I-High-Purity Liquid Argon ku-Semiconductor Manufacturing kanye ne-Procurement Guide
Ngokuthuthuka okusheshayo kwemboni ye-semiconductor yomhlaba wonke, izinqubo zokukhiqiza ama-chip sezingene ngokugcwele enkathini ye-nanometer. Kule nqubo yokukhiqiza enembe ngokwedlulele, noma ikuphi ukuguquguquka kwemvelo okuncane noma ukungcola kwempahla kungaholela ekulalweni kwenqwaba yamawafa. Ngakho-ke, amagesi akhethekile we-elekthronikhi kanye namagesi emboni ahlanzekile kakhulu adlala indima engenakushintshwa. Phakathi kwabo, ukuhlanzeka okuphezulu kwe-argon liquid isibe ukhiye obalulekile osebenzisekayo ekusebenzeni kwansuku zonke kwendwangu ye-semiconductor ngenxa yokungangeni kwayo kwamakhemikhali ekugcineni kanye nezakhiwo ezinhle kakhulu zomzimba.
Lesi sihloko sizocubungula ngokujulile ukusetshenziswa okubalulekile kwe-liquid argon ezinqubweni zokukhiqiza ama-chip futhi sinikeze umhlahlandlela wokuthenga ochwepheshile wamaqembu ochungechunge lokuhlinzeka ngamabhizinisi.
Izicelo Eziyinhloko: Kungani I-Liquid Argon Ingenakuhlukaniswa Ku-Semiconductor Manufacturing?
Enqubweni yokukhiqiza i-Front-End-of-Line (FEOL) ye-semiconductor, i-argon ewuketshezi yama-semiconductors isetshenziswa ngokuyinhloko ezigabeni ezibalulekile ezilandelayo ezinquma isivuno somkhiqizo:
- I-Physical Vapor Deposition (PVD) / Sputtering: I-Ultra-pure argon gas, eyakhiwe yi-gasification ye-liquid argon, iyigesi esebenzayo esebenza kakhulu ezinqubweni zokuphalaza ze-PVD. Egunjini le-vacuum, ama-argon ion asheshiswa ngendawo kagesi ukuze aqhume okokusebenza okuqondiwe, okubangela ama-athomu okuqondiwe ukuthi aphume futhi abeke ngokulinganayo endaweni eyi-wafer ukuze akhe ifilimu yensimbi. Ukuhlanzeka okuphezulu kuyisidingo sokuqinisekisa ukuminyana nokuvumelana kukagesi kwefilimu.
- I-Atmosphere Evikelekile Engangeni Ephephile: Phakathi nenqubo yokudonsa ye-silicon ye-monocrystalline (njengenqubo ye-Czochralski) kanye nezinqubo zokushisa eziphezulu zokushisa, i-silicon isabela kalula nge-oxygen emazingeni okushisa aphezulu. Ngakho-ke, igesi ye-argon kufanele yethulwe ngokuqhubekayo ukuze ithathe indawo yomoya, inikeze indawo engasebenzi ngokuphelele ehlukaniswe nomoya-mpilo kanye nomswakama, ngaleyo ndlela iqinisekise ukukhula okuphelele kwe-silicon crystal lattice.
- I-Cryogenics ne-Wafer Cleaning Technology: Ezinqubweni ezithuthukisiwe ezifana ne-Extreme Ultraviolet (EUV) lithography, izici zokushisa eziphansi kakhulu ze-argon ewuketshezi (iphuzu lokubilisa -186°C) ngezinye izikhathi zisetshenziswa ezinhlelweni zokupholisa zemishini enembayo. Ngesikhathi esifanayo, ubuchwepheshe be-argon aerosol buphinde busetshenziswe ekuhlanzeni okuncane okubonakalayo kwe-nanometer-scale ezindaweni eziyisicwecwana, ezingasusa ngendlela elimazayo i-particle encane.
