A cikin ‘yan shekarun nan, don saduwa da buƙatun miniaturization na wasu samfuran samfuran lantarki na ƙarshen zamani, haɗin guntu yana ƙaruwa da haɓaka, tazarar fil ɗin BGA yana ƙara kusantowa (ƙasa da ko daidai da 0.4pitch), Tsarin PCB yana ƙara zama ƙarami, kuma ƙimar juyawa tana girma da girma. Ana amfani da fasahar Anylayer (ba bisa ƙa’ida ba) don haɓaka ƙirar ƙira ba tare da tasirin aikin kamar mutuncin sigina ba, Wannan shine ALIVH kowane Layer IVH tsarin multilayer da aka buga allon wayoyi.
Halayen fasaha na kowane layi ta rami
Idan aka kwatanta da halayen fasahar HDI, fa’idar ALIVH shine cewa ‘yancin ƙira ya ƙaru sosai kuma ana iya buga ramuka cikin yardar kaina tsakanin yadudduka, wanda fasahar HDI ba za ta iya cimma ta ba. Gabaɗaya, masana’antun cikin gida suna samun tsari mai rikitarwa, wato, ƙimar ƙira na HDI shine kwamiti na uku na HDI. Saboda HDI baya ɗaukar hakowa na laser gaba ɗaya, kuma ramin da aka binne a cikin Layer na ciki yana ɗaukar ramukan inji, buƙatun diski rami sun fi girma fiye da ramukan laser, kuma ramukan injin sun mamaye sararin samaniyar da ke wucewa. Sabili da haka, gabaɗaya magana, idan aka kwatanta da hakowa ba bisa ƙa’ida ba na fasahar ALIVH, ramin rami na farantin murfin ciki na iya amfani da micropores 0.2mm, wanda har yanzu babban rata ne. Sabili da haka, sararin wiring na hukumar ALIVH tabbas ya fi na HDI girma. A lokaci guda, tsada da wahalar sarrafawa na ALIVH suma sun fi na tsarin HDI. Kamar yadda aka nuna a Figure 3, zane ne na ALIVH.
Ƙaddamar da ƙalubalen vias a cikin kowane Layer
Layer mai sabani ta hanyar fasaha gaba ɗaya yana karkatar da al’ada ta hanyar ƙira. Idan har yanzu kuna buƙatar saita vias a cikin yadudduka daban -daban, zai ƙara wahalar gudanarwa. Kayan aikin ƙira yana buƙatar samun ikon hakowa mai hankali, kuma ana iya haɗa shi kuma a raba shi yadda ya so.
Cadence yana ƙara hanyar maye gurbin wayoyi dangane da layin aiki zuwa hanyar wiring na gargajiya dangane da layin maye gurbin waya, kamar yadda aka nuna a cikin Hoto na 4: zaku iya duba layin da zai iya aiwatar da layin madauki a cikin sashin layin aiki, sannan danna sau biyu rami don zaɓar kowane Layer don maye gurbin waya.
Misalin ƙirar ALIVH da yin faranti:
Tsarin ELIC mai hawa 10
Dandalin OMAP4
An binne juriya, ƙarfin binnewa da abubuwan da aka saka
Ana buƙatar babban haɗe-haɗe da ƙaramin kayan aikin hannu don saurin isa ga Intanet da cibiyoyin sadarwar jama’a. A halin yanzu dogaro da fasahar 4-n-4 HDI. Koyaya, don cimma ƙimar haɗin kai mafi girma ga ƙarni na gaba na sabuwar fasaha, a cikin wannan filin, saka abubuwa masu wucewa ko ma aiki cikin PCB da substrate na iya biyan buƙatun da ke sama. Lokacin da kuka ƙera wayoyin hannu, kyamarorin dijital da sauran samfuran lantarki na mabukaci, shine zaɓin ƙirar yanzu don la’akari da yadda ake saka abubuwa masu wucewa da aiki cikin PCB da substrate. Wannan hanyar na iya zama ɗan bambanci saboda kuna amfani da masu siyarwa daban -daban. Wani fa’idar sassan da aka saka shi ne cewa fasahar tana ba da kariya ta kadara ta abin da ake kira ƙirar baya. Editan PCB na Allegro na iya ba da mafita na masana’antu. Editan PCB na Allegro kuma yana iya yin aiki sosai tare da hukumar HDI, jirgi mai sassauƙa da sassan da aka saka. Kuna iya samun madaidaitan sigogi da ƙuntatawa don kammala ƙirar sassan da aka saka. Tsarin ƙirar na’urorin da aka saka ba zai iya sauƙaƙe aiwatar da SMT kawai ba, har ma yana haɓaka tsabtace samfura sosai.
