Noma iyiphi I-Layer High Density Interconnected PCB
UMQONDO OYISISEKO WE-HDI
I-HDI imele i-High Density Interconnector, okuwuhlobo lokukhiqiza lwe-PCB (ubuchwepheshe), kusetshenziswa ukungaboni kahle/okungcwatshwa ngobuchwepheshe ukuze kutholakale ukuminyana komugqa ophezulu wokusabalalisa. Ingakwazi ukufeza ubukhulu obuncane, ukusebenza okuphezulu kanye nezindleko eziphansi. I-HDI PCB iwukuphishekela abaklami, abahlale bethuthukisa ukuminyana okuphezulu nokunemba. Okubizwa ngokuthi "phezulu" akugcini nje ukuthuthukisa ukusebenza komshini, kodwa futhi kunciphisa usayizi womshini. Ubuchwepheshe be-High Density Integration (HDI) bungenza idizayini yomkhiqizo wokugcina ibe mincane kakhulu, kuyilapho ihlangabezana namazinga aphezulu okusebenza kwe-elekthronikhi nokusebenza kahle.
I-HDI PCB ngokuvamile ihlanganisa i-laser drilling blind nge-mechanical drilling blind nge. Ubuchwepheshe bokuqhuba phakathi kwezingqimba zangaphakathi nezingaphandle ngokuvamile bufinyelelwa ngezinqubo ezinjengokungcwatshwa, ukungaboni, imigodi enqwabelene, imigodi emile, ukuwela ubumpumputhe/ukungcwatshwa, ngokusebenzisa imigodi, ukungaboni ngokugcwalisa i-electroplating, ucingo olucolekileyo isikhala esincane kanye nezimbobo ezincane. kudiski, njll.
Kunezinhlobo ezimbalwa ze-HDI PCB : ungqimba olu-1, ungqimba olu-2, ungqimba olu-3, ungqimba olu-4 nanoma yikuphi ukuxhuma kwesendlalelo.
● Isakhiwo se-HDI yesendlalelo esingu-1 : 1+N+1 (ukucindezela kabili, ukubhola nge-laser kanye).
● Isakhiwo se-HDI yesendlalelo esi-2 : 2+N+2 (ucindezela izikhathi ezi-3, ukubhola nge-laser kabili).
● Isakhiwo se-HDI yesendlalelo esingu-3 : 3+N+3 (ucindezela izikhathi ezingu-4, i-laser drilling izikhathi ezingu-3).
● Isakhiwo se-4 layer HDI : 4+N+4 (ucindezela izikhathi ezi-5, i-laser drilling izikhathi ezingu-4).
Kusukela kulezi zakhiwo ezingenhla, kungaphethwa ngokuthi ukubhola kwe-laser kanye kuyi-HDI engu-1, kabili i-HDI engu-2, njalonjalo. Noma iyiphi i-Interconnection yesendlalelo ingaqala ukubhola nge-laser kusuka ebhodini eliwumgogodla. Ngamanye amazwi, okudinga ukubhola i-laser ngaphambi kokucindezela noma iyiphi i-HDI yongqimba.
Umqondo Womklamo we-HDI
1.Uma sihlangabezana nomklamo onezimbobo endaweni ye-BGA ye-PCB enezingqimba eziningi, kodwa ngenxa yemikhawulo yendawo, kufanele sisebenzise ama-ultra amancane ama-BGA pads kanye nezimbobo ezincane ukuze sifinyelele ukungena okugcwele kwebhodi, kufanele sikwenze kanjani? Manje singathanda ukwethula i-HDI enembayo ephezulu ye-PCB eshiwo njalo kuma-PCB njengokulandelayo.
Ukubhola okuvamile kwe-PCB kuthintwa ithuluzi lokubhoboza. Lapho usayizi womgodi wokubhoboza ufinyelela ku-0.15mm, izindleko sezivele ziphezulu kakhulu futhi kunzima ukuthuthukisa ngaphezulu. Kodwa-ke, ngenxa yesikhala esilinganiselwe, lapho kuphela usayizi womgodi ongu-0.1mm ongamukelwa, umqondo wokuklama we-HDI uyadingeka.
2. Ukubhola kwe-HDI PCB akusancikile ekubholani ngendlela evamile, kodwa kusetshenziswa ubuchwepheshe bokubhola nge-laser (ngezinye izikhathi obaziwa nangokuthi ibhodi le-laser). Ubukhulu bembobo yokumba ye-HDI ngokuvamile bungu-3-5mil (0.076-0.127mm), ububanzi bomugqa buyi-3-4mil (0.076-0.10mm), ubukhulu bamaphedi e-solder bungancishiswa kakhulu, ngakho-ke kungatholakala ukwabiwa kwemigqa eyengeziwe indawo yeyunithi, okuholela ekuxhumekeni kokuminyana okuphezulu.
