Chophikacho chimapangidwa ndi silicon yoyera (Si). Nthawi zambiri amagawidwa mu 6-inchi, 8-inchi, ndi 12-inchi, chophatikiziracho chimapangidwa kutengera chowotcha ichi. Zophika za silicon zokonzedwa kuchokera ku ma semiconductors apamwamba kwambiri kudzera munjira monga kukoka makristalo ndi kudula zimatchedwa wafers beca.ntchito ndi zozungulira mawonekedwe. Magawo osiyanasiyana ozungulira amatha kusinthidwa pazitsulo za silicon kuti zikhale zopangidwa ndi magetsi apadera. ntchito Integrated dera mankhwala. Ma Wafers amadutsa munjira zingapo zopangira semiconductor kuti apange magawo ang'onoang'ono ozungulira, kenako amadulidwa, kupakidwa, ndikuyesedwa kukhala tchipisi, omwe amagwiritsidwa ntchito kwambiri pazida zosiyanasiyana zamagetsi. Zida za Wafer zakhala ndi zaka zopitilira 60 zakusinthika kwaukadaulo komanso chitukuko cha mafakitale, ndikupanga mafakitale omwe amayendetsedwa ndi silicon ndikuphatikizidwa ndi zida zatsopano za semiconductor.
80% ya mafoni ndi makompyuta padziko lonse lapansi amapangidwa ku China. China imadalira zogulira kunja kwa 95% ya tchipisi tambiri tambiri, kotero China imawononga US $ 220 biliyoni chaka chilichonse kuitanitsa tchipisi, zomwe zimawirikiza kawiri mafuta aku China pachaka. Zida zonse ndi zida zokhudzana ndi makina a photolithography ndi kupanga chip zimatsekedwa, monga zowotcha, zitsulo zoyera kwambiri, makina ojambulira, etc.
Lero tikambirana mwachidule za mfundo yochotsa kuwala kwa UV pamakina ophatikizika. Polemba deta, m'pofunika kuti mulowetse chipata choyandama pogwiritsira ntchito VPP yothamanga kwambiri pachipata, monga momwe tawonetsera pa chithunzi pansipa. Popeza jekeseni jekeseni alibe mphamvu kulowa mphamvu khoma la silicon okusayidi filimu, akhoza kukhalabe mmene zinthu zilili, choncho tiyenera kupereka ndalama kuchuluka kwa mphamvu! Apa ndi pamene kuwala kwa ultraviolet kumafunika.
Pamene chipata choyandama chilandira kuwala kwa ultraviolet, ma elekitironi omwe ali pachipata choyandama amalandira mphamvu ya kuwala kwa ultraviolet quanta, ndipo ma elekitironi amakhala ma elekitironi otentha ndi mphamvu kuti alowe mu khoma lamphamvu la filimu ya silicon oxide. Monga momwe tawonetsera pachithunzichi, ma elekitironi otentha amalowa mufilimu ya silicon oxide, amapita ku gawo lapansi ndi pachipata, ndikubwerera kumalo ofufutika. The erasing operation zitha kuchitika polandira kuwala kwa ultraviolet, ndipo sangathe kuzimitsa pakompyuta. Mwa kuyankhula kwina, chiwerengero cha bits chikhoza kusinthidwa kuchokera ku "1" kupita ku "0", ndi mbali ina. Palibe njira ina koma kufufuta zonse zomwe zili mu chip.
Tikudziwa kuti mphamvu ya kuwala imayenderana mosagwirizana ndi kutalika kwa mawonekedwe a kuwala. Kuti ma elekitironi akhale ma elekitironi otentha ndipo motero kukhala ndi mphamvu yolowera filimu ya okusayidi, kuwala kwa kuwala ndi utali wofupikitsa wavelength, ndiko kuti, kuwala kwa ultraviolet, kumafunika kwambiri. Popeza kuti nthawi yofufuta imadalira kuchuluka kwa ma photon, nthawi yofufutayo siingafupikitsidwe ngakhale pamafunde amfupi. Nthawi zambiri, kufufuta kumayamba pomwe kutalika kwa mafunde kumakhala kozungulira 4000A (400nm). Imafika pakukhazikika mozungulira 3000A. Pansi pa 3000A, ngakhale kutalika kwa mafunde kumakhala kochepa, sikungakhale ndi vuto lililonse pakuchotsa nthawi.
Muyezo wofufutira ndi UV nthawi zambiri ndi kuvomereza kuwala kwa ultraviolet komwe kumakhala kutalika kwake kwa 253.7nm komanso kulimba kwa ≥16000 μ W / cm². Ntchito yofufuta imatha kumalizidwa ndi nthawi yowonekera kuyambira mphindi 30 mpaka maola atatu.
Nthawi yotumiza: Dec-22-2023