Ukunemba okuphezulu kwebhodi lesifunda kubhekisela ekusetshenzisweni kobubanzi/isikhala somugqa ocolekile, izimbobo ezincane, ububanzi bendandatho encane (noma ukungabi nobubanzi bendandatho), kanye nezimbobo ezigqitshiwe nezingaboni ukuze kuzuzwe ukuminyana okuphezulu.
Ukunemba okuphezulu kubhekisela kumphumela "womncane, omncane, omncane, omncane," nakanjani uzoletha izidingo zokunemba okuphezulu, uthatha ububanzi bomugqa njengesibonelo: ububanzi bomugqa ongu-0.20mm, ngokusho kwemithethonqubo yokukhiqiza u-0.16 ~ 0.24mm njengokufanelekile, iphutha lithi (0.20±0.04) mm; kanye nobubanzi bomugqa obungu-0.10 mm, iphutha lithi (0.1±0.02) mm ngendlela efanayo. Ngokusobala ukunemba kwalokhu kwakamuva kuphindwe kabili, nokunye akunzima ukukuqonda, ngakho-ke ukunemba okuphezulu kuyadingeka Akusaxoxwa ngokwehlukana, kodwa kuyinkinga evelele kubuchwepheshe bokukhiqiza.
1.Fine wire technology
Ngokuzayo, ububanzi/isikhala somugqa osondelene kakhulu sizosuka ku-0.20mm siye ku-0.13mm siye ku-0.08mm siye ku-0.005mm ukuze sihlangabezane nezimfuneko ze-SMT kanye nephakheji yama-chip amaningi (Mulitichip Package, MCP). Ngakho-ke, ubuchwepheshe obulandelayo buyadingeka:
①Usebenzisa i-foil yethusi ezacile noma ezacile kakhulu (<18um) i-substrate kanye nobuchwepheshe bokwelapha obuphezulu.
②Usebenzisa ifilimu elomile elincanyana kanye nenqubo yokuthambisa emanzi, ifilimu eyomile enekhwalithi encane nenhle inganciphisa ukuhlanekezela kobubanzi bomugqa kanye namaphutha. Ifilimu emanzi ingavala isikhala esincane somoya, ikhulise ukunamathela kwesixhumi esibonakalayo, futhi ithuthukise ubuqotho bezintambo nokunemba.
③I-Electrodeposited photoresist (ED) isetshenzisiwe. Ubukhulu bayo bungalawuleka kububanzi obungu-5 ~ 30/um, obungakhiqiza izintambo ezinhle kakhulu. Ifaneleka ngokukhethekile ububanzi bendandatho ewumngcingo, abukho ububanzi bendandatho kanye nocwecwe olugcwele. Njengamanje, kunemigqa yokukhiqiza ye-ED engaphezu kweshumi emhlabeni.
④Yamukela ubuchwepheshe bokudalulwa kokukhanya okuhambisanayo. Njengoba ukuchayeka kokukhanya okuhambisanayo kunganqoba ithonya lokuhlukahluka kobubanzi bomugqa okubangelwa ukukhanya kwe-oblique yomthombo wokukhanya "wephuzu", ucingo oluhle olunobubanzi obunembile bomugqa kanye nemiphetho ebushelelezi ingatholakala. Kodwa-ke, imishini yokuchayeka ehambisanayo iyabiza, idinga ukutshalwa kwezimali okuphezulu, futhi idinga ukusebenza endaweni ehlanzeke kakhulu.
⑤Vumela ubuchwepheshe bokubona okuzenzakalelayo. Lobu buchwepheshe sebuphenduke indlela ebaluleke kakhulu yokuthola lapho kukhiqizwa izintambo ezicolekile futhi buthuthukiswa ngokushesha, busetshenziswa futhi buthuthukiswe.
2.Ubuchwepheshe be-Micropore
Izimbobo ezisebenzayo zamabhodi aphrintiwe afakwe phezulu zisetshenziselwa ikakhulukazi ukuxhumana kukagesi, okwenza ukusetshenziswa kobuchwepheshe be-micro-hole kubaluleke kakhulu. Ukusetshenziswa kwezinto ezijwayelekile zokubhoboza kanye nemishini yokumba ye-CNC ukukhiqiza izimbobo ezincane kunokwehluleka okuningi kanye nezindleko eziphezulu.