An binne juriya da ƙirar iya aiki
Juriya da aka binne, wanda kuma aka sani da juriya da aka binne ko juriya na fim, shine danna kayan juriya na musamman akan substrate insulating, sannan sami ƙimar juriya da ake buƙata ta bugu, etching da sauran matakai, sannan danna shi tare da sauran yadudduka na PCB don ƙirƙirar Layer juriya jirgin sama. Fasahar kere -kere na gama -gari na PTFE binne juriya multilayer buga jirgi na iya cimma juriya da ake buƙata.
Ƙarfin da aka binne yana amfani da kayan tare da ƙima mai ƙarfi kuma yana rage tazara tsakanin yadudduka don samar da isasshen ƙarfin farantin faranti don taka rawa na lalata da tace tsarin samar da wutar lantarki, ta yadda za a rage madaidaicin ƙarfin da ake buƙata akan jirgin da cimma ingantattun halayen tacewa. Saboda shigarwar parasitic na ƙarfin ƙarfin da aka binne yana da ƙanƙanta, mahimmancin matattarar mitar sa zai zama mafi kyau fiye da ƙarfin ƙarfin talakawa ko ƙarancin ƙarfin ESL.
Saboda balagar aiwatarwa da fasaha da kuma buƙatar ƙirar babban sauri don tsarin samar da wutar lantarki, ana amfani da fasahar ƙarfin binne da yawa. Ta amfani da fasahar ƙarfin binnewa, dole ne mu fara lissafin girman faifan faifan faifan hoto Hoto 6 madaidaicin faifan ƙimar lissafi
Wanne na:
C shine ƙarfin ƙarfin da aka binne (capacitance farantin)
A shine yankin faranti masu lebur. A mafi yawan ƙirar, yana da wahala a ƙara yankin tsakanin faranti na lebur lokacin da aka ƙaddara tsarin
D_ K shine madaidaiciyar madaidaiciyar madaidaiciya tsakanin faranti, kuma ƙarfin tsakanin faranti daidai gwargwado ne ga madaidaicin dielectric.
K shine izinin izini, wanda kuma ake kira vacuum permittivity. Tsayin jiki ne tare da ƙimar 8.854 187 818 × 10-12 farad / M (F / M);
H shine kauri tsakanin jirage, kuma ƙarfin da ke tsakanin faranti ya yi daidai da kauri. Don haka, idan muna son samun babban ƙarfin aiki, muna buƙatar rage kaurin interlayer. 3M c-ply binne capacitance abu iya cimma wani interlayer dielectric kauri daga 0.56mil, da kuma dielectric m 16 ƙwarai ƙara capacitance tsakanin faranti.
Bayan lissafi, 3M c-ply binne capacitance abu zai iya cimma wani inter farantin capacitance na 6.42nf da murabba’in inch.
A lokaci guda kuma, ya zama dole a yi amfani da kayan aikin kwaikwayo na PI don daidaita ƙimar PDN, don ƙayyade tsarin ƙirar ƙira na katako guda ɗaya da kuma guje wa ƙirar ƙirar ƙarfin da aka binne da madaidaicin ƙarfin. Hoto na 7 yana nuna sakamakon kwaikwayon PI na ƙirar ƙarfin binnewa, kawai la’akari da tasirin ƙarfin jirgi na tsakiya ba tare da ƙara tasirin keɓaɓɓen ƙarfin ba. Ana iya ganin cewa kawai ta hanyar haɓaka ƙarfin da aka binne, an inganta ingantaccen tsarin karkatacciyar wutar lantarki, musamman sama da 500MHz, wanda shine madaidaicin madaidaicin matakin matakin katako mai sauƙin tace capacitor yana da wahalar aiki. A capacitor jirgin iya yadda ya kamata rage ikon impedance.