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KUGWIRITSA NTCHITO WAWAYA

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Kodi Wire Bonding ndi chiyani?

Waya kugwirizana ndi njira imene kutalika yaing'ono m'mimba mwake zitsulo zofewa waya Ufumuyo n'zogwirizana zitsulo pamwamba popanda ntchito solder, flux, ndi zina ndi ntchito kutentha pamwamba 150 digiri Celsius. Zitsulo zofewa zimaphatikizapo Golide (Au), Copper (Cu), Silver (Ag), Aluminium (Al) ndi ma alloys monga Palladium-Silver (PdAg) ndi ena.

Kumvetsetsa Njira Zopangira Mawaya ndi Njira Zogwiritsira Ntchito Misonkhano Ya Micro Electronics.
Njira / Njira Zopangira Wedge: Riboni, Thermosonic Ball & Ultrasonic Wedge Bond
Kulumikiza waya ndi njira yopangira zolumikizirana pakati pa gawo lophatikizika (IC) kapena chipangizo chofananira cha semiconductor ndi phukusi lake kapena leadframe panthawi yopanga. Amagwiritsidwanso ntchito nthawi zambiri popereka maulumikizidwe amagetsi mumisonkhano yapaketi ya batri ya Lithium-ion. Kumangirira waya nthawi zambiri kumawonedwa ngati kotsika mtengo kwambiri komanso kosinthika paukadaulo wopezeka wa microelectronic interconnect, ndipo amagwiritsidwa ntchito m'maphukusi ambiri a semiconductor opangidwa lero. Pali njira zingapo zomangira mawaya, kuphatikiza: Thermo-Compression Wire Bonding:
Kumangirira waya wa Thermo-compression (kuphatikiza malo omwe nthawi zambiri amakhala (nthawi zambiri Au) pamodzi pansi pa mphamvu yothina yotentha kwambiri, yomwe nthawi zambiri imakhala yopitilira 300 ° C, kuti ipange weld), idapangidwa koyambilira m'ma 1950 kwa ma microelectronic interconnects, komabe izi zinali. m'malo mwake adasinthidwa mwachangu ndi Ultrasonic & Thermosonic bonding mu 60's ngati ukadaulo wolumikizirana kwambiri. Thermo-compression bonding ikugwiritsidwabe ntchito masiku ano, koma nthawi zambiri imapewedwa ndi opanga chifukwa cha kutentha (nthawi zambiri kuwononga) komwe kumafunika kuti apange mgwirizano wopambana.Ultrasonic Wedge Wire Bonding:
M'zaka za m'ma 1960 Ultrasonic wedge wire bonding idakhala njira yayikulu yolumikizirana. Kugwiritsa ntchito kugwedezeka kwafupipafupi (kudzera pa transducer yomveka) ku chida chomangira ndi mphamvu yolumikizira nthawi imodzi, kunalola mawaya a Aluminiyamu ndi Golide kuti aziwotcherera kutentha kwa firiji. Izi akupanga kugwedera kumathandiza pochotsa zodetsa (oxides, zonyansa, etc.) kuchokera kugwirizana pamalo pa chiyambi cha kugwirizana mkombero, ndi kulimbikitsa intermetallic kukula patsogolo kukhala ndi kulimbikitsa chomangira. Mafupipafupi olumikizirana ndi 60 – 120 KHz. Njira yopangira ma wedge ili ndi njira ziwiri zazikuluzikulu zopangira mawaya: Mawaya akulu (olemera) a mawaya a> 100µm m'mimba mwake. kwa waya wabwino komanso kuno kwa waya waukulu.Ultrasonic wedge waya wolumikizana amagwiritsa ntchito chida chomangira kapena "mphero," nthawi zambiri amapangidwa kuchokera ku Tungsten Carbide (kwa waya wa Aluminiyamu) kapena Titanium Carbide (wa waya wa Golide) kutengera zomwe zimafunikira ndi ma diameter a waya; ma wedges a ceramic a ntchito zosiyanasiyana akupezekanso.Thermosonic Wire Bonding:
Kumene kutenthetsa kowonjezera kumafunika (kawirikawiri waya wa Golide, wokhala ndi malo olumikizirana pakati pa 100 - 250 ° C), njirayi imatchedwa Thermosonic wire bonding. Izi zili ndi ubwino waukulu pa chikhalidwe cha thermo-compression system, monga momwe kutentha kwa mawonekedwe ocheperako kumafunikira (Kugwirizanitsa kwa Auu pa kutentha kwatchulidwa koma mchitidwe ndikosadalirika popanda kutentha kowonjezera). Thermosonic Ball Bonding:
Mtundu wina wa waya wa Thermosonic ndi Ball Bonding (onani kuzungulira kwa mpira apa). Njirayi imagwiritsa ntchito chida cha ceramic capillary chomangira pamapangidwe achikhalidwe kuti aphatikize mikhalidwe yabwino mu thermo-compression ndi akupanga kulumikizana popanda zovuta. Kugwedezeka kwa Thermosonic kumatsimikizira kutentha kwa mawonekedwe kumakhalabe kochepa, pamene kugwirizanitsa koyamba, mgwirizano wa mpira woponderezedwa ndi thermally umalola kuti waya ndi mgwirizano wachiwiri uikidwe kumbali iliyonse, osati mu mzere ndi mgwirizano woyamba, womwe ndi wolepheretsa mu Ultrasonic wire bonding. . Popanga zodziwikiratu, zopanga ma voliyumu apamwamba, zomangira mpira zimathamanga kwambiri kuposa zomanga za Ultrasonic / Thermosonic (Wedge), zomwe zimapangitsa mpira wa Thermosonic kumangiriza ukadaulo wolumikizirana kwambiri mu ma microelectronics kwazaka 50+ zapitazi.
Kumangirira riboni, kugwiritsa ntchito matepi achitsulo osalala, kwakhala kofala mu zamagetsi za RF ndi Microwave kwazaka zambiri (riboni ikupereka kusintha kwakukulu pakutayika kwa ma siginecha [khungu] motsutsana ndi waya wozungulira wachikhalidwe). Ma riboni ang'onoang'ono agolide, omwe amafika 75µm m'lifupi ndi 25µm wandiweyani, amamangidwa kudzera mu ndondomeko ya Thermosonic ndi chida chachikulu chomangira mphero. kufunikira kwa loop yotsika, kulumikizana kwakukulu kwawonjezeka.