Ikhwalithi Inquma Isivuno: Amazinga Aqinile E-High-Purity Liquid Argon
Izidingo zemboni ye-semiconductor yezinto ezingavuthiwe zinzima kakhulu. I-argon ye-liquid yezinga lezimboni evamile ngokuvamile idinga kuphela ukufinyelela ukuhlanzeka okungama-99.9% noma u-99.99%, kodwa lokhu kude nokuhlangabezana nezidingo zokukhiqiza ama-chip. Ngoba abafanelekayo ukuhlanzeka okusezingeni eliphezulu liquid argon, ukuhlanzeka kwesisekelo ngokuvamile kuyadingeka ukuze kufinyelele ku-99.999% (5N), futhi kuma-node athuthukile, kudinga ngisho nokufinyelela ku-99.9999% (6N) noma ngaphezulu.
Okubaluleke kakhulu ukulawula ukungcola. Okuqukethwe komoyampilo, i-nitrogen, umswakama, ingqikithi yama-hydrocarbons (THC), nama-ion ensimbi okulandela umkhondo kufanele kulawulwe ngokuqinile ezingeni le-ppb (izingxenye ngebhiliyoni) noma ngisho ne-ppt (izingxenye ngethriliyoni ngayinye). Ngisho noma inani leminithi lokungcola lihlangana epayipini legesi, lizokwenza amaphutha amancane endaweni eyi-wafer, okubangele ama-chip short circuits noma ukuvuza kwamanje, kwehlise izinga lomkhiqizo ngokuqondile futhi kulethe ukulahlekelwa okukhulu kwezomnotho.
Umhlahlandlela Wokuthenga: Ungalinganisa Kanjani Futhi Ukhethe Umhlinzeki Ochwepheshe Be-Liquid Argon?
Uma kubhekwa indima ewujuqu yamagesi ahlanzekile ekusebenzeni kwemigqa yokukhiqiza, ukuthola nokuvikela umphakeli we-argon we-liquid ofaneleka ngokugcwele futhi onekhono kuwumsebenzi obalulekile wamaqembu okuthengwa kwempahla kanye nama-supply chain. Lapho kuhlolwa abahlinzeki abangaba abahlinzeki, kutuswa ukuthi ugxile kulezi zindlela ezintathu ezilandelayo:
Ukulawula Ikhwalithi Eqinile Namakhono Okuhlola: Abahlinzeki abahle kakhulu kufanele bahlonyiswe ngemishini yokuhlaziya i-top-tier trace efana ne-Gas Chromatographs (GC) kanye ne-Mass Spectrometers (MS). Kufanele bakwazi ukuhlinzeka nge-COA enemininingwane (Isitifiketi Sokuhlaziya) seqeqebana ngalinye ukuze baqinisekise ukuhambisana okuphelele ekuhlanzekeni phakathi kokulethwa.
Ukuzinza Okuqinile Kochungechunge Lokuhlinzeka Nokuletha: Izindwangu ngokuvamile zisebenza 24/7/365, futhi izindleko zesikhathi sokuphumula ziphezulu kakhulu. Ngakho-ke, abahlinzeki kufanele babe namandla amakhulu okugcina uketshezi lwasendaweni, iqoqo labo lamaloli amathangi e-cryogenic, kanye nezinhlelo eziphelele zezimo eziphuthumayo zokuqinisekisa ukuhlinzekwa kwezimo eziphuthumayo.
Iziqukathi Ezithuthukisiwe kanye Nobuchwepheshe Bokulwa “Nesecondary Contamination”: Kungakhathaliseki ukuthi ukuhlanzeka kwegesi kuphakeme kangakanani, akusizi uma kungcolile ngesikhathi sokuthutha. Kumelwe kugxilwe emathangini okugcina amanzi omphakeli kanye nobuchwepheshe bokwelapha odongeni lwangaphakathi lwethangi (njengokuthi ingabe isike yaphathwa nge-Electropolishing/EP), kanye Nezinqubo Ezijwayelekile Zokusebenza (SOP) zokuhlanza ama-valve namapayipi ngesikhathi sokugcwalisa nokudlulisa, okuqinisekisa ukuthi ukuhlanzeka okuphezulu kungalethwa ngokuqondile kusuka embonini kuya etheminali yekhasimende.