Ukuvela kobuchwepheshe be-HDI kujwayelane futhi kwakhuthaza ukuthuthukiswa kwemboni ye-PCB, okwenza i-BGA eminyene kakhulu, i-QFP, njll. ihlelwe ku-HDI PCB. Njengamanje, ubuchwepheshe be-HDI busetshenziswe kabanzi, phakathi kwayo ungqimba olu-1 lwe-HDI lusetshenziswe kabanzi ekukhiqizeni kwe-PCB nge-0.5pitch BGA. Ukuthuthukiswa kobuchwepheshe be-HDI kuqhuba ukuthuthukiswa kobuchwepheshe be-chip, obubuye buqhubekisele phambili intuthuko nenqubekelaphambili yobuchwepheshe be-HDI.
Namuhla ama-chips e-0.5pitch BGA kancane kancane asemukelwe kabanzi onjiniyela bokuklama, futhi amalunga e-solder e-BGA ashintshile kancane kancane esuka esikhungweni esinezigodi noma efomini elisekelwe phansi ukuze abe ifomu elinokufakwa kwesignali kanye nokuphumayo esikhungweni esidinga izintambo.
3. I-HDI PCB ivamise ukukhiqizwa kusetshenziswa indlela yokunqwabelanisa. Lapho kwenziwa ukunqwabelanisa izikhathi eziningi, izinga lobuchwepheshe lebhodi liyaphakama. I-HDI PCB evamile inqwabelene ngokuyisisekelo kanye, kuyilapho i-HDI esezingeni eliphezulu isebenzisa ubuchwepheshe bokunqwabelanisa izikhathi ezimbili noma ngaphezulu, kanye nobuchwepheshe obuthuthukisiwe be-PCB obufana nokupakishwa kwezimbobo, ukugcwaliswa kwemigodi nge-electroplating kanye nokubhoboza nge-laser okuqondile, njll.
I-HDI PCB ihambisana nokusetshenziswa kobuchwepheshe bokuhlanganisa obusezingeni eliphezulu, futhi ukusebenza kukagesi nokunemba kwesignali kuphakeme kune-PCB evamile. Ngaphezu kwalokho. I-HDI inokuthuthukiswa okungcono ekuphazamisekeni kwefrikhwensi yomsakazo, ukuphazamiseka kwamagagasi kagesi, ukukhishwa kwe-electrostatic kanye nokuqhutshwa kwe-thermal, njll.
Isicelo
I-HDI PCB inohlu olubanzi lwezimo zohlelo lokusebenza emkhakheni we-elekthronikhi, njenge:
-Idatha Enkulu ne-AI : I-HDI PCB ingathuthukisa ikhwalithi yesiginali, impilo yebhethri nokuhlanganiswa okusebenzayo o amafoni omakhalekhukhwini, kuyilapho yehlisa isisindo nokujiya kwawo. I-HDI PCB ingaphinde isekele ukuthuthukiswa kobuchwepheshe obusha njengokuxhumana kwe-5G, i-AI ne-IoT, njll.
-Automobile : I-HDI PCB ingahlangabezana nezidingo eziyinkimbinkimbi nokuthembeka kwezinhlelo ze-elekthronikhi zezimoto, kuyilapho ithuthukisa ukuphepha, ukunethezeka kanye nobuhlakani bezimoto. Ingasetshenziswa futhi emisebenzini efana ne-radar yezimoto, ukuzulazula, ukuzijabulisa kanye nosizo lokushayela.
-Medical : I-HDI PCB ingathuthukisa ukunemba, ukuzwela nokuzinza kwemishini yezokwelapha, kuyilapho inciphisa ubukhulu bayo kanye nokusetshenziswa kwamandla. Ingasetshenziswa futhi emikhakheni efana nezithombe zezokwelapha, ukuqapha, ukuxilongwa kanye nokwelashwa.
Izinhlelo zokusebenza ezijwayelekile ze-HDI PCB zikumakhalekhukhwini, amakhamera edijithali, i-AI, abathwali be-IC, amakhompyutha aphathekayo, ugesi wezimoto, amarobhothi, ama-drones, njll., asetshenziswa kabanzi emikhakheni eminingi.