Ngakho-ke, amabhodi wesekethe aphrintiwe aphezulu kakhulu enziwa izintambo ezicolekile namapads. Nakuba imiphumela emihle isizuziwe, amandla abo anomkhawulo. Ukuze uqhubeke uthuthukise ukuminyana (njengezintambo ezingaphansi kuka-0.08 mm), izindleko zikhuphuke kakhulu Ngakho-ke, ama-micro-pores asetshenziselwa ukuthuthukisa ukuminyana.
Eminyakeni yamuva, ukuphumelela kuye kwenziwa kubuchwepheshe bemishini yokumba ye-CNC kanye nama-micro-bits, ngakho-ke ubuchwepheshe be-micro-hole buthuthuke ngokushesha. Lesi isici esivelele esivelele ekukhiqizeni kwamanje kwe-PCB.
Esikhathini esizayo, ubuchwepheshe bokwenza ama-micro-holes buzothembela kakhulu emishinini yokumba ye-CNC ethuthukisiwe kanye namakhanda amancane amancane. Izimbobo ezincane ezakhiwe ubuchwepheshe be-laser zisengaphansi kwezimbobo ezincane ezakhiwe imishini yokumba ye-CNC ngokombono wezindleko kanye nekhwalithi yembobo.
①CNC umshini wokumba
Njengamanje, ubuchwepheshe bomshini wokumba we-CNC buye benza impumelelo nenqubekelaphambili entsha. Futhi kwakha isizukulwane esisha somshini wokumba we-CNC obonakala ngokumba izimbobo ezincane.
Ukusebenza kahle kokubhoboza izimbobo ezincane (ngaphansi kuka-0.50mm) emishinini yokubhoboza i-micro-hole ephakeme izikhathi ezingu-1 kunemishini evamile yokumba ye-CNC, enokwehluleka okumbalwa, futhi ijubane liyi-11-15r/min; 0.1-0.2mm izimbobo ezincane zingabhora. I-drill bit encane yekhwalithi ephezulu ingabhora ngokupakisha amapuleti amathathu (1.6mm/ucezu).
Lapho i-drill bit iphuka, ingama futhi ibike indawo ngokuzenzakalelayo, ibuyisele ngokuzenzakalelayo i-drill bit bese ihlola ububanzi (umtapo wezincwadi wamathuluzi ungamukela amakhulu ezicucu), futhi ukwazi ukulawula ngokuzenzakalelayo ibanga eliqhubekayo nokujula kokubhoboza kwethiphu yokubhoboza futhi ipuleti lekhava, ukuze kubhojwe izimbobo eziyizimpumputhe , Ngeke ibhoboze itafula.
Ithebula lomshini wokumba we-CNC lamukela umcamelo womoya kanye nohlobo lwe-levitation kazibuthe, oluhamba ngokushesha, olulula futhi olunembe kakhudlwana ngaphandle kokuklwebha itafula. Imishini enjalo yokumba idume kakhulu njengamanje, njengeMega 4600 yasePrurite e-Italy, uchungechunge lwe-Excellon 2000 e-United States, kanye nemikhiqizo yesizukulwane esisha njengeSwitzerland neJalimane.
②Kunezinkinga eziningi ngempela ngokumba ngelaser imishini yokumba ye-CNC evamile kanye nezingcezu zokubhoboza izimbobo ezincane. Kuvimbe inqubekelaphambili yobuchwepheshe bemigodi emincane, ngakho ukuguguleka kwe-laser kuthole ukunakwa, ucwaningo kanye nokusetshenziswa.
Kodwa kukhona iphutha elibulalayo, okungukuthi, ukwakheka kwezimbobo zezimpondo, okuba nzima kakhulu njengoba ubukhulu bebhodi bukhula. Kuhambisana nokungcoliswa kokukhishwa kwezinga lokushisa eliphezulu (ikakhulukazi amabhodi anezendlalelo eziningi), ukuphila nokugcinwa kwemithombo yokukhanya, ukunemba okuphindayo kwezimbobo eziqoshiwe, nezindleko, ukuphromothwa kanye nokusetshenziswa kwezimbobo ezincane kumabhodi aphrintiwe kunqunyelwe.
