Taw qhia
Nyob rau hauv lub siab precision thiab complex teb ntawm semiconductor manufacturing,Tshuaj Mechanical Polishing (CMP)yog ib qho tseem ceeb thev naus laus zis rau kev tsim cov flawless, atomically du nto yuav tsum tau rau niaj hnub electronics. Feem ntau hu ua Chemical Mechanical Planarization, cov txheej txheem no yog qhov kawg, cov kauj ruam tseem ceeb hauv silicon wafer fabrication, kom ntseeg tau tias wafers ua tau raws li qhov yuav tsum tau ua kom nruj rau thickness, flatness, thiab nto smoothness. Cov tshuab ua haujlwm zoo tshaj plaws uas ua txoj haujlwm no ua ke nrog ntau lub subsystems tseem ceeb, txhua tus ua lub luag haujlwm tseem ceeb hauv kev ua tiavnanoscale zoo meej. Kab lus no tshawb txog cov ntsiab lus tseem ceeb ntawm lub tshuab wafer polishing niaj hnub thiab lawv cov haujlwm sib koom ua ke.
1. Lub taub hau Polishing: Precision Workholding
Covpolishing taub hauyog ib qho tseem ceeb ntawm kev tsim kho lub luag haujlwm rau kev ruaj ntseg tuav cov silicon wafer nyob rau hauv qhov chaw thaum tag nrho cov txheej txheem. Nws ua ntau dua li tuav; nws siv qhov kev tswj xyuas meej, txawm tias lub siab, nias lub ntsej muag wafer- nqes tawm tsam siab - nrawm tig polishing ncoo. Lub siab tsis sib xws no thoob plaws tag nrho wafer nto yog qhov tseem ceeb los xyuas kom meej cov khoom siv zoo ib yam thiab tsis txhob muaj qhov chaw nyob.
- los yog hauv qab - polishing, uas tuaj yeem ua rau wafer tsis muaj txiaj ntsig rau siab -kawg daim ntawv thov xws li microprocessors thiab nco chips.
2. Lub Polishing Pad: Lub Interface rau Abrasion
Ua haujlwm hauv tandem nrog lub taub hau polishing yog qhovpolishing ncoo, ib tug consumable Cheebtsam uas nws cov khoom muaj feem cuam tshuam rau qhov kawg tshwm sim. Feem ntau yog ua los ntawm cov khoom siv polymeric ntxeem tau, cov ntaub qhwv lub ntsej muag, nrog rau nwsmicrofibers thiab cov khoom me me, tsim qhov tsim nyog kev sib txhuam nrog lub wafer nto nyob rau hauv siab. Qhov no mechanical kev sib cuam tshuam, pab los ntawm cov tshuaj, systematically tshem tawm cov khoom. Lub ncoo rotates ntawm kev kub ceev thiab yuav tsum tswj nws cov kev ntxhib los mos thiab resilience thoob plaws hauv lub voj voog polishing kom zoo zom cov wafer nto mus rau qhov xav tau smoothness.
3. Lub Sl Lub Slurry Delivery System: Tus Neeg Siv Tshuaj
Tej zaum qhov feem ntau txhais ntawm CMP yog qhovslurry, ib qho kev sib xyaw tshwj xeeb uas qhia txog "tshuaj lom neeg" rau lub tshuab polishing. Qhov no slurry yog dispensed mus rau lub polishing ncoo ntawm akev xa khoomuas ua kom muaj qhov sib npaug thiab sib npaug. Lub slurry nws tus kheej yog ib tug complex formulation uas muaj:
Abrasive Particles:Cov ntaub ntawv zoo li silica los yog alumina uas mechanically scour nto.
Oxidizing Agents:Cov tshuaj uas ua rau lub ntsej muag wafer (piv txwv li, silicon) los hloov nws mus rau hauv ib txheej softer oxide, ua kom yooj yim tshem tawm.
Chelating Agents:Cov tshuaj uas khi nrog cov reacted los ntawm - cov khoom, dissolving lawv mus rau hauv lub slurry los tiv thaiv redeposition los yog tsub zuj zuj nyob rau hauv lub freshly polished wafer nto.
Kev sib koom ua ke ntawm cov tshuaj corrosion los ntawm slurry thiab mechanical abrasion los ntawm lub ncoo ua rau kev ua tiav ntawm qhov roughness ntawm qhov tsawg li tsawg.0.1nm ua, uas yog qhov tseem ceeb rau kev tso tawm cov txheej txheem tom ntej hauv ntau- txheej txheej sib xyaw ua ke.
4. Lub Carrier thiab Conditioning System
Txhawm rau tswj cov txheej txheem sib xws ntawm ib lub wafer mus rau lwm qhov thiab thoob plaws hauv lub ncoo lub neej, kev txhawb nqa yog qhov tseem ceeb. Covwafer cab kujruaj ntseg tuav lub wafer thaum polishing. Tsis tas li ntawd, apad txiasfeem ntau siv concurrently. Cov khoom no ua rau lub ntsej muag polishing nyob rau hauv lub sijhawm tiag -, tiv thaiv nws los ntawm glazed thiab saturated los ntawm - cov khoom, yog li ua kom cov polishing ruaj khov thiab ua tiav zoo.
5. Lub Module Ntxuav: Ua kom huv huv
Thaum cov txheej txheem kev npaj ua tiav, txhua qhov seem slurry lossis microscopic hais rau ntawm wafer nto yuav swb lub hom phiaj ntawm polishing. Yog li ntawd, ib tug integratedtu moduleyog tus qauv tseem ceeb ntawm cov tshuab niaj hnub. Cov qauv no huv huv huv lub wafer tam sim ntawd tom qab polishing kom tshem tawm tag nrhokev puas tsuaj los yog muaj kab mob. Cov kauj ruam no yog qhov tseem ceeb rau kev tiv thaiv cov kab mob los ntawm kev cuam tshuam kev ua haujlwm thiab kev ntseeg siab ntawm cov khoom siv semiconductor zaum kawg.
Xaus
Lub tshuab wafer polishing niaj hnub yog qhov zoo kawg nkaus ntawm engineering precision, qhov twg chemistry thiab mechanics converge. Nws cov khoom tseem ceeb - lub taub hau polishing, ncoo, slurry system, carrier, thiab cleaner - ua hauj lwm nyob rau hauv zoo sib haum xeeb los hloov ib tug ntxhib wafer mus rau hauv ib tug ultrasmooth, defect -dawb substrate. Raws li qhov kev thov rau me me, sai dua, thiab muaj zog semiconductors txuas ntxiv mus ntxiv, tsav qhov xav tau ntau dua kev npaj, qhov kev hloov pauv txuas ntxiv ntawm cov khoom no yuav nyob hauv plawv ntawm kev nce qib semiconductor technology.
