kukanganisa-isina manufacturability. Ichi chinyorwa chichatsanangura kudiwa kwekutonga yakakwira-density kuburikidza-maburi muPCB dhizaini uye maitiro ekuita izvi.

Zvinhu zvinotyaira yakakwira-density PCB dhizaini 

Sezvo kudiwa kwemidziyo midiki yemagetsi kuri kuramba kuchikura, mabhodhi edunhu akadhindwa anosimbisa midziyo iyi anofanira kuderera kuti akwane mazviri. Panguva imwecheteyo, kuti isangane nezvinodiwa zvekuvandudza mashandiro, zvigadzirwa zvemagetsi zvinofanirwa kuwedzera mamwe madivayiri uye masekete pabhodhi. Saizi yemidziyo yePCB inogara ichidzikira, uye huwandu hwepini huri kuwedzera, saka unofanirwa kushandisa mapini madiki uye nzvimbo yepedyo yekugadzira, izvo zvinoita kuti dambudziko rinyanye kuomarara. Kune vanogadzira PCB, izvi ndizvo zvakaenzana nebhegi richiita diki uye diki, richibata zvinhu zvakawanda mariri. Nzira dzechinyakare dzekugadzira bhodhi redunhu dzinokurumidza kusvika kumiganhu yavo.

Kuti zvizadzise kudiwa kwekuwedzera mamwe maseketi kune diki bhodhi saizi, itsva PCB yekugadzira nzira yakatanga - yakakwira-density Interconnect, kana HDI. Iyo HDI dhizaini inoshandisa yakawedzera dhizaini bhodhi kugadzira matekiniki, madiki mitsara yakafara, zvitete zvinhu, uye mapofu uye akavigwa kana laser-drilled microholes. Nekuda kweaya epamusoro density maitiro, mamwe maseketi anogona kuiswa pane diki bhodhi uye anopa inoshanda yekubatanidza mhinduro kune akawanda-pini akabatanidzwa maseketi.

Pane zvimwe zvakati wandei zvakanakira kushandisa aya maburi-density makomba: 

Wiring channels:Sezvo mapofu uye maburi akavigwa uye ma microholes asingapindi mushizha, izvi zvinogadzira imwe nzira ye wiring mukugadzira. Nekuisa izvi zvakasiyana-siyana kuburikidza nemaburi, vagadziri vanogona waya waya nemazana emapini. Kana chete akajairwa kuburikidza nemaburi achishandiswa, midziyo ine mapini akawanda kazhinji inovhara ese emukati machani ewaya.

Chiratidzo chekuvimbikaZvikwangwani zvakawanda pamidziyo midiki yemagetsi zvakare zvine chaiyo chiratidzo chekuvimbika zvinodiwa, uye kuburikidza-maburi haazadzise dhizaini yakadaro. Aya maburi anogona kugadzira antennas, kuunza matambudziko eEMI, kana kukanganisa nzira yekudzoka kwechiratidzo chenetiweki yakakosha. Kushandiswa kwemaburi mapofu uye kuvigwa kana microholes kunobvisa zvinogona chiratidzo chekuvimbika matambudziko anokonzerwa nekushandiswa kuburikidza nemakomba.

Kuti tinzwisise zviri nani izvi kuburikidza nemaburi, ngatitarisei mhando dzakasiyana dzemaburi-maburi ayo anogona kushandiswa mumhando yepamusoro-density magadzirirwo uye mashandisirwo awo.

Mhando uye chimiro chepamusoro-density interconnection makomba 

Gomba repasi (pass hole) igomba pabhodhi redunhu rinobatanidza matinji maviri kana anopfuura. Kazhinji, gomba rinoendesa chiratidzo chinotakurwa nedunhu kubva kune rimwe danda rebhodhi kuenda kune rinoenderana redunhu pane imwe layer. Kuti uite masaini pakati peiyo wiring layer, maburi anoiswa simbi panguva yekugadzira. Maererano nekushandiswa kwakananga, ukuru hwegomba uye padhi zvakasiyana. Madiki kuburikidza-maburi anoshandiswa kune chiratidzo wiring, nepo makuru kuburikidza-maburi anoshandiswa kune simba uye pasi wiring, kana kubatsira kupisa kupisa kwakanyanya.

Mhando dzakasiyana dzemakomba pabhodhi redunhu

kuburikidza-buri

Iyo kuburikidza-buri ndiyo yakajairwa kuburikidza-gomba yakashandiswa pamativi maviri akadhindwa edunhu mabhodhi kubva paakatanga kuunzwa. Maburi acho anoboorwa nemuchina kuburikidza nebhodhi rese redunhu uye anoiswa electroplated. Zvisineyi, chibooreso chishoma chinogona kucherwa nechibooreso chemuchina chine zvimwe zvinogumira, zvichienderana nechikamu chechiyero chedhayamita yedhiraivha kusvika kune ukobvu hweplate. Kazhinji kutaura, aperture yeburi neburi haisi pasi pe 0.15 mm.

Blind hole:

Kufanana nemaburi-maburi, maburi anodonhedzwa nemichina, asi nematanho akawanda ekugadzira, chikamu cheplate chete chinodonhedzwa kubva pamusoro. Mabofu maburi anotarisanawo nedambudziko rekudzikamisa saizi diki; Asi zvichienderana nekuti isu tiri padivi ripi rebhodhi, tinogona waya kumusoro kana pasi pegomba remapofu.

Gomba rakavigwa:

Makomba akavigwa, semabofu, anoboorwa nemichina, asi anotanga uye anopera mukati memukati mebhodhi kwete pamusoro. Iyi kuburikidza-gomba inodawo mamwe matanho ekugadzira nekuda kwekudiwa kwekumisikidzwa muplate stack.

Micropore

Kuboora uku kunobviswa nelaser uye aperture iri pasi pe 0.15 mm muganho wemechani drill bit. Nekuda kwekuti ma microholes anongo tambanudzira maviri akatevedzana akaturikidzana ebhodhi, chikamu chechiyero chinoita kuti maburi awanikwe ekuputira madiki. Microholes inogonawo kuiswa pamusoro kana mukati mebhodhi. Iwo ma microholes anowanzo kuzadzwa uye kuputirwa, zvakavanzwa, uye nekudaro anogona kuiswa munzvimbo-yepamusoro element solder mabhora ezvikamu zvakaita sebhora grid arrays (BGA). Nekuda kwekaburi kadiki, padhi inodiwa kune microhole zvakare idiki pane yakajairika gomba, ingangoita 0.300 mm.

Maererano nezvinodiwa zvekugadzira, pamusoro pemhando dzakasiyana dzemakomba dzinogona kugadzirwa kuti dzishande pamwe chete. Semuenzaniso, micropores inogona kuiswa pamwe nemamwe ma micropores, pamwe nemakomba akavigwa. Makomba aya anogonawo kudzedzereka. Sezvambotaurwa, ma microholes anogona kuiswa mumapadhi ane pamusoro-gomo element pini. Dambudziko rekusangana kwewaya rinowedzerwazve nekusavapo kwechinyakare nzira kubva pamusoro pegomo padhi kuenda kune fan yekubuda.