Kodwa-ke, izimbobo ezifakwe nge-laser zisasetshenziswa kuma-microplates amancane anobukhulu obukhulu, ikakhulukazi kubuchwepheshe be-MCM-L high-density interconnect (HDI), njengemigodi eqoshiwe yefilimu ye-polyester kanye nokufakwa kwensimbi ku-MCMS (ubuchwepheshe be-Sputtering) busetshenziswa ngokuhambisana nokuphakama okuphezulu. - density interconnects.
Ukwakhiwa kwezimbobo ezingcwatshwe emabhodini amaningi axhumene kakhulu anezimbobo ezigqitshiwe neziyizimpumputhe nakho kungasetshenziswa. Kodwa-ke, ngenxa yokuthuthukiswa kanye nempumelelo yezobuchwepheshe yemishini yokumba ye-CNC kanye nokubhoboza okuncane, kwakhuthazwa futhi kwasetshenziswa ngokushesha.
Ngakho-ke, ukusetshenziswa kwe-laser drilling kumabhodi wesifunda se-surface mount akukwazi ukwakha isikhundla esivelele. Kodwa isekhona indawo endaweni ethile.
③ wangcwatshwa, oyimpumputhe, ngokusebenzisa-imbobo ubuchwepheshe wangcwatshwa, izimpumputhe, ngokusebenzisa-imbobo inhlanganisela ubuchwepheshe futhi kuyindlela ebalulekile yokwandisa ukuminyana isekethe ephrintiwe.
Ngokuvamile, izimbobo ezigqitshiwe nezingaboni ziyizimbobo ezincane. Ngaphezu kokwandisa inani lezintambo ebhodini, izimbobo ezingcwatshiwe neziyimpumputhe zisebenzisa "i-inter-layer interconnection" eseduze kakhulu, okunciphisa kakhulu inani lemigodi eyakhiwe kanye nokumiswa kwepuleti lokuhlukaniswa nakho kuzoncishiswa kakhulu, ngaleyo ndlela andise inani lezintambo ezisebenzayo kanye nokuxhunywa kwezingqimba ebhodini, nokwandisa ukuminyana kokuxhuma.
Ngakho-ke, ibhodi elinezingqimba eziningi elihlanganiswe nezimbobo ezingcwatshiwe, eziyizimpumputhe, nezidlulayo linemibhobho yokuxhumana okungenani izikhathi ezi-3 ngaphezu kwaleyo yesakhiwo sebhodi esigcwele imbobo egcwele ngobukhulu obufanayo kanye nenani lezingqimba. Uma kugqitshwe, kungaboni, futhi Ubukhulu bebhodi eliphrintiwe elihlanganiswe nezimbobo zizoncishiswa kakhulu noma inani lezendlalelo lizoncishiswa kakhulu.
Ngakho-ke, emabhodini aphrintiwe afakwe phezulu aphakeme kakhulu, ubuchwepheshe bemigodi engcwatshwe futhi eyimpumputhe buyasetshenziswa kakhulu, hhayi kuphela kumabhodi aphrintiwe abekwe phezulu kumakhompiyutha amakhulu kanye nemishini yokuxhumana, kodwa nasezinhlelweni zomphakathi nezimboni. Ibuye isetshenziswe kabanzi ensimini, ngisho nakwamanye amabhodi amancane, njenge-PCMCIA ehlukahlukene, amakhadi we-Smard, IC namanye amabhodi amancane anezingqimba eziyisithupha.
Amabhodi wesifunda aphrintiwe anezakhiwo zembobo egqitshiwe futhi eyimpumputhe ngokuvamile agcwaliswa ngendlela yokukhiqiza "i-sub-board", okusho ukuthi ingaqedwa ngemva kwamapuleti amaningi okucindezela, ukubhoboza, ukumboza imbobo, njll., ngakho ukubeka okunembile kubaluleke kakhulu.