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We propose nano-scale Cu direct bonding technology using ultra-high density Cu nano-pillar (CNP) with for high stacking yield exascale 2.5D/3D integration. We clarified the joining mechanism of nano-scale Cu direct bonding using CNP. Nano-scale Cu pillar easily bond with Cu electrode by re-crystallization of CNP due to the solid phase diffusion and by morphology change of CNP to minimize interfacial...
We propose a novel hybrid bonding technology with a high stacking yield using ultra-high density Cu nano-pillar (CNP) for exascale 2.5D/3D integration. To solve the critical issues of a current standard hybrid bonding technology, we developed scaled electrodes with slightly extruded structure and unique adhesive layer of anisotropic conductive film composed of ultra-high density CNP. Test element...
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