Tare da ci gaba da haɓaka fasahar semiconductor, a cikin masana'antar semiconductor har ma da masana'antar photovoltaic, buƙatun ingancin saman substrate na wafer ko takardar epitaxial suma suna da tsauri sosai. Don haka, menene buƙatun inganci na wafers?wafer ɗin saffirMisali, waɗanne alamomi za a iya amfani da su don tantance ingancin saman wafers?
Mene ne alamun kimanta wafers?
Alamomi Uku
Ga wafers ɗin sapphire, alamun kimantawa sune jimillar karkacewar kauri (TTV), lanƙwasa (Bow) da Warp (Warp). Waɗannan sigogi guda uku tare suna nuna daidaiton lanƙwasa da kauri na wafer ɗin silicon, kuma suna iya auna matakin ripple na wafer ɗin. Ana iya haɗa corrugation ɗin da lanƙwasa don kimanta ingancin saman wafer ɗin.
Menene TTV, BOW, Warp?
TTV (Bambancin Kauri Gabaɗaya)
TTV shine bambanci tsakanin matsakaicin kauri da mafi ƙarancin wafer. Wannan siga muhimmin ma'auni ne da ake amfani da shi don auna daidaiton kauri wafer. A cikin tsarin semiconductor, kauri wafer dole ne ya kasance iri ɗaya a saman gaba ɗaya. Yawanci ana yin ma'auni a wurare biyar akan wafer kuma ana ƙididdige bambancin. A ƙarshe, wannan ƙimar muhimmin tushe ne don tantance ingancin wafer.
Rukayya
Baka a cikin masana'antar semiconductor yana nufin lanƙwasa wafer, yana 'yantar da nisan da ke tsakanin tsakiyar wafer mara lanƙwasa da kuma matakin tunani. Kalmar wataƙila ta fito ne daga bayanin siffar abu lokacin da aka lanƙwasa shi, kamar siffar baka mai lanƙwasa. Ana bayyana ƙimar baka ta hanyar auna karkacewar da ke tsakanin tsakiya da gefen wafer ɗin silicon. Wannan ƙimar yawanci ana bayyana ta da micrometers (µm).
Warp
Warp wani abu ne na duniya na wafers wanda ke auna bambanci tsakanin matsakaicin da mafi ƙarancin tazara tsakanin tsakiyar wafer mara lanƙwasa da kuma jirgin da aka yi amfani da shi. Yana wakiltar nisan da ke tsakanin saman wafer ɗin silicon zuwa jirgin.
Menene bambanci tsakanin TTV, Bow, da Warp?
TTV tana mai da hankali kan canje-canje a cikin kauri kuma ba ta damu da lanƙwasa ko karkatar da wafer ɗin ba.
Baka yana mai da hankali kan lanƙwasa gaba ɗaya, musamman idan aka yi la'akari da lanƙwasa na tsakiyar wurin da gefen.
Warp ya fi cikakke, gami da lanƙwasawa da murɗe dukkan saman wafer.
Duk da cewa waɗannan sigogi guda uku suna da alaƙa da siffar da halayen geometric na wafer ɗin silicon, ana auna su kuma ana bayyana su daban-daban, kuma tasirinsu akan tsarin semiconductor da sarrafa wafer shima ya bambanta.
Mafi ƙanƙantar sigogi uku, mafi kyau, da kuma girman sigogin, mafi girman tasirin mummunan akan tsarin semiconductor. Saboda haka, a matsayinmu na mai aikin semiconductor, dole ne mu fahimci mahimmancin sigogin bayanin martaba na wafer don dukkan tsarin aiwatarwa, yin tsarin semiconductor, dole ne mu kula da cikakkun bayanai.
(sanya ido)
Lokacin Saƙo: Yuni-24-2024