Kodi waya wagolide ndi chiyani?

Kumangirira waya wa golide ndi njira yomwe waya wagolide amamangidwira ku mfundo ziwiri pagulu kuti apange njira yolumikizirana kapena yolumikizira magetsi. Kutentha, ma ultrasonics, ndi mphamvu zonse zimagwiritsidwa ntchito kupanga mfundo zolumikizira waya wa golide. Njira yopangira malo omangirira imayamba ndi kupanga mpira wa golide kunsonga kwa chida chomangira waya, capillary. Mpira uwu umakanikizidwa pamoto wosonkhana pamwamba pamene mukugwiritsa ntchito mphamvu yeniyeni yeniyeni komanso mafupipafupi a 60kHz - 152kHz akupanga kuyenda ndi chida. njira yopangira mawonekedwe oyenera a geometry a msonkhano. Chomangira chachiwiri, chomwe nthawi zambiri chimatchedwa stitch, chimapangidwa pamtunda wina ndikukanikizira pansi ndi waya ndikugwiritsa ntchito chomangira kuti ching'ambe waya pachomangiracho.

Kumangirira waya wagolide kumapereka njira yolumikizirana mkati mwa mapaketi omwe amakhala ndi magetsi kwambiri, pafupifupi kuchuluka kwake kuposa ma solders ena. Kuonjezera apo, mawaya a golide ali ndi kulekerera kwakukulu kwa okosijeni poyerekeza ndi zipangizo zina zamawaya ndipo ndi zofewa kuposa zambiri, zomwe ndizofunika kwambiri pa malo ovuta.
Njirayi imathanso kusiyanasiyana malinga ndi zosowa za msonkhano. Ndi zipangizo zomveka, mpira wa golidi ukhoza kuikidwa pa malo achiwiri omangirira kuti apange mgwirizano wolimba komanso "wofewa" kuti ateteze kuwonongeka pamwamba pa chigawocho. Pokhala ndi mipata yolimba, mpira umodzi ukhoza kugwiritsidwa ntchito ngati poyambira zomangira ziwiri, kupanga mgwirizano wofanana ndi "V". Pamene chingwe cha waya chiyenera kukhala cholimba kwambiri, mpira ukhoza kuikidwa pamwamba pa nsonga kuti upange mgwirizano wa chitetezo, kuonjezera kukhazikika ndi mphamvu ya waya. Ntchito zambiri zosiyanasiyana zomangira mawaya ndizopanda malire ndipo zitha kupezedwa pogwiritsa ntchito pulogalamu yokhazikika pamakina a waya a Palomar.