Chip-Package Interaction in 3D stacked IC packages using Finite Element Modelling
Analytical modelling, FEM simulations and 4 point bending for BEOL strength analysis. Reduced low-k stiffness results in exponential growth of stress in Cu vias. Keep-out-zones around copper through silicon vias are defined.
3d stacked ic finite element modelling beol chip package interaction thermo-mechanical stress