Journal of the Microelectronics and Packaging Society (마이크로전자및패키징학회지)

The Korean Microelectronics and Packaging Society (한국마이크로전자및패키징학회)
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Insulated, Passivated and Adhesively-Promoted Bonding Wire using Al2O3 Nano Coating

  • Soojae Park (OxWires Co., Ltd.) ;
  • Eunmin Cho (OxWires Co., Ltd.) ;
  • Myoungsik Baek (OxWires Co., Ltd.) ;
  • Eulgi Min (NCD Co., Ltd.) ;
  • Kyujung Choi (NCD Co., Ltd.)
  • Received : 2024.05.09
  • Accepted : 2024.06.10
  • Published : 2024.06.30
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Abstract

Bonding wires are composed of conductive metals of Au, Ag & Cu with excellent electrical conductivities for transmitting power and signals to wafer chips. Wire metals do not provide electrical insulation, adhesion promoter and corrosion passivation. Adhesion between metal wires is extremely weak, which is responsible for wire cut failures during thermal cycling. Organic coating for electrical insulation does not satisfy bondability and manufacturability, and it is complex to apply very thin organic coating on metal wires. Automotive packages require enhanced reliability of packages under harsh conditions. LED and power packages are susceptible to wire cut failures. Contrary to conventional OCB behaviors, forming gas was not required for free air ball formation for both Ag and Pd-coated Cu wires with Al2O3 passivation.

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References

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