Ukushukuma kolungelelwaniso kwizixhobo ze-lithography akusoloko kubonakala njengokusilela okukodwa. Kuvela kancinci kancinci — impazamo ye-overlay ingena ngaphandle kwe-spec kwiinguqu ezithile, okanye ukuphindaphindeka okulungile kusasa kwaye kuthandabuzeka emva kwemini. Xa umenzi wezixhobo ze-semiconductor esiza kuthi enelo patheni kwinkqubo yokuvezwa esekwe kwi-gantry, i-instinct ecaleni lakhe yayikukujonga kuqala ii-optics kunye nee-stage motors. I-instinct efanelekileyo — ezo zihlala zikrokrelwa. Kule meko, isiseko solwakhiwo phantsi kwe-gantry sajika saba negalelo elikhulu kunokuba nabani na wayelindele.
Ingxaki yoLungelelaniso
Izixhobo zasebenzisa isakhelo sentsimbi esidityanisiweyo ukuthwala intloko ye-optical kuyo yonke i-envelope yokusebenza. Ephepheni, isakhelo sahlangabezana nokunyamezelana kwaso okungaguqukiyo. Nangona kunjalo, kwimveliso, umenzi wayebona impazamo ye-overlay eyayihambelana ngokukhululekileyo nexesha losuku kunye nokutshintsha kobushushu-umgangatho wevenkile-ipatheni eyayikhomba ekwandeni kobushushu endaweni yempazamo yoomatshini okanye yenkqubo yolawulo. I-coefficient yentsimbi yokwandiswa kobushushu, kunye nokwakhiwa kwe-welded yesakhelo, kwakuthetha ukuba i-gantry span ngokwayo yayihamba ngesixa esincinci kodwa sokwenyani njengoko ubushushu be-ambient butshintsha ngosuku oluqhelekileyo lwemveliso. Kwinkqubo apho ulungelelwaniso lwe-sub-micron luyimfuneko esisiseko, ii-microns ezimbalwa zentshukumo yesakhiwo esingabalwanga zanele ukutyhala impazamo ye-overlay ngaphandle kwe-spec rhoqo - olu hlobo lwengxaki engapheliyo, enzima ukuyifumanisa etya iiveki zexesha lobunjineli ngaphambi kokuba nabani na abuze isakhelo.
Kutheni iGranite yayiyimpendulo yesakhiwo
Ukutshintsha i-gantry yentsimbi edibeneyo nge-granite equivalent ayilotshintsho olufana nolwe-like — kutshintsha uqikelelo loyilo. I-coefficient ephantsi ye-granite yokwandiswa kobushushu kunye ne-coefficient ephezulu yokudambisa ithetha ukuba isakhiwo siya kuphendula kancinci kwaye singabi nzima kakhulu kutshintsho olufanayo lwe-ambient. Okufanelekileyo kanye: i-granite ayithwali uxinzelelo lwangaphakathi olushiyekileyo njengolwase-welded steel, ngoko ayiqhubeki inyakazela ngokwemilinganiselo kwiminyaka emininzi yokujikeleza kobushushu ngendlela isakhiwo sesinyithi esenziwe ngayo.
Umngeni wobunjineli wawungekuko ukukhetha izinto kodwa wawukukusebenza — umqadi webhulorho ye-gantry ogubungela yonke i-envelope yokusebenza yesixhobo wawufuna ukwenziwa ngomatshini njengesakhiwo eside, esineqhekeza elinye ukuze kuthintelwe ukungeniswa kwamalungu aza kuphinda avelise i-granite yokungazinzi eyayifanele isonjululwe. Lo ngumbuzo womthamo womatshini kunye nezinto; ayinguye wonke umenzi wegranite onokucubungula umqadi wobude nobunzima obunjalo ukuya kuthi ga kwi-flatness kunye ne-squareness efunekayo kwiseti enye. Amandla esakhiwo sethu oomatshini bomatshini weqhekeza elinyeizinto zegraniteubude obufikelela kwiimitha ezingama-20 kwenze oku kwalula ukulingana endaweni yokufuna ulungelelwaniso oludibeneyo noludibeneyo.
Iinkcukacha zokuphunyezwa
Umqadi we-gantry wagqitywa nge-optical mounting interfaces yomthengi efakwe ngqo kwi-granite, ebambe ukunyamezelana okuthe tyaba kunye nokuma okuthe nkqo okuhambelana nohlahlo-lwabiwo mali oluseleyo lwenkqubo yokubonisa. Ukugqitywa komphezulu kulandela uthotho lokulinganisa olufanayo olusetyenzisiweyo kwizixhobo zethu ze-granite reference tooling - ezilinganiswe nezixhobo ezilandelelwa ngokwemigangatho ye-national metrology Institute - ngoko ke uhlolo oluzayo lomthengi lwalunamaxwebhu ahambelanayo, endaweni yokufuna ukuqinisekisa ngokuzimeleyo ukuba tyaba ngaphambi kokufakwa.
Ubunzima yayiyinto yesibini ekufuneka iqwalaselwe ngokunyanisekileyo: i-granite ixinene kunecandelo lesinyithi elilinganayo, kwaye iimoto zesiteji zomthengi kunye nesakhiwo senkxaso ziyafuneka ukuze kuhlangatyezwane nolo mahluko. Olu lutshintshiselwano lokwenyani loyilo lwe-granite gantry, asinto yokuyifihla - iingenelo zobushushu kunye nokufuma ziza nesohlwayo esikhulu ekufuneka sicwangciswe endaweni yokungahoywa.
Isiphumo
Emva kokufakela, umthengi uxele ukuba impazamo ye-overlay ayisalandelwa ngexesha losuku okanye ubushushu be-ambient ngendlela eyayinjalo ngaphambili - ulwalamano olwalukhombe ekutshintsheni kobushushu kwisifo sokuqala lwanyamalala kakhulu. Ukuphindaphinda kwiinguqu kuye kwahlala kufana, nto leyo eyayibaluleke kakhulu ekusebenzeni kunalo naliphi na inani elinye lokuchaneka kwe-peak, kuba isivuno semveliso sixhomekeke ekuhambelaneni kuyo yonke i-run endaweni yokulinganisa okulungile.
Oko Kucetyiswa Ngakumbi Ngakumbi Kweli Candelo
Izinto ezisisiseko zesakhiwo kulula ukuzityeshela xa kulungiswa iingxaki zokulungelelanisa kuba azifane zibe yinto yokuqala etyholwayo - i-optics, ii-control loops, kunye ne-stage mechanics ezibekwa ityala kuqala, kwaye ngamanye amaxesha ngokuchanekileyo. Kodwa xa ukushukuma kuhambelana nobushushu endaweni yepateni yomthwalo okanye intshukumo, ifreyimu ngokwayo ifanelwe kujongwa ngaphambi kokuba kuchithe ixesha elingakumbi kulungiswa kwakhona iinkqubo ezingazange zibe yingxaki yokwenyani. Izakhiwo ze-granite gantry kunye ne-bridge azisosisombululo esiqhelekileyo, kwaye azisiso isisombululo esifanelekileyo kuzo zonke iindidi zezixhobo - kodwa kwizicelo apho uzinzo lobushushu lumisela ngokuthe ngqo isivuno, zifanelekile ukuvavanywa kwangethuba kwinkqubo yokuxilonga kunokuba zihlala zinjalo.
Ixesha lokuthumela: Agasti-07-2026