Wafer warpage, choti achite?

Pakuyika kwina, zida zonyamula zokhala ndi ma coefficients osiyanasiyana owonjezera kutentha zimagwiritsidwa ntchito. Panthawi yolongedza, chophikacho chimayikidwa pagawo loyikapo, ndiyeno kutentha ndi kuzizira kumachitidwa kuti amalize kuyika. Komabe, chifukwa cha kusagwirizana pakati pa chiwonjezeko chowonjezera chamafuta ndi chophatikizika, kupsinjika kwamafuta kumapangitsa kuti mkatewo ukhale wopindika. Bwerani mudzawone ndi mkonzi~

Wafer warpage ndi chiyani?

WaferWarpage amatanthauza kupindika kapena kupindika kwa chowotcha panthawi yolongedza.WaferWarpage ingayambitse kupatuka kwamalumikizidwe, zovuta zowotcherera komanso kuwonongeka kwa chipangizocho panthawi yolongedza.

Kuchepetsa kulondola kwapaketi:WaferWarpage ingayambitse kupotoza kwamalumikizidwe panthawi yolongedza. Pamene chowotcha chimasokonekera panthawi yolongedza, kuyanjanitsa pakati pa chip ndi chipangizo chopangidwa ndi phukusi kungakhudzidwe, zomwe zimapangitsa kuti zisathe kugwirizanitsa bwino zikhomo zolumikizira kapena zolembera za solder. Izi zimachepetsa kulondola kwa phukusi ndipo zingayambitse kusakhazikika kapena kusadalirika kwa chipangizo.

Kuchulukitsa kupsinjika kwamakina:WaferWarpage imabweretsa kupsinjika kowonjezera kwamakina. Chifukwa cha kusinthika kwa chowotcha chokha, kupsinjika kwamakina komwe kumagwiritsidwa ntchito panthawi yolongedza kumatha kuwonjezeka. Izi zitha kuyambitsa kupsinjika mkati mwa chowotcha, kuwononga zinthu ndi kapangidwe kachipangizocho, ngakhalenso kuwononga mkati kapena kuwonongeka kwa chipangizocho. 

Kuwonongeka kwa magwiridwe antchito:Wafer warpage ingayambitse kuwonongeka kwa chipangizo. Zigawo ndi mawonekedwe ozungulira pa chowotcha amapangidwa potengera malo athyathyathya. Ngati chopingasa warps, zingakhudze kugwirizana magetsi, kufala chizindikiro ndi kasamalidwe matenthedwe pakati zipangizo. Izi zitha kuyambitsa zovuta pamachitidwe amagetsi, kuthamanga, kugwiritsa ntchito mphamvu kapena kudalirika kwa chipangizocho.

Mavuto owotcherera:Wafer warpage imatha kuyambitsa zovuta zowotcherera. Pa kuwotcherera ndondomeko, ngati yopyapyala akupindika kapena zopotoka, mphamvu kugawa pa ndondomeko kuwotcherera kungakhale wosagwirizana, chifukwa osauka olowa solder kapena ngakhale solder olowa breakage. Izi zidzakhala ndi zotsatira zoipa pa kudalirika kwa phukusi.

Zifukwa za wafer warpage

Zotsatirazi ndi zina zomwe zingayambitsemtandatsamba la nkhondo:

1.Thermal stress:Pakuyika, chifukwa cha kusintha kwa kutentha, zida zosiyanasiyana pazakudya zimakhala ndi ma coefficients osagwirizana ndi matenthedwe, zomwe zimapangitsa kuti pakhale nkhondo.

2.Inhomogeneity yakuthupi:Panthawi yopangira mkate, kugawa kosagwirizana kwa zinthu kungayambitsenso nkhondo yachitumbuwa. Mwachitsanzo, kachulukidwe ka zinthu kapena makulidwe osiyanasiyana m'malo osiyanasiyana a chophatikiziracho kumapangitsa kuti mkatewo upunduke.

3.Njira zoyendera:Kuwongolera kolakwika kwa magawo ena muzotengera, monga kutentha, chinyezi, kuthamanga kwa mpweya, etc., kungayambitsenso warpage.

Yankho

Njira zina zowongolera tsamba la wafer:

Kusintha njira:Chepetsani chiwopsezo cha tsamba lawafer pokonza magawo a ma CD. Izi zikuphatikizapo kulamulira magawo monga kutentha ndi chinyezi, kutentha ndi kuzizira, komanso kuthamanga kwa mpweya panthawi yolongedza. Kusankha koyenera kwa magawo azinthu kumatha kuchepetsa kupsinjika kwamafuta ndikuchepetsa kuthekera kwa tsamba lawafer.

Kusankha kwazinthu zopakira:Sankhani zipangizo zomangira zoyenera kuti muchepetse chiopsezo cha wafer warpage. Kukula kowonjezera kwamafuta azinthu zoyikapo kuyenera kufanana ndi kuphatikizikako kuti muchepetse kupindika kwawafa chifukwa cha kupsinjika kwamafuta. Panthawi imodzimodziyo, mphamvu zamakina ndi kukhazikika kwa zinthu zonyamula katundu ziyeneranso kuganiziridwa kuti zitsimikizire kuti vuto la wafer warpage likhoza kuchepetsedwa bwino.

Mapangidwe a Wafer ndi kukhathamiritsa kwapangidwe:Panthawi yokonza ndi kupanga chophatikiziracho, njira zina zingatengedwe kuti muchepetse chiopsezo cha wafer warpage. Izi zikuphatikizapo kukhathamiritsa kugawidwa kofanana kwa zinthuzo, kulamulira makulidwe ndi pamwamba pa flatness ya chofufumitsa, ndi zina zotero.

Njira zoyendetsera kutentha:Panthawi yolongedza, njira zoyendetsera kutentha zimatengedwa kuti muchepetse chiopsezo cha wafer warpage. Izi zikuphatikiza kugwiritsa ntchito zida zotenthetsera ndi zoziziritsa zomwe zimafanana kutentha, kuwongolera kutentha ndi kusintha kwa kutentha, ndikutenga njira zoziziritsira zoyenera. Kuwongolera bwino kwamafuta kumatha kuchepetsa kupsinjika kwamafuta pachowotcha ndikuchepetsa kuthekera kwapang'onopang'ono.

Njira zozindikirira ndikusintha:Panthawi yolongedza, ndikofunikira kwambiri kuti muzitha kuzindikira ndikusintha tsamba lawafer. Pogwiritsa ntchito zida zodziwira zolondola kwambiri, monga makina oyezera kapena zida zoyesera zamakina, zovuta zawafer warpage zitha kuzindikirika msanga ndipo njira zofananira zitha kuchitidwa. Izi zitha kuphatikizira kusinthanso magawo olongedza, kusintha zida zopakira, kapena kusintha njira yopangira mawafa.

Tiyenera kuzindikira kuti kuthetsa vuto la wafer warpage ndi ntchito yovuta ndipo ingafunike kuganizira mozama zinthu zambiri komanso kukonzanso mobwerezabwereza ndi kusintha. M'mapulogalamu enieni, mayankho enieni amatha kusiyanasiyana kutengera zinthu monga ma phukusi, zida zophatikizika, ndi zida. Chifukwa chake, kutengera momwe zinthu ziliri, njira zoyenera zitha kusankhidwa ndikutengedwa kuti athetse vuto la wafer warpage.