High-Purity Liquid Argon hauv Semiconductor Manufacturing thiab Daim Ntawv Qhia Kev Muag Khoom
Nrog rau txoj kev loj hlob sai ntawm lub ntiaj teb no semiconductor kev lag luam, nti manufacturing txheej txheem tau nkag mus rau nanometer era. Hauv cov txheej txheem tsim khoom no tsis tshua muaj tseeb, txhua feeb ib puag ncig kev hloov pauv lossis cov khoom tsis huv tuaj yeem ua rau cov khoom seem ntawm tag nrho cov wafers. Yog li ntawd, hluav taws xob tshwj xeeb gases thiab high-purity industrial gases ua lub luag hauj lwm irreplaceable. Ntawm lawv, siab purity kua argon tau dhau los ua ib qho tseem ceeb ntawm cov khoom siv tseem ceeb hauv kev ua haujlwm niaj hnub ntawm semiconductor fabs vim nws qhov kawg tshuaj inertness thiab lub cev zoo heev.
Tsab ntawv xov xwm no yuav tshawb xyuas cov ntaub ntawv tseem ceeb ntawm cov kua argon hauv cov txheej txheem tsim khoom thiab muab cov lus qhia kev tshaj lij rau cov tuam txhab xa khoom lag luam.
Cov ntawv thov tseem ceeb: Vim li cas Liquid Argon Inseparable los ntawm Semiconductor Manufacturing?
Nyob rau hauv pem hauv ntej-End-of-Line (FEOL) semiconductor manufacturing txheej txheem, kua argon rau semiconductors feem ntau yog siv nyob rau hauv cov nram qab no core theem uas txiav txim cov khoom yield:
- Lub cev Vapor Deposition (PVD) / Sputtering: Ultra-ntshiab argon roj, tsim los ntawm gasification ntawm kua argon, yog lub ntsiab tseem ceeb ua hauj lwm roj nyob rau hauv PVD sputtering txheej txheem. Nyob rau hauv lub tshuab nqus tsev chamber, argon ions yog ceev los ntawm ib tug hluav taws xob teb los bombard lub hom phiaj cov ntaub ntawv, ua rau lub hom phiaj atoms dislodge thiab tso nyiaj sib npaug ntawm lub wafer nto los ua ib tug hlau zaj duab xis. High purity yog qhov yuav tsum tau ua ua ntej kom ntseeg tau tias qhov ntom ntom thiab hluav taws xob sib xws ntawm zaj duab xis.
- Kev nyab xeeb kiag li Inert Protective Atmosphere: Thaum lub sij hawm rub cov txheej txheem ntawm monocrystalline silicon (xws li cov txheej txheem Czochralski) thiab cov txheej txheem kub-kub annealing, silicon yooj yim reacts nrog oxygen ntawm qhov kub thiab txias. Yog li ntawd, cov roj argon yuav tsum tau ua kom tsis tu ncua los hloov cov huab cua, muab qhov chaw tsis muaj zog kiag li cais tawm ntawm cov pa thiab noo noo, yog li ua kom muaj kev loj hlob zoo tshaj plaws ntawm silicon crystal lattice.
- Cryogenics thiab Wafer Cleaning Technology: Nyob rau hauv cov txheej txheem siab heev xws li Extreme Ultraviolet (EUV) lithography, ultra-low kub yam ntxwv ntawm cov kua argon (boiling point -186 ° C) yog qee zaum siv rau cov cua txias ntawm cov cuab yeej precision. Ib txhij, argon aerosol thev naus laus zis kuj tseem siv rau nanometer-scale lub cev micro-tu ntawm qhov chaw wafer, uas tuaj yeem tsis muaj kev puas tsuaj tshem tawm cov teeb meem me me.
Kev Txiav Txim Siab Tshaj Tawm: Cov qauv nruj ntawm High-Purity Liquid Argon
Kev lag luam semiconductor cov kev xav tau rau cov khoom siv raw yog qhov hnyav heev. Ordinary industrial-qib kua argon feem ntau tsuas yog xav tau kom ncav cuag purity ntawm 99.9% lossis 99.99%, tab sis qhov no yog deb ntawm kev ua kom tau raws li qhov xav tau ntawm kev tsim cov chips. Rau tsim nyog siab purity kua argon, lub hauv paus purity yog feem ntau yuav tsum tau mus txog 99.999% (5N), thiab nyob rau hauv siab heev nodes, nws txawm yuav tsum mus txog 99.9999% (6N) los yog siab dua.
Qhov tseem ceeb tshaj yog kev tswj impurity. Cov ntsiab lus ntawm cov pa oxygen, nitrogen, noo noo, tag nrho cov hydrocarbons (THC), thiab cov kab hlau ions yuav tsum tau tswj nruj me ntsis ntawm ppb (ib feem ntawm ib billion) lossis txawm ppt (qhov ib trillion) qib. Txawm hais tias ib feeb ntawm cov impurities sib tov rau hauv cov kav dej, nws yuav tsim micro-defects ntawm wafer nto, ua rau nti luv Circuit Court los yog tam sim no to, ncaj qha rub tus nqi tawm los thiab ua rau kev lag luam poob loj.
Kev Qhia Txog Kev Muag Khoom: Yuav ntsuas thiab xaiv tus kws tshaj lij Liquid Argon Supplier li cas?
Muab lub luag haujlwm txiav txim siab ntawm high-purity gases hauv kev ua haujlwm ntawm cov kab ntau lawm, nrhiav thiab ua kom muaj peev xwm ua tau zoo thiab muaj peev xwm ua kua argon tus neeg muag khoom yog lub luag haujlwm tseem ceeb rau kev yuav khoom thiab pab pawg xa khoom. Thaum ntsuam xyuas cov neeg xa khoom muaj peev xwm, nws raug nquahu kom tsom mus rau peb qhov loj me hauv qab no:
Rigorous Quality Control and Testing Capabilities: Cov khoom lag luam zoo heev yuav tsum tau nruab nrog cov cuab yeej tshawb fawb saum toj kawg nkaus xws li Gas Chromatographs (GC) thiab Mass Spectrometers (MS). Lawv yuav tsum muaj peev xwm muab cov ncauj lus kom ntxaws COA (Certificate of Analysis) rau txhua pawg los xyuas kom meej qhov sib xws hauv purity ntawm cov khoom xa tuaj.
Strong Supply Chain Resilience thiab Delivery Stability: Fabs feem ntau ua haujlwm 24/7/365, thiab tus nqi poob qis yog siab heev. Yog li ntawd, cov neeg muag khoom yuav tsum muaj peev xwm khaws cia cov kua hauv zos loj, lawv tus kheej lub nkoj ntawm cov tsheb thauj khoom cryogenic, thiab cov phiaj xwm kev pabcuam rau kev ruaj ntseg thaum muaj xwm txheej ceev.
Advanced Containers thiab Anti-"Secondary Contamination" Technology: Txawm hais tias cov pa roj purity siab npaum li cas, nws tsis muaj txiaj ntsig yog tias muaj kab mob thaum thauj mus los. Lub hom phiaj yuav tsum yog nyob rau ntawm tus neeg muag khoom lub tso tsheb hlau luam cryogenic thiab tanker sab hauv phab ntsa kho cov thev naus laus zis (xws li seb nws puas tau ua tiav Electropolishing / EP kev kho mob), nrog rau Cov Txheej Txheem Kev Ua Haujlwm (SOP) rau lub valve thiab cov kav dej purging thaum lub sij hawm sau thiab hloov cov theem, kom ntseeg tau tias siab purity tuaj yeem xa ncaj qha los ntawm cov neeg siv khoom.
Tag
Raws li kev nce qib txuas ntxiv ntawm Moore Txoj Cai, cov kua purity siab argon tsis yog ib qho khoom siv yooj yim xwb, tab sis kuj yog "kev saib tsis pom" rau cov txheej txheem semiconductor siab heev. Kev tshawb fawb thiab nruj me ntsis ntsuas thiab xaiv a kua argon tsum nrog rau kev muaj zog los xyuas kom meej cov khoom zoo thiab ruaj khov ntawm cov kua argon rau semiconductors yog lub hauv paus tseem ceeb rau txhua lub lag luam semiconductor los txhim kho cov txheej txheem tawm los thiab yeej hauv kev sib tw ua lag luam thoob ntiaj teb.
FAQ
Q1: Yuav ua li cas nruj me ntsis tswj impurity rau siab purity kua argon siv nyob rau hauv semiconductor manufacturing?
Teb: nruj heev. Semiconductor-qib kua argon tsis tsuas yog yuav tsum muaj tag nrho purity ntawm 99.999% (5N) lossis siab dua, tab sis qhov tseem ceeb tshaj, tso cov kev txwv nruj rau cov impurities tshwj xeeb. Piv txwv li, cov dej noo (H2O) thiab cov pa oxygen (O2) feem ntau yuav tsum tau khaws cia qis dua 10 ppb; rau 7nm thiab qis dua cov nodes, hlau ion impurities txawm xav tau ppt-theem (qhov ib trillion) tswj.
Q2: Thaum xaiv cov khoom siv kua argon, yuav tiv thaiv kev kis kab mob hauv nruab nrab thaum thauj thiab hloov mus li cas?
Teb: Tus yuam sij rau kev tiv thaiv kev kis kab mob thib ob yog nyob rau hauv cov khoom siv kho vajtse thiab kev ua haujlwm tshwj xeeb. Thaum lub sij hawm yuav khoom, paub meej tias tus neeg muag khoom puas siv high-purity cryogenic tankers nplooj siab rau semiconductors (lub puab liner xav tau tshwj xeeb polishing thiab passivation). Lub caij no, tshuaj xyuas lawv cov SOP rau ntawm qhov chaw tso kua dej, kom ntseeg tau tias muaj cov pa roj purity txaus thiab hloov pauv ua ntej txuas cov kav dej, thiab cov khoom siv saib xyuas cov pa oxygen hauv online tau nruab.
Q3: Dab tsi tshwj xeeb kev puas tsuaj yuav ua rau lub wafer yog tias cov kua argon rau semiconductors tsis ua raws li cov qauv purity?
Teb: Yog tias qhov purity tsis zoo (xws li sib xyaw nrog cov pa oxygen lossis noo noo), nws yuav ua rau qhov kev xav tsis zoo ntawm oxidation tshwm sim ntawm silicon wafers thaum kub kub annealing lossis siv lead ua rub cov txheej txheem. Hauv PVD sputtering, impurities yuav sib xyaw rau hauv cov yeeb yaj kiab hlau, hloov cov yeeb yaj kiab tiv thaiv thiab lub cev. Cov no yuav ncaj qha ua rau tuag taus xws li luv luv circuits thiab qhib circuits ntawm lub wafer, drastic txo cov nti tawm los.