Ukugcina
Ngaphansi kokuthuthuka okuqhubekayo koMthetho kaMoore, i-argon ye-liquid ehlanzekile ephezulu ayiyona nje into esetshenziswayo eyisisekelo, kodwa futhi "i-escort engabonakali" yezinqubo ezithuthukisiwe ze-semiconductor. Ukuhlola nokukhetha ngokwesayensi nangokuqinile a umphakeli we-argon we-liquid ngamandla aphelele okuqinisekisa ukuhlinzekwa kwekhwalithi ephezulu kanye nokuzinzile kwe-liquid argon yama-semiconductors kuyisisekelo esiyinhloko sawo wonke amabhizinisi okukhiqiza ama-semiconductor ukuthuthukisa isivuno senqubo futhi awine emqhudelwaneni wezimakethe zomhlaba.
FAQ
Q1: Kuqine kangakanani ukulawulwa kokungcola kwe-argon ephezulu ye-liquid ehlanzekile esetshenziswa ekwenziweni kwe-semiconductor?
Impendulo: Iqinile kakhulu. I-argon ye-liquid ye-semiconductor ayidingi nje kuphela ukuhlanzeka okuphelele okungu-99.999% (5N) noma ngaphezulu, kodwa okubaluleke kakhulu, ibeka imingcele eqinile ekungcoleni okuthile. Isibonelo, amazinga omswakama (H2O) kanye ne-oxygen (O2) ngokuvamile adingeka ukuthi agcinwe ngaphansi kwe-10 ppb; ku-7nm nangaphansi kwamanode athuthukile, ukungcola kwe-ion yensimbi kudinga ngisho nokulawulwa kwezinga le-ppt (izingxenye ngethriliyoni ngayinye).
I-Q2: Uma ukhetha umphakeli we-argon owuketshezi, ukungcoliswa kwesibili ngesikhathi sokuthutha nokudlulisa kungavinjelwa kanjani?
Impendulo: Isihluthulelo sokuvimbela ukungcoliswa kwesibili sisezisetshenziswa zehadiwe zomphakeli kanye nezici zokusebenza. Ngesikhathi sokuthenga, qinisekisa ukuthi umphakeli usebenzisa amathangi okuhlanzeka okuphezulu anikezelwe kuma-semiconductors (i-liner yangaphakathi idinga ukupholishwa okukhethekile kanye ne-passivation). Ngaleso sikhathi, buyekeza i-SOP yabo ngokuthulula uketshezi esizeni, uqinisekise ukuthi ukuhlanzwa nokushintshwa kwegesi okuhlanzeke kakhulu kuyenziwa ngaphambi kokuxhuma amapayipi, kanye nokuthi kufakwe imishini yokuhlola i-oxygen/umswakama ku-inthanethi.
I-Q3: Imuphi umonakalo othize ozowubangela ku-wafer uma i-argon ye-liquid yama-semiconductors ingahlangabezani nezindinganiso zokuhlanzeka?
Impendulo: Uma ubumsulwa busezingeni eliphansi (njengokuxuba ne-trace oxygen noma umswakama), kuzodala ukusabela okungalindelekile kwe-oxidation ebusweni kumawafa e-silicon ngesikhathi sezinqubo zokudonsa izinga lokushisa eliphezulu noma zokudonsa ikristalu. Ku-PVD sputtering, ukungcola kuzohlangana kufilimu yensimbi efakwe, iguqule ukumelana kwefilimu kanye nezakhiwo zomzimba. Lokhu kuzodala ngokuqondile ukukhubazeka okubulalayo njengamasekhethi amafushane namasekhethi avulekile ku-wafer, kunciphisa kakhulu isivuno se-chip